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首页> 外文期刊>Advances in Meteorology >Spatiotemporal Variability and Trends of Extreme Precipitation in the Huaihe River Basin, a Climatic Transitional Zone in East China
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Spatiotemporal Variability and Trends of Extreme Precipitation in the Huaihe River Basin, a Climatic Transitional Zone in East China

机译：华东淮河流域极端降水的时空变化及趋势，中国华东气候过渡区

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摘要

Precipitation data from 30 stations in the Huaihe River basin (HRB), a climatic transitional zone in east China, were used to investigate the spatiotemporal variability and trends of extreme precipitation on multitimescales for the period 1961-2010. Results indicated that (1) the spatial pattern of the annual precipitation, rainy days, extreme precipitation, andmaximumdaily precipitations shows a clear transitional change from the south (high) to the north (low) in the HR; it confirmed the conclusion that the HRB is located in the transitional zone of the 800mmprecipitation contour inChina,where the 800mmprecipitation contour is considered as the geographical boundary of the south and the north. (2) Higher value of the extreme precipitation intensity mainly occurs in the middle of the east and the central part of the basin; it reveals a relatively distinct west-east spatial disparity, and this is not in line with the spatial pattern of the extreme precipitation total, the sum of the precipitation in 95th precipitation days. (3) Annual precipitation of 22 stations exhibits increasing trend, and these 22 stations are located from the central to the northern part. There is no significant trend detected for the seasonal precipitation. The summer precipitation exhibits a larger change range; this might cause the variation of the flood and drought in the HBR. However, the increasing trend in winter precipitation may be beneficial to the relief of winter agricultural drought. Rainy days in 12 stations, mostly located in and around the central northeastern part, experienced significant decreasing trend. Extreme precipitation days and precipitation intensity have increasing trends, but no stationwith significant change trend is detected for the maximumprecipitation of the basin. (4)The spatiotemporal variability in the HRB is mainly caused by the geographic differences and is largely influenced by the interdecadal variations of East Asian Summer Monsoon in eastern China.Theo
机译：淮河流域（HRB）30站的降水数据，是华东气候过渡区，探讨了1961 - 2010年期间多尺寸的时空变化和极端降水的趋势。结果表明，（1）年降水量，下雨天，极端降水，和最低沉淀的空间模式表明，人力资源中南（高）对南北（低）的清晰过渡变化;它确认了HRB位于800mmpripitation Contour inchina的过渡带，其中800mmpripitation轮廓被认为是南北和北方的地理边界。 （2）极端降水强度的值较高，主要发生在东部的中部和盆地的中央部分;它揭示了一个相对不同的西部空间差异，这并不符合极端沉淀总量的空间模式，第95天降水的总和。 （3）22站的年降水表现出越来越大的趋势，这22个电台从北部到北部到核心。对于季节降水没有检测到显着的趋势。夏季降水表现出更大的变化范围;这可能导致HBR中洪水和干旱的变化。然而，冬季降水的趋势越来越大，可能有利于冬季农业干旱的缓解。在12个站点的雨天，大多位于东北部中的中部和周围地区，经历了显着降低的趋势。极端降水日和降水强度具有越来越大的趋势，但没有对盆地的最高申请进行了重大改变趋势。 （4）HRB中的时空变异主要是由地理差异引起的，并且主要受到中国东部夏季季风的跨界变化的影响。

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