diurnal tidal variability in the upper mesosphere and lower thermosphere

Clicks: 130
ID: 158211
1997
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Abstract
We explore tropospheric latent heat release as a source of variability of the diurnal tide in the mesosphere and lower thermosphere (MLT) in two ways. First, we present analyses of the UARS WINDII horizontal wind data, which reveal signatures of nonmigrating tidal effects as large as 25 m/s during both vernal equinox and boreal winter. These effects are of greater relative importance during the latter season. Complementary global-scale wave model (GSWM) results which account for a tropospheric latent heat source generally underestimate the observed nonmigrating tidal effects but capture the seasonal variability that is observed. Second, we pursue a new parameterization scheme to investigate seasonal variability of the migrating diurnal tidal component of the latent heat source with GSWM. These results confirm previously reported seasonal trends, but suggest that the MLT effects may be as much as an order of magnitude larger than earlier predictions.
Reference Key
hagan1997annalesdiurnal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;M. E. Hagan;C. McLandress;J. M. Forbes
Journal journal of food measurement and characterization
Year 1997
DOI
10.1007/s00585-997-1176-x
URL
https://www.ann-geophys.net/15/1176/1997/angeo-15-1176-1997.pdf
Keywords
cosmic physics sciencephysicsgeophysics

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