Evaluating regional emission estimates using the TRACE‐P observations

G. R Carmichael; Y Tang; G Kurata; I Uno; D. G Streets; N Thongboonchoo; J.‐H Woo; S Guttikunda; A White; T Wang; D. R Blake; E Atlas; A Fried; B Potter; M. A Avery; G. W Sachse; S. T Sandholm; Y Kondo; R. W Talbot; A Bandy; D Thorton; A. D Clarke

doi:10.1029/2002JD003116

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Evaluating regional emission estimates using the TRACE‐P observations

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Evaluating regional emission estimates using the TRACE‐P observations

G. R Carmichael, Y Tang, G Kurata, I Uno, D. G Streets, N Thongboonchoo, J.‐H Woo, S Guttikunda, A White, T Wang, …

Journal of Geophysical Research: Atmospheres, Vol.108(D21), pp.8810-n/a

11/16/2003

DOI: 10.1029/2002JD003116

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Abstract

Measurements obtained during the NASA Transport and Chemical Evolution over the Pacific (TRACE‐P) experiment are used in conjunction with regional modeling analysis to evaluate emission estimates for Asia. A comparison between the modeled values and the observations is one method to evaluate emissions. Based on such analysis it is concluded that the inventory performs well for the light alkanes, CO, ethyne, SO2, and NOx. Furthermore, based on model skill in predicting important photochemical species such as O3, HCHO, OH, HO2, and HNO3, it is found that the emissions inventories are of sufficient quality to support preliminary studies of ozone production. These are important finding in light of the fact that emission estimates for many species (such as speciated NMHCs and BC) for this region have only recently been estimated and are highly uncertain. Using a classification of the measurements built upon trajectory analysis, we compare observed species distributions and ratios of species to those modeled and to ratios estimated from the emissions inventory. It is shown that this technique can reconstruct a spatial distribution of propane/benzene that looks remarkably similar to that calculated from the emissions inventory. A major discrepancy between modeled and observed behavior is found in the Yellow Sea, where modeled values are systematically underpredicted. The integrated analysis suggests that this may be related to an underestimation of emissions from the domestic sector. The emission is further tested by comparing observed and measured species ratios in identified megacity plumes. Many of the model derived ratios (e.g., BC/CO, SOx/C2H2) fall within ∼25% of those observed and all fall outside of a factor of 2.5.

biomass burning

chemical transport model

TRACE‐P

emission evaluation

Details

Title: Subtitle: Evaluating regional emission estimates using the TRACE‐P observations
Creators: G. R Carmichael - University of Iowa
Y Tang - University of Iowa
G Kurata - Toyohashi University of Technology
I Uno - Kyushu University
D. G Streets - Argonne National Laboratory
N Thongboonchoo - University of Iowa
J.‐H Woo - University of Iowa
S Guttikunda - University of Iowa
A White - University of California, Davis
T Wang - Hong Kong Polytechnic University
D. R Blake - University of California, Irvine
E Atlas - National Center for Atmospheric Research
A Fried - National Center for Atmospheric Research
B Potter - University of Tulsa
M. A Avery - NASA Langley Research Center
G. W Sachse - NASA Langley Research Center
S. T Sandholm - Georgia Institute of Technology
Y Kondo - University of Tokyo
R. W Talbot - University of New Hampshire
A Bandy - Drexel University
D Thorton - Drexel University
A. D Clarke - University of Hawaii
Resource Type: Journal article
Publication Details: Journal of Geophysical Research: Atmospheres, Vol.108(D21), pp.8810-n/a
DOI: 10.1029/2002JD003116
ISSN: 0148-0227
eISSN: 2156-2202
Number of pages: 17
Language: English
Date published: 11/16/2003
Academic Unit: Civil and Environmental Engineering; Nursing; Chemical and Biochemical Engineering
Record Identifier: 9984003953902771

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