Spatial-temporal Variation Characteristics of Sunshine Duration in China and Its Influence Factors

• Published in: Meteorological and environmental research Vol. 11; no. 6; pp. 1 - 8
• Main Authors: Xiao, Fengjin, Zhang, Xuguang, Liao, Yaoming, Liu, Qiufeng
• Format: Journal Article
• Language: English
• Published: Cranston Wu Chu (USA-China) Science and Culture Media Corporation 01.12.2020
• Subjects: Agricultural production; Animal growth; Climate and human activity; Climate change; Correlation analysis; Crop yield; Duration; Energy resources; Energy sources; Human influences; Mutation; Precipitation; Solar energy; Solar energy resources; Sorghum; Spatial variations; Sunflowers; Sunlight; Sunshine duration; Temporal variations; Time series; Tobacco; Trend analysis; Weather stations; China; Inner Mongolia China; Tibet
• ISSN: 2152-3940
• DOI: 10.19547/j.issn2152-3940.2020.06.001

In order to study the temporal and spatial variation of sunshine duration in China under the background of climate change, based on the observation data of 2 089 national meteorological stations during 1961 - 2017 , trend analysis, mutation analysis, partial correlation analysis, and Mann-Kendall mutation analysis were used to analyze the temporal and spatial variation characteristics of sunshine duration in different regions of China, and the influence of main climatic factors and human activities. Sunshine duration not only affects the growth and finial yield of wheat, corn, millet, sorghum, flue-cured tobacco, sunflower and other crops, but also has a great impact on animal growth and development, human health and solar energy resources[12-14]. [...]the change of sunshine duration has an important impact on people's production and life, especially on agricultural production. [...]precipitation has different conclusions in various researches, and some of them show positive correlation, while others show negative correlation. Because most of the previous studies are focused on a certain region in China, the study on the national sunshine situation is less, and the overall distribution and change trend of sunshine duration are not clear. Seen from different decades, average sunshine duration was 2 221 h in the 1960s, 2 203 h in the 1970s, 2 116 h in the 1980s, and 2 080 h in the 1990s. Since 2000, average sunshine duration was 2 034 h. National average sunshine duration was 2 322 h in 1963, which was the highest, while the minimum (1 846 h) appeared at 2015 (Fig. la).