LI Tong,FAN Guangzhou,LAI Xin,et al.Comparative Analysis of Atmospheric CompositionDistribution of UT/LS on the Tibetan Plateau[J].Journal of Chengdu University of Information Technology,2020,35(06):637-643.[doi:10.16836/j.cnki.jcuit.2020.06.010]
青藏高原UT/LS的大气成分分布对比分析
- Title:
- Comparative Analysis of Atmospheric Composition Distribution of UT/LS on the Tibetan Plateau
- Keywords:
- meteorology; climate change; Qinghai-Tibet Plateau; upper troposphere-lower stratosphere; atmospheric composition
- 分类号:
- P462.6
- 文献标志码:
- A
- 摘要:
- 为更好地了解高原上空大气成分的分布,利用NCEP/NCAR再分析资料、美国NOAA提供的外逸长波辐射资料和美国Aura卫星携带的MLS微波临边探测仪测得的最新资料对青藏高原上空及其周边区域上对流层至下平流层的水汽及一氧化碳和臭氧的分布特征进行对比分析。结果表明,高原上空水汽的含量在上对流层-下平流层明显大于其东西两侧,水汽的极大值出现在7、8月。水汽分布总体呈现南多北少,但不同季节有一些差别。一氧化碳分布的大值中心随高度的升高而西移,南亚高压动力作用随之增强,深对流作用减弱。在高原西南侧低层低浓度的臭氧向上输送,东北侧高层高浓度的臭氧向下输送,使臭氧呈现东北侧高,西南侧低的分布特征。三者在不同高度上存在不同的相关性,且均通过显著性检验。
- Abstract:
- In order to better understand the distribution of atmospheric components over the plateau,the latest data measured by the NCEP/NCAR reanalysis data,the exogenous longwave radiation data provided by the US NOAA,and the MLS microwave edge detector carried by the Aura satellite in the United States were used to compare and analyze the.The distribution characteristics of water vapor,carbon monoxide and ozone from the troposphere to the lower stratosphere.were compared and analyzed.The results show that the water vapor content over the plateau is significantly larger in the upper troposphere-lower stratosphere than that in the east and west sides, and the maximum value of water vapor appears in July and August.The overall distribution of water vapor has shown greater in the south than in the north.is more south than north, but there are some differences in different seasons. The large value center of the carbon monoxide distribution moves westward with the increase of the height,and the dynamic effect of the high pressure in South Asia increases,and the deep convection weakens.On the southwest side of the plateau,low-concentration ozone is transported upwards,and on the northeast side,high-concentration ozone is transported downwards,which makes the distribution characteristics of ozone demonstrate high in the northeast and low in the southwest. which makes the ozone distribution characteristics of high northeast and low southwest.The three have had different correlations at different heights,and all passed the significance test.
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备注/Memo
收稿日期:2019-12-03 基金项目:国家自然科学基金资助项目(91537214); 国家重点研发计划资助项目(2018YFC1505702); 公益性(气象)行业科研专项资助项目(GYHY201506001)