广东汕头沿海海陆风的特征

Analysis of Sea-Land Breezes Characteristics in the Coastal Region of Shantou,Guangdong

选取广东省汕头市沿海的自动气象站2016年的测风资料进行统计,得到汕头沿海地区海陆风的特征,并计算16方位的污染系数。结果表明:汕头市2016年共出现海陆风日64 d。海风持续时间在4. 8～9. 5 h,主要从13:00开始出现;陆风持续时间在5. 5～8. 6 h,主要从01:00开始出现。海风的年平均风速为2. 8 m/s,最大风速主要出现在16:00;陆风的年平均风速为2. 4 m/s,最大风速主要出现在02:00。总体来看,全年偏西风的污染系数最小。

Using the wind measurements of automatic weather stations at the coastal region of Shantou in Guangdong province for 2016, the characteristics of sea-land breezes and pollution coefficients were stud-ied. Major conclusions are as follows : There were 64 sea-land breeze days in 2016. The sea breeze lasted be-tween 4.8 and 9.5h and mainly began at 13:00. The land breeze lasted between 5. 5 and 8. 6h and mainly began at 1:00 .The average wind speed of the sea breeze was 2.8 m/ s, and the maximum wind speed main-ly occurred at 16:00. The average annual wind speed of the land breeze was 2.4 m/ s and the maximum wind speed occurred mainly at 02:00. Overall, the pollution coefficient of westerly wind was the smallest.