The Climatology of Neutral Winds in the MLT Region as Observed From Orbit

Details The Climatology of Neutral Winds in the MLT Region as Observed From Orbit The Climatology of Neutral Winds in the MLT Region as Observed From Orbit

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsa33a..05n&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SA33A-05

Mathematics

Logic

0300 Atmospheric Composition And Structure, 3309 Climatology (1616, 1620, 3305, 4215, 8408), 3332 Mesospheric Dynamics, 3369 Thermospheric Dynamics (0358)

Scientific paper

Unique observations of the horizontal neutral winds in the altitude range 70 to 115 km have been performed from satellite platforms by HRDI and WINDII (UARS) and by TIDI (TIMED), the former since September 1991 and the latter since January 2002. All three experiments observed airglow on the terrestrial limb and derived vertical wind profiles of geophysical quantities by inverting altitude scans of Doppler shifted emission spectra. As a result, the global mesosphere / lower thermosphere region has been sampled for 14 years by a common technique resulting in an unparalleled neutral wind database. This database will be one of the key contributions to an improved Horizontal Wind Model (HWM). This paper will describe results from the first long term climatological study of the MLT region based on satellite wind measurements. The basic dynamic structure in the MLT is a tide, which also has long-term variation that has similar periods to the 27-month QBO (quasi-biennial oscillation) and the SAO (semi-annual oscillation). Signatures of ultra-long variability require analysis of the full wind database.

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