Seasonal distributions of hydrometeor parameters in the offshore sea of Jiangsu
江苏近岸海域水文气象要素的时空分布特征

Based on the seasonal hydrometeor parameters measured in the offshore sea along Jiangsu coasts from 2006 to 2007, we analyzed the distributions of the sea surface air temperature, relative humidity, wind speeds, significant wave height, water temperature and salinity. We found that the spatial distributions of these parameters varied remarkable among different seasons. The fine weather was mostly observed in autumn, and the rainy or snowy in winter. The sea fog usually occurred in spring. The air temperature is higher in autumn than in spring. The winter air temperature was higher than the historical data. The relative humidity reached the peak value in summer due to the high evaporation. The wind was very strong over the offshore sea of Jiangsu and mainly controlled by the monsoon. In addition, a significant correlation was present between the wind speed and significant wave height. The strong waves were observed in the Rudong offshore area. We also found that there was a negative exponential relationship between the seawater transparency and watercolor. In addition, the seawater temperature contours were consistent with the air temperature patterns in spring and autumn, and were parallel along the isobath in winter. Furthermore, the low salinity occurred in the Sheyang River mouth and Changjiang River mouth due to river discharges in the flood season, but high in the outer margin of radial sand ridges.