Top-down estimates of global CO sources using MOPITT measurements
نویسندگان
چکیده
Newly available space-based measurements of carbon monoxide (CO) from the MOPITT (Measurements of Pollution in the Troposphere) instrument offer a unique perspective on tropospheric chemistry. We present a synthesis inversion of CO emissions from various geographical regions and for various source categories for the year 2000 using MOPITT CO retrievals. We find a large discrepancy between our top-down estimates and recent bottom-up estimates of CO emissions from fossil fuel/biofuel (FFBF) use in Asia. A key conclusion of this study is that CO emissions in East Asia (EAS) are about a factor of 1.7-1.9 higher than recent bottomup estimates. This finding provides strong support for results from previous inverse modeling studies based on surface CO measurements from a limited number of sites and from forward and inverse modeling analysis based on short-term aircraft measurements.
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