Extended dataset of the Electric field instrument (EFI) Langmuir probe (LP) measurements at 2Hz
Thematic areas: Plasma measurements, Space Weather
Applicable missions: Swarm
Applicable spacecraft: Swarm-A, Swarm-B, Swarm-C
Extended Swarm Electric field instrument (EFI) data from the Langmuir probes (LP) in the so-called “harmonic submode”, with a 2 Hz cadence. The dataset contains the electron temperature and spacecraft potential measured separately by the two probes.
N/A
(delivered separately)
| Variable | Units | Description | Dim | Type |
|---|---|---|---|---|
| Timestamp | ms | Time stamp of faceplate current measurement since 01-Jan-0000 00:00:00.000 | 1 | CDF_EPOCH |
| Latitude | deg | Geodetic latitude, WGS84 | 1 | CDF_DOUBLE |
| Longitude | deg | Geodetic longitude, WGS84 | 1 | CDF_DOUBLE |
| Height | km | Height above reference ellipsoid, WGS84 | 1 | CDF_DOUBLE |
| Radius | km | Distance from the Earth's centre | 1 | CDF_DOUBLE |
| SZA | deg | Solar Zenith Angle | 1 | CDF_DOUBLE |
| SAz | deg | Solar Azimuth in Earth frame, north is 0 deg | 1 | CDF_DOUBLE |
| ST | hours | Apparent Solar Time | 1 | CDF_DOUBLE |
| Diplat | deg | Quasi-dipole latitude | 1 | CDF_DOUBLE |
| Diplon | deg | Quasi-dipole longitude | 1 | CDF_DOUBLE |
| MLat | deg | Magnetic latitude | 1 | CDF_DOUBLE |
| MLT | hours | Magnetic local time based on quasi-dipole | 1 | CDF_DOUBLE |
| AACGMLat | deg | Altitude-adjusted corrected geomagnetic latitude | 1 | CDF_DOUBLE |
| AACGMLon | deg | Altitude-adjusted corrected geomagnetic longitude | 1 | CDF_DOUBLE |
| n | cm-3 | Plasma density from ion current | 1 | CDF_DOUBLE |
| Te_hgn | K | Electron temperature, estimated by the high gain probe | 1 | CDF_DOUBLE |
| Te_lgn | K | Electron temperature, estimated by the low gain probe | 1 | CDF_DOUBLE |
| T_elec | K | Electron temperature, blended value | 1 | CDF_DOUBLE |
| Vs_hgn | V | Spacecraft potential, estimated by the high gain probe | 1 | CDF_DOUBLE |
| Vs_lgn | V | Spacecraft potential, estimated by the low gain probe | 1 | CDF_DOUBLE |
| U_SC | V | Spacecraft potential, blended value | 1 | CDF_DOUBLE |
| Flagbits | - | Flag bits indicating data quality or instrument configuration | 1 | CDF_INT4 |
N/A
Product Descriptions:
N/A