[1]ZHANG Xiu-mei,HE Zhi-ming,LI Yue-chen,et al.Analysis of Spatial Variability of Possible Sunshine Duration on Rugged Terrain—A Case Study in Chongqing City[J].Research of Soil and Water Conservation,2013,20(05):287-290.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
20
Number of periods:
2013 05
Page number:
287-290
Column:
Public date:
2013-10-28
- Title:
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Analysis of Spatial Variability of Possible Sunshine Duration on Rugged Terrain—A Case Study in Chongqing City
- Author(s):
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ZHANG Xiu-mei1, HE Zhi-ming1,2,3, LI Yue-chen1,2, LI Jun1,2
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1. College of Geography and Tourism, Chongqing Normal University, Chongqing 400047, China;
2. Key Laboratory of GIS Application, Chongqing Municipal Education Commission, Chongqing 400047, China;
3. Chongqing Geomatics Center, Chongqing 400020, China
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- Keywords:
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rugged terrain; possible sunshine duration; digital elevation model; Solar Analyst; Chongqing City
- CLC:
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P422.1+1;P463.21
- DOI:
-
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- Abstract:
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Based on DEM data with 100 m resolution, average monthly possible sunshine duration is simulated using Solar Analyst model in Chongqing City. Then seasonal and annual possible sunshine durations are obtained by calculating spatial data. Results showed that possible sunshine duration is higher in summer and lower in winter. Therefore, it is the highest in June and the lowest in January. And we can see that the effect of terrain on possible sunshine duration is obvious in winter, the solar altitude angle is low at that time. Combined with topographic factors such as slope, aspect derived from DEM, spatial distribution characteristics of possible sunshine duration are analyzed. Result suggests that possible sunshine duration in the same slope increases with solar altitude angle, while possible sunshine duration in the same aspect increases with the slope decreases. The higher effect of aspect on possible sunshine duration is in the higher slope.