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Data Access
FTPS from SPDF (not with most browsers)
HTTPS from SPDF
CDAWeb
WebService:
CDAWeb Programmatic Data Access
HAPI: CDAWeb HAPI Server
PSP Solar Wind Electrons Alphas and Protons (SWEAP) SPC Ion Charge Flux Distributions, Electrical Current versus Time and Energy-per-Charge, Level 2 (L2), 0.2185 s Data
var authors='Stevens, Michael L.; Paulson, Kristoff W.; Case, Anthony W.; Kasper, Justin C.; Korreck, Kelly E.';
document.write(authors);
(2020).
PSP Solar Wind Electrons Alphas and Protons (SWEAP) SPC Ion Charge Flux Distributions, Electrical Current versus Time and Energy-per-Charge, Level 2 (L2), 0.2185 s Data.
[Data set].
Space Physics Data Facility.
https://doi.org/10.48322/wpk2-yq48. Accessed on document.write(currentDateStr);.
Note: Proper references, including
Copy BibTeX Citation
or other formats, should include the "Accessed on date" to identify the version of the resource being cited in a given publication.
ResourceID
spase://NASA/NumericalData/ParkerSolarProbe/SWEAP/SPC/Level2/ChargeFluxDistributions/PT0.2185S
Description
SPC Level 2 Ion Data
--------------------
File Naming Format: psp_swp_spc_l2i_yyyymmdd_v01.cdf
Solar Probe Cup, SPC, charge flux distributions comprise electrical current as a function of time and energy-per-charge, with appropriate instrument response elements considered and calibrations applied. This data product contains measurements of ion flux as a function of energy organized into spectra. The SPC instrument measures one-dimensional distributions with a wide field of view. Please refer to the instrument paper for details.
This data set covers all periods for which the instrument was turned on and taking data in the solar wind in ion mode. This includes maneuvers affecting the spacecraft attitude and orientation.
The MODE_FLAG variable contains information about the type of spectrum being measured. "Ion Full Scan" spectra are marked with MODE_FLAG.DAT = 1. These spectra comprise a broad energy range typically with lower signal-to-noise than the more frequent "Ion Peak Tracking" spectra, which are marked with MODE_FLAG.DAT equal to zero. In the most frequent operating mode, ion full scans are executed about once every 30 s or whenever the peak signal from the solar wind is poorly defined.
SPC Encounter 1 Remarks
-----------------------
Data quality is very good for the duration of the encounter. The solar wind flow was within the optimal field of view for the SPC instrument for nearly the entire encounter. See the data flags for specific exceptions. As with all encounters, signal-to-noise is higher during ingress than egress, which is reflected in the typically smaller uncertainties and less frequent "primary peak low signal" flag events.
SPC Cruise Phase Remarks
------------------------
Measurements recorded during cruise phase are not all transmitted to Earth. The typical return is one spectrum out of every 32.
SPC Encounter 2 Remarks
-----------------------
Due to an erroneous setting in the operating mode for this encounter, ion full scan spectra and certain spectra immediately following ion full scans are of reduced quality. In the affected full scan spectra, the energy steps over an initial portion of the measurement spectra have zero width, i.e. the Level 2 ion variables MV_LO.DAT = MV_HI.DAT, and the corresponding measurements are purely noise. In some cases, this results in a poor determination of the proton "primary peak" energy, which renders additional subsequent full scans that follow subject to the same incompleteness. In other cases, the energy range for the subsequent "ion peak tracking mode" scan is not ideal. The affected Level 3 ion measurements have been flagged with DQF.DAT[22]=1, which stands for "energy ranging/peak tracking error" and/or set to fill. The operating mode has been revised such that future encounters will not be so affected.
Parker Solar Probe SWEAP Rules of the Road
------------------------------------------
As part of the development of collaboration with the broader Heliophysics community, the mission has drafted a "Rules of the Road" to govern how PSP instrument data are to be used.
* 1) Users should consult with the PI to discuss the appropriate use of instrument data or model results and to ensure that the users are accessing the most recently available versions of the data and of the analysis routines. Instrument team Science Operations Centers, SOCs, and/or Virtual Observatories, VOs, should facilitate this process serving as the contact point between PI and users in most cases.
* 2) Users should heed the caveats of investigators to the interpretations and limitations of data or model results. Investigators supplying data or models may insist that such caveats be published. Data and model version numbers should also be specified.
* 3) Browse products, Quicklook, and Planning data are not intended for science analysis or publication and should not be used for those purposes without consent of the PI.
* 4) Users should acknowledge the sources of data used in all publications, presentations, and reports: "We acknowledge the NASA Parker Solar Probe Mission and the SWEAP team led by J. Kasper for use of data.".
* 5) Users are encouraged to provide the PI a copy of each manuscript that uses the PI data prior to submission of that manuscript for consideration of publication. On publication, the citation should be transmitted to the PI and any other providers of data.
Metadata Rights
CC0-1.0:
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions. The actual data/software may be subject to a different license.
View XML |
Edit
Details
Version:2.7.1
NumericalData
ResourceID
spase://NASA/NumericalData/ParkerSolarProbe/SWEAP/SPC/Level2/ChargeFluxDistributions/PT0.2185S
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
PSP Solar Wind Electrons Alphas and Protons (SWEAP) SPC Ion Charge Flux Distributions, Electrical Current versus Time and Energy-per-Charge, Level 2 (L2), 0.2185 s Data
DOI
https://doi.org/10.48322/wpk2-yq48
ReleaseDate
2025-12-04 13:30:49Z
RevisionHistory
RevisionEvent
ReleaseDate
2021-04-27 15:38:11Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2025-09-25 16:09:14.598Z
Note
updated Authors, SAB
RevisionEvent
ReleaseDate
2025-10-03 10:48:40Z
Note
Updated PublishedBy name to match ROR Registry. Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB
RevisionEvent
ReleaseDate
2025-12-04 13:30:49Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
Description
SPC Level 2 Ion Data
--------------------
File Naming Format: psp_swp_spc_l2i_yyyymmdd_v01.cdf
Solar Probe Cup, SPC, charge flux distributions comprise electrical current as a function of time and energy-per-charge, with appropriate instrument response elements considered and calibrations applied. This data product contains measurements of ion flux as a function of energy organized into spectra. The SPC instrument measures one-dimensional distributions with a wide field of view. Please refer to the instrument paper for details.
This data set covers all periods for which the instrument was turned on and taking data in the solar wind in ion mode. This includes maneuvers affecting the spacecraft attitude and orientation.
The MODE_FLAG variable contains information about the type of spectrum being measured. "Ion Full Scan" spectra are marked with MODE_FLAG.DAT = 1. These spectra comprise a broad energy range typically with lower signal-to-noise than the more frequent "Ion Peak Tracking" spectra, which are marked with MODE_FLAG.DAT equal to zero. In the most frequent operating mode, ion full scans are executed about once every 30 s or whenever the peak signal from the solar wind is poorly defined.
SPC Encounter 1 Remarks
-----------------------
Data quality is very good for the duration of the encounter. The solar wind flow was within the optimal field of view for the SPC instrument for nearly the entire encounter. See the data flags for specific exceptions. As with all encounters, signal-to-noise is higher during ingress than egress, which is reflected in the typically smaller uncertainties and less frequent "primary peak low signal" flag events.
SPC Cruise Phase Remarks
------------------------
Measurements recorded during cruise phase are not all transmitted to Earth. The typical return is one spectrum out of every 32.
SPC Encounter 2 Remarks
-----------------------
Due to an erroneous setting in the operating mode for this encounter, ion full scan spectra and certain spectra immediately following ion full scans are of reduced quality. In the affected full scan spectra, the energy steps over an initial portion of the measurement spectra have zero width, i.e. the Level 2 ion variables MV_LO.DAT = MV_HI.DAT, and the corresponding measurements are purely noise. In some cases, this results in a poor determination of the proton "primary peak" energy, which renders additional subsequent full scans that follow subject to the same incompleteness. In other cases, the energy range for the subsequent "ion peak tracking mode" scan is not ideal. The affected Level 3 ion measurements have been flagged with DQF.DAT[22]=1, which stands for "energy ranging/peak tracking error" and/or set to fill. The operating mode has been revised such that future encounters will not be so affected.
Parker Solar Probe SWEAP Rules of the Road
------------------------------------------
As part of the development of collaboration with the broader Heliophysics community, the mission has drafted a "Rules of the Road" to govern how PSP instrument data are to be used.
* 1) Users should consult with the PI to discuss the appropriate use of instrument data or model results and to ensure that the users are accessing the most recently available versions of the data and of the analysis routines. Instrument team Science Operations Centers, SOCs, and/or Virtual Observatories, VOs, should facilitate this process serving as the contact point between PI and users in most cases.
* 2) Users should heed the caveats of investigators to the interpretations and limitations of data or model results. Investigators supplying data or models may insist that such caveats be published. Data and model version numbers should also be specified.
* 3) Browse products, Quicklook, and Planning data are not intended for science analysis or publication and should not be used for those purposes without consent of the PI.
* 4) Users should acknowledge the sources of data used in all publications, presentations, and reports: "We acknowledge the NASA Parker Solar Probe Mission and the SWEAP team led by J. Kasper for use of data.".
* 5) Users are encouraged to provide the PI a copy of each manuscript that uses the PI data prior to submission of that manuscript for consideration of publication. On publication, the citation should be transmitted to the PI and any other providers of data.
Acknowledgement
Please acknowledge the Principal Investigator J.C. Kasper for use of the Data.
NASA open data policy applies. Consultation with the instrument team is strongly recommended.
PublicationInfo
Authors
Stevens, Michael L.; Paulson, Kristoff W.; Case, Anthony W.; Kasper, Justin C.; Korreck, Kelly E.
PublicationDate
2020-01-01 00:00:00
PublishedBy
Space Physics Data Facility
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Person
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Note
1.
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spase://SMWG/Person/Justin.C.Kasper
2.
MetadataContact
spase://SMWG/Person/Robert.M.Candey
3.
MetadataContact
spase://SMWG/Person/Lee.Frost.Bargatze
InformationURL
Name
PSP SWEAP Instrument Suite, Space Science Review Publication
URL
https://doi.org/10.1007/s11214-015-0206-3
Description
Parker Solar Probe, PSP, SWEAP Instrument Suite Description: Kasper, J.C., Abiad, R., Austin, G. et al., Solar Wind Electrons Alphas and Protons (SWEAP) Investigation: Design of the Solar Wind and Coronal Plasma Instrument Suite for Solar Probe Plus, Space Scii. Rev., 204, 131–186 (2016)
InformationURL
Name
PSP SWEAP home page, SAO
URL
https://sweap.cfa.harvard.edu
Description
Parker Solar Probe, PSP, SWEAP home page, Smithsonian Astrophysical Observatory
InformationURL
Name
PSP SWEAP Data Access web site, SAO
URL
https://sweap.cfa.harvard.edu/Data.html
Description
Parker Solar Probe, PSP, SWEAP Data Access web site, Smithsonian Astrophysical Observatory
PriorIDs
spase://VSPO/NumericalData/ParkerSolarProbe/SWEAP/SPC/Level2/ChargeFluxDistributions/PT0.2185S
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
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RightsURI
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RightsName
Creative Commons Zero v1.0 Universal
Note
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AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/psp/sweap/spc/l2/l2i/
Description
Access to Data in CDF Format via ftp from SPDF
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/psp/sweap/spc/l2/l2i/
Description
Access to Data in CDF Format via http from SPDF
AccessURL
Name
CDAWeb
URL
https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=PSP_SWP_SPC_L2I&index=sp_phys
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Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb
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Acknowledgement
Please acknowledge the Principal Investigator J.C. Kasper. Please acknowledge the Data Providers and CDAWeb when using these Data.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb Programmatic Data Access
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Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS.
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Acknowledgement
Please acknowledge the Principal Investigator J.C. Kasper. Please acknowledge the Data Providers and CDAWeb when using these Data.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
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Online
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Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products
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Web Service to this product using the HAPI interface.
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Acknowledgement
Please acknowledge the Principal Investigator J.C. Kasper. Please acknowledge the Data Providers and CDAWeb when using these Data.
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spase://SMWG/Instrument/ParkerSolarProbe/SWEAP/SPC
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RelativeStopDate
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Cadence
PT0.2185S
ObservedRegion
Heliosphere
ObservedRegion
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ObservedRegion
Heliosphere.NearEarth
ObservedRegion
Sun.Corona
Parameter #1
Name
Epoch Time, TT2000, Midpoint of Integration
ParameterKey
Epoch
Description
Epoch Time Tags, TT2000, Nanoseconds since J2000 at Midpoint of the Integration
Caveats
Warning: the Epoch time typically has an irregular cadence owing to frequent changes in the operating mode. TT2000 is measured in nanoseconds from J2000 with leap seconds included. Please refer to CDF TT2000 documentation with regards to this convention. This time corresponds to the first measurement of the spectrum. In accordance with SPDF standards, this epoch is interpreted a CDF_TT2000 time. It is acknowledged here that this epoch is not strictly equal to "terrestrial time" as it is defined in the CDF_TT2000 documentation nor is the calendar date interpreted by CDF_T2000 operation performed on this epoch strictly equal to Coordinated Universal Time, UTC This Parameter exhibits an increasing Monotonic Progression.
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PT0.2185S
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Support
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Parameter #2
Name
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Set
Time Series defined by using: EPOCH
ParameterKey
measurement_time
Description
Measurement Time: the time of flux measurement from the Epoch time at the beginning of spectrum
Caveats
This variable gives the time that each specific flux measurement was made within the spectrum, counting up from the time that is specified in the Epoch variable
Cadence
PT0.2185S
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Element 112
Index
112
RenderingHints
AxisLabel
112
Element
Name
Element 113
Index
113
RenderingHints
AxisLabel
113
Element
Name
Element 114
Index
114
RenderingHints
AxisLabel
114
Element
Name
Element 115
Index
115
RenderingHints
AxisLabel
115
Element
Name
Element 116
Index
116
RenderingHints
AxisLabel
116
Element
Name
Element 117
Index
117
RenderingHints
AxisLabel
117
Element
Name
Element 118
Index
118
RenderingHints
AxisLabel
118
Element
Name
Element 119
Index
119
RenderingHints
AxisLabel
119
Element
Name
Element 120
Index
120
RenderingHints
AxisLabel
120
Element
Name
Element 121
Index
121
RenderingHints
AxisLabel
121
Element
Name
Element 122
Index
122
RenderingHints
AxisLabel
122
Element
Name
Element 123
Index
123
RenderingHints
AxisLabel
123
Element
Name
Element 124
Index
124
RenderingHints
AxisLabel
124
Element
Name
Element 125
Index
125
RenderingHints
AxisLabel
125
Element
Name
Element 126
Index
126
RenderingHints
AxisLabel
126
Element
Name
Element 127
Index
127
RenderingHints
AxisLabel
127
Element
Name
Element 128
Index
128
RenderingHints
AxisLabel
128
ValidMin
-1.0e+30
ValidMax
1.0e+30
FillValue
-1.0e+31
Support
Qualifier
Array
SupportQuantity
Temporal
Parameter #3
Name
Solar Probe Cup Modulator Voltage Index
ParameterKey
mv_index
Description
Solar Probe Cup, SPC, Modulator Voltage Index, mv_index
Cadence
PT0.2185S
RenderingHints
AxisLabel
mv_index
ValueFormat
I3
ScaleType
LinearScale
Structure
Size
128
ValidMin
1
ValidMax
128
FillValue
255
Support
Qualifier
Scalar
SupportQuantity
InstrumentMode
Parameter #4
Name
Solar Probe Cup Modulator Voltage, hi
Set
Time Series defined by using: EPOCH
ParameterKey
mv_hi
Description
Solar Probe Cup, SPC, Modulator Voltage, hi, the upper bound of the oscillating potential barrier
Caveats
Measurements of charge flux are made with respect to an AC discriminator voltage that oscillates between two values, which are stored in the variables denoted by using the parameter keys mv_lo and mv_hi.
Cadence
PT0.2185S
Units
V
RenderingHints
AxisLabel
mv_hi
ValueFormat
E8.2
ScaleType
LogScale
Structure
Size
128
Element
Name
Element 1
Index
1
RenderingHints
AxisLabel
1
Element
Name
Element 2
Index
2
RenderingHints
AxisLabel
2
Element
Name
Element 3
Index
3
RenderingHints
AxisLabel
3
Element
Name
Element 4
Index
4
RenderingHints
AxisLabel
4
Element
Name
Element 5
Index
5
RenderingHints
AxisLabel
5
Element
Name
Element 6
Index
6
RenderingHints
AxisLabel
6
Element
Name
Element 7
Index
7
RenderingHints
AxisLabel
7
Element
Name
Element 8
Index
8
RenderingHints
AxisLabel
8
Element
Name
Element 9
Index
9
RenderingHints
AxisLabel
9
Element
Name
Element 10
Index
10
RenderingHints
AxisLabel
10
Element
Name
Element 11
Index
11
RenderingHints
AxisLabel
11
Element
Name
Element 12
Index
12
RenderingHints
AxisLabel
12
Element
Name
Element 13
Index
13
RenderingHints
AxisLabel
13
Element
Name
Element 14
Index
14
RenderingHints
AxisLabel
14
Element
Name
Element 15
Index
15
RenderingHints
AxisLabel
15
Element
Name
Element 16
Index
16
RenderingHints
AxisLabel
16
Element
Name
Element 17
Index
17
RenderingHints
AxisLabel
17
Element
Name
Element 18
Index
18
RenderingHints
AxisLabel
18
Element
Name
Element 19
Index
19
RenderingHints
AxisLabel
19
Element
Name
Element 20
Index
20
RenderingHints
AxisLabel
20
Element
Name
Element 21
Index
21
RenderingHints
AxisLabel
21
Element
Name
Element 22
Index
22
RenderingHints
AxisLabel
22
Element
Name
Element 23
Index
23
RenderingHints
AxisLabel
23
Element
Name
Element 24
Index
24
RenderingHints
AxisLabel
24
Element
Name
Element 25
Index
25
RenderingHints
AxisLabel
25
Element
Name
Element 26
Index
26
RenderingHints
AxisLabel
26
Element
Name
Element 27
Index
27
RenderingHints
AxisLabel
27
Element
Name
Element 28
Index
28
RenderingHints
AxisLabel
28
Element
Name
Element 29
Index
29
RenderingHints
AxisLabel
29
Element
Name
Element 30
Index
30
RenderingHints
AxisLabel
30
Element
Name
Element 31
Index
31
RenderingHints
AxisLabel
31
Element
Name
Element 32
Index
32
RenderingHints
AxisLabel
32
Element
Name
Element 33
Index
33
RenderingHints
AxisLabel
33
Element
Name
Element 34
Index
34
RenderingHints
AxisLabel
34
Element
Name
Element 35
Index
35
RenderingHints
AxisLabel
35
Element
Name
Element 36
Index
36
RenderingHints
AxisLabel
36
Element
Name
Element 37
Index
37
RenderingHints
AxisLabel
37
Element
Name
Element 38
Index
38
RenderingHints
AxisLabel
38
Element
Name
Element 39
Index
39
RenderingHints
AxisLabel
39
Element
Name
Element 40
Index
40
RenderingHints
AxisLabel
40
Element
Name
Element 41
Index
41
RenderingHints
AxisLabel
41
Element
Name
Element 42
Index
42
RenderingHints
AxisLabel
42
Element
Name
Element 43
Index
43
RenderingHints
AxisLabel
43
Element
Name
Element 44
Index
44
RenderingHints
AxisLabel
44
Element
Name
Element 45
Index
45
RenderingHints
AxisLabel
45
Element
Name
Element 46
Index
46
RenderingHints
AxisLabel
46
Element
Name
Element 47
Index
47
RenderingHints
AxisLabel
47
Element
Name
Element 48
Index
48
RenderingHints
AxisLabel
48
Element
Name
Element 49
Index
49
RenderingHints
AxisLabel
49
Element
Name
Element 50
Index
50
RenderingHints
AxisLabel
50
Element
Name
Element 51
Index
51
RenderingHints
AxisLabel
51
Element
Name
Element 52
Index
52
RenderingHints
AxisLabel
52
Element
Name
Element 53
Index
53
RenderingHints
AxisLabel
53
Element
Name
Element 54
Index
54
RenderingHints
AxisLabel
54
Element
Name
Element 55
Index
55
RenderingHints
AxisLabel
55
Element
Name
Element 56
Index
56
RenderingHints
AxisLabel
56
Element
Name
Element 57
Index
57
RenderingHints
AxisLabel
57
Element
Name
Element 58
Index
58
RenderingHints
AxisLabel
58
Element
Name
Element 59
Index
59
RenderingHints
AxisLabel
59
Element
Name
Element 60
Index
60
RenderingHints
AxisLabel
60
Element
Name
Element 61
Index
61
RenderingHints
AxisLabel
61
Element
Name
Element 62
Index
62
RenderingHints
AxisLabel
62
Element
Name
Element 63
Index
63
RenderingHints
AxisLabel
63
Element
Name
Element 64
Index
64
RenderingHints
AxisLabel
64
Element
Name
Element 65
Index
65
RenderingHints
AxisLabel
65
Element
Name
Element 66
Index
66
RenderingHints
AxisLabel
66
Element
Name
Element 67
Index
67
RenderingHints
AxisLabel
67
Element
Name
Element 68
Index
68
RenderingHints
AxisLabel
68
Element
Name
Element 69
Index
69
RenderingHints
AxisLabel
69
Element
Name
Element 70
Index
70
RenderingHints
AxisLabel
70
Element
Name
Element 71
Index
71
RenderingHints
AxisLabel
71
Element
Name
Element 72
Index
72
RenderingHints
AxisLabel
72
Element
Name
Element 73
Index
73
RenderingHints
AxisLabel
73
Element
Name
Element 74
Index
74
RenderingHints
AxisLabel
74
Element
Name
Element 75
Index
75
RenderingHints
AxisLabel
75
Element
Name
Element 76
Index
76
RenderingHints
AxisLabel
76
Element
Name
Element 77
Index
77
RenderingHints
AxisLabel
77
Element
Name
Element 78
Index
78
RenderingHints
AxisLabel
78
Element
Name
Element 79
Index
79
RenderingHints
AxisLabel
79
Element
Name
Element 80
Index
80
RenderingHints
AxisLabel
80
Element
Name
Element 81
Index
81
RenderingHints
AxisLabel
81
Element
Name
Element 82
Index
82
RenderingHints
AxisLabel
82
Element
Name
Element 83
Index
83
RenderingHints
AxisLabel
83
Element
Name
Element 84
Index
84
RenderingHints
AxisLabel
84
Element
Name
Element 85
Index
85
RenderingHints
AxisLabel
85
Element
Name
Element 86
Index
86
RenderingHints
AxisLabel
86
Element
Name
Element 87
Index
87
RenderingHints
AxisLabel
87
Element
Name
Element 88
Index
88
RenderingHints
AxisLabel
88
Element
Name
Element 89
Index
89
RenderingHints
AxisLabel
89
Element
Name
Element 90
Index
90
RenderingHints
AxisLabel
90
Element
Name
Element 91
Index
91
RenderingHints
AxisLabel
91
Element
Name
Element 92
Index
92
RenderingHints
AxisLabel
92
Element
Name
Element 93
Index
93
RenderingHints
AxisLabel
93
Element
Name
Element 94
Index
94
RenderingHints
AxisLabel
94
Element
Name
Element 95
Index
95
RenderingHints
AxisLabel
95
Element
Name
Element 96
Index
96
RenderingHints
AxisLabel
96
Element
Name
Element 97
Index
97
RenderingHints
AxisLabel
97
Element
Name
Element 98
Index
98
RenderingHints
AxisLabel
98
Element
Name
Element 99
Index
99
RenderingHints
AxisLabel
99
Element
Name
Element 100
Index
100
RenderingHints
AxisLabel
100
Element
Name
Element 101
Index
101
RenderingHints
AxisLabel
101
Element
Name
Element 102
Index
102
RenderingHints
AxisLabel
102
Element
Name
Element 103
Index
103
RenderingHints
AxisLabel
103
Element
Name
Element 104
Index
104
RenderingHints
AxisLabel
104
Element
Name
Element 105
Index
105
RenderingHints
AxisLabel
105
Element
Name
Element 106
Index
106
RenderingHints
AxisLabel
106
Element
Name
Element 107
Index
107
RenderingHints
AxisLabel
107
Element
Name
Element 108
Index
108
RenderingHints
AxisLabel
108
Element
Name
Element 109
Index
109
RenderingHints
AxisLabel
109
Element
Name
Element 110
Index
110
RenderingHints
AxisLabel
110
Element
Name
Element 111
Index
111
RenderingHints
AxisLabel
111
Element
Name
Element 112
Index
112
RenderingHints
AxisLabel
112
Element
Name
Element 113
Index
113
RenderingHints
AxisLabel
113
Element
Name
Element 114
Index
114
RenderingHints
AxisLabel
114
Element
Name
Element 115
Index
115
RenderingHints
AxisLabel
115
Element
Name
Element 116
Index
116
RenderingHints
AxisLabel
116
Element
Name
Element 117
Index
117
RenderingHints
AxisLabel
117
Element
Name
Element 118
Index
118
RenderingHints
AxisLabel
118
Element
Name
Element 119
Index
119
RenderingHints
AxisLabel
119
Element
Name
Element 120
Index
120
RenderingHints
AxisLabel
120
Element
Name
Element 121
Index
121
RenderingHints
AxisLabel
121
Element
Name
Element 122
Index
122
RenderingHints
AxisLabel
122
Element
Name
Element 123
Index
123
RenderingHints
AxisLabel
123
Element
Name
Element 124
Index
124
RenderingHints
AxisLabel
124
Element
Name
Element 125
Index
125
RenderingHints
AxisLabel
125
Element
Name
Element 126
Index
126
RenderingHints
AxisLabel
126
Element
Name
Element 127
Index
127
RenderingHints
AxisLabel
127
Element
Name
Element 128
Index
128
RenderingHints
AxisLabel
128
ValidMin
-8000.0
ValidMax
8000.0
FillValue
-1.0e+31
Field
Qualifier
Array
FieldQuantity
Potential
Parameter #5
Name
Solar Probe Cup Modulator Voltage, hi, measurement uncertainty
Set
Time Series defined by using: EPOCH
ParameterKey
mv_hi_DELTA_VAR
Description
Solar Probe Cup, SPC, Modulator Voltage, hi, the upper bound of the oscillating potential barrier, measurement uncertainty
Cadence
PT0.2185S
Units
V
RenderingHints
AxisLabel
mv_hi_DELTA_VAR
ValueFormat
E7.2
ScaleType
LinearScale
Structure
Size
128
Element
Name
Element 1
Index
1
RenderingHints
AxisLabel
1
Element
Name
Element 2
Index
2
RenderingHints
AxisLabel
2
Element
Name
Element 3
Index
3
RenderingHints
AxisLabel
3
Element
Name
Element 4
Index
4
RenderingHints
AxisLabel
4
Element
Name
Element 5
Index
5
RenderingHints
AxisLabel
5
Element
Name
Element 6
Index
6
RenderingHints
AxisLabel
6
Element
Name
Element 7
Index
7
RenderingHints
AxisLabel
7
Element
Name
Element 8
Index
8
RenderingHints
AxisLabel
8
Element
Name
Element 9
Index
9
RenderingHints
AxisLabel
9
Element
Name
Element 10
Index
10
RenderingHints
AxisLabel
10
Element
Name
Element 11
Index
11
RenderingHints
AxisLabel
11
Element
Name
Element 12
Index
12
RenderingHints
AxisLabel
12
Element
Name
Element 13
Index
13
RenderingHints
AxisLabel
13
Element
Name
Element 14
Index
14
RenderingHints
AxisLabel
14
Element
Name
Element 15
Index
15
RenderingHints
AxisLabel
15
Element
Name
Element 16
Index
16
RenderingHints
AxisLabel
16
Element
Name
Element 17
Index
17
RenderingHints
AxisLabel
17
Element
Name
Element 18
Index
18
RenderingHints
AxisLabel
18
Element
Name
Element 19
Index
19
RenderingHints
AxisLabel
19
Element
Name
Element 20
Index
20
RenderingHints
AxisLabel
20
Element
Name
Element 21
Index
21
RenderingHints
AxisLabel
21
Element
Name
Element 22
Index
22
RenderingHints
AxisLabel
22
Element
Name
Element 23
Index
23
RenderingHints
AxisLabel
23
Element
Name
Element 24
Index
24
RenderingHints
AxisLabel
24
Element
Name
Element 25
Index
25
RenderingHints
AxisLabel
25
Element
Name
Element 26
Index
26
RenderingHints
AxisLabel
26
Element
Name
Element 27
Index
27
RenderingHints
AxisLabel
27
Element
Name
Element 28
Index
28
RenderingHints
AxisLabel
28
Element
Name
Element 29
Index
29
RenderingHints
AxisLabel
29
Element
Name
Element 30
Index
30
RenderingHints
AxisLabel
30
Element
Name
Element 31
Index
31
RenderingHints
AxisLabel
31
Element
Name
Element 32
Index
32
RenderingHints
AxisLabel
32
Element
Name
Element 33
Index
33
RenderingHints
AxisLabel
33
Element
Name
Element 34
Index
34
RenderingHints
AxisLabel
34
Element
Name
Element 35
Index
35
RenderingHints
AxisLabel
35
Element
Name
Element 36
Index
36
RenderingHints
AxisLabel
36
Element
Name
Element 37
Index
37
RenderingHints
AxisLabel
37
Element
Name
Element 38
Index
38
RenderingHints
AxisLabel
38
Element
Name
Element 39
Index
39
RenderingHints
AxisLabel
39
Element
Name
Element 40
Index
40
RenderingHints
AxisLabel
40
Element
Name
Element 41
Index
41
RenderingHints
AxisLabel
41
Element
Name
Element 42
Index
42
RenderingHints
AxisLabel
42
Element
Name
Element 43
Index
43
RenderingHints
AxisLabel
43
Element
Name
Element 44
Index
44
RenderingHints
AxisLabel
44
Element
Name
Element 45
Index
45
RenderingHints
AxisLabel
45
Element
Name
Element 46
Index
46
RenderingHints
AxisLabel
46
Element
Name
Element 47
Index
47
RenderingHints
AxisLabel
47
Element
Name
Element 48
Index
48
RenderingHints
AxisLabel
48
Element
Name
Element 49
Index
49
RenderingHints
AxisLabel
49
Element
Name
Element 50
Index
50
RenderingHints
AxisLabel
50
Element
Name
Element 51
Index
51
RenderingHints
AxisLabel
51
Element
Name
Element 52
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52
RenderingHints
AxisLabel
52
Element
Name
Element 53
Index
53
RenderingHints
AxisLabel
53
Element
Name
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Index
54
RenderingHints
AxisLabel
54
Element
Name
Element 55
Index
55
RenderingHints
AxisLabel
55
Element
Name
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Index
56
RenderingHints
AxisLabel
56
Element
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Index
57
RenderingHints
AxisLabel
57
Element
Name
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Index
58
RenderingHints
AxisLabel
58
Element
Name
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Index
59
RenderingHints
AxisLabel
59
Element
Name
Element 60
Index
60
RenderingHints
AxisLabel
60
Element
Name
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Index
61
RenderingHints
AxisLabel
61
Element
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Index
62
RenderingHints
AxisLabel
62
Element
Name
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Index
63
RenderingHints
AxisLabel
63
Element
Name
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Index
64
RenderingHints
AxisLabel
64
Element
Name
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Index
65
RenderingHints
AxisLabel
65
Element
Name
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Index
66
RenderingHints
AxisLabel
66
Element
Name
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Index
67
RenderingHints
AxisLabel
67
Element
Name
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Index
68
RenderingHints
AxisLabel
68
Element
Name
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Index
69
RenderingHints
AxisLabel
69
Element
Name
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Index
70
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AxisLabel
70
Element
Name
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Index
71
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AxisLabel
71
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72
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72
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73
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73
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74
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75
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75
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76
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AxisLabel
76
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77
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AxisLabel
77
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78
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AxisLabel
78
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Index
79
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AxisLabel
79
Element
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Index
80
RenderingHints
AxisLabel
80
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81
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AxisLabel
81
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82
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AxisLabel
82
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83
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AxisLabel
83
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84
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AxisLabel
84
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85
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AxisLabel
85
Element
Name
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Index
86
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AxisLabel
86
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87
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AxisLabel
87
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88
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AxisLabel
88
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89
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89
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90
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90
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91
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91
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93
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AxisLabel
94
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95
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AxisLabel
95
Element
Name
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96
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AxisLabel
96
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97
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AxisLabel
97
Element
Name
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Index
98
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AxisLabel
98
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99
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99
Element
Name
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100
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100
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Name
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Index
101
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101
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Name
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Index
102
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102
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Name
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Index
103
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103
Element
Name
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Index
104
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104
Element
Name
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Index
105
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AxisLabel
105
Element
Name
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Index
106
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AxisLabel
106
Element
Name
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Index
107
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107
Element
Name
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Index
108
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AxisLabel
108
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Name
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109
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AxisLabel
109
Element
Name
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Index
110
RenderingHints
AxisLabel
110
Element
Name
Element 111
Index
111
RenderingHints
AxisLabel
111
Element
Name
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Index
112
RenderingHints
AxisLabel
112
Element
Name
Element 113
Index
113
RenderingHints
AxisLabel
113
Element
Name
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Index
114
RenderingHints
AxisLabel
114
Element
Name
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Index
115
RenderingHints
AxisLabel
115
Element
Name
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Index
116
RenderingHints
AxisLabel
116
Element
Name
Element 117
Index
117
RenderingHints
AxisLabel
117
Element
Name
Element 118
Index
118
RenderingHints
AxisLabel
118
Element
Name
Element 119
Index
119
RenderingHints
AxisLabel
119
Element
Name
Element 120
Index
120
RenderingHints
AxisLabel
120
Element
Name
Element 121
Index
121
RenderingHints
AxisLabel
121
Element
Name
Element 122
Index
122
RenderingHints
AxisLabel
122
Element
Name
Element 123
Index
123
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AxisLabel
123
Element
Name
Element 124
Index
124
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AxisLabel
124
Element
Name
Element 125
Index
125
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AxisLabel
125
Element
Name
Element 126
Index
126
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AxisLabel
126
Element
Name
Element 127
Index
127
RenderingHints
AxisLabel
127
Element
Name
Element 128
Index
128
RenderingHints
AxisLabel
128
ValidMin
0.0
ValidMax
8000.0
FillValue
-1.0e+31
Field
Qualifier
Array
FieldQuantity
Potential
Parameter #6
Name
Solar Probe Cup Modulator Voltage, lo
Set
Time Series defined by using: EPOCH
ParameterKey
mv_lo
Description
Solar Probe Cup, SPC, Modulator Voltage, lo, the lower bound of the oscillating potential barrier
Caveats
Measurements of charge flux are made with respect to an AC discriminator voltage that oscillates between two values, which are stored in the variables denoted by using the parameter keys mv_lo and mv_hi.
Cadence
PT0.2185S
Units
V
RenderingHints
AxisLabel
mv_lo
ValueFormat
E8.2
ScaleType
LogScale
Structure
Size
128
Element
Name
Element 1
Index
1
RenderingHints
AxisLabel
1
Element
Name
Element 2
Index
2
RenderingHints
AxisLabel
2
Element
Name
Element 3
Index
3
RenderingHints
AxisLabel
3
Element
Name
Element 4
Index
4
RenderingHints
AxisLabel
4
Element
Name
Element 5
Index
5
RenderingHints
AxisLabel
5
Element
Name
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Index
6
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6
Element
Name
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Index
7
RenderingHints
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7
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Name
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Index
8
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8
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Name
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Index
9
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9
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Name
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Index
10
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10
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Name
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Index
11
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11
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Name
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Index
12
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12
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Index
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13
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Index
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14
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Index
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15
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Index
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16
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Index
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Index
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18
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20
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Index
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21
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Index
22
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22
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Name
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Index
23
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23
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Name
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Index
24
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24
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Index
25
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25
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Name
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Index
26
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26
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Name
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Index
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27
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Name
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Index
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28
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Index
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29
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30
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34
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Name
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Index
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35
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Name
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Index
36
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36
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Name
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Index
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37
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Name
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Index
38
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38
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Name
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Index
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39
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Name
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Index
40
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40
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Name
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Index
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41
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Name
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Index
42
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42
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Name
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Index
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43
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Name
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Index
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44
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Name
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Name
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Name
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47
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Name
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Name
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51
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Name
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Index
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52
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Name
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Index
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Name
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Index
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Name
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Name
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Name
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59
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Name
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Index
60
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60
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Name
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Index
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61
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Name
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Index
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62
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Name
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Index
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63
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Index
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64
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Name
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Index
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65
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Index
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66
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67
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68
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Index
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79
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Index
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80
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Index
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81
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82
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83
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84
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85
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87
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88
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89
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90
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Name
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Index
91
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91
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Index
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92
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Name
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Name
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Name
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97
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98
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99
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100
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Name
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101
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Name
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102
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Name
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103
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Name
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104
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Name
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Index
105
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105
Element
Name
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Index
106
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106
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Name
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Index
107
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107
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Name
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Index
108
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108
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Name
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Index
109
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109
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Name
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Index
110
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110
Element
Name
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Index
111
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111
Element
Name
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Index
112
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112
Element
Name
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Index
113
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113
Element
Name
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Index
114
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114
Element
Name
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Index
115
RenderingHints
AxisLabel
115
Element
Name
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Index
116
RenderingHints
AxisLabel
116
Element
Name
Element 117
Index
117
RenderingHints
AxisLabel
117
Element
Name
Element 118
Index
118
RenderingHints
AxisLabel
118
Element
Name
Element 119
Index
119
RenderingHints
AxisLabel
119
Element
Name
Element 120
Index
120
RenderingHints
AxisLabel
120
Element
Name
Element 121
Index
121
RenderingHints
AxisLabel
121
Element
Name
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Index
122
RenderingHints
AxisLabel
122
Element
Name
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Index
123
RenderingHints
AxisLabel
123
Element
Name
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Index
124
RenderingHints
AxisLabel
124
Element
Name
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Index
125
RenderingHints
AxisLabel
125
Element
Name
Element 126
Index
126
RenderingHints
AxisLabel
126
Element
Name
Element 127
Index
127
RenderingHints
AxisLabel
127
Element
Name
Element 128
Index
128
RenderingHints
AxisLabel
128
ValidMin
-8000.0
ValidMax
8000.0
FillValue
-1.0e+31
Field
Qualifier
Array
FieldQuantity
Potential
Parameter #7
Name
Solar Probe Cup Modulator Voltage, lo, measurement uncertainty
Set
Time Series defined by using: EPOCH
ParameterKey
mv_lo_DELTA_VAR
Description
Solar Probe Cup, SPC, Modulator Voltage, lo, the lower bound of the oscillating potential barrier, measurement uncertainty
Cadence
PT0.2185S
Units
V
RenderingHints
AxisLabel
mv_lo_DELTA_VAR
ValueFormat
E7.2
ScaleType
LinearScale
Structure
Size
128
Element
Name
Element 1
Index
1
RenderingHints
AxisLabel
1
Element
Name
Element 2
Index
2
RenderingHints
AxisLabel
2
Element
Name
Element 3
Index
3
RenderingHints
AxisLabel
3
Element
Name
Element 4
Index
4
RenderingHints
AxisLabel
4
Element
Name
Element 5
Index
5
RenderingHints
AxisLabel
5
Element
Name
Element 6
Index
6
RenderingHints
AxisLabel
6
Element
Name
Element 7
Index
7
RenderingHints
AxisLabel
7
Element
Name
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Index
8
RenderingHints
AxisLabel
8
Element
Name
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Index
9
RenderingHints
AxisLabel
9
Element
Name
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Index
10
RenderingHints
AxisLabel
10
Element
Name
Element 11
Index
11
RenderingHints
AxisLabel
11
Element
Name
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Index
12
RenderingHints
AxisLabel
12
Element
Name
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Index
13
RenderingHints
AxisLabel
13
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Name
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Index
14
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14
Element
Name
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Index
15
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15
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Name
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Index
16
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16
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Name
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Index
17
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17
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18
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18
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19
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20
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20
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Name
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21
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22
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23
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24
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24
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25
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26
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27
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40
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128
RenderingHints
AxisLabel
128
ValidMin
0.0
ValidMax
8000.0
FillValue
-1.0e+31
Field
Qualifier
Array
FieldQuantity
Potential
Parameter #8
Name
Solar Probe Cup Sensor Plate A Current
Set
Time Series defined by using: EPOCH
ParameterKey
a_current
Description
Solar Probe Cup, SPC, Sensor Plate A Current
Cadence
PT0.2185S
Units
pA
UnitsConversion
1.0e-12>A
RenderingHints
DisplayType
Spectrogram
AxisLabel
A_CURRENT
ValueFormat
E9.1
ScaleType
LogScale
Structure
Size
128
ValidMin
-1.0e+06
ValidMax
1.0e+06
FillValue
-1.0e+31
Field
Qualifier
Array
FieldQuantity
Current
Parameter #9
Name
Solar Probe Cup Sensor Plate B Current
Set
Time Series defined by using: EPOCH
ParameterKey
b_current
Description
Solar Probe Cup, SPC, Sensor Plate B Current
Cadence
PT0.2185S
Units
pA
UnitsConversion
1.0e-12>A
RenderingHints
DisplayType
Spectrogram
AxisLabel
B_CURRENT
ValueFormat
E9.1
ScaleType
LogScale
Structure
Size
128
ValidMin
-1.0e+06
ValidMax
1.0e+06
FillValue
-1.0e+31
Field
Qualifier
Array
FieldQuantity
Current
Parameter #10
Name
Solar Probe Cup Sensor Plate C Current
Set
Time Series defined by using: EPOCH
ParameterKey
c_current
Description
Solar Probe Cup, SPC, Sensor Plate C Current
Cadence
PT0.2185S
Units
pA
UnitsConversion
1.0e-12>A
RenderingHints
DisplayType
Spectrogram
AxisLabel
C_CURRENT
ValueFormat
E9.1
ScaleType
LogScale
Structure
Size
128
ValidMin
-1.0e+06
ValidMax
1.0e+06
FillValue
-1.0e+31
Field
Qualifier
Array
FieldQuantity
Current
Parameter #11
Name
Solar Probe Cup Sensor Plate D Current
Set
Time Series defined by using: EPOCH
ParameterKey
d_current
Description
Solar Probe Cup, SPC, Sensor Plate D Current
Cadence
PT0.2185S
Units
pA
UnitsConversion
1.0e-12>A
RenderingHints
DisplayType
Spectrogram
AxisLabel
D_CURRENT
ValueFormat
E9.1
ScaleType
LogScale
Structure
Size
128
ValidMin
-1.0e+06
ValidMax
1.0e+06
FillValue
-1.0e+31
Field
Qualifier
Array
FieldQuantity
Current
Parameter #12
Name
Solar Probe Cup Sensor Plate A Current, measurement uncertainty
Set
Time Series defined by using: EPOCH
ParameterKey
a_current_DELTA_VAR
Description
Solar Probe Cup, SPC, Sensor Plate A Current, measurement uncertainty
Caveats
Sources of uncertainty include the measurement digitization error, the voltage pair and waveform error, non-stationarity of conditions during the measurement period, and the propagated uncertainty in absolute calibration.
Cadence
PT0.2185S
Units
pA
UnitsConversion
1.0e-12>A
RenderingHints
AxisLabel
A_CURRENT_DELTA_VAR
ValueFormat
E8.1
ScaleType
LinearScale
Structure
Size
128
ValidMin
0.0
ValidMax
1.0e+06
FillValue
-1.0e+31
Field
Qualifier
Array
FieldQuantity
Current
Parameter #13
Name
Solar Probe Cup Sensor Plate B Current, measurement uncertainty
Set
Time Series defined by using: EPOCH
ParameterKey
b_current_DELTA_VAR
Description
Solar Probe Cup, SPC, Sensor Plate B Current, measurement uncertainty
Caveats
Sources of uncertainty include the measurement digitization error, the voltage pair and waveform error, non-stationarity of conditions during the measurement period, and the propagated uncertainty in absolute calibration.
Cadence
PT0.2185S
Units
pA
UnitsConversion
1.0e-12>A
RenderingHints
AxisLabel
B_CURRENT_DELTA_VAR
ValueFormat
E8.1
ScaleType
LinearScale
Structure
Size
128
ValidMin
0.0
ValidMax
1.0e+06
FillValue
-1.0e+31
Field
Qualifier
Array
FieldQuantity
Current
Parameter #14
Name
Solar Probe Cup Sensor Plate C Current, measurement uncertainty
Set
Time Series defined by using: EPOCH
ParameterKey
c_current_DELTA_VAR
Description
Solar Probe Cup, SPC, Sensor Plate C Current, measurement uncertainty
Caveats
Sources of uncertainty include the measurement digitization error, the voltage pair and waveform error, non-stationarity of conditions during the measurement period, and the propagated uncertainty in absolute calibration.
Cadence
PT0.2185S
Units
pA
UnitsConversion
1.0e-12>A
RenderingHints
AxisLabel
C_CURRENT_DELTA_VAR
ValueFormat
E8.1
ScaleType
LinearScale
Structure
Size
128
ValidMin
0.0
ValidMax
1.0e+06
FillValue
-1.0e+31
Field
Qualifier
Array
FieldQuantity
Current
Parameter #15
Name
Solar Probe Cup Sensor Plate D Current, measurement uncertainty
Set
Time Series defined by using: EPOCH
ParameterKey
d_current_DELTA_VAR
Description
Solar Probe Cup, SPC, Sensor Plate D Current, measurement uncertainty
Caveats
Sources of uncertainty include the measurement digitization error, the voltage pair and waveform error, non-stationarity of conditions during the measurement period, and the propagated uncertainty in absolute calibration.
Cadence
PT0.2185S
Units
pA
UnitsConversion
1.0e-12>A
RenderingHints
AxisLabel
D_CURRENT_DELTA_VAR
ValueFormat
E8.1
ScaleType
LinearScale
Structure
Size
128
ValidMin
0.0
ValidMax
1.0e+06
FillValue
-1.0e+31
Field
Qualifier
Array
FieldQuantity
Current
Parameter #16
Name
Solar Probe Cup Bulk Flow Angles: Azimuth and Elevation
Set
Time Series defined by using: EPOCH
ParameterKey
flow_angle
Description
Solar Probe Cup, SCP, Bulk Flow Angles: Azimuth and Elevation: the angles associated with the mean flow into the cup, SPC coordinates
Caveats
This flow component is across the sensor with respect to the SPC sensor coordinate system rudimentary estimate of the bulk flow angle into the sensor. This variable has dimension ⨯ N_t, where the first element is the azimuthal angle and the second element is the elevation angle. This flow angle is estimated by using the linear cold-plasma approximation and considerin three-point neighborhood in time at the peak flux measurement. It does not account for spreading of the beam in the instrument, which may be significant. Please refer to Case et al. 2019 and/or consult the instrument team regarding systematics in accuracy and precision for this quantity. Positive azimuthal angles correspond to deflections towards sensor plate and C. Negative azimuthal angles correspond to deflections towards sensor plate and D. In encounter configuration, positive azimuth angles correspond to -T flow directions in the RTN reference frame. Positive elevation angles correspond to deflections towards sensor plate and B. Negative elevation angles correspond to deflections towards sensor plate and D. In encounter configuration, positive elevation angles correspond to -N flow directions in the RTN reference frame.
Cadence
PT0.2185S
Units
rad
RenderingHints
DisplayType
TimeSeries
AxisLabel
flow_angle
ValueFormat
E7.2
ScaleType
LinearScale
Structure
Size
2
Element
Name
azimuth flow angle
Index
1
RenderingHints
AxisLabel
azimuth flow angle
Element
Name
elevation flow angle
Index
2
RenderingHints
AxisLabel
elevation flow angle
ValidMin
-1.5708
ValidMax
1.5708
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Array
Qualifier
DirectionAngle.AzimuthAngle
Qualifier
DirectionAngle.ElevationAngle
ParticleQuantity
ArrivalDirection
Parameter #17
Name
Solar Probe Cup Bulk Flow Azimuth and Elevation Angles, uncertainties
Set
Time Series defined by using: EPOCH
ParameterKey
flow_angle_DELTA_VAR
Description
Solar Probe Cup, SPC, Bulk Flow Azimuth and Elevation Angles, uncertainties in the angle of flow into the cup in SPC coordinates
Caveats
Sources of uncertainty can include propagated calibration uncertainty, propagated current measurement uncertainty, non-stationarity of the flow angle over the period of measurement, and confusion between multiple ion species
Cadence
PT0.2185S
Units
rad
RenderingHints
AxisLabel
flow_angle_DELTA_VAR
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
2
Element
Name
Element 1
Index
1
RenderingHints
AxisLabel
azimuth flow angle
Element
Name
Element 2
Index
2
RenderingHints
AxisLabel
elevation flow angle
ValidMin
0.0
ValidMax
1.5708
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Array
Qualifier
DirectionAngle.AzimuthAngle
Qualifier
DirectionAngle.ElevationAngle
ParticleQuantity
ArrivalDirection
Parameter #18
Name
Solar Probe Cup Charged Flux Density
Set
Time Series defined by using: EPOCH
ParameterKey
diff_charge_flux_density
Description
Solar Probe Cup, SPC, Charged Flux Density: This variable is a measure of the charge flux density of the solar wind measured over the energy range defined by the modulator voltage pair. The calibrated effective area of the SPC instrument has been taken into account. This measured charge flux density is equivalent to the total charge crossing a surface oriented perpendular to Z-axis in the Spacecraft, SC, reference frame per unit area per unit time due to charge carriers having energy-per-charge in the range between the modulator voltage low and high, MV_LO and MV_HI, settings. This quantity is estimated by using the linear, cold plasma approximation for the mean flow angle of the solar wind into the sensor. It does not account for spreading of the beam in the instrument, which may be significant. Please refer to Case et al. 2019 and/or consult the instrument team regarding systematics in accuracy and precision for this quantity. Appendix 3.1 provides a walk through for estimating the reduced distribution function from this variable.
Caveats
This is the differential charge flux density of the solar wind measured over the energy range defined by the modulator voltage pair. The calibrated effective area of the cup has been taken into account.
Cadence
PT0.2185S
Units
pA/cm^-2
UnitsConversion
1.0e-8>A/m^2
RenderingHints
DisplayType
Spectrogram
AxisLabel
DIFF_CHARGE_FLUX_DENSITY
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
128
ValidMin
-1.0e+30
ValidMax
1.0e+30
FillValue
-1.0e+31
Field
Qualifier
Array
FieldQuantity
Current
Parameter #19
Name
Solar Probe Cup Differential Charged Flux Density, uncertainty
Set
Time Series defined by using: EPOCH
ParameterKey
diff_charge_flux_density_DELTA_VAR
Description
Solar Probe Cup, SPC, Differential Charged Flux Density, uncertainty
Caveats
Sources of uncertainty include all propagated uncertainties plus the uncertainty associated with the effective area of the sensor at the estimated flow angle.
Cadence
PT0.2185S
Units
pA/cm^-2
UnitsConversion
1.0e-8>A/m^2
RenderingHints
AxisLabel
DIFF_CHARGE_FLUX_DENSITY_DELTA_VAR
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
128
ValidMin
0.0
ValidMax
1.0e+06
FillValue
-1.0e+31
Field
Qualifier
Array
FieldQuantity
Current
Parameter #20
Name
Solar Probe Cup Operating Mode Flag
Set
Time Series defined by using: EPOCH
ParameterKey
MODE_FLAG
Description
Solar Probe Cup, SPC, Operating Mode Flag: signifies the SPC operating mode at the time of measurement.
Caveats
The Mode Flag contains information about the type of spectrum being measured. "Ion full scan" spectra are marked with MODE_FLAG.DAT equal to 1. The Ion full scan spectra compris broad energy range, typically with lower signal-to-noise than the more frequent "Ion peak tracking" spectra, which are marked with MODE_FLAG.DAT equal to 0. In the most frequent operating mode, Ion full scans are executed about once every 3 or whenever the peak signal from the solar wind is poorly defined. Mode Flag Values: 0=Ion Peak Tracking Mode, 1=Ion Full Scan Mode, 2=Ion Flux-Angle Mode, 3=Ion Calibration Mode, 4=Electron Peak Tracking Mode, 5=Electron Full Scan Mode, 6=Electron Flux-Angle Mode, 7=Electron Calibration Mode.
Cadence
PT0.2185S
RenderingHints
AxisLabel
MODE_FLAG
ValueFormat
I3
ScaleType
LinearScale
ValidMin
0
ValidMax
254
FillValue
255
Support
Qualifier
Scalar
SupportQuantity
InstrumentMode