Analysis on land-sea breeze feature in coastal area of Haizhou Bay in Lianyungang

Using the daily 24-h wind datasets,which are derived from 3 gradient anemometer towers and 19 automatic meteorological stations,we investigated the land-sea breeze in the coastwise area of Haizhou Bay and proposed the concept of net value of land-sea breeze.Combined with the net value analysis of land-sea breeze circulation in the coast,it was demonstrated that the land-sea breeze in the south and north coasts exhibited significant differences: the land-sea breeze in the north-south coast was weaker than that in the northwest-southeast coast,and it had a later conversion time.The horizontal extension of sea-breeze towards land area was about 45 km.In summer,the vertical extension height could reach 625 m or above.