Jm. Forbes et al., Simulations of diurnal tides due to tropospheric heating from the NCEP/NCAR Reanalysis Project, GEOPHYS R L, 28(20), 2001, pp. 3851-3854
Diurnal tides are forced in a global-scale wave model using monthly mean tr
opospheric heating rates from the NCEP/NCAR Reanalysis Project. The heating
rates give rise to a semiannual variation in the migrating (sun-synchronou
s) tidal wind response near 95 km altitude with, equinoctial maxima (simila
r to 50-70 ms(-1)) similar in magnitude to those derived from observational
data. Nonmigrating (longitude-dependent) tides with zonal wavenumbers s =
-3 (eastward) to s = +5 (westward) are also generated. Many of these oscill
ations are characterized by wind and temperature amplitudes of order 20-30
ms(-1) and 10-20 X in the lower thermosphere (100-130 km), and suggest that
the tidal response in this regime varies considerably with longitude.