Magnetic measurements derived from GRACE platform magnetometers
Citation: Technical University of Denmark. (2022). GRACE_x_MAG. European Space Agency. https://swarmhandbook.earth.esa.int/catalogue/GRACE_x_MAG
Product types: GRACE_A_MAG, GRACE_B_MAG
Authored by: Technical University of Denmark - https://ror.org/04qtj9h94
Creation year: 2022
Thematic areas: Magnetic measurements
Applicable missions: GRACE
Applicable spacecraft: GRACE-A, GRACE-B
This product contains calibrated magnetic measurements derived from GRACE platform magnetometers
(delivered separately)
| Variable | Units | Description | Dim | Type |
|---|---|---|---|---|
| Timestamp | - | Time stamp | 1 | CDF_EPOCH |
| Latitude | deg | Position in ITRF: Geocentric latitude | 1 | CDF_DOUBLE |
| Longitude | deg | Position in ITRF: Geocentric longitude | 1 | CDF_DOUBLE |
| Radius | m | Position in ITRF: Geocentric Radius | 1 | CDF_DOUBLE |
| B_FGM | nT | calibrated magnetic vector from FGM, in instrument frame | 3 | CDF_DOUBLE |
| B_NEC_raw | nT | calibrated and aligned magnetic vector in NEC (North, East, Center) frame | 3 | CDF_DOUBLE |
| B_NEC | nT | calibrated and aligned magnetic vector in NEC (North, East, Center) frame, 11 sample (i.e. 11 second) robust average | 3 | CDF_DOUBLE |
| F | nT | magnetic field intensity determined from B_NEC | 1 | CDF_DOUBLE |
| q_NEC_CRF | - | Quaternion, transformation: NEC <- CRF | 4 | CDF_DOUBLE |
| q_error | - | experimental error indicator of attitude given in Quaternion q_NEC_CRF. Bad attitude if > approx 40 | 1 | CDF_DOUBLE |
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