J. T. Emmert

TL;DR: The Horizontal Wind Model (HWM07) as mentioned in this paper provides a statistical representation of the horizontal wind fields of the Earth's atmosphere from the ground to the exosphere (0-500 km).

TL;DR: In this article, the authors used global-average thermospheric total mass density, derived from the drag effect on the orbits of many space objects, to study the behavior of the thermosphere during the prolonged minimum in solar activity between cycles 23 and 24.

TL;DR: In this article, the authors derived trends in upper thermospheric density from the historical orbital elements of 27 long-lived, near-Earth space objects and examined several possible sources of error in their results and concluded that none of them can individually account for the observed trends.

TL;DR: NRLMSIS® 2.0 as mentioned in this paper is a major, reformulated upgrade of the previous version, NRLMSISE•00, which couples thermospheric species densities to the entire column, via an effective mass profile that transitions each species from the fully mixed region below ~70 km altitude to the diffusively separated region above ~200 km.

TL;DR: In this paper, the authors used orbit data on ∼5000 near-Earth space objects to investigate long-term trends in thermospheric total mass density, which has been predicted to decrease with time due to increasing CO2 concentrations.