热带气象学报2024，Vol.40Issue(1)：146-155,10.DOI:10.16032/j.issn.1004-4965.2024.015
1960-2018年中国日照时数变化及其与大气环流的关系
Dynamic Changes in Sunshine Duration and its Relationship with Atmospheric Circulation in China During 1960-2018
摘要
Abstract
Daily sunshine duration data in 595 meteorological stations from 1960 to 2018 in China was used in this study.We selected three indexes including annual average sunshine duration,days with sunshine duration≥3 h·d-1 and days with sunshine duration≥6 h·d-1 to quantify the change of sunshine duration.Moreover,the changing trend of solar energy resources in China and its relationship with atmospheric circulation were analyzed.The results are as follows:(1)The spatial distribution of sunshine duration is uneven in China,and the sunshine duration is high in Qinghai-Tibet,Northwest and North China.The Cold Lake in Qinghai is the region with the longest average sunshine duration and the most days with sunshine duration≥6 h·d-1 in China.The Sichuan Basin is the region with the least annual average sunshine duration and days with sunshine duration≥3 h·d-1 and days with sunshine duration≥6 h·d-1.The annual average sunshine duration,days with sunshine duration≥3 h·d-1 and days with sunshine duration≥6 h·d-1 increase from the lowest Sichuan Basin to the higher latitude and higher altitude areas.(2)Annual average sunshine duration,days with sunshine duration≥3 h·d-1 and days with sunshine duration≥6 h·d-1 all show significant decreasing trends in China from 1960 to 2018(P<0.001).The annual sunshine duration in Northeast China,North China,South China and the central region of Xinjiang showed a significantly downward trend.However,it exhibited an increasing trend in Qinghai-Tibet Plateau,Loess Plateau and Yunnan-Kweichow Plateau.(3)The change of sunshine duration was significantly affected by atmospheric circulation.Interannual variation of sunshine duration was significantly and positively correlated with the intensity index of a polar vortex in Asia(P<0.001),and significantly and negatively correlated with the Arctic Oscillation index and the intensity index of a subtropical high in the western Pacific.The atmospheric circulation in eastern China mainly affects the change of sunshine duration by affecting the weather.These research results can provide important references for rational development and utilization of regional solar energy resources and prediction of sunshine duration change.关键词
日照时数/太阳能/日照强度/大气环流/相关性分析/变化趋势Key words
sunshine duration/solar energy/sunshine intensity/atmospheric circulation/correlation analysis/variation trend分类
天文与地球科学引用本文复制引用
汪姚,黄莉,尚丽君,廖花妹,谢水石,龚煜涵,钟科元..1960-2018年中国日照时数变化及其与大气环流的关系[J].热带气象学报,2024,40(1):146-155,10.基金项目
国家自然科学基金项目(41601600) （41601600）
江西省教育厅科技项目(GJJ211441) （GJJ211441）
赣州市科技计划项目(202101094931) （202101094931）
赣南师范大学地理与环境工程学院学科建设开放课题基金(DPGNNU1401) （DPGNNU1401）
江西省城市固废低碳循环技术重点实验室(赣南师范大学)开放基金(20212BCD42015)共同资助 （赣南师范大学）
