关键词: 大气边界层, 结构特征, 锦州生态站

Abstract: In order to explore the atmospheric boundary layer structure of Jinzhou ecological station,one day in October2016,February2017,April and July respectively is to be selected.Using NCAR/NCEP data,the characteristics of500 hPa pressure field and850 hPa pressure field weather situation are analyzed;WRF model is used to simulate the surface wind field at8:00 and20:00,the vertical profile wind field,and the48h boundary layer height;Microwave radiometer is used to detect the temperature and humidity of Jinzhou ecological station from the ground to an altitude of10 km.The results show that,the position of Jinzhou is near the trough,the air flow is to the west or north,and the cold air passes through the trough and the temperature drops at the500 hPa pressure field.The position between low pressure system and high pressure system at850 hPa pressure field,the airflow comes from the north or south.The ground wind field is in high pressure divergent air flow,wind direction to west or north.The profile wind fields are all downdraft near the ground.Atmospheric instability occurs at20 o'clock at different altitudes from the ground.There is little change in temperature at a height of10 000 meters from the ground.The height of inversion layer is lowest in February and highest in October.The variation of humidity from the ground to the upper air shows a fluctuating shape.The change is obvious in one day.Among them,there is relatively small change in the humidity within one day of February,the change from ground to upper air is relatively small.The boundary layer height is low between19:00 on the first day and8:00 on the second day.The high values appear between12:00 and15:00.The difference of boundary layer height and low value is small,of which February is the smallest.The difference of the height of the boundary layer is large,with the smallest in February and the largest in July.

Key words: atmospheric boundary layer, structural characteristics, Jinzhou Ecological Station