Peng Li, Zhao Chunsheng, Lin Yunping, Zheng Xiangdong, Tie Xuexi, Chan Lo-Yin
Department of Atmospheric Science, Peking University, Beijing 100871, PR China.
Chemosphere. 2007 Jan;66(8):1383-9. doi: 10.1016/j.chemosphere.2006.09.055. Epub 2006 Nov 7.
A global chemical transport model (MOZART-2; model of ozone and related tracers, version 2) was used to assess physical and chemical processes that control the budget of tropospheric carbon monoxide (CO) in North China. Satellite observations of CO from the measurements of pollution in the troposphere (MOPITT) instrument are combined with model results for the analysis. The comparison between the model simulations and the satellite observations of total column CO (TCO) shows that the model can reproduce the spatial and temporal distributions. However, the model results underestimate TCO by 23% in North China. This underestimation of TCO may be caused by the uncertainties of emissions. The tropospheric CO budget analysis suggests that in North China, surface emission is the largest source of tropospheric CO. The main sinks of tropospheric CO in this region are chemical reaction and stratosphere_and_troposphere exchange. The analysis also shows that most of inflow CO to Pacific regions comes from the upwind regions of North China. This transport of CO is significant during Winter and Spring time.
利用一个全球化学传输模型（MOZART - 2；臭氧及相关示踪物模型，版本2）来评估控制中国北方对流层一氧化碳（CO）收支的物理和化学过程。将对流层污染测量仪（MOPITT）对CO的卫星观测结果与模型结果相结合进行分析。模型模拟结果与总柱CO（TCO）卫星观测结果之间的比较表明，该模型能够再现TCO的时空分布。然而，在中国北方，模型结果低估了TCO的23%。TCO的这种低估可能是由排放的不确定性造成的。对流层CO收支分析表明，在中国北方，地表排放是对流层CO的最大来源。该地区对流层CO的主要汇是化学反应和平流层与对流层的交换。分析还表明，流入太平洋地区的大部分CO来自中国北方的上风区域。这种CO的传输在冬季和春季较为显著。
