| Influences of Topographic Shadows on the Thermal and Hydrological Processes in a Cold Region Mountainous Watershed in Northwest China | |
| Zhang, YL (Zhang, Y. L.)1; Li, X (Li, X.)2,3; Cheng, GD (Cheng, G. D.)3,4,5; Jin, HJ (Jin, H. J.)4,6; Yang, DW (Yang, D. W.)7; Flerchinger, GN (Flerchinger, G. N.)8; Chang, XL (Chang, X. L.)1; Wang, X (Wang, X.)1; Liang, J (Liang, J.)1 | |
| Source Publication | JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
 |
| 2018-07-01 | |
| Volume | 10Issue:7Pages:1439-1457 |
| DOI | 10.1029/2017MS001264 |
| Abstract | The solar radiation incident in a mountainous area with a complex terrain has a strong spatial heterogeneity due to the variations in slope orientation (self-shading) and shadows cast by surrounding topography agents (topographic shading). Although slope self-shading has been well studied and considered in most land surface and hydrological models, topographic shading is usually ignored, and its influence on the thermal and hydrological processes in a cold mountainous area remains unclear. In this study, a topographic solar radiation algorithm with consideration for both slope self-shading and topographic shadows has been implemented and incorporated into a distributed hydrological model with physically based descriptions for the energy balance. A promising model performance was achieved according to a vigorous evaluation. In a control model without considering the topographic shadows, the simulated solar radiation incident in the study area was about 14.3W/m(2) higher on average, which in turn led to a higher simulated annual mean ground temperature at 4m (by 0.41 degrees C) and evapotranspiration (by 16.1mm/a), and a smaller permafrost extent (reduced by about 8%), as well as smaller maximal snow depth and shorter snow duration. Although the simulation was not significantly improved for discharge hydrograph in the base model, higher river runoff peaks and an increased runoff depth were obtained. In areas with a rugged terrain and deep valleys, the influences of topographic shadows would even be stronger in reality than the presented results, which cannot be ignored in the simulation of the thermal and hydrological processes, especially in a refined model. |
| WOS ID | WOS:000441886300004 |
| Language | 英语 |
| Indexed By | SCIE |
| Keyword | HEIHE RIVER-BASIN WIRELESS SENSOR NETWORK SOLAR-RADIATION MODEL QINGHAI-TIBET PLATEAU SKY-VIEW FACTOR LAND-SURFACE SIMULTANEOUS HEAT FROZEN SOIL REFERENCE EVAPOTRANSPIRATION COMPLEX TOPOGRAPHY |
| WOS Research Area | Meteorology & Atmospheric Sciences |
| WOS Subject | Meteorology & Atmospheric Sciences |
| Cooperation Status | 国际 |
| ISSN | 1942-2466 |
| Department | 大数据中心 |
| Publisher | AMER GEOPHYSICAL UNION |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itpcas.ac.cn/handle/131C11/8604 |
| Collection | 图书馆 |
| Affiliation | 1.Hunan Univ Sci & Technol, Natl Local Joint Engn Lab Geospatial Informat Tec, Xiangtan, Peoples R China; 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing, Peoples R China; 3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China; 4.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou, Gansu, Peoples R China; 5.[Cheng, G. D.] Shanghai Normal Univ, Inst Urban Study, Shanghai, Peoples R China; 6.Harbin Inst Technol, Sch Civil Engn, Harbin, Heilongjiang, Peoples R China; 7.Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing, Peoples R China; 8.USDA ARS, Northwest Watershed Res Ctr, Boise, ID 83712 USA. |
| Recommended Citation GB/T 7714 | Zhang, YL ,Li, X ,Cheng, GD ,et al. Influences of Topographic Shadows on the Thermal and Hydrological Processes in a Cold Region Mountainous Watershed in Northwest China[J]. JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS,2018,10(7):1439-1457. |
| APA | Zhang, YL .,Li, X .,Cheng, GD .,Jin, HJ .,Yang, DW .,...&Liang, J .(2018).Influences of Topographic Shadows on the Thermal and Hydrological Processes in a Cold Region Mountainous Watershed in Northwest China.JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS,10(7),1439-1457. |
| MLA | Zhang, YL ,et al."Influences of Topographic Shadows on the Thermal and Hydrological Processes in a Cold Region Mountainous Watershed in Northwest China".JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS 10.7(2018):1439-1457. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 2018144.pdf（3037KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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