气候变暖背景下宁夏暴雨日数的变化

气候变暖背景下宁夏暴雨日数的变化

By using the summer torrential rain days data in Ningxia,the Yinchuan sounding data and the NCEP/NCAR reaualyzed data,the evolutional characteristics and the cause of torrential rain days in Ningxia were analyzed under the background of climate warming.The results show that both annual torrential rain days and annual mean temperature displayed consistent increasing trends.Further analysis results indicate that atmospheric potential instability has grown in the daytime in both July and August and in the nighttime in July,but weakened in the nighttime in August after the climate warming of Ningxia.Therefore,the climate warming not only caused more distinctive diurnal variation of the vertical distribution of atmospheric temperatures in Yinchuan,but also resulted in the increase of torrential rain days and in more obvious diurnal variation of the torrential rain in Ningxia.

作 者： 陈晓光 郑广芬 陈晓娟 Zhang Zhi Chen Xiaoguang Zheng Guangfen Chen Xiaojuan Zhang Zhi   作者单位： 陈晓光,Chen Xiaoguang(Ningxia Key Laboratory of Meteorological Disaster Preventing and Reducing,Yinchuan 750002,China)

郑广芬,Zheng Guangfen(Ningxia Key Laboratory of Meteorological Disaster Preventing and Reducing,Yinchuan 750002,China;Ningxia Meteorological Observatory,Yinchuan 750002,China)

陈晓娟,Zhang Zhi,Chen Xiaojuan,Zhang Zhi(Ningxia Meteorological Observatory,Yinchuan 750002,China) 

刊 名： 气候变化研究进展  ISTIC 英文刊名： ADVANCES IN CLIMATE CHANGE RESEARCH  年，卷(期)： 2008 4(z1)  分类号： P4  关键词： climate change   torrential rain days   atmospheric circulation   formation mechanism   Ningxia  

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