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黄土高原地表能量不闭合度与垂直感热平流的关系
引用本文:张强,李宏宇.黄土高原地表能量不闭合度与垂直感热平流的关系[J].物理学报,2010,59(8):5888-5895.
作者姓名:张强  李宏宇
作者单位:(1)中国气象局兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室,中国气象局干旱气候变化与减灾重点开放实验室,兰州 730020; 甘肃省气象局,兰州 730020; 兰州大学 大气科学学院,兰州 730000; (2)中国气象局兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室,中国气象局干旱气候变化与减灾重点开放实验室,兰州 730020; 兰州大学 大气科学学院,兰州 730000
基金项目:国家自然科学基金重点项目(批准号: 40830957)资助的课题.
摘    要:地表能量不平衡问题一直是陆面过程研究的一个重要科学难题.本文利用在陇中黄土高原观测的陆面过程资料,分析了气候地表能量不闭合度和短期地表能量不闭合度的分布特征,研究了地表能量不闭合度与垂直速度之间的关系,发现地表能量不闭合与垂直速度具有很好的相关性.并且,估算了近地层垂直感热平流通量,分析了考虑垂直感热平流后的地表能量平衡的特征,发现引入垂直感热平流输送对地表能量不闭合度有明显的改进. 关键词: 黄土高原 非均匀性 垂直感热平流 能量不闭合度

关 键 词:黄土高原  非均匀性  垂直感热平流  能量不闭合度
收稿时间:2009-09-30

The relationship between surface energy balance unclosure and vertical sensible heat advection over the loess plateau
Zhang Qiang,Li Hong-Yu.The relationship between surface energy balance unclosure and vertical sensible heat advection over the loess plateau[J].Acta Physica Sinica,2010,59(8):5888-5895.
Authors:Zhang Qiang  Li Hong-Yu
Institution:Institute of Arid Meteorology,CMA;Key laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province; Key Open Laboratory of Arid Climatic Change and Disaster Reduction of CMA, Lanzhou 730020, China; Gansu Provincial Meteorological Bureau, Lan;Institute of Arid Meteorology,CMA;Key laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province; Key Open Laboratory of Arid Climatic Change and Disaster Reduction of CMA, Lanzhou 730020, China
Abstract:The surface energy imbalance problem has been an important challenge in the study of surface land process since it was found in the late 1980s. By utilizing the observed data in the land surface process experiment carried out over the Loess Plateau region in the middle part of Gansu, the characteristics of climate unclosure and short-term unclosure of the surface energy balance are analyzed and the relationship between surface energy balance unclosure and vertical velocity is studied in the paper. It is found that there is a good correlation between surface energy balance unclosure and vertical velocity. Furthermore, the paper estimates the values of vertical sensible heat advection in the surface layer. After considering the vertical sensible heat advection, characteristics of the surface energy balance condition are analyzed again and there is a significant improvement in the surface energy balance unclosure.This means vertical velocity plays an important role in the surface energy buget and the vertical sensible heat advection has a significant influence on the surface energy balance unclosure over the Loess Plateau region.
Keywords:loess plateau  heterogeneity  vertical  vertical sensible heat advection  energy balance unclosure
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