A fast semidiurnal tide in the lower thermospheres of Mars and Earth

Details A fast semidiurnal tide in the lower thermospheres of Mars and Earth A fast semidiurnal tide in the lower thermospheres of Mars and Earth

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja.....4793f&link_type=abstract

EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #4793

Mathematics

Scientific paper

Mathematically, an atmospheric solar semidiurnal tide with zonal wavenumber s = 1 propagates westward with phase speed twice as fast as the apparent motion of the Sun with respect to the planetary surface. This fast semidiurnal tide (FST) belongs to a family of FSTs (s denoting the zonal wavenumber, where s > 0 implies westward propagation) that are mainly generated by the interaction of solar migrating (sun- synchronous) s = 2 absorbed radiation or tidal fields with zonal asymmetries at the surface or in the atmosphere. Herein, experimental and modeling evidence are presented that support the existence of FST+1 in the lower thermospheres of Earth and Mars. The global consequences of FST+1 are examined for both planetary atmospheres.

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