globalchange  > 气候变化与战略
CSCD记录号: CSCD:5726340
论文题名:
近50年来山东省极端降水指数变化特征分析
其他题名: Characteristics of Change in Extreme Precipitation Indices in Shandong Province in Recent 50 Years
作者: 李胜利1; 巩在武1; 石振彬2
刊名: 水土保持研究
ISSN: 1005-3409
出版年: 2016
卷: 23, 期:4, 页码:257-265
语种: 中文
中文关键词: 气候变化 ; 极端降水指数 ; 山东省
英文关键词: climate change ; extreme precipitation ; Shandong Province
WOS学科分类: GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向: Geology
中文摘要: 利用山东省117个气象站1961-2013年逐日降水观测数据,根据选取的9个极端降水指数,分析了区域内各极端降水指数的时间变化趋势和空间分布规律,并探讨了各极端降水指数与总降水量之间的关系。结果表明:长时段(1961-2013年)中一日最大降水量(RX_(1d))、最大连续五日降水量(RX_(5d))、降水强度(SDⅡ)、最长连续无雨日数(CDD)增大趋势不明显,其他各指数均有减小趋势,短时段(1991-2013年)除RX_(1d),CDD呈减小趋势,其他各指数均有增大趋势。不同地区两时段各极端降水指数变化趋势并不相同,短时段变幅更大同时变化显著的站点更多。除CDD和总降水量有近三分之一的站点为不显著的负相关外,其他指数和总降水量多为显著正相关。
英文摘要: Based on daily precipitation data recorded in 117 meteorological stations in Shandong Province during the period from 1961 to 2013,the temporal variability and spatial distributions of extreme precipitations were studied by using nine extreme precipitation indices.At the same time,the possible connections between extreme precipitation indices and annual total precipitation were analyzed.The main conclusions are as the followings.In the past 53 years(long period),an decreasing trend was observed in terms of the indices such as annual total precipitation extremes(R_(95)P_(TOT)),annual count of days with RR≥10mm(R_(10)),RR≥20mm (R_(20)),and RR≥50mm(R_(50)),maximum number of consecutive wet days(CWD),while an non-significantly enhanced trend was observed in terms of the indices such as the maximum 1-day precipitation amount(RX_(1d)), the maximum 5-day precipitation amount(RX_(5d)),maximum number of consecutive dry days(CDD)and the simply daily intensity index(SDⅡ).In the past 23 years(short period),an increasing trend was observed in terms of the indices except RX_(1d),CDD.Each extreme precipitation index trend between long period and short period was not same in different regions.Amplitude in short period was greater and stations with significantly trend were more than long period.The correlation coefficients between most extreme precipitation indices and annual total precipitation were positive or even significant positive except one third of stations between CDD and annual total precipitation which had no significant negative correlations.
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/151550
Appears in Collections:气候变化与战略

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作者单位: 1.南京信息工程大学公共管理学院, 南京, 江苏 210044, 中国
2.山东省气象局, 济南, 山东 250031, 中国

Recommended Citation:
李胜利,巩在武,石振彬. 近50年来山东省极端降水指数变化特征分析[J]. 水土保持研究,2016-01-01,23(4):257-265
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