Seasonal variations and inter-year trends in 7 years of hydroxyl airglow rotational temperatures at Davis station (69°S,78°E), Antarctica

Details Seasonal variations and inter-year trends in 7 years of hydroxyl airglow rotational temperatures at Davis station (69°S,78°E), Antarctica Seasonal variations and inter-year trends in 7 years of hydroxyl airglow rotational temperatures at Davis station (69°S,78°E), Antarctica

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002jastp..64.1167b&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 64, Issue 8-11, p. 1167-1174.

Physics

20

Scientific paper

Seasonal variation of hydroxyl rotational-temperatures above Davis, Antarctica (68.6°S, 78.0°E) is determined from 1148 nightly means collected over 7 years (1990 and 1995-2000). Measurements are limited by sunlight at this latitude to between day-of-year (DOY) 49 and 296. Sharp temperature transitions, particularly in autumn (1.2Kd-1), bracket an extended winter maximum with a slow temperature decrease (-0.03Kd-1 from DOY 85 to 260). Seasonal variability and absolute magnitudes (206+/-4K for a 1 July average across the years measured) are very similar to measurements at a comparable northern latitude (Lübken and von Zhan, 1991). A solar cycle association of 0.06K(sfu)-1 (10.7cm solar flux unit=10-22Wm-2Hz-1), implying a 7K variation over a 120sfu range solar cycle, fits the measured winter temperatures.

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