摘要
利用“绿洲系统能量与水分循环过程观测与数值研究”的观测资料和酒泉站的地面和探空气象资料,计算了酒泉绿洲夏季大气边界层的加热(冷却)率,分析了酒泉绿洲近地面层和行星边界层的大气加热(冷却)率逐日变化,研究了不同典型天气下大气加热(冷却)率的变化特征。结果表明,酒泉绿洲近地面层和行星边界层内,大气加热(冷却)率具有明显的逐日变化特征;近地面层和行星边界层及整个大气层白天的大气加热率和夜晚的大气冷却率基本相当,大气能量基本守恒;日照时数、云量和特殊天气过程(如冷空气活动、沙尘天气和降水等)对大气加热(冷却)率有很大影响。
Using the data of the study of observation experiment and numerical simulation on energy and moisture cycle of oasis system item and the information of Jiuquan observation station, heating and cooling rates of PBL in Jiuquan oasis are calculated, the daily variations in SL and PBL and the characteristics during some typical days are analyzed. It is found that the heating （cooling） rate in SL and PBL has an obvious changes; but the heating rates were equivalent to the cooling rates in SL and PBL, therefore, the atmospheric energy is conservative~ moreover, sunshine duration, cloud cover and some special weather systems have important influences on the rates.
出处
《高原气象》
CSCD
北大核心
2005年第4期540-544,共5页
Plateau Meteorology
基金
国家自然科学基金重点项目(40233035)资助
