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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
STn(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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