Evaluating regional emission estimates using the TRACE‐P observations

作者：G. R. Carmichael, Youhua Tang, Gakuji Kurata, I. Uno, David G. Streets, Narisara Thongboonchoo, Jung‐Hun Woo, Sarath Guttikunda, A. White, Tao Wang, D. R. Blake, E. Atlas, Alan Fried, B. Potter, M. A. Avery, G. W. Sachse, S. T. Sandholm, Y. Kondo, R. W. Talbot, A. R. Bandy, D. Thorton, Andrew Clarke · 发表于：Journal of Geophysical Research Atmospheres · 年份：2003 · DOI：10.1029/2002jd003116 · 被引用次数：172 · 研究领域：Atmospheric chemistry and aerosols、Atmospheric Ozone and Climate、Vehicle emissions and performance

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, SO 2 , and NO x . Furthermore, based on model skill in predicting important photochemical species such as O 3 , HCHO, OH, HO 2 , and HNO 3 , 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 domes...