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The influences of air heat storage, plant photosynthesis and soil water movement on surface energy balance over the loess plateau | |
Li Hong-Yu1,2,3; Zhang Qiang1,2,3; Wang Chun-Ling4; Yang Fu-Lin1,2,3; Zhao Jian-Hua1,2,3 | |
通讯作者 | Li Hong-Yu |
来源期刊 | ACTA PHYSICA SINICA |
ISSN | 1000-3290 |
出版年 | 2012 |
卷号 | 61期号:15 |
英文摘要 | The surface energy imbalance problem has become a challenge in the study of surface land process since it was found in the late 1980s. By using data provided by the program "the Loess Plateau Land-surface Process Experiment (LOPEX)" and introducing the vertical sensible heat flux into the surface energy balance equation, in the paper, we estimate the heat storage associated with change of air temperature and humidity as well as the energy stored in plants due to the photosynthesis, determine the water vertical flux in the shadow soil layer both by water conservation principle and two-level soil temperature, and investigate the influences of air and plant photosynthesis energy storages and heat transferred by the soil water movement on the surface energy budget. It is found that the diurnal variation peaks of averaged energy storages of air and plant photosynthesis reach 1.5 and 2.0 W.m(-2) respectively. Additionally, the diurnal variation peak of mean heat transferred by vertical water movement is close to 8.0 W.m(-2). The closure of energy balance is improved from 88.1% to 89.6% by adding the three additional energy terms to the energy balance equation. As a whole, the energy storage related to air and the plant photosynthesis, and the heat transferred by the soil water movement both promote the surface energy balance to some extent. Furthermore, the semi-arid climate and the vegetation condition of Loess Plateau essentially lead to significant differences of energy storage be tween this area and other climatic districts. |
英文关键词 | loess plateau surface energy balance air heat storage plant photosynthesis |
类型 | Article |
语种 | 中文 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000309089100077 |
WOS关键词 | FLUX ; CLOSURE ; CLIMATE ; TERMS |
WOS类目 | Physics, Multidisciplinary |
WOS研究方向 | Physics |
来源机构 | 南京信息工程大学 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/170943 |
作者单位 | 1.CMA, Inst Arid Meteorol, Lanzhou 730020, Peoples R China; 2.Key Lab Arid Climat Change & Reducing Disaster Ga, Lanzhou 730020, Peoples R China; 3.CMA, Key Open Lab Arid Climat Change & Disaster Reduct, Lanzhou 730020, Peoples R China; 4.Nanjing Univ Informat Sci & Technol, Coll Appl Meteorol, Nanjing 210044, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Li Hong-Yu,Zhang Qiang,Wang Chun-Ling,et al. The influences of air heat storage, plant photosynthesis and soil water movement on surface energy balance over the loess plateau[J]. 南京信息工程大学,2012,61(15). |
APA | Li Hong-Yu,Zhang Qiang,Wang Chun-Ling,Yang Fu-Lin,&Zhao Jian-Hua.(2012).The influences of air heat storage, plant photosynthesis and soil water movement on surface energy balance over the loess plateau.ACTA PHYSICA SINICA,61(15). |
MLA | Li Hong-Yu,et al."The influences of air heat storage, plant photosynthesis and soil water movement on surface energy balance over the loess plateau".ACTA PHYSICA SINICA 61.15(2012). |
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