Temperature Trends in the Polar Mesosphere between 2002--2007 using TIMED/SABER Data

Details Temperature Trends in the Polar Mesosphere between 2002--2007 using TIMED/SABER Data Temperature Trends in the Polar Mesosphere between 2002--2007 using TIMED/SABER Data

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsa43a1574g&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SA43A-1574

Physics

0340 Middle Atmosphere: Composition And Chemistry, 0350 Pressure, Density, And Temperature, 2427 Ionosphere/Atmosphere Interactions (0335), 3332 Mesospheric Dynamics

Scientific paper

The TIMED Satellite was launched on December 7, 2001 to study the dynamics and energy of the mesosphere and lower thermosphere. The TIMED/SABER instrument is a limb scanning infrared radiometer designed to measure a large number of minor constituents as well as the temperature of the region. In this study, we have concentrated on the polar mesosphere, to investigate the temperature characteristics as a function of spatial and temporal considerations. We used the recently revised SABER dataset (1.07) that contains improved temperature retrievals in the Earth polar summer regions. Weekly averages are used to make comparisons between the winter and summer, as well as to study the variability in different quadrants of each hemisphere. For each year studied, the duration of polar summer based on temperature measurements compares favorably with the PMSE (Polar Mesospheric Summer Echoes) season measured by radar at the ALOMAR Observatory in Norway (69°N). The PMSE period should also define the summer period suitable for the occurrence of polar mesospheric clouds. The unusual short and relatively warm polar summer in the northern hemisphere during 2002 is also clearly defined in this analysis and shown to be unique for the period analyzed.

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