摘要
利用1980-2010年黔东南地区16个地面气象站逐月实测资料,采用灰色关联度方法分析了蒸发皿蒸发量对各气象要素的影响程度,通过经验正交函数分解方法(EOF)提取了第一特征向量场的时间系数并进行了Mann-Kendall突变检验和线性倾向估计分析,以及利用非线性回归方法建立数理模型确定气温变化对蒸发皿蒸发量的影响等。结果表明,黔东南地区的蒸发皿蒸发量与气温、湿度、降水量等因子有关系,并与气温的关系最为密切;同时,该地区气温出现了明显的升温趋势,即20世纪90年代中期是该地区年气温突变的关键时期,其气温倾向率为0.25℃.(10a)-1,通过了α=0.05显著性水平检验;在气温升高1℃的情况下,蒸发皿蒸发量增加了5.93%～8.04%,并自东向西逐渐递减,与海拔呈反相关关系。
Using the monthly observation data at 16surface weather stations in Southeast Guizhou from 1961to 2010,the impact of evaporation from evaporating dishes on meteorological elements by means of the gray correlation method was analyzed and the Empirical Orthogonal Function Decomposition Method（EOF） was used to extract the time coefficient of the first eigenvector field.The Mann-Kendall method was used for abrupt change test and linear trend estimation,and non-linear regression method to establish mathematical models in which several quantity relationships between single of elements and the evaporation were determined.For example,the impact of temperature change on evaporation,etc.The results show that there are some correlations between the evaporation from the dishes and temperature factors,humidity factor,the energy factor,wind speed and other factors in the Southeast Guizhou region.Meanwhile,there is a obvious warming trend in the Southeast Guizhou region,and the critical period of temperature occurring abrupt change is in the middle 1990s,the and its temperature tendency rate reaches to 0.25 ℃.（10 a）-1,which had passed the significanct level atα=0.05.The evaporation from the dishes increases about 5.93%～8.04% while the temperatures increases 1 ℃,and gradually decreased from east to west.The evaporation from the dishes is negative correlation with sea level elevation.
出处
《高原气象》
CSCD
北大核心
2012年第6期1761-1766,共6页
Plateau Meteorology
基金
贵州省科学技术基金项目(20092043)
贵州省气象科技开放研究基金项目(黔气科合KF[2011]05号)共同资助
关键词
气温变化
黔东南
蒸发皿蒸发量
Temperature change
Southeast Guizhou
Evaporation from the evaporating dishes
