European Space Agency, University of Calgary, 2021, "SW_EFIxTIE_2_", European Space Agency, https://doi.org/10.57780/esa-9a59fd1
| Variable | Units | Description | Dim | Type |
|---|---|---|---|---|
| Timestamp | ms | Milliseconds since Jan 1, UTC | 1 | CDF_EPOCH |
| Latitude | degrees | Geodetic latitude | 1 | CDF_REAL8 |
| Longitude | degrees | Geodetic longitude | 1 | CDF_REAL8 |
| Radius | m | Geocentric radius | 1 | CDF_REAL8 |
| Height | m | Height above WGS84 reference ellipsoid | 1 | CDF_REAL8 |
| QDLatitude | degrees | Quasi-dipole magnetic latitude | 1 | CDF_REAL8 |
| MLT | hour | Magnetic local time | 1 | CDF_REAL8 |
| Ti_meas_drift | K | Ion temperature estimated using Swarm TII drift at high latitudes | 1 | CDF_REAL8 |
| Ti_model_drift | K | Ion temperature estimated using Weimer 2005 model drifts at high latitudes | 1 | CDF_REAL8 |
| Te_adj_LP | K | Corrected Swarm LP electron temperature | 1 | CDF_REAL8 |
| Tn_msis | K | Neutral temperature from NRLMSISE-00 model | 1 | CDF_REAL8 |
| Flag_ti_meas | Bitwise flag for ‘Ti_meas_drift’ identifying included inputs and processes, see section 3.5 in Swarm SITE product description document | 1 | CDF_UINT1 | |
| Flag_ti_model | Bitwise flag for ‘Ti_model_drift’ identifying included inputs and processes, see section 3.5 in Swarm SITE product description document | 1 | CDF_UINT1 |
| Product identifier | EFIxTIE_2_ |
| Definition | Estimated ion temperatures along the Swarm satellite orbits |
| Input data | SW_EXTD_EFIX_LP, SW_EXPT_EFIX_TCT02, empirical models: NRLMSISE-00, HWM14, Weimer 2005 |
| Input time span | 1 day |
| Spatial representation | Estimates along the Swarm satellite’s orbit |
| Time representation | Time series in every 0.5 seconds |
| Units | Kelvin |
| Resolution | 1 K |
| Uncertainty | ~ 20 % |
| Data volume | ~8 MB (daily file) |
| Data format | CDF |
| Output time span | 1 day |
| Update rate | two months |
| Latency | 6 minutes |
| Notes |
| Variable | CDF Type | Unit |
|---|---|---|
| 0 | 0/1 | High-latitude frictional heating omitted/included |
| 1 | 0/1 | Used is high-gain/low-gain LP Te |
| 2 | 0/1 | Estimated ion temperature not available(= −9999)/available |