RUAN Jin-shuai,FAN Guang-zhou,ZHANG Yong-li,et al.The Contrastive Analysis of the Heat Balance of the HRADC,GLDAS and JRA Datasets[J].Journal of Chengdu University of Information Technology,2017,(04):453-463.[doi:10.16836/j.cnki.jcuit.2017.04.017]
HRADC、GLDAS和JRA资料热量平衡分量的对比分析
- Title:
- The Contrastive Analysis of the Heat Balance of the HRADC,GLDAS and JRA Datasets
- 文章编号:
- 2096-1618(2017)04-0453-11
- 关键词:
- 大气科学; 陆气相互作用; 东北半干旱区; HRADC、GLDAS、JRA; 热量平衡分量; Bowen-ratio
- Keywords:
- atmospheric science; land atmospheric interaction; the semi-arid Northeast China; HRADC; GLDAS; JRA; the component of heat balance; Bowen-ratio
- 分类号:
- P461
- 文献标志码:
- A
- 摘要:
- 为对HRADC、GLDAS和JRA资料在东北半干旱区热量平衡各分量的特征和差异进行对比研究,采用2005～2012年的资料比较和分析了夏季(7月)辐射平衡分量、能量平衡分量、Bowen-ratio、地表温度等物理量的空间分布特征和彼此之间的相关关系。结果表明:GLDAS、HRADC及JRA的净长波辐射和净短波辐射空间分布均为西高东低; 整体上而言,HRADC辐射平衡分量均为最大,JRA次之,GLDAS为最小; 净辐射的变化和净短波辐射密切相关。感热通量表现西高东低的分布型,地表热通量表现南低北高的分布型; HRADC潜热通量、GLDAS感热通量以及JRA地表热通量在3种资料横向对比中均为最大值,潜热通量为各资料能量平衡分量的最大值; HRADC与GLDAS的感热通量与地气温差具有显著的相关关系,JRA相对偏小,Bowen-ratio和地表温度等水平分布的差异主要与下垫面土地利用类型和地理位置有关。
- Abstract:
- In order to compare and analyze the characteristics and differences of the heat balance components in the semi-arid northeast China, based on the 2005-2012 data from HRADC, GLDAS and JRA datasets, we analyze the spatial distribution characteristics of physical balance, such as radiation balance component, energy balance component,bowen-ratio, surface temperature and so on in summer(July). The results show that net long-wave radiation and net short-wave radiation of GLDAS, HRADC and JRAare all high in east and low in west. Generally speaking, the radiation balance component of HRADC are the largest, followed by JRA, and GLDAS is the smallest. The changes of net radiation are closely related to net shortwave radiation. Moreover, the sensible heat are high in west and low in east, and surface heat flux are high in north and low in south. The latent heat flux of HRADC, sensible heat flux of GLDAS and JRA surface heat flux were the highest in horizontal comparison of the three datasets, and the latent heat flux is the maximum value of the energy balance component of each data. There is a significant correlation between sensible heat flux and ground temperature difference of HRADC and GLDAS, while the JRA is relatively small. The difference between the horizontal distribution of bowen-ratio and surface temperature is mainly related to the land use type and geographical location of the underlying surface.
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备注/Memo
收稿日期:2017-03-30 基金项目:国家自然科学基金资助项目(91537214); 公益性行业(气象)科研专项资助项目(GYH201506001)