Increase in Lower Stratospheric Water Vapor in the Past 100 Years Related to Tropical Atlantic Warming

Increase in Lower Stratospheric Water Vapor in the Past 100 Years Related to Tropical Atlantic Warming
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过去 100 年与热带大西洋变暖相关的低平流层水蒸气增加

DOI:
10.1029/2020gl090539
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发表时间:
2020-11
影响因子:
5.2
通讯作者:
Lu Jinping
Lu Jinping
中科院分区:
地球科学1区
文献类型:
--
作者:
Xie Fei;Tian Wenshou;Zhou Xin;Zhang Jiankai;Xia Yan;Lu Jinping

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平流层低层水汽(SWV)是全球气候变化的重要驱动力之一。低SWV的增加和减少分别加强和抵消了全球变暖效应。利用多个数据集,我们发现过去100年的海表温度(SST)变暖导致了SWV的增加。热带印度洋和西太平洋的海温变暖导致平流层更加干燥。然而,热带大西洋变暖导致平流层明显变湿,是过去100年SWV增加趋势的主要原因。印度洋和西太平洋上空的罗斯比和开尔文波对大西洋变暖的反应导致对流层顶温度升高,导致更多的水蒸气进入平流层。这项研究表明,SWV趋势可能仅仅是暖池海温和热带大西洋海温变化之间博弈的结果。
Lower Stratospheric water vapor (SWV) is one of important drivers of global climate change. Increases and decreases in lower SWV have been found to strengthen and offset global warming effects, respectively. Using several data sets, we find that sea surface temperature (SST) warming in the past 100 years has caused an increase in SWV. SST warming over the tropical Indian Ocean and the western Pacific has resulted in a drier stratosphere. However, tropical Atlantic Ocean warming has resulted in a significantly wetter stratosphere and is the main contributor to the increasing trend of SWV in the past 100 years. The responses of Rossby and Kelvin waves over the Indian Ocean and western Pacific to Atlantic warming have led to a warmer tropopause temperature, resulting in more water vapor entering the stratosphere. This study suggests that SWV trend may simply be the result of a game between warm pool SST and tropical Atlantic SST changes.
DOI: 10.1126/science.1182488
发表时间: 2010-03-05
期刊: SCIENCE
影响因子: 56.9
作者:
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