Climatic characteristics of Shuangtai estuary wetland

Shuangtai estuary wetland is located in the mid-latitude zone and belongs to the continental semi-humid and semi-arid monsoon climate of warm temperate zone. In spring, the temperature rises quickly, the precipitation is less and the air is dry; Summer climate is hot and humid, and precipitation is concentrated; Autumn is crisp and sunny; Winter is cold and dry, with little precipitation. The annual average temperature is 8.4℃, the annual average precipitation is 623.2mm, and the annual average evaporation is1568.6 mm. Affected by the Bohai Sea, the wind speed and direction have little change, and the annual average wind speed is 4.3m/s, and the dominant wind direction is southwest wind. The frost-free period is 172 days, and the standard frozen layer depth is 1. 10m. It belongs to temperate semi-humid monsoon climate, with an average annual precipitation of 650mm and an average annual temperature of 8.5℃.