Jared Bell

TL;DR: In this article, the authors used observations of the Mars upper atmosphere made from the Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft to determine the loss rates of gas from the upper atmosphere to space for a complete Mars year (16 Nov 2014 − 3 Oct 2016).

TL;DR: In this paper, a new Mars Global Ionosphere-Thermosphere Model (M-GITM) is presented that combines the terrestrial GITM framework with Mars fundamental physical parameters, ion-neutral chemistry, and key radiative processes in order to capture the basic observed features of the thermal, compositional, and dynamical structure of the Mars atmosphere from the ground to the exosphere (0-250 km).

TL;DR: Observations and models both show an enhancement in escape rate of ions to space during the Mars upper atmosphere, ionosphere, and interactions with the Sun and solar wind during an interplanetary coronal mass ejection impact in March 2015.

TL;DR: In this article, an analysis of the data observed by INMS during these encounters was presented to derive the neutral composition of Titan's upper atmosphere between 1000 and 1100 km. Analysis methods were described for the determination and correction of instrument effects as well as the composition derivation processes.

TL;DR: Bougher et al. as discussed by the authors used global model simulations to investigate the physical processes driving seasonal variations in the martian lower thermosphere, showing that the stronger interhemispheric circulation during northern winter is driven by stronger insolation and dust heating near perihelion, resulting in subsidence and warmer temperatures in the northern polar night.