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Stratospheric CH 3 CN from the UARS Microwave Limb Sounder
Author(s) -
Livesey Nathaniel J.,
Waters Joe W.,
Khosravi Rashid,
Brasseur Guy P.,
Tyndall Geoffrey S.,
Read William G.
Publication year - 2001
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2000gl012144
Subject(s) - microwave limb sounder , stratosphere , middle latitudes , atmosphere (unit) , atmospheric sciences , satellite , environmental science , equator , tropics , microwave , latitude , meteorology , geology , physics , geodesy , astronomy , fishery , biology , quantum mechanics
CH 3 CN in the stratosphere has been measured by the Microwave Limb Sounder (MLS) on the Upper Atmosphere Research Satellite (UARS), providing the first global CH 3 CN dataset. The MLS observations are in broad agreement with past high and midlatitude observations of CH 3 CN, although concentrations are a little larger than previously observed. In the tropics, where CH 3 CN has not up to now been measured, a persistent ‘peak’ in the profiles is seen around 22 hPa, which may be evidence of a tropical stratospheric CH 3 CN source. Comparisons are made with the NCAR SOCRATES model, including runs having an artificial tropical stratospheric CH 3 CN source.
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