TD-88Up: Upgraded neutral Earth's thermosphere total density TD-88 model

Abstract

Improved constants of the total density TD-88 model for the Earth's neutral thermosphere are calculated. The model is fully functional within the height range of 200 to 500 km, with fixed values of the mean solar flux and geomagnetic index. The control data of the atmospheric air density are derived from the aeronomical NRLMSISE-00 model which was used as the reference one. The upgraded TD-88, named TD-88Up, model is obtained by the extended LSQ method with varying all model parameters.Uradjena je popravka koeficijenata TD- 88 modela neutralne termosfere Zemlje. Model je potpuno funkcionalan u opsegu visina od 200 do 500 km, sa fiksnim vrednostima srednjeg solarnog fluksa i geomagnetnog indeksa. Kontrolni podaci atmosferskih gustina izvedeni su iz aeronomskog NRLMSISE-00 modela, koji je koriscen kao referentni. Prosirenom metodom najmanjih kvadrata sa variranjem svih parametara modela, dobijen je unapredjen model, oznacen sa TD-88Up.