An intercomparison and evaluation of aircraft‐derived and simulated CO from seven chemical transport models during the TRACE‐P experiment

Christopher M Kiley; Henry E Fuelberg; Paul I Palmer; Dale J Allen; Gregory R Carmichael; Daniel J Jacob; Celine Mari; R. Bradley Pierce; Kenneth E Pickering; Youhua Tang; Oliver Wild; T. Duncan Fairlie; Jennifer A Logan; Glen W Sachse; Todd K Shaack; David G Streets

doi:10.1029/2002JD003089

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An intercomparison and evaluation of aircraft‐derived and simulated CO from seven chemical transport models during the TRACE‐P experiment

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An intercomparison and evaluation of aircraft‐derived and simulated CO from seven chemical transport models during the TRACE‐P experiment

Christopher M Kiley, Henry E Fuelberg, Paul I Palmer, Dale J Allen, Gregory R Carmichael, Daniel J Jacob, Celine Mari, R. Bradley Pierce, Kenneth E Pickering, Youhua Tang, …

Journal of Geophysical Research: Atmospheres, Vol.108(D21), pp.8819-n/a

11/16/2003

DOI: 10.1029/2002JD003089

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Abstract

Four global scale and three regional scale chemical transport models are intercompared and evaluated during NASA's Transport and Chemical Evolution over the Pacific (TRACE‐P) experiment. Model simulated and measured CO are statistically analyzed along aircraft flight tracks. Results for the combination of 11 flights show an overall negative bias in simulated CO. Biases are most pronounced during large CO events. Statistical agreements vary greatly among the individual flights. Those flights with the greatest range of CO values tend to be the worst simulated. However, for each given flight, the models generally provide similar relative results. The models exhibit difficulties simulating intense CO plumes. CO error is found to be greatest in the lower troposphere. Convective mass flux is shown to be very important, particularly near emissions source regions. Occasionally meteorological lift associated with excessive model‐calculated mass fluxes leads to an overestimation of middle and upper tropospheric mixing ratios. Planetary Boundary Layer (PBL) depth is found to play an important role in simulating intense CO plumes. PBL depth is shown to cap plumes, confining heavy pollution to the very lowest levels.

Details

Title: Subtitle: An intercomparison and evaluation of aircraft‐derived and simulated CO from seven chemical transport models during the TRACE‐P experiment
Creators: Christopher M Kiley - Florida State University
Henry E Fuelberg - Florida State University
Paul I Palmer - Harvard University
Dale J Allen - University of Maryland
Gregory R Carmichael - University of Iowa
Daniel J Jacob - Harvard University
Celine Mari - UMR CNRS/Universite Paul Sabatier
R. Bradley Pierce - NASA Langley Research Center
Kenneth E Pickering - University of Maryland
Youhua Tang - University of Iowa
Oliver Wild - Frontier Research System for Global Change
T. Duncan Fairlie - Harvard University
Jennifer A Logan - Harvard University
Glen W Sachse - NASA Langley Research Center
Todd K Shaack - University of Wisconsin
David G Streets - Argonne National Laboratory
Resource Type: Journal article
Publication Details: Journal of Geophysical Research: Atmospheres, Vol.108(D21), pp.8819-n/a
DOI: 10.1029/2002JD003089
ISSN: 0148-0227
eISSN: 2156-2202
Number of pages: 28
Language: English
Date published: 11/16/2003
Academic Unit: Civil and Environmental Engineering; Nursing; Chemical and Biochemical Engineering
Record Identifier: 9984003994202771

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