Global distribution and climatological features of the 5-6-day planetary waves seen in the SABER/TIMED temperatures (2002-2007)

Details Global distribution and climatological features of the 5-6-day planetary waves seen in the SABER/TIMED temperatures (2002-2007) Global distribution and climatological features of the 5-6-day planetary waves seen in the SABER/TIMED temperatures (2002-2007)

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jastp..72...26p&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 72, Issue 1, p. 26-37.

Physics

3

5-Day Internal Normal Mode, 6-Day Kelvin Waves, Stratosphere-Mesosphere-Lower Thermosphere Coupling

Scientific paper

The paper is focused on the global spatial structure, seasonal and interannual variability of the ~5-day Rossby (W1) and ~6-day Kelvin (E1) waves derived from the SABER/TIMED temperature measurements for 6 full years (January 2002-December 2007). The latitude structure of the ~5-day W1 wave is related to the gravest symmetric wave number 1 Rossby wave. The vertical structure of the ~5-day Rossby wave amplitude consists of double-peaked maxima centred at ~80-90 km and ~105-110 km. This wave has a vertically propagating phase structure from the stratosphere up to 120 km altitude with a mean vertical wavelength of ~50-60 km. The ~6-day E1 wave is an equatorially trapped wave symmetric about the equator and located between 20°N and 20°S. Its seasonal behaviour indicates some equinoctial and June solstice amplifications, while the vertical phase structure indicates that this is a vertically propagating wave between 20-100 km altitudes with a mean vertical wavelength of ~25 km.

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