ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 39 Issue 4 > 2013,39(4):443-452. DOI:10.7519/j.issn.1000-0526.2013.04.006 Prev Next
Analysis on Spatial Temporal Variation of Solar Energy Resource in Urumqi City in Recent 50 Years
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Abstract:
Based on the daily sunshine hours data of 9 meteorological stations and daily solar radiation data of Urumqi Meteorological Station from 1961 to 2010 in Urumqi, Xinjiang, the monthly solar radiation of spring, summer, autumn, winter and year from 1961 to 2010 of each meteorological station was estimated by using of climatic methods, and the fundamental spatial temporal change trends of spring, summer, autumn, winter and annual sunshine hours and solar radiation were analyzed by using of linear trend, Mann Kendall test and three dimensional and quadratic trend surface simulation and inverse distance squared weighting residual error revision based on GIS. The main results show that spring, summer, autumn and annual sunshine hours and solar radiation in Urumqi are more in plain and valley areas than in Tianshan Mountain areas, but winter sunshine hours and solar radiation are more in Tianshan Mountain areas than in plain and valley areas. The variation trends of spring, summer sunshine hours and solar radiation are not so obvious, but sunshine hours and solar radiation of autumn, winter and year have significantly decreased in recent 50 years, and they had abrupt decrease in 1981 and 1991 respectively. And before and after the sudden change, the autumn, winter and annual sunshine hours and solar radiation had distinct regional differences. In general, the decrease range of sunshine hours and solar radiation shows the characteristics of “more in plain, but less in mountain areas”.
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