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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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夏半年青藏高原“湿池”的水汽分布及水汽输送特征
DOI: 10.11821/xb200905009, PP. 601-608
Keywords: 高原湿池,可降水量,水汽输送通道,青藏高
Abstract:
采用1948-2007年共计60年的NCEP/NCAR再分析资料，计算了夏半年(4-9月)青藏高原大气中的可降水量、水汽输送通量和水汽输送通量散度，分析了夏半年青藏高原可降水量的分布和变化特征，青藏高原及其附近的水汽输送。结果表明在对流层中层的青藏高原上空，夏季是一个明显的大气水汽含量高中心，“湿池”特征非常显著，湿池主要有三个大的可降水量中心，即高原的西南部、东南部和高原南侧。4-9月，高原上的可降水量变化很大，高原的增湿的速度小于减湿的速度。水汽进入高原主要通过三条水汽通道，即西风带水汽输送通道、印度洋—孟加拉湾水汽通道和南海—孟加拉湾水汽通道。水汽主要在高原西南侧、喜马拉雅山中段和高原东南侧进入高原。
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