A comparison of hydroxyl rotational temperatures from Davis (69°S, 78°E) with sodium lidar temperatures from Syowa (69°S, 39°E)

Details A comparison of hydroxyl rotational temperatures from Davis (69°S, 78°E) with sodium lidar temperatures from Syowa (69°S, 39°E) A comparison of hydroxyl rotational temperatures from Davis (69°S, 78°E) with sodium lidar temperatures from Syowa (69°S, 39°E)

Jan 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30a..25b&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 1, pp. 25-1, CiteID 1025, DOI 10.1029/2002GL016413

Physics

6

Atmospheric Composition And Structure: Airglow And Aurora, Atmospheric Composition And Structure: Middle Atmosphere-Energy Deposition, Atmospheric Composition And Structure: Middle Atmosphere-Constituent Transport And Chemistry (3334)

Scientific paper

We report the first substantive inter-site comparison of high southern latitude mesopause region winter temperatures. Davis (69°S, 78°E) hydroxyl rotational nightly-mean temperatures are significantly correlated with Syowa (69°S, 39°E) sodium lidar nightly-mean temperatures at 87 km made in 2000 (correlation coefficient of 0.68) and 2001 (0.51) despite a site separation of ~1500 km. The Davis winter average temperature in 2001, 203 K, differs from the Syowa value of 201 K only by the uncertainty in the measurement. A more substantial 7 K separates the year 2000 winter averages, Davis again being warmer. The temperature difference between the sites is attributed to either variations in the hydroxyl layer or short-term cooling events in the mesopause region above Syowa that are not detected above Davis. Syowa winter temperatures at 87 km are ~7 K cooler than for an equivalent latitude northern hemisphere site.

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