丽水市大气环境中的城市干、湿岛效应初探

Discussion on Urban Dry Island and Urban Moisture Island Effects of Lishui Atmospheric Environment

利用丽水城区中心及其近郊2个站点的逐时水汽压资料,定义了干(湿)岛强度指数及干(湿)岛强度等级,并发现了丽水小城区干(湿)岛变化强度、频次及时空分布规律,研究发现城区中心的干岛现象与热岛现象之间存在着正相关。湿岛的形成与露、雾、结冰、霜、雨等天气现象有关。

Using vapor air pressure datum every hour of two monitoring spots （Lishui urban center and Lishui suburb）, the paper defined intensity index of Dry （Moisture） Island and intensity grade of Dry （Moisture） Island, and discovered change intensity, frequency and spatio- temporal distributing law of Dry （Moisture） Island. Results shown Dry Island phenomenon and Thermal Island of urban center were positive correlation, and dew, brume, icing, hoarfrost and rain etc. weather phenomenon influenced Moisture Island.