Examination of the Community Multiscale Air Quality (CMAQ) model performance over the North American and European domains

被引:72
|
作者
Appel, K. Wyat [1 ]
Chemel, Charles [2 ]
Roselle, Shawn J. [1 ]
Francis, Xavier V.
Hu, Rong-Ming
Sokhi, Ranjeet S.
Rao, S. T. [1 ]
Galmarini, Stefano [3 ]
机构
[1] US EPA, Atmospher Modeling & Anal Div, Natl Exposure Res Lab, Off Res & Dev, Res Triangle Pk, NC 27711 USA
[2] Univ Hertfordshire, Natl Ctr Atmospher Sci, Ctr Atmospher & Instrumentat Res, Hatfield AL10 9AB, Herts, England
[3] Commiss European Communities, Joint Res Ctr, Inst Environm & Sustainabil, I-21020 Ispra, Italy
关键词
CMAQ; Ozone; Particulate matter; Air quality modeling; Model evaluation; AQMEII; ATMOSPHERIC BOUNDARY-LAYER; NONLOCAL CLOSURE-MODEL; PART I; SYSTEM;
D O I
10.1016/j.atmosenv.2011.11.016
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The CMAQ modeling system has been used to simulate the air quality for North America and Europe for the entire year of 2006 as part of the Air Quality Model Evaluation International Initiative (AQMEII). The operational model performance of tropospheric ozone (O-3), fine particulate matter (PM2.5) and total particulate matter (PM10) for the two continents has been assessed. The model underestimates daytime (8am-8pm LST) O-3 mixing ratios by 13% in the winter for North America, primarily due to an underestimation of daytime O-3 mixing ratios in the middle and lower troposphere from the lateral boundary conditions. The model overestimates winter daytime O-3 mixing ratios in Europe by an average of 8.4%. The model underestimates daytime O-3 by 4-5% in the spring for both continents, while in the summer daytime O-3 is overestimated by 9.8% for North America and slightly underestimated by 1.6% for Europe. The model overestimates daytime O-3 in the fall for both continents, grossly overestimating daytime O-3 by over 30% for Europe. The performance for PM2.5 varies both seasonally and geographically for the two continents. For North American, PM2.5 is overestimated in the winter and fall, with an average Normalized Mean Bias (NMB) greater than 30%, while performance in the summer is relatively good, with an average NMB of -4.6%. For Europe, PM2.5 is underestimated throughout the entire year, with the NMB ranging from -24% in the fall to -55% in the winter. PM10 is underestimated throughout the year for both North America and Europe, with remarkably similar performance for both continents. The domain average NMB for PK10 ranges between -45% and -65% for the two continents, with the largest underestimation occurring in the summer for North American and the winter for Europe. Published by Elsevier Ltd.
引用
收藏
页码:142 / 155
页数:14
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