【作者】 林晶； 马治国； 陈家金； 李丽纯； 杨凯；

【Author】 Lin Jing, Ma Zhiguo, Chen Jiajin, Li Lichun, Yang Kai (Institute of Meteorology in Fujian Province, Fuzhou 350001)

【机构】 福建省气象科学研究所；

【摘要】 笔者利用1971—2004年福建省66个气象站各月平均气温、降水量、风速、气压和相对湿度资料,对福建省近34年湿润指数的时空分布特征与变化趋势进行了分析,并对造成湿润指数变化的主要气候影响因子进行了探讨。结果表明:过去34年间,福建省湿润指数总体上略有增加,其中在1991—2000年期间最高为2.73,而在2001—2004年期间最低为2.22;福建省湿润指数在空间分布上表现为由东南部沿海向西北部地区逐渐湿润的空间变化趋势;福建省湿润指数变化主要受降水量和潜在蒸散量的影响,日照时数和相对湿度通过对潜在蒸散量的影响,进而都与湿润指数显著相关。通过对福建省地表湿润状况的演变规律及其区域特征的研究,为科学预测福建省未来地表湿润状况提供重要的科学依据。更多还原

【Abstract】 Based on 66 meteorological stations’data of monthly average temperature, precipitation, wind speed, pressure and relative humidity in Fujian Province from 1971 to 2004, it analyzed the temporal and spatial distribution of humid index and their causes of variation. The results showed that in the past 34 years, the humid index in Fujian Province was highest (2.73) in the period of 1991 to 2000 and the lowest (2.22) in the period of 1981 to 1990, which with a slight increase as a whole. The spatial distribution trend of humid index value was increasing from southeast to northwest. The change of the humid index was mainly influenced by precipitation and potential evapotranspiration. Sunshine duration and relative humidity which had great influence on potential evapotranspiration were all correlated with the humid index significantly. This study provided important scientific basis for the future of surface humid status in Fujian Province by researching on the evolvement law of surface humid status and the regional characteristics.更多还原