The latitudinal dependence in the trend of snow event to precipitation event ratio.
The latitudinal dependence in the trend of snow event to precipitation event ratio.
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DOI：
10.1038/s41598-021-97451-9
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发表时间：
2021-09-13
影响因子：
4.6
通讯作者：
Liu G
中科院分区：
文献类型：
--
作者：
Shi S;Liu G
随着气温的升高，降水相态将由固态向液态转变，这将给区域水资源管理带来挑战。虽然近几十年来，在气候变暖的情况下，多个区域的降雪量与降水率之比一直呈下降趋势，但尚未建立降水分配趋势的全球观点。在这项研究中，我们使用1978年至2019年的陆地站和船上天气预报，调查了全球年雨雪发生频率的趋势以及降雪事件数量与降水事件数量的比值（SE/PE比值）。结果表明，当平均所有合格的陆地站和船上的报告，无论是年降雨频率和降雪频率减少了42年。在陆地和海洋上，平均SE/PE比有显着的下降趋势。此外，SE/PE比值的趋势显示出很强的纬度依赖性。在北方半球中低纬地区，SE/PE比值有减小的趋势。相反，在高纬度地区，SE/PE比值有增加的趋势。
Precipitation phase is expected to shift from solid to liquid with temperature rising, which would in turn bring challenges to regional water resource management. Although in recent decades, consistent decreasing trends in the ratio of snowfall to precipitation rate in a warming climate have been found across multiple regions, a global view of the trends in the precipitation partitioning has not been established. In this study, we investigated the global trends of annual rain and snow frequency of occurrences and the ratio of number of snow events to number of precipitation events (SE/PE ratio) using land station and shipboard synoptic present weather reports from 1978 to 2019. Results show that when averaged over all qualified land stations and over the shipboard reports, both the annual rain frequency and snow frequency decrease over the 42 years. Over both land and ocean, the averaged SE/PE ratio has a significant decreasing trend. Moreover, the trend of SE/PE ratio shows a strong latitudinal dependence. At the mid- and low latitudes in the Northern Hemisphere, the SE/PE ratio has a decreasing trend. In contrast, at high latitudes, the SE/PE ratio has an increasing trend.
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影响因子：
4.9
作者：
Behrangi, Ali;Stephens, Graeme;Lebsock, Matthew
通讯作者：
Lebsock, Matthew
影响因子：
6.3
作者：
Lynn, Elissa;Cuthbertson, Aaron;Hatchett, Benjamin J.
通讯作者：
Hatchett, Benjamin J.
影响因子：
3.8
作者：
McCabe, GJ;Clark, MP
通讯作者：
Clark, MP
DOI：
10.1002/joc.2137
发表时间：
2011-06-30
期刊：
INTERNATIONAL JOURNAL OF CLIMATOLOGY
影响因子：
--
作者：
Abatzoglou, John T.
通讯作者：
Abatzoglou, John T.
影响因子：
3.8
作者：
Das, T.;Hidalgo, H. G.;Mirin, A.
通讯作者：
Mirin, A.