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首页> 外文期刊>Pure and Applied Geophysics >Observed Changes in Daily Precipitation Extremes at Annual Timescale Over the Eastern Mediterranean During 1961-2012
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Observed Changes in Daily Precipitation Extremes at Annual Timescale Over the Eastern Mediterranean During 1961-2012

机译：在1961 - 2012年期间观察到在东部地中海的每日降水极值的变化

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摘要

The Eastern Mediterranean is one of the most prominent hot spots of climate change in the world and extreme climatic phenomena in this region such as drought or extreme rainfall events are expected to become more frequent and intense. In this study climate extreme indices recommended by the joint World Meteorological Organization Expert Team on Climate Change Detection and Indices are calculated for daily precipitation data in 70 weather stations during 1961-2012. Observed trends and changes in daily precipitation extremes over the EM basin were analysed using the RClimDex package, which was developed by the Climate Research Branch of the Meteorological Service of Canada. Extreme and heavy precipitation events showed globally a statistically significant decrease in the Eastern Mediterranean and, in the southern parts, a significant decrease in total precipitation. The overall analysis of extreme precipitation indices reveals that decreasing trends are generally more frequent than increasing trends. We found statistically significant decreasing trends (reaching 74% of stations for extremely wet days) and increasing trends (reaching 36% of stations for number of very heavy precipitation days). Finally, most of the extreme precipitation indices have a statistically significant positive correlation with annual precipitation, particularly the number of heavy and very heavy precipitation days.
机译：地中海东部地中海是世界上最着名的气候变化热点之一，这一地区的极端气候现象，如干旱或极端降雨事件，预计会变得更加频繁和激烈。在这项研究中，在1961 - 2012年70个气象站的日常降水数据中计算了联合世界气象组织专家组的气候极端指数。使用RCLIMDEX封装分析了EM盆地上的每日降水量的趋势和变化，由加拿大气象服务的气候研究分支开发。极端和沉重的降水事件在全球范围内表现出东部地中海的统计显着下降，并且在南部部门，总降水的显着降低。极端降水指数的总体分析显示，趋势的降低往往比增加趋势更频繁。我们发现统计上显着的降低趋势（达到极其潮湿的日子的74％）和增加趋势（达到非常重的降水天数的36％）。最后，大多数极端降水指数与年降水有统计学显着的正相关，特别是重度和非常重的降水天数。

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