On the origin of continental precipitation
On the origin of continental precipitation
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DOI：
10.1029/2010gl043712
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发表时间：
2010-07-07
影响因子：
5.2
通讯作者：
Stohl, Andreas
中科院分区：
文献类型：
--
作者：
Gimeno, Luis;Drumond, Anita;Stohl, Andreas
每年从海洋中蒸发的10升水中约有9升水沉淀到海洋中。然而，剩下的10%被运送到大陆的水在水循环的陆地分支中发挥着不可替代的作用。本文采用客观三维拉格朗日模型（FLEXPART）来探测主要的海洋湿气源区和受每个湿气源显著影响的相关大陆区域。我们的研究结果揭示了海洋水分对大陆的高度不对称供应，北大西洋副热带海洋源对大陆的影响远远大于大型南印度和北太平洋源。此外，地中海和红海的小盆地是相对较大的陆地地区的重要湿气来源。印度次大陆从六个不同的主要海洋源区获得水分。未来海洋湿气源区气象条件的变化可能对许多流域的可用水量产生影响。引用本文：Gimeno， L.， A. Drumond， R. Nieto， R. M. Trigo和A. Stohl (2010), On the origin of continental precipitation, geoophys。卷。， 37, L13804, doi:10.1029/2010GL043712。
About 9 out of 10 liters of water evaporated from the oceans every year precipitates back onto oceans. However, the remaining 10% that get transported to continents play an irreplaceable role feeding the land branch of the hydrological cycle. Here we use an objective 3-D Lagrangian model (FLEXPART) to detect major oceanic moisture source areas and the associated continental regions significantly influenced by each moisture source. Our results reveal a highly asymmetrical supply of oceanic moisture to the continents, with the Northern Atlantic subtropical ocean source impacting the continents considerably more than the large Southern Indian and North Pacific sources. Also, the small Mediterranean Sea and Red Sea basins are important moisture sources for relatively large land areas. The Indian subcontinent receives moisture from six different major oceanic source regions. Future changes in meteorological conditions over the oceanic moisture source regions may have an impact on water availability for many river basins. Citation: Gimeno, L., A. Drumond, R. Nieto, R. M. Trigo, and A. Stohl ( 2010), On the origin of continental precipitation, Geophys. Res. Lett., 37, L13804, doi:10.1029/2010GL043712.