文献类型：期刊文献

中文题名：广东省年蒸发量的时空演变特征

英文题名：Spatial-temporal Variations of Annual Evaporation in Guangdong Province

作者：范伶俐[1,2];郭品文[1];张福颖[1];吴德平[3];缪集群[4]

机构：[1]南京信息工程大学大气科学学院,江苏南京210044;[2]广东海洋大学海洋与气象学院,广东湛江524008;[3]湛江市气象局,广东湛江524001;[4]清远市气象局,广东清远511518

年份：2010

卷号：33

期号：3

起止页码：321

中文期刊名：大气科学学报

外文期刊名：Transactions of Atmospheric Sciences

收录：CSTPCD、、北大核心2008、CSCD_E2011_2012、北大核心、CSCD

基金：广东海洋大学自然科学基金资助项目(0812070)

语种：中文

中文关键词：广东省;蒸发皿蒸发量;实际蒸发量;时空演变

外文关键词：Guangdong; pan evaporation; actual evaporation; spatial and temporal variations

中文摘要：利用广东省86个气象站点1961—2003年的地面气象观测数据,采用经验正交函数分解(EOF)和相关分析法,分析了广东省年蒸发皿蒸发量和实际蒸发量的时空变化。结果表明,粤东沿海、珠三角和粤西南等沿海地区是广东省年蒸发皿蒸发量的主要气候变异中心,广东省沿海年蒸发皿蒸发量具有以年代际变化为主的特征,并且在43 a内总体上呈下降趋势,广东省沿海地区与粤东、粤中地区年蒸发皿蒸发量气候变化趋势的差异,可能是由于饱和差、近地面风速在两个区域的气候变化变幅不同所致。在影响蒸发皿蒸发量的因子中,太阳辐射与蒸发皿蒸发量的相关性最好,呈显著的正相关。对实际蒸发量而言,在全省范围内均表现为以年际变化为主的特征,太阳辐射对广东省年实际蒸发量的影响最为显著,广东省年实际蒸发量一般都占蒸发皿蒸发量的50%左右,并且比值总体上呈现微弱的由沿海地区向粤东、粤中地区递增的趋势。研究结果可为今后探讨广东省水资源异常和旱涝气候灾害的成因提供依据。

外文摘要：Based on the observation data at 86 stations in Guangdong Province,EOF analysis and correlation analysis were applied to study the spatial and temporal variations of the annual pan evaporation and actual evaporation during a 43-year period from 1961 to 2003.The results show that anomalous centers of the annual pan evaporation are located over the Pearl River delta,south-west part of Guangdong and the eastern coastal region of Guangdong.The annual pan evaporation over coastal region of Guangdong experiences an interdecadal variation（mainly a downtrend） in the 43 years.The difference in annual pan evaporation between coastal areas and the other parts of Guangdong may be due to their different amplitudes of saturation deficit and wind speed in the same phase of climate change trend.The solar radiation is most significantly correlated with the pan evaporation among all affecting factors.The actual evaporation illustrates an interannual variation over the whole province.Among all the affecting factors,the solar radiation is the most remarkable one.The actual evaporation usually accounts for 50 percents of the pan evaporation,and the overall rate presents a slightly increasing trend from the coastal region to the central and eastern part of Guangdong.The results can be used to study the causes of water resources anomalies,droughts and floods in Guangdong province.