用卫星资料分析中国区域CO柱总量时空分布特征  

Temporal and Spatial Distribution Characteristics of Carbon Monoxide Column Amount over China Based on Satellite Data

作　　者：白文广[1] 张鹏[2] 张兴赢[2,3] 王维和[2] 齐瑾[2] 刘辉[2] 张文建[2] 边巴次仁[4] 

机构地区：[1]中国气象科学研究院,北京100081 [2]国家卫星气象中心,北京100081 [3]中国科学院大气物理研究所大气边界层物理和大气化学国家重点实验室,北京100029 [4]西藏高原大气环境科学研究所,拉萨850000

出　　处：《应用气象学报》2010年第4期473-483,共11页Journal of Applied Meteorological Science

基　　金：国家自然科学基金资助项目(40905056);"十一五"国家科技支撑计划重点项目(2008BAC34B04-2);大气边界层物理和大气化学国家重点实验室基金项目(LAPC-KF-2008-11);北京城市气象基金项目(UMRF200704)共同资助

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。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 4.7μm 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 2.3μm 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 betwe

关 键 词：SCIMACHY MOPITT CO柱总量时空分布 

分 类 号：P412.1[天文地球—大气科学及气象学]