HDPWS

Swarm-A - EFI / TII - cross-track

ResourceID
spase://CNES/NumericalData/CDPP-AMDA/SWARM-A/TII/swarma-tii-all

Description
2Hz TII Cross-track Ion Flow Dataset

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Details

Version:2.4.1

NumericalData

ResourceID
spase://CNES/NumericalData/CDPP-AMDA/SWARM-A/TII/swarma-tii-all
ResourceHeader
ResourceName
Swarm-A - EFI / TII - cross-track
AlternateName
2Hz TII Cross-track Ion Flow Dataset
ReleaseDate
2019-05-06 16:52:01Z
Description
2Hz TII Cross-track Ion Flow Dataset
Contacts
Role Person StartDate StopDate Note
1. Scientist spase://CNES/Person/CDPP-AMDA/Johnathan.Burchill
InformationURL
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDPP/AMDA HAPI Server
URL
Style
HAPI
ProductKey
swarma-tii-all
Description
Web Service to this product using the HAPI interface.
Format
CSV
Acknowledgement
Thank you for acknowledging the use of AMDA in publications with wording like "Data analysis was performed with the AMDA science analysis system provided by the Centre de Données de la Physique des Plasmas (CDPP) supported by CNRS, CNES, Observatoire de Paris and Université Paul Sabatier, Toulouse". See the Rules of the road at https://amda.cdpp.eu/help/policy.html . Please acknowledge the Data Providers.
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDPP/AMDA Web application
URL
Description
Access to Data via CDPP/AMDA Web application.
Format
CSV
Format
VOTable
Format
CDF
Format
PNG
Acknowledgement
Thank you for acknowledging the use of AMDA in publications with wording like "Data analysis was performed with the AMDA science analysis system provided by the Centre de Données de la Physique des Plasmas (CDPP) supported by CNRS, CNES, Observatoire de Paris and Université Paul Sabatier, Toulouse". See the Rules of the road at https://amda.cdpp.eu/help/policy.html . Please acknowledge the Data Providers.
ProcessingLevel
Calibrated
ProviderName
ftp://swarm-diss.eo.esa.int
ProviderResourceName
EFI TII Cross-Track Flow Data
ProviderProcessingLevel
Calibrated
InstrumentIDs
MeasurementType
ElectricField
TemporalDescription
TimeSpan
StartDate
2015-11-01 15:58:14Z
StopDate
2017-12-31 14:00:03Z
Cadence
PT0.5S
ObservedRegion
Earth.Magnetosphere
Caveats
Data coverage is not continuous. Starting in 2014 EFI TII operations have been limited to a small number of orbits per day. Experience has shown that daily rest periods have the effect of stabilizing the TII imaging performance. Effort has been made to remove background levels on an orbital timescale. Significant non-geophysical offsets can remain, however, and the TII team urges caution in interpreting flow variations spanning time-scales larger than a few to 10s of minutes. Horizontal flow data flagged calibration level 2 are for the most part suitable for research and publication. The flagging algorithm currently does not perform as well for the vertical flow measurements. The EFI team continues to work on improving the flagging algorithm, and solicits and welcomes feedback from the scientific community on the data quality. Because along-track flow is assumed to be the satellite speed (~7.6 km/s), real flow variations in the along-track direction will appear in the cross-track direction when the angle between the ram flow and the satellite x-axis is non-zero. Apparent variations typically not exceeding 100 – 200 m/s in the cross-track flow due to large-amplitude along-track flow variations can be expected mainly at high latitudes. 2 Hz ion cross-track flow speed : * vy_ion - horizontal flow speed in co-rotating frame. Positive values are to the right, facing forward * vz_ion - vertical flow speed in co-rotating frame. Positive values are downward. * v_corot - Co-rotation signal. Can be added to viy to get approximate horizontal cross-track component of ion velocity in inertial frame of reference. Electric field : * ex - component parallel to along-track direction in co-rotating frame. Calculated from -vxB assuming along-track ion velocity component is zero * ey - component in cross-track horizontal direction in co-rotating frame. Positive values are to the right facing forward. Calculated from -vxB assuming along-track ion velocity component is zero. * ez - component in cross-track vertical direction in co-rotating frame. Positive values are downward. Calculated from -vxB assuming along-track ion velocity component is zero. Flags : Three quality flags are included for each measurement: vy_qual, vz_qual, and e_qual represent approximate data quality for the y and z components of ion velocity and all components of electric field, respectively. Because electric field is derived from both y and z components of ion velocity, qe is effectively the logical ‘AND’ of the other two flags. The flag meanings are as follows : * -1: ion flow measurements lie outside the nominal measurement range of +- 4 km/s; this encompasses both anomalous measurements and large, geophysical flows. * 0: calibration level 0; do not use in scientific publications except for research into TII imaging anomaly, calibration and validation studies. * 1: calibration level 1: may contain significant uncorrected biases; the data are often of good quality. * 2: calibration level 2: horizontal flows are generally of good quality with reasonable baselines; vertical flows may still contain large variations not of geophysical origin.
Parameter #1
Name
v ion
ParameterKey
swa_v_ion
Units
km/s
RenderingHints
DisplayType
TimeSeries
Structure
Size
2
Element
Name
vy
Qualifier
Component.I
Index
1
ParameterKey
swa_v_ion(0)
Element
Name
vz
Qualifier
Component.J
Index
2
ParameterKey
swa_v_ion(1)
Field
Qualifier
Vector
FieldQuantity
Electric
Parameter #2
Name
vy quality
ParameterKey
swa_vy_qual
RenderingHints
DisplayType
TimeSeries
Support
SupportQuantity
DataQuality
Parameter #3
Name
vz quality
ParameterKey
swa_vz_qual
RenderingHints
DisplayType
TimeSeries
Support
SupportQuantity
DataQuality
Parameter #4
Name
v corot
ParameterKey
swa_v_corot
Description
Co-rotation signal. Can be added to viy to get approximate horizontal cross-track component of ion velocity in inertial frame of reference
Units
m/s
RenderingHints
DisplayType
TimeSeries
Field
FieldQuantity
Electric
Parameter #5
Name
e field
ParameterKey
swa_e
Description
Electric field in co-rotating frame
Units
mV/m
RenderingHints
DisplayType
TimeSeries
Structure
Size
3
Element
Name
ex
Qualifier
Component.I
Index
1
ParameterKey
swa_e(0)
Element
Name
ey
Qualifier
Component.J
Index
2
ParameterKey
swa_e(1)
Element
Name
ez
Qualifier
Component.K
Index
3
ParameterKey
swa_e(2)
Field
Qualifier
Vector
FieldQuantity
Electric
Parameter #6
Name
e quality
ParameterKey
swa_e_qual
RenderingHints
DisplayType
TimeSeries
Support
SupportQuantity
DataQuality