Impact of terrestrial weather on the upper atmosphere
Article first published online: 10 MAY 2008
Copyright 2008 by the American Geophysical Union.
Geophysical Research Letters
Volume 35, Issue 9, May 2008
How to Cite
2008), Impact of terrestrial weather on the upper atmosphere, Geophys. Res. Lett., 35, L09808, doi:10.1029/2007GL032911., et al. (
- Issue published online: 10 MAY 2008
- Article first published online: 10 MAY 2008
- Manuscript Accepted: 2 APR 2008
- Manuscript Revised: 17 MAR 2008
- Manuscript Received: 5 DEC 2007
- upper atmosphere variability;
- planetary waves;
 A whole atmosphere model has been developed to demonstrate the impact of terrestrial weather on the upper atmosphere. The dynamical core is based on the NWS Global Forecast System model, which has been extended to cover altitudes from the ground to 600 km. The model includes the physical processes responsible for the stochastic nature of the lower atmosphere, which is a source of variability for the upper atmosphere. The upper levels include diffusive separation, wind induced transport of major species, and uses specific enthalpy as the dependent variable, to accommodate composition dependent gas constants and specific heats. A one-year model simulation reveals planetary waves explicitly up to 100 km altitude. At higher altitude, multi-day periodicities in the dynamics appear as a modulation of tidal amplitudes, particularly the migrating semi-diurnal tide in the lower thermosphere dynamo region. The penetration of planetary wave periodicities from tropospheric weather into the upper atmosphere can explain terrestrial weather sources of variability in the thermospheric and ionospheric.