|
Detailed Reference Information |
French, W.J.R., Burns, G.B. and Espy, P.J. (2005). Anomalous winter hydroxyl temperatures at 69°S during 2002 in a multiyear context. Geophysical Research Letters 32: doi: 10.1029/2004GL022287. issn: 0094-8276. |
|
Hydroxyl airglow temperatures measured over Davis station, Antarctica (68¿S, 78¿E) in 2002 are compared to an 8-year climatological mean. The 2002 winter average temperature was 5.1 ¿ 0.8K warmer than the climatological mean. This anomaly is a factor of two larger than what can be attributed to solar flux increases. Of the 210 nightly averages obtained, 72 (34%) exceeded the climatological maximum, primarily in two unusually warm intervals in late-May to early-June and in mid-July. An unusually cold interval (10 nights below the climatological minimum) coincided with a climatological dip in mid-August. Temperature oscillations of 15--20 K amplitude, extending over 4 cycles across the Sep--Oct stratospheric warming correlate with Rothera temperatures and Davis mesospheric winds and are consistent with a 14-day westward propagating zonal planetary wave number 1. |
|
|
|
BACKGROUND DATA FILES |
|
|
Abstract |
|
|
|
|
|
Keywords
Global Change, Climate variability (1635, 3305, 3309, 4215, 4513), Atmospheric Processes, Mesospheric dynamics, Atmospheric Composition and Structure, Airglow and aurora, Atmospheric Processes, Tides and planetary waves, Atmospheric Processes, Remote sensing |
|
Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
|
|
|