Evaluation of high latitude forcing methods and assumptions, and their impact on the thermosphere-ionosphere system
Abstract
During geomagnetic storms magnetospheric energy couples into the thermosphere-ionospheresystem at high latitude via ion convection and auroral particle precipitation. Numerical modelingof geomagnetic storms allows us to study the important processes and is crucial in advancing ourcapabilities of predicting the global storm time effects.In this effort our overall objective is to evaluate common assumptions and characteristics of highlatitude forcing methods in general circulation models by quantifying their effects on the globalthermosphere-ionosphere system. This study will lead to a quantitative understanding of theeffects of these assumptions and help to identify essential improvements in the numericalmodeling of the MI coupling.We will be guided by the following science questions:SQ1. How important are neutral winds in modulating the magnetospheric forcing of the ionconvection and Joule heating?SQ2. What is the sensitivity of the middle and low latitude TI storm-time response tohemispheric differences in the magnetosphere-ionosphere coupling?SQ3. How important is it to consider different scales in the high latitude forcing and to employmutually consistent ion convection and particle precipitation models for the middle and lowlatitude storm time response?
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 11, 2017
- Source ID
- FA95501710248
Entities
People
- Astrid Maute
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University Corporation for Atmospheric Research