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Connecting surface emissions, convective uplifting, and long‐range transport of carbon monoxide in the upper troposphere: New observations from the Aura Microwave Limb Sounder
Author(s) -
Jiang Jonathan H.,
Livesey Nathaniel J.,
Su Hui,
Neary Lori,
McConnell John C.,
Richards Nigel A. D.
Publication year - 2007
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 - 10.1029/2007gl030638
Subject(s) - microwave limb sounder , troposphere , environmental science , atmospheric sciences , boreal , convection , climatology , range (aeronautics) , geology , meteorology , geography , materials science , paleontology , composite material
Two years of observations of upper tropospheric (UT) carbon monoxide (CO) from the Aura Microwave Limb Sounder are analyzed; in combination with the CO surface emission climatology and data from the NCEP analyses. It is shown that spatial distribution, temporal variation and long‐range transport of UT CO are closely related to the surface emissions, deep‐convection and horizontal winds. Over the Asian monsoon region, surface emission of CO peaks in boreal spring due to high biomass burning in addition to anthropogenic emission. However, the UT CO peaks in summer when convection is strongest and surface emission of CO is dominated by anthropogenic source. The long‐range transport of CO from Southeast Asia across the Pacific to North America, which occurs most frequently during boreal summer, is thus a clear imprint of Asian anthropogenic pollution influencing global air quality.