中文摘要：

利用2015年7月至2016年5月寿县稻麦轮作农田区观测站地基多通道微波辐射计观测的高时间分辨率温度廓线资料,结合位温梯度法,计算了该站点的大气边界层高度,分析了边界层高度的日、月和季节演变规律。结果显示,晴朗天气情况下,边界层高度具备典型的日变化特征,随着地面温度的升高边界层高度不断增大。其最大平均值通常出现在午后,8月平均高度最高,超过1520m,1月最低,只有520m。而且边界层高度具有季节变化趋势,春季（3—5月）、夏季（6—8月）、秋季（9—11月）和冬季（12月至次年2月）平均高度分别为436m,499m,377m和322m。将边界层高度结果与FNL和ERA-Interim数据进行对比,发现在白天时间段（08：00—19：00）FNL和ERA-Interim比观测平均值分别高258m,346m,夜间时间段（19：00至次日08：00）比观测平均值分别低144m,102m。

英文摘要：

By using the high temporal resolution temperature profile data observed from multi-channel microwave radiometer over the rice-wheat rotation cropping field observation site at Shouxian from July 2015 through May 2016, the atmospheric boundary layer heights are calculated with the potential temperature gradient method, and the diurnal, monthly, and seasonal variation characteristics of the atmospheric boundary layer heights are studied in this paper. It is found that the atmospheric boundary layer heights have a typical diurnal variation in fine weather, which is almost in the same phase of the diurnal temperature variation. During a day, the average largest height usually appears in afternoon, with the largest value in August （greater than 1520 meters） and smallest value in January （520 meters）. The atmospheric boundary layer heights also show a seasonal cycle： the smallest in winter （322 meters）, and the second smallest in autumn （377 meters）, the second largest in spring （436 meters）, and the largest in summer （499 meters）. The atmospheric boundary layer height calculated from the temperature observations is 258 meters （346 meters） greater than the value from the FNL （ERA-Interim） data during the daytime （i.e., 08：00-19：00 local time）, while it is 144 meters （102 meters） smaller than the value from the FNL （ERA-Interim data） during the nighttime （i. e., 19：00-8：00 local time）.