近43年江西省太阳辐射变化特征及其影响因素研究  

Study on the Trend and Influencing Factors of Solar Radiation in Jiangxi Province Over Recent 40 years

作　　者：甘瑞杰 李军利 王刘铭 苏校平 雷星宇 GAN Ruijie;LI Junli;WANG Liuming;SU Xiaoping;LEI Xingyu(Nanchang Meteorological Bureau,330038,Nanchang,PRC;College of Resources and Environment,Anhui Agricultural University,230036,Hefei,PRC;Jiangxi Vocational and Technical College of Information Application,330043,Nanchang,PRC)

机构地区：[1]南昌市气象局,南昌330038 [2]安徽农业大学资源与环境学院,合肥230036 [3]江西信息应用职业技术学院,南昌330043

出　　处：《江西科学》2024年第3期595-604,653,共11页Jiangxi Science

基　　金：江西省气象局2020年青年人才项目(JX2020Q03)。

摘　　要：基于江西省20个国家站1980—2022年逐日气象数据,利用Mann-Kendall趋势检验法、Pearson相关分析法分析了太阳辐射的长期变化趋势及其与气溶胶光学厚度、整层大气水汽含量、低云量和总云量之间的关系。研究发现:1)近43年来,受气溶胶光学厚度和整层大气水汽含量显著增长的影响,江西省太阳辐射以-5.7×10^(-3) MJ m^(-2) decade^(-1)的速度下降,总云量、低云量的微弱变化对太阳辐射的影响有限;2)夏季、秋季和冬季太阳辐射分别以-24×10^(-3) MJ m^(-2) decade^(-1)、-2.4×10^(-3) MJ m^(-2) decade^(-1)、-2.8×10^(-3) MJ m^(-2) decade^(-1)的速度下降,而春季太阳辐射以11.5×10^(-3) MJ m^(-2) decade^(-1)的速度上升,其中,夏季太阳辐射的下降受气溶胶光学厚度和低云量显著增加的影响,秋、冬季太阳辐射的下降受气溶胶光学厚度显著增加的影响,春季太阳辐射的增长主要取决于总云量的显著下降;3)气溶胶光学厚度和整层大气水汽含量增加导致80%的台站太阳辐射呈下降趋势,总云量和低云量下降导致20%的台站太阳辐射呈上升趋势,而修水、赣州站太阳辐射与4个影响因素的变化趋势相同的原因还需进一步研究。Based on the daily meteorological data of 20 national stations in Jiangxi province from 1980 to 2019,the long-term variation trend of solar radiation in Jiangxi province and the relationship between solar radiation and aerosol optical depth,water vapor content in the whole atmosphere,low cloud cover and total cloud cover were analyzed by Mann-Kendall trend test and Pearson correlation analysis.The results show that:1)In the past 43 years,the aerosol optical depth and atmospheric water vapor content of the whole layer has significant growth impact,and the annual average value of solar radiation in Jiangxi province decreased at a rate of-5.7×10^(-3)MJ m^(-2)decade^(-1),the slight variation of total cloud cover and low cloud cover has limited influence on the solar radiation variation.2)The average solar radiation in summer,autumn and winter decreased at a rate of-24×10^(-3) MJ m^(-2)decade^(-1),-2.4×10^(-3)MJ m^(-2)decade^(-1),-2.8×10^(-3) MJ m^(-2) decade^(-1),while the average solar radiation in spring increased at a rate of 11.5×10^(-3) MJ m^(-2) decade^(-1),and the decrease of solar radiation in summer is affected by the aerosol optical depth and low cloud cover;The fall of solar radiation in autumn is affected by the aerosol optical depth significantly increases the influence,and the decrease of solar radiation in winter is also mainly affected by the aerosol optical depth.The increase of solar radiation in spring mainly depends on the significant decrease of total cloud cover.3)The increase of aerosol optical depth and water vapor content in the whole atmosphere leads to the decrease of solar radiation at 80%of the stations,and the decrease of total cloud amount and low cloud amount leads to the increase of solar radiation at 20%of the stations.The reason why the solar radiation at Xiushui station and Ganzhou station has the same trend as the four influencing factors needs further research.

关 键 词：江西省 太阳辐射 气溶胶光学厚度 整层大气水汽含量 总云量 低云量 

分 类 号：P422[天文地球—大气科学及气象学]