Statistics – Computation
Scientific paper
Oct 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.8951a&link_type=abstract
Journal of Geophysical Research, Volume 87, Issue C11, p. 8951-8966
Statistics
Computation
40
Scientific paper
A computationally effcient two-stream parameterization of IR cooling is developed for a middle atmosphere dynamics model. The parameterization combines the monochromatic feature of an emissivity formulation with the computational simplicity of a single spatial integral to evaluate the monochromatic transfer equation. Our calculations show strong radiative control of the mesopause region (radiative relaxation rate >[5 days]-1) and the need for substantial deceleration of the mean zonal winds (~40 m s-1 day-1). Calculated temperatures show good agreement in the summer hemisphere where planetary wave activity is negligible, but in the polar night of the winter hemisphere they are ~30°K too cold which suggests planetary wave heating must make up the deficit. With observed ozone densities our globally averaged radiative equilibrium temperature in the 65-75 km region are too cold and an additional heat source ~1°K day -1 is required.
Apruzese John P.
Schoeberl Mark R.
Strobel Darrell F.
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