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用卫星资料分析中国区域CO柱总量时空分布特征
引用本文:白文广,张鹏,张兴赢,王维和,齐瑾,刘辉,张文建,边巴次仁.用卫星资料分析中国区域CO柱总量时空分布特征[J].应用气象学报,2010,21(4):473-483.
作者姓名:白文广  张鹏  张兴赢  王维和  齐瑾  刘辉  张文建  边巴次仁
作者单位:1.中国气象科学研究院,北京 100081
基金项目:国家自然科学基金资助项目,"十一五"国家科技支撑计划重点项目,大气边界层物理和大气化学国家重点实验室基金项目,北京城市气象基金项目 
摘    要:该文利用国际先进在轨星载探测仪器SCIMACHY/ENVISAT和MOPITT/TERRA的一氧化碳(CO)柱总量观测资料,比较两个载荷的观测结果发现,二者在陆地区域的观测数据一致性较好,且与我国本底站近地面观测结果有比较一致的时间变化态势,表明CO柱总量卫星观测值可以很好地反映其在我国大气中的时空分布特性。利用MOPITT长时间的观测数据(2000年3月—2009年2月)对中国区域CO柱总量时空分布特性进行了分析,研究结果显示:我国东部地区CO柱总量显著高于西部地区,两个地区的CO柱总量年平均值9年内均呈上升态势,西部地区平均年增长率是千分之一的量级,东部地区年增长率约为1.0%。中国区域CO柱总量分布随季节变化显著,春季CO柱总量平均值最高,但是CO柱总量最小值,在东部地区出现在夏季,而西部地区出现在秋季。

关 键 词:SCIMACHY    MOPITT    CO柱总量时空分布
收稿时间:2009-11-04
修稿时间:3/6/2010 12:00:00 AM

Temporal and Spatial Distribution Characteristics of Carbon Monoxide Column Amount over China Based on Satellite Data
Bai Wenguang,Zhang Peng,Zhang Xingying,Wang Weihe,Qi Jin,Liu Hui,Zhang Wenjian and Bianba Ciren.Temporal and Spatial Distribution Characteristics of Carbon Monoxide Column Amount over China Based on Satellite Data[J].Quarterly Journal of Applied Meteorology,2010,21(4):473-483.
Authors:Bai Wenguang  Zhang Peng  Zhang Xingying  Wang Weihe  Qi Jin  Liu Hui  Zhang Wenjian and Bianba Ciren
Affiliation:1.Chinese Academy of Meteorological Sciences, Beijing 1000812.National Satellite Meteorological Center, Beijing 1000813.State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 1000294.Institute of Tibestan Plateau Atmosphere and Enviroment Research, Lhasa 850000
Abstract:Carbon monoxide is an important tropospheric species inasmuch as it influences the atmospheric chemistry through its reaction with the OH radical. It's also one of the main pollutants produced by incomplete combustion processes. Coupled with few weeks lifetime, it can be used as a tracer of atmospheric transport. Surface CO measurements which have generally been limited to boundary layer measurements often affected by local pollution cannot provide a global view of CO temporal and spatial distribution. Better understand these characteristics relies on a combination of ground based, aircraft, and space based measurements. CO long term changes and trends over a large area can only be obtained through space based remote sensing observations. Such measurements have been carried out by the SCanning Imaging Absorption SpectroMeter for Atmospheric CHartographY (SCIAMACHY) instrument on ENVISAT satellite and the Measurement of Pollution in the Troposphere instrument on TERRA (MOPITT). These measurements have been used effectively on monitoring CO plumes from forest fires, intercontinental transport of pollutions, frontal lifting and convective transport of pollution to the upper troposphere, and for inverse modeling to quantify surface source of CO. MOPITT measurements are useful in providing a global picture of the distribution of CO, but studies on their near surface application is limited. Since the sensors of CO on MOPITT are near the 4.7 μm absorption spectra, they are sensitive to CO mostly in the middle and upper troposphere but generally less sensitive in the lower troposphere comparing with the CO measurements in the solar channel at 2.3 μm by SCIMACHY. An introduction is given on CO remote sensing retrieval methods used by SCIAMACHY/ENVISAT and MOPITT/TERRA. Distribution properties and trend of CO from MOPITT of 2003 to 2005 are compared to SCIMACHY retrieval results. The two products show good agreement on the land; also they give roughly the same spatial and temporal distribution characteristics of CO. Comparisons between MOPITT product and ground measurement data of CO over Longfengshan, Lin'an and Waliguan during 2007—2008 show roughly the same temporal change in posture. Distribution characteristics and trend of CO from March 2000 to February 2004 over China is analyzed using MOPITT retrieval CO column amount product. On the average, CO in the east of China is higher than west. There is significant seasonal variation for CO with a peak in spring time. CO concentration in summer time is lowest in the east, but it reaches the minimum in autumn in the west of China. Trends analysis suggests that CO average column amount have increased during these nine years. The increasing trend for CO in the west region of China is at magnitude of a few thousandths, but in the east the increasing trend is about 1%.
Keywords:SCIMACHY  MOPITT
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