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Detailed Reference Information |
Hagan, M.E., Burrage, M.D., Forbes, J.M., Hackney, J., Randel, W.J. and Zhang, X. (1999). GSWM-98: Results for migrating solar tides. Journal of Geophysical Research 104: doi: 10.1029/1998JA900125. issn: 0148-0227. |
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We report on new global-scale wave model (GSWM) predictions for the migrating solar tide in the troposphere, stratosphere, mesosphere and lower thermosphere. The model revision, hereafter GSWM-98, includes an updated gravity wave (GW) stress parameterization and modifications to the background atmosphere based on 6-year monthly averaged Upper Atmosphere Research Satellite (UARS) climatologies. UARS Halogen Occultation Experiment and Microwave Limb Sounder ozone data are used to define the strato-mesospheric tidal source, while GSWM-98 background winds are based on UARS High Resolution Doppler Interferometer (HRDI) zonal mean zonal wind data. We quantify and interpret differences between previous diurnal and semidiurnal predictions, hereafter GSWM-95, and GSWM-98 results. The revised GW stress parameterization accounts for the most profound changes and leads to seasonal variability predictions that are consistent with diurnal amplitudes observed in the upper mesosphere and lower thermosphere. Unresolved differences between HRDI and other wind climatologies significantly affect MLT tidal predictions. ¿ 1999 American Geophysical Union |
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Abstract |
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Keywords
Meteorology and Atmospheric Dynamics, Waves and tides, Ionosphere, Current systems, Magnetospheric Physics, MHD waves and instabilities |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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