OH temperature re-analysis forced by recent variance increases

Autor:	Dirk Offermann, Wolfgang Steinbrecht, A. I. Semenov, M. Donner, M. Jarisch
Rok vydání:	2006
Předmět:	Atmospheric Science Geophysics Amplitude Meteorology Space and Planetary Science Trend surface analysis Evaluation algorithm Environmental science Variance (accounting) Trend break Atmospheric sciences Mesosphere
Zdroj:	Journal of Atmospheric and Solar-Terrestrial Physics. 68:1924-1933
ISSN:	1364-6826
Popis:	Upper mesosphere temperatures have been derived from hydroxyl near-infrared emissions at Wuppertal (51°N, 7°E) for many years. Recently a strong increase of temperature fluctuations was observed which forced a change of our data evaluation algorithm. Resulting re-analysis temperatures and derived parameters are presented in comparison to the earlier data. Changes are mostly seen in the years since 2001/2002. The re-analysis data show a strong positive trend of short-period fluctuations. There is a trend break at around 2001/2002. The annual amplitudes of the seasonal temperature variations are also measured and show a negative trend recently. Also this trend break occurs at about the same time. It needs to be determined yet whether the two trends are physically related, and what their origin might be.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::13db3058b0f297937e8c270ce8782b11 https://doi.org/10.1016/j.jastp.2006.03.007 Zobrazit plný text záznamu Full Text from ScienceDirect