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Evaluation of pollutant outflow and CO sources during TRACE‐P using model‐calculated, aircraft‐based, and Measurements of Pollution in the Troposphere (MOPITT)‐derived CO concentrations

Journal Article · · Journal of Geophysical Research
 [1];  [2];  [3]
  1. Department of Meteorology University of Maryland College Park Maryland USA; University of Maryland, College Park, MD
  2. Department of Meteorology University of Maryland College Park Maryland USA
  3. Earth System Sciences Interdisciplinary Center University of Maryland College Park Maryland USA
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Outflow of CO from Asia during March 2001 is evaluated using data from the Transport and Chemical Evolution over the Pacific (TRACE-P) mission and the Measurements of Pollution in the Troposphere (MOPITT) instrument in conjunction with model-calculated CO from the University of Maryland chemistry and transport model (UMD CTM). Comparison of model-calculated CO with aircraft measurements indicates that temporal and spatial variations in CO are well captured by the model (mean correlation coefficient of 0.78); however, model-calculated mixing ratios are lower than observed especially for pressures >850 hPa where negative biases of 60 ppbv were seen. Regression analysis is used to optimize the magnitudes of the bottom-up TRACE-P Asian fossil fuel (FF), biofuel (BF), and biomass burning (BB) CO emission inventories. Comparison of model-calculated CO with MOPITT measurements supports the results from our regression analysis. Without exception, mean March 2001 model-calculated CO profiles in the TRACE-P region from a simulation with adjusted CO sources are within a standard deviation of mean March 2001 MOPITT-sampled profiles.

Research Organization:
Univ. of Maryland, College Park, MD (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
FG02-01ER63197
OSTI ID:
953704
Report Number(s):
DOE-CCPP-JGR-2004-Allen; 0007185
Journal Information:
Journal of Geophysical Research, Journal Name: Journal of Geophysical Research Journal Issue: D15 Vol. 109; ISSN 0148-0227
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English

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