Isadore Harris

TL;DR: In this article, an analysis of the integro-differential equation which describes the physical processes of the upper atmosphere is carried out, and it is found that heating of the thermosphere due to absorption of the solar extreme ultraviolet (EUV) radiation alone cannot explain the observed diurnal variation of density and temperature, since it would yield a maximum of these properties at about 17h local time, instead of 14h where it is observed.

TL;DR: In this article, a model of the upper atmosphere for different levels of solar activity has been calculated by solving the heat conduction equation under quasi-hydrostatic conditions by means of the procedure described in detail in a previous paper.

TL;DR: In this article, a multiconstituent circulation model was used to analyze the midnight temperature anomaly observed on Atmosphere Explorer-E. The model showed that this feature and associated variations in composition are the result of a complex interaction between the semidiurnal tide generated in the lower atmosphere and ion-neutral momentum coupling associated with the diurnal variation of the ion density.

TL;DR: In this article, the authors present some numerical experiments performed with the TFM to study the various wave components excited in the auroral regions that propagate through the lower atmosphere and demonstrate the properties of realistic source geometries.

TL;DR: In this paper, a three-dimensional model has been developed to describe momentum coupling between high-latitude electric fields, neutral winds, temperature, and composition, and the Hall drag is found to be the main source for atmospheric winds and the small divergence component of winds is due to the Pedersen drag and Hall drag.