全球智库信息集成服务系统(G2TT): MICS-Asia II: Model intercomparison and evaluation of ozone and relevant species.

G2TT

来源类型	Article
规范类型	其他
DOI	10.1016/j.atmosenv.2007.07.031
	MICS-Asia II: Model intercomparison and evaluation of ozone and relevant species.
	Han Z; Sakurai T; Ueda H; Carmichael GR; Streets D; Hayami H; Wang Z; Thongboonchoo N
发表日期	2008
出处	Atmospheric Environment 42 (15): 3491-3509
出版年	2008
语种	英语
摘要	Eight regional Eulerian chemical transport models (CTMs) are compared with each other and with an extensive set of observations including ground-level oncentrations from EANET, ozone soundings from JMA and vertical profiles from the TRACE-P experiment to evaluate the models abilities in simulating O3 and relevant species (SO2, NO, NO2, HNO3 and PAN) in the troposphere of East Asia and to look for similarities and differences among model performances. Statistical analysis is conducted to help estimate the consistency and discrepancy between model simulation and observation in terms of various species, seasons, locations, as well as altitude ranges. In general, all models show a good skill of simulating SO2 for both ground level and the lower troposphere, although two of the eight models systematically overpredict SO2 concentration. The model skills for O3 vary largely with region and season. For ground-level O3, model results are best correlated with observations in July 2001. Comparing with O3 soundings measured in the afternoon reveals the best consistency among models in March 2001 and the largest disparity in O3 magnitude in July 2001, although most models produce the best correlation in July as well. In terms of the statistics for the four flights of TRACE-P experiment, most models appear to be able to accurately capture the variability in the lower troposphere. The model performances for NOx are relatively poor, with lower correlation and with almost all models tending to underpredict NOx levels, due to larger uncertainties in either emission estimates or complex chemical mechanism represented. All models exhibit larger RMSE at altitudes <2 km than 2 -5.5 km, mainly due to a consistent tendency of these models towards underprediction of the magnitude of intense plumes that often originate from near surface. Relatively lower correlation at altitudes 2-5.5 km may be attributed to the models limitation in representing convection or potential chemical processes. Most of the key features in species distribution have been consistently reproduced by the participating models, such as the O3 enhancement in the western Pacific Ocean in March and in northeast Asia in July, respectively, although the absolute model values may differ considerably from each other. Large differences are found among models in the southern parts of the domain for all the four periods, including southern China and northern parts of some Southeast Asia countries where the behaviors of chemical components and the ability of these models are still not clearly known because of a lack of observational databases.
主题	Atmospheric Pollution (APD)
关键词	Chemical transport model EANET TRACE-P Evaluation Model intercomparison O3 and relevant species Seasonality
URL	http://pure.iiasa.ac.at/id/eprint/8557/
来源智库	International Institute for Applied Systems Analysis (Austria)
引用统计
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/128836
推荐引用方式 GB/T 7714	Han Z,Sakurai T,Ueda H,et al. MICS-Asia II: Model intercomparison and evaluation of ozone and relevant species.. 2008.