大气边界层热量输送的非局地多尺度湍流理论及试验研究  

THEORY ON NON-LOCAL MULTI-SCALE TURBULENCE FOR BOUNDARY-LAYER HEAT TRANSPORT WITH ITS EXPERIMENT

作　　者：朱蓉[1] 徐大海[1] 

机构地区：[1]中国气象科学研究院,北京100081

出　　处：《应用气象学报》2005年第3期273-282,共10页Journal of Applied Meteorological Science

基　　金：国家973"我国重大天气灾害形成机理和预测理论研究"(9730602)资助。

摘　　要：该文在大气边界层多尺度湍流理论和湍流穿越理论的基础上,建立了大气边界层感热通量的非局地多尺度湍流计算方法,并选用1998年5～8月份第二次青藏高原大气科学试验(TIPEX)的大气边界层综合观测基地昌都站观测资料,分别用感热通量的非局地多尺度湍流计算方法和经典相似理论计算感热通量。对计算结果的对比分析表明,用感热通量的非局地多尺度湍流计算方法能计算出感热通量的逆梯度输送,也能计算出青藏高原近中性层结条件下明显的感热通量。此外,多尺度湍流理论还有待进一步发展完善,提高感热通量的计算精度。Following theories on multi-scale turbulence and transilient turbulence in the atmospheric boundary layer, a method is developed for non-local multi-scale turbulence for sensible heat flux and using data from Changdu station as the base for all-item observations in the second Tibetan Plateau Experiment (TIPEX) from May to August, 1998, sensible fluxes are calculated by means of a technique for non-local multi-scale turbulence and a classic similarity scheme separately. Analysis of the calculations shows that the first method is responsible for the upgradient transport of sensible heat and for the higher fluxes in the near-neutral stratification over the Plateau. Besides, the multi-scale theory needs further improvement in an effort to raise the precision of the calculations.

关 键 词：大气边界层 湍流理论 多尺度 试验研究 热量输送 感热通量 计算方法 青藏高原 1998年 观测资料 综合观测 科学试验 理论计算 计算结果 计算精度 8月份 分析表 近中性 层结 

分 类 号：P404[天文地球—大气科学及气象学] TP391.41[自动化与计算机技术—计算机应用技术]