MAPPING SOLAR RADIATION AT DIFFERENT TIMESCALES USING BOTH SUNSHINE DURATION AND DIURNAL TEMPERATURE RANGE IN CHINA

Category: ICETI 2017
Author: Sidong Zeng, Hong Du, Hui Wan, Jinfeng Huang
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Previous studies investigating on the spatiotemporal variation of solar radiation are mainly focus on the annual changes, while higher time resolution spatiotemporal distributions are limited, which will be more important for different biogeochemical and hydrological processes with different timescales. In this paper, the spatiotemporal distribution of solar radiation at annual and seasonal timescales are mapped in China based on three widely used models including the Ångström-Prescott, Hargreaves-Samani and Bristow-Campbell models. Results show that the annual solar radiation decreases significantly in the Eastern monsoon zone and the Northwestern arid zone. The seasonal solar radiation decreases in most of the season in the Northwestern arid zone and the decrease trends are significantly in spring and autumn in the Eastern monsoon zone, while the changing trends are not significant in most of the seasons in the Tibetan Plateau frigid zone. Moreover, “From diming to brightening” occurs in winter, annual and particularly in spring radiation changes, while in summer solar radiation shows a continuous decrease trend and a slight decrease trend is detected in autumn solar radiation.

Pages 63-67
Year 2017
Issue 2
Volume 1

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