Diverging hydrological sensitivity among tropical basins
Diverging hydrological sensitivity among tropical basins
复制标题
热带盆地之间水文敏感性的差异
DOI：
10.1038/s41558-024-01982-8
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发表时间：
2024
影响因子：
30.7
通讯作者：
Fueglistaler, Stephan A.
中科院分区：
文献类型：
--
作者：
He, Jie;Lu, Kezhou;Fosu, Boniface;Fueglistaler, Stephan A.
这三个热带盆地在全球气候系统中各有独特的作用。热带海洋影响遥远气候的主要机制是局部降水的潜热作用。在这里，我们报告了热带盆地之间水文敏感性（每单位地表变暖的降水变化）的主要差异。具体而言，太平洋的水文敏感性是印度盆地的数倍，而大西洋的水文敏感性为负。这是由于现有空间相对湿度不均匀的热力学放大，最湿的盆地变得更湿，最干的盆地变得更干。流域水文敏感性的发散伴随着潜热通量和对流质量通量在流域间的重新分配，对热带和中纬度地区的降雨和地表温度具有深远的影响。这些结果表明，以前未被认识到的流域间水文敏感性差异可能在很大程度上影响了人为气候变化的地理格局。
The three tropical basins each have unique roles in the global climate system. The main mechanism by which tropical oceans affect remote climate is the latent heating of local precipitation. Here we report major differences in hydrological sensitivity (precipitation change per unit surface warming) among tropical basins. Specifically, the Pacific hydrological sensitivity is several times as large as that of the Indian basin, while the Atlantic hydrological sensitivity is negative. This results from a thermodynamic amplification of the existing spatial unevenness in relative humidity, with the wettest basin getting wetter and the driest basin getting drier. The diverging basin hydrological sensitivity is accompanied by an interbasin repartitioning of latent heating and convective mass fluxes, with far-reaching implications on rainfall and surface temperature over tropical and mid-latitude lands. These results indicate that the previously unrecognized interbasin differences in hydrological sensitivity may contribute substantially to the geographic pattern of anthropogenic climate change.
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影响因子：
5.2
作者：
Lisan Yu;S. Josey;F. Bingham;Tong Lee
通讯作者：
Lisan Yu;S. Josey;F. Bingham;Tong Lee
影响因子：
5.1
作者：
Eyring, Veronika;Bony, Sandrine;Taylor, Karl E.
通讯作者：
Taylor, Karl E.
影响因子：
3.1
作者：
Kobayashi, Shinya;Ota, Yukinari;Takahashi, Kiyotoshi
通讯作者：
Takahashi, Kiyotoshi
影响因子：
6.7
作者：
Allan, Richard P.;Soden, Brian J.;Good, Peter
通讯作者：
Good, Peter