[1]LUO Han,ZHAO Ting-ning,ZHAO Zhi-feng,et al.Study on the Distribution Regularity of the Solar Radiation Based on ViewGIS 3.0 in Hilly and Gully Regions on the Loess Plateau[J].Research of Soil and Water Conservation,2009,16(03):206-211.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
16
Number of periods:
2009 03
Page number:
206-211
Column:
Public date:
2009-06-20
- Title:
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Study on the Distribution Regularity of the Solar Radiation Based on ViewGIS 3.0 in Hilly and Gully Regions on the Loess Plateau
- Author(s):
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LUO Han, ZHAO Ting-ning, ZHAO Zhi-feng, ZHOU Bin
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Key Laboratory of Soil and Water Conservation and Desertification Combating of Ministry of Education, College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
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- Keywords:
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solar radiation; ViewGIS 3.0; distribution regularity
- CLC:
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S161.1
- DOI:
-
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- Abstract:
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The research on spatial-temporal distribution regularies of solar direct radiation in Huaguoshan Yukou were conducted, which were based on the solar radiation model of ViewGIS. The purpose of this paper is to provide primal data and scientific evidence for region plan and environment construction. The main conclusions: (1) On the whole solar radiation trend is that during one day errors vary dramatically at the time of sunrise and sunset but at noon errors vary smooth. Cloudy, the errors of contrast of solar direct radiation conversion values and simulating values vary dramatically which showed that error increases with cloudage. So the model doesn’t go well in few-cloudy and cloudy days. (2) During one day, the value of solar radiation is low in morning and evening but high at noon. What’s more, solar direct radiation variation is of high speed in the process of warming up in the morning and cooling down in the afternoon, while at noon solar direct radiation varies smooth. (3)During a year, solar radiation variation regularity is single peak curve and the max of solar radiation appears respectively in July which is the center of the curve. (4) In 24 solar terms, the max and min of solar radiation appear respectively in the Summer Solstice and the Winter Solstice which follow the regularity of normal distribution with the center of the Summer Solstic. (5) In different slope, along with the gradient increasing, the solar direct radiation is gradually reduced. Between the different orientations, in south slope the total solar direct radiation is the greatest, southeast and southwest less, north least.