In situ water vapor and ozone measurements in Lhasa and Kunming during the Asian summer monsoon
In situ water vapor and ozone measurements in Lhasa and Kunming during the Asian summer monsoon
复制标题
亚洲夏季风期间拉萨和昆明的水汽和臭氧原位测量
DOI：
10.1029/2012gl052996
复制
发表时间：
2012-10-12
影响因子：
5.2
通讯作者：
Lu, Daren
中科院分区：
文献类型：
--
作者：
Bian, Jianchun;Pan, Laura L.;Lu, Daren
亚洲夏季风反气旋环流系统是水汽和污染物进入平流层的重要输送通道。然而，观测证据主要基于卫星检索。我们报告的第一个符合在ASM反气旋内的水汽和臭氧的原位测量。水蒸气和臭氧联合探测仪分别于2009年8月和2010年8月在中国昆明和拉萨发射。在昆明和拉萨分别发射了11个和12个探空仪。我们提出了这些测量的主要特点，并提供了一个类似的测量从赤道热带位置，在热带成分，云和气候耦合（TC4）运动在2007年7月和8月的比较。结果表明，ASM反气旋区对流层上部和平流层下部的水汽浓度比TC 4观测值高，臭氧浓度比TC 4观测值低。结果还表明，ASM区的冷点对流层顶具有较高的平均高度和位温。因此，现场观测支持基于卫星的结论，即ASM是水汽进入平流层的有效传输途径。
The Asian summer monsoon (ASM) anticyclone circulation system is recognized to be a significant transport pathway for water vapor and pollutants to enter the stratosphere. The observational evidence, however, is largely based on satellite retrievals. We report the first coincident in situ measurements of water vapor and ozone within the ASM anticyclone. The combined water vapor and ozonesondes were launched from Kunming, China in August 2009 and Lhasa, China in August 2010. In total, 11 and 12 sondes were launched in Kunming and Lhasa, respectively. We present the key characteristics of these measurements, and provide a comparison to similar measurements from an equatorial tropical location, during the Tropical Composition, Cloud and Climate Coupling (TC4) campaign in July and August of 2007. Results show that the ASM anticyclone region has higher water vapor and lower ozone concentrations in the upper troposphere and lower stratosphere than the TC4 observations. The results also show that the cold point tropopause in the ASM region has a higher average height and potential temperature. The in situ observations therefore support the satellite‐based conclusion that the ASM is an effective transport pathway for water vapor to enter stratosphere.