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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
Download of STEREO-B IMPACT/SWEA Level 1 data
STEREO-B In-Situ Measurements of Particles and CME Transients (IMPACT) Solar Wind Electron Analyzer (SWEA) 3-Dimensional Electron Distributions, Burst Mode, Level 1 (L1), 2 s Data
var authors='Luhmann, Janet, G.; Schroeder, Peter';
document.write(authors);
(2023).
STEREO-B In-Situ Measurements of Particles and CME Transients (IMPACT) Solar Wind Electron Analyzer (SWEA) 3-Dimensional Electron Distributions, Burst Mode, Level 1 (L1), 2 s Data.
[Data set].
Space Physics Data Facility.
https://doi.org/10.48322/9n2r-ch29. Accessed on document.write(currentDateStr);.
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ResourceID
spase://NASA/NumericalData/STEREO-B/IMPACT/SWEA/L1/PT2S
Description
The file contains Level 1 3D electron distributions in burst mode from the In-situ Measurements of Particles and CME Transients, IMPACT, SWEA instrument on the STEREO Behind spacecraft. For important usage caveats see https://cdaweb.gsfc.nasa.gov/stereo_swea_caveats.html.
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.
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Details
Version:2.7.1
NumericalData
ResourceID
spase://NASA/NumericalData/STEREO-B/IMPACT/SWEA/L1/PT2S
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
STEREO-B In-Situ Measurements of Particles and CME Transients (IMPACT) Solar Wind Electron Analyzer (SWEA) 3-Dimensional Electron Distributions, Burst Mode, Level 1 (L1), 2 s Data
DOI
https://doi.org/10.48322/9n2r-ch29
ReleaseDate
2026-06-26 13:28:30Z
RevisionHistory
RevisionEvent
ReleaseDate
2021-04-27 15:38:11Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2023-07-31 12:34:56.789Z
Note
Added DOI and PublicationInfo minted by LFB, metadata versioned up to SPASE 2.6.0, reviewed by LFB 20230727
RevisionEvent
ReleaseDate
2025-10-03 10:49:14Z
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 13:31:38Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
RevisionEvent
ReleaseDate
2026-06-26 13:28:30Z
Note
Add 'Z' to RevisionEvent:ReleaseDate(s), PublicationDate, TemporalDescription:TimeSpan:StartDate, TemporalDescription:TimeSpan:StopDate. ZCB
Description
The file contains Level 1 3D electron distributions in burst mode from the In-situ Measurements of Particles and CME Transients, IMPACT, SWEA instrument on the STEREO Behind spacecraft. For important usage caveats see https://cdaweb.gsfc.nasa.gov/stereo_swea_caveats.html.
Acknowledgement
Please acknowledge the Principal Investigator J.G. Luhmann for use of the Data
PublicationInfo
Authors
Luhmann, Janet, G.; Schroeder, Peter
PublicationDate
2023-01-01 00:00:00Z
PublishedBy
Space Physics Data Facility
Contacts
Role
Person
StartDate
StopDate
Note
1.
PrincipalInvestigator
spase://SMWG/Person/Janet.G.Luhmann
2.
DataProducer
spase://SMWG/Person/Peter.Schroeder
3.
MetadataContact
spase://SMWG/Person/Robert.M.Candey
4.
MetadataContact
spase://SMWG/Person/Lee.Frost.Bargatze
InformationURL
Name
STEREO IMPACT Instrument web site, UCB
URL
http://sprg.ssl.berkeley.edu/impact/
Description
STEREO In-Situ Measurements of Particles and CME Transients, IMPACT, instrument experiment and data description web site, hosted by University of California, Berkeley
Language
en
InformationURL
Name
STEREO IMPACT SWEA Data Caveats web page, GSFC
URL
https://cdaweb.gsfc.nasa.gov/stereo_swea_caveats.html
Description
STEREO In-Situ Measurements of Particles and CME Transients, IMPACT, Solar Wind Electron Analyzer, SWEA, Data Caveats web page, hosted by NASA GSFC
Language
en
InformationURL
Name
NSSDC Master Catalog, STEREO B, IMPACT instrument
URL
https://nssdc.gsfc.nasa.gov/nmc/experiment/display.action?id=2006-047B-03
Description
General information concerning the STEREO B, In-Situ Measurements of Particles and CME Transients, IMPACT, instrument
Language
en
PriorIDs
spase://VSPO/NumericalData/P_STEREO-B_HDR_IMPACT_SWEA_2sec_3DBurstMode_Distributions
spase://VSPO/NumericalData/STEREO-B/IMPACT/SWEA/PT2S
spase://VSPO/NumericalData/STEREO-B/IMPACT/SWEA/L1/PT2S
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb
Availability
Online
AccessRights
Open
RightsList
Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/stereo/behind/l1/impact/swea_disb/
Description
Access to Data in CDF Format via ftp from SPDF
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/stereo/behind/l1/impact/swea_disb/
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=STB_L1_SWEA_DISB&index=sp_phys
ProductKey
STB_L1_SWEA_DISB
Description
Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb
Format
CDF
Encoding
None
AccessDirectoryTemplate
https://cdaweb.gsfc.nasa.gov/pub/data/stereo/behind/l1/impact/swea_disb/$Y
AccessFilenameTemplate
stb_l1_swea_disb_$Y$m$d_$v.cdf
Acknowledgement
Please acknowledge the Principal Investigator J.G. Luhmann. 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
URL
https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/STB_L1_SWEA_DISB/clientLibraryExample/
Style
WebService
ProductKey
STB_L1_SWEA_DISB
Description
Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS.
Format
Binary
Acknowledgement
Please acknowledge the Principal Investigator J.G. Luhmann. Please acknowledge the Data Providers and CDAWeb when using these Data.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb
Availability
Online
AccessRights
Open
RightsList
Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products
AccessURL
Name
CDAWeb HAPI Server
URL
https://cdaweb.gsfc.nasa.gov/hapi
Style
HAPI
ProductKey
STB_L1_SWEA_DISB
Description
Web Service to this product using the HAPI interface.
Format
CSV
Acknowledgement
Please acknowledge the Principal Investigator J.G. Luhmann. Please acknowledge the Data Providers and CDAWeb when using these Data.
AccessInformation
RepositoryID
spase://SMWG/Repository/STEREO/IMPACT
Availability
Online
AccessRights
Open
AccessURL
Name
Download of STEREO-B IMPACT/SWEA Level 1 data
URL
http://stereo.ssl.berkeley.edu/L1_data.php
Description
A web site hosting the STEREO IMPACT Level 1 data
Format
CDF
ProcessingLevel
Calibrated
InstrumentIDs
spase://SMWG/Instrument/STEREO-B/IMPACT/SWEA
MeasurementType
ElectricField
MeasurementType
EnergeticParticles
MeasurementType
InstrumentStatus
TemporalDescription
TimeSpan
StartDate
2006-10-28 20:05:11.000Z
StopDate
2014-02-26 22:51:47.000Z
Cadence
PT2S
ObservedRegion
Heliosphere.Remote1AU
Caveats
Since commissioning, the SWEA instruments on both STEREO spacecraft have registered difficult to characterize degradations in the solar wind core electron energies, probably due to charging effects. The nature of the degradations are such that the data are not reliable for electron measurements below 45 eV. However, halo and higher energy electrons are unaffected. Versions 4 and higher of the SWEA 3D distribution data products have these lower energies removed. Similarly, Versions 4 and higher of the SWEA pitch angle distribution products also remove these energies. Use of the SWEA pitch angle distributions for most purposes, for example, higher energy heat flux pitch angle distribbutions, PADs, should be largely unaffected. For more information regarding these issues, please contact Peter Schroeder, peters@ssl.berkeley.edu. If you have downloaded Version 3 or earlier Files, those files contain unreliable data below 45 eV and should be replaced with Version 4 files. Note that if the interpretation of these data become a significant focus in your work, you should obtain explicit prior permission from the PI of the experiment before publication.
Parameter #1
Name
Epoch Time
ParameterKey
Epoch
Description
Epoch Time Tag, time since 0 AD, interval centered
Cadence
PT2S
Units
ms
UnitsConversion
1.0e-3>s
RenderingHints
AxisLabel
Epoch
ValidMin
01-Jan-1990 00:00:00.000
ValidMax
31-Dec-2020 00:00:00.000
FillValue
31-Dec-9999 23:59:59.999
Support
SupportQuantity
Temporal
Parameter #2
Name
Electron Count Distribution, Time Interval
Set
Time series defined by using: EPOCH
ParameterKey
SWEADistInterval
Description
Electron Three-Dimensional Count Distribution, data collection time Interval
Cadence
PT2S
Units
s
RenderingHints
AxisLabel
Dist Time Interval
ValueFormat
E13.6
ValidMin
0.0
ValidMax
100000.0
FillValue
-1.0e+31
Support
SupportQuantity
Temporal
Parameter #3
Name
SWEA Instrument Mode ID
Set
Time series defined by using: EPOCH
ParameterKey
SWEAModeID
Description
Solar Wind Electron Analyzer, SWEA, Instrument Mode ID
Cadence
PT2S
RenderingHints
AxisLabel
SWEA Mode
ValueFormat
I2
ValidMin
-127
ValidMax
127
FillValue
-128
Support
Qualifier
Scalar
SupportQuantity
InstrumentMode
Parameter #4
Name
Electron Count Distribution, Angle Bins
ParameterKey
Angle_Bins
Description
Electron Count Distribution, 80 Angle Bins
Cadence
PT2S
RenderingHints
AxisLabel
Angle Bin
ValueFormat
I3
Structure
Size
80
ValidMin
0
ValidMax
80
FillValue
4294967295
Support
Qualifier
Array
SupportQuantity
Other
Parameter #5
Name
Electron 3D Energy-Angle Count Distribution
Set
Time series defined by using: EPOCH
ParameterKey
Distribution
Description
Electron Three-Dimensional Count Distribution, Energy versus Angle display, do not use energies below 45 eV. * Column 1 Labels from ENERGY: ["Dist @ 1790 eV","Dist @ 1260 eV","Dist @ 883 eV","Dist @ 621 eV","Dist @ 437 eV","Dist @ 307 eV","Dist @ 216 eV","Dist @ 152 eV","Dist @ 107 eV","Dist @ 75.0 eV","Dist @ 52.7 eV","Dist @ 37.1 eV","Dist @ 26.0 eV","Dist @ 18.3 eV","Dist @ 12.9 eV","Dist @ 9.05 eV"]. * Column 2 Labels from ANGLE_BINS: ["Dist @ Angle 1","Dist @ Angle 2","Dist @ Angle 3","Dist @ Angle 4","Dist @ Angle 5","Dist @ Angle 6","Dist @ Angle 7","Dist @ Angle 8","Dist @ Angle 9","Dist @ Angle 10","Dist @ Angle 11","Dist @ Angle 12","Dist @ Angle 13","Dist @ Angle 14","Dist @ Angle 15","Dist @ Angle 16","Dist @ Angle 17","Dist @ Angle 18","Dist @ Angle 19","Dist @ Angle 20","Dist @ Angle 21","Dist @ Angle 22","Dist @ Angle 23","Dist @ Angle 24","Dist @ Angle 25","Dist @ Angle 26","Dist @ Angle 27","Dist @ Angle 28","Dist @ Angle 29","Dist @ Angle 30","Dist @ Angle 31","Dist @ Angle 32","Dist @ Angle 33","Dist @ Angle 34","Dist @ Angle 35","Dist @ Angle 36","Dist @ Angle 37","Dist @ Angle 38","Dist @ Angle 39","Dist @ Angle 40","Dist @ Angle 41","Dist @ Angle 42","Dist @ Angle 43","Dist @ Angle 44","Dist @ Angle 45","Dist @ Angle 46","Dist @ Angle 47","Dist @ Angle 48","Dist @ Angle 49","Dist @ Angle 50","Dist @ Angle 51","Dist @ Angle 52","Dist @ Angle 53","Dist @ Angle 54","Dist @ Angle 55","Dist @ Angle 56","Dist @ Angle 57","Dist @ Angle 58","Dist @ Angle 59","Dist @ Angle 60","Dist @ Angle 61","Dist @ Angle 62","Dist @ Angle 63","Dist @ Angle 64","Dist @ Angle 65","Dist @ Angle 66","Dist @ Angle 67","Dist @ Angle 68","Dist @ Angle 69","Dist @ Angle 70","Dist @ Angle 71","Dist @ Angle 72","Dist @ Angle 73","Dist @ Angle 74","Dist @ Angle 75","Dist @ Angle 76","Dist @ Angle 77","Dist @ Angle 78","Dist @ Angle 79","Dist @ Angle 80"].
Cadence
PT2S
RenderingHints
DisplayType
Spectrogram
ValueFormat
E13.6
Structure
Size
16 80
FillValue
-1.0e+31
Particle
ParticleType
Electron
Qualifier
Differential
Qualifier
Array
ParticleQuantity
NumberFlux
Parameter #6
Name
SWEA Bias Voltage
Set
Time series defined by using: EPOCH
ParameterKey
V0
Description
Solar Wind Electron Analyzer, SWEA, Instrument Bias Voltage, V₀. The bias voltage sweep pattern was altered to reduce low energy electron contributions from unanticipated spacecraft-related secondaries. The voltage bias were originally swept from 1 eV to 2000 eV but the lower limit sweep voltage was later updated to 8 eV.
Cadence
PT2S
RenderingHints
AxisLabel
V0
ValueFormat
I3
ScaleType
LinearScale
ValidMin
-127
ValidMax
127
FillValue
-128
Field
Qualifier
Magnitude
Qualifier
Scalar
FieldQuantity
Potential
Parameter #7
Name
Electron Count Distribution, Energy Bins
ParameterKey
Energy
Description
Electron Count Distribution, 16 Energy Bins
Cadence
PT2S
Units
eV
UnitsConversion
1.602176565e-19>J
RenderingHints
AxisLabel
Energy
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
16
ValidMin
1.0
ValidMax
2000.0
FillValue
-1.0e+31
Particle
ParticleType
Electron
Qualifier
Differential
Qualifier
Array
ParticleQuantity
Energy