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Table 1.
List of input (both measured and model) parameters used in the method and the retrieved ones.
| Parameter | Comments |
|---|---|
| Measured input parameter | |
| Daily F10.7 | Used in solar EUV model |
| F10.7 for the previous day | Used in MSIS-86 model |
| 81-day running mean F10.7 | Used in MSIS-86 model |
| Daily Ap index | Used in MSIS-86 model |
| Observed Ne(h) | Either from Digisonde (bottomside ARTIST inversion) or ISR electron density profile |
| Model input parameters | |
| Solar EUV flux | Nusinov (1992) EUV model |
| Background F10.7 | Used in solar EUV model |
| Rate constants of all physical and chemical processes | Used in model calculations |
| Tn(h) dependence | T n = f (Tex, S, T120) MSIS-86 model dependence |
| T120 neutral temperature at 120 km | MSIS-86 model values |
| Neutral N(4S) | MSIS-86 model values used in ion model calculations |
| NeQuick Ne(h) topside | Used to extrapolate to the topside the ARTIST Digisonde Ne(h) |
| Retrieved parameter | |
| Exospheric temperature Tex | Parameters simultaneously retrieved from the observed Ne(h) using the proposed method |
| S–Tn(h) shape parameter | |
| Atomic oxygen concentration | |
| Molecular oxygen concentration | |
| Molecular nitrogen concentration | |
| Vertical plasma drift | |
| Electron temperature Te (at the upper boundary) | Parameters used to solve the energy balance equation |
| Heating efficiency ε | |
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