Table 3 Content of CryoSat-2 magnetic data product
Element | Contents | Units |
|---|---|---|
Timestamp | Time of observation | CDF_EPOCH |
Latitude | Latitude of observation in the International Terrestrial Reference Frame (ITRF) | degree |
Longitude | Longitude of observation in the ITRF | degree |
Radius | Radius of observation in ITRF | m |
B_FGM1 | Magnetic field vector in the instrument frame of the FGM1 magnetometer | nT |
B_FGM2 | Magnetic field vector in the instrument frame of the FGM2 magnetometer | nT |
B_FGM3 | Magnetic field vector in the instrument frame of the FGM3 magnetometer | nT |
B_NEC1 | Magnetic field vector in the NEC (North, East, Center) frame based on FGM1 data | nT |
B_NEC2 | Magnetic field vector in the NEC (North, East, Center) frame based on FGM2 data | nT |
B_NEC3 | Magnetic field vector in the NEC (North, East, Center) frame based on FGM3 data | nT |
B_NEC | Magnetic field vector in the NEC (North, East, Center) frame, 5-sample (i.e. 20 s) robust running average of data from up to 3 FGMs (only for q_error\(< 30\)) | nT |
F | Magnetic field intensity determined from B_NEC | nT |
B_mod_NEC | Model magnetic field vector in the NEC (North, East, Center) frame based on CHAOS-6 geomagnetic field model | nT |
q_NEC_CRF | Rotation from NEC frame to STR Common Reference Frame (CRF), quaternion (NEC \(\leftarrow \) CRF) | – |
q_error | Error estimate on attitude information | Arcsecs |