违反了 PRIMARY KEY 约束 'PK_t_counter'。不能在对象 'dbo.t_counter' 中插入重复键。 语句已终止。 暖季极端降水与温度的关系研究-以安徽省为例-The Precipitation Extremes Scaling with the Temperature in the Warming Hiatus Period—a Case Study of Anhui Province
doi:  10.3878/j.issn.1006-9585.2017.17009
暖季极端降水与温度的关系研究-以安徽省为例

The Precipitation Extremes Scaling with the Temperature in the Warming Hiatus Period—a Case Study of Anhui Province
摘要点击 174  全文点击 63  投稿时间:2017-01-11  最后修改时间:2017-04-25
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基金:  国家自然科学基金,国家基础研究重大项目基金
中文关键词:  极端降水  温度  Clausius-Clapeyron关系  气候变化
英文关键词:  precipitation extremes  temperature  Clausius-Clapeyron  Climate change
           
作者中文名作者英文名单位
黄丹青Dan-Qing Huang南京大学大气科学学院
严佩文Pei-Wen Yan
刘高平Gao-Ping Liu
朱坚Jian Zhu
引用:黄丹青,严佩文,刘高平,朱坚.2017.暖季极端降水与温度的关系研究-以安徽省为例[J].气候与环境研究
Citation:Dan-Qing Huang,Pei-Wen Yan,Gao-Ping Liu,Jian Zhu.2017.The Precipitation Extremes Scaling with the Temperature in the Warming Hiatus Period—a Case Study of Anhui Province[J].Climatic and Environmental Research(in Chinese)
中文摘要:
      围绕增暖减缓期(1998-2014年)安徽省极端降水事件,展开了不同时间尺度暖季极端降水与温度的关系研究。结果表明,从年际尺度上看,极端降水量和极端降水频数与气温和温度日较差的相关关系呈现南负北正的反向特征,尤以北部的正相关最显著。定量结果表明,安徽省暖季极端降水频数和平均极端降水量对升温的变化百分率分别为13.7%/oC和0.03%/oC。从日(小时)尺度上看,气温低于25oC时,随着气温的升高极端降水量增加,且基本遵循一倍(二倍)的Clausius-Clapeyron关系。但在气温高于25oC时,随着温度升高日和小时极端降水量出现不同程度的下降,尤以前者减少的最显著。进一步比较不同小时尺度极端降水与气温关系发现,随着时间尺度的增长,气温增长后极端降水下降的关系变得尤为明显。这可能与单日内极端降水在偏高温时以短时降水为主有关。
Abstract:
      In this study, the relation between precipitation extremes (PEs) and temperature in Anhui Province at different time scales in warming hiatus period (1998-2014) has been investigated. At the interannual scale, the relationship between the magnitude of PEs and temperature indicate a south-north dipole pattern, with a positive (negative) correlation over northern (southern) Anhui. Similar results are detected in the relation between the frequency of PEs and temperature. The quantitative results show that the frequency (magnitude) of PEs over Anhui is decreased (enhanced) 13.7%/oC (0.03%/oC) with the temperature changes. This suggests that the frequency of PE is more sensitive response to the temperature changes. At the daily and hourly scale, the PEs increase with temperature rise. The daily PEs show the one-time Clausius-Clapeyron (CC) relation, while the hourly PEs show the two-times CC relation. Another remarkable feature is that, daily as well as hourly PEs, present a decrease after the peak point around 25℃, and the decrease of PEs appears to be much more intense, particularly for the hourly PE. Further comparing the relation between PEs and temperature at different hour scales, with the growth of time scale, this decrease becomes more significant. This may be related with that the PEs in one day may be dominated by short duration PEs at higher temperature.
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