武汉城市区域水陆风环流的形成与转化特征研究

大气细颗粒物PM_2.5污染引起的雾霾天气既与本地污染物排放密切有关，也受局地特殊的风场影响.本文以武汉城市区域为研究对象，分别研究了长江沿岸的江陆风环流、东湖沿岸湖陆风环流的形成与转化特征，发现江风、湖风开始时间均为07：00-08：00，一年中最大风速均能达到2 m/s左右，而春夏季江风的持续时间高于秋冬季，夏季湖风的持续时间高于春季.同时发现区域附近温度和相对湿度之间有明显的相关性，湿度变化趋势大体上跟温度变化趋势相反，且温度对相对湿度的影响存在一定的滞后性，延迟时间大约为1 h.

Study on formation and transformation characteristics of water-land wind in Wuhan city

Smog caused by atmospheric fine particulate matter (PM_2.5) pollution is closely related to local pollutant discharge and is also affected by local wind fields.This study used the urban area of Wuhan as the research object and examined the formation of river-land wind along the Yangtze River and the formation and transformation of lake-land wind along the East Lake.It was found that when the start time of the river wind and lake wind was 07:00-08:00,the maximum wind speed could reach 2 m/s.Additionally,the spring and summer river winds lasted longer than the autumn and winter seasons.The summer lake winds lasted longer than the spring.At the same time,it was found that there was a significant correlation between temperature and relative humidity near the area.The trend of humidity was generally opposite to that of temperature change,and the effect of temperature on relative humidity exhibited hysteresis with a delay time of about 1 h.