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| 广东省年蒸发量的时空演变特征 | |
| 引用本文： | 范伶俐,郭品文,张福颖,吴德平,缪集群.广东省年蒸发量的时空演变特征[J].南京气象学院学报,2010,33(3):321-327. |
| 作者姓名： | 范伶俐 郭品文 张福颖 吴德平 缪集群 |
| 作者单位： | 1. 南京信息工程大学,大气科学学院,江苏,南京,210044;广东海洋大学,海洋与气象学院,广东,湛江,524008 2. 南京信息工程大学,大气科学学院,江苏,南京,210044 3. 湛江市气象局,广东,湛江,524001 4. 清远市气象局,广东,清远,511518 |
| 基金项目： | 广东海洋大学自然科学基金资助项目 |
| 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。 |
| 关 键 词： | 广东省 蒸发皿蒸发量 实际蒸发量 时空演变 |
Spatial-temporal Variations of Annual Evaporation in Guangdong Province |
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| FAN Ling-li,GUO Pin-wen,ZHANG Fu-ying,WU De-ping,MIAO Ji-qun.Spatial-temporal Variations of Annual Evaporation in Guangdong Province[J].Journal of Nanjing Institute of Meteorology,2010,33(3):321-327. | |
| Authors: | FAN Ling-li GUO Pin-wen ZHANG Fu-ying WU De-ping MIAO Ji-qun |
| Institution: | 1.School of Atmospheric Sciences,NUIST,Nanjing 210044,China; 2.College of Oceanography and Meteorology,Guangdong Ocean University,Zhanjiang 524088,China; 3.Zhanjiang Meteorological Office,Zhanjiang 524001,China; 4.Qingyuan Meteorological Office,Qingyuan 515518,China) |
| Abstract: | 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. |
| Keywords: | Guangdong pan evaporation actual evaporation spatial and temporal variations |
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