摘要
利用惠州市4个观测站逐日的降水资料,统计分析了1967—2009年惠州市强降水和洪涝气候变化特征,并分析了省运会期间强降水出现概率。结果表明:(1)惠州市属于强降水较多区,但时空分布不均匀,强降水90%以上出现在汛期,北部山区多于中部和沿海地区。(2)惠州市年强降水日的年际变化较大且除北部山区外其余地区都呈增加趋势,全市平均年强降水日近10年与前33年相比增加了1.4 d。(3)惠州市洪涝出现频繁,43年来全市累计出现156次,前汛期北部山区为多发区,后汛期沿海地区为多发区。(4)全球变暖背景下惠州市强降水日和洪涝都呈增多趋势,这与全球、全国和广东省的变化趋势一致。(5)省运会期间正值惠州市主汛期,强降水天气出现频繁,每天都有出现的可能。
Using the daily rainfall data from 4 stations in the period from 1967 to 2009 in Huizhou city,the variable characteristics of heavy precipitation and climatic floods were statistically analyzed.The results show that（1） Huizhou city has much heavy precipitation,but the spacial-temporal distribution of heavy precipitation is uneven,and above 90% of heavy precipitation appear in the flood season.There are more heavy precipitation in the northern mountain area than that in the central region and coastal areas.（2） Annual heavy precipitation days except the northern mountain area tend to rise.In the recent 10 years,the city＇s average heavy precipitation days increases by 1.4 d compared with that in the first 33 years.（3） The climatic floods appear 156 times in the past 43 years,the northern mountain area has more in the early flood season,but the coastal areas has more in the latter flood season.（4） As global warming the heavy precipitation days and climatic floods tend to increase in Huizhou city in the past 43 years,that is consistent with the variety trend of the whole country and Guangdong province.（5） During the 2010 Guangdong Games this is just the main flood season.The heavy precipitation may appear frequently and can happen every day.
出处
《暴雨灾害》
2010年第4期381-385,共5页
Torrential Rain and Disasters
基金
惠州市科学技术局项目(2006G35
2007G32)
关键词
强降水
洪涝
气候特征
省运会
惠州市
Heavy precipitation
Climatic floods
Variation characteristics
Guangdong Games
Huizhou city
