沙漠与绿洲气象2025，Vol.19Issue(3)：35-43,9.DOI:10.12057/j.issn.1002-0799.2406.21001
唐山地区太阳辐射时空特征
Spatiotemporal Characteristics of Solar Radiation in Tangshan
摘要
Abstract
By utilizing daily maximum and minimum temperatures,sunshine duration data from 11 meteorological observation stations in Tangshan from 1990 to 2023,along with daily total solar radiation data from the Laoting Radiation Observation Station during the same period,the total solar radiation at each meteorological station in Tangshan(except Leting)was calculated.This calculation was based on a comprehensive model incorporating sunshine percentage and diurnal temperature range.The spatial and temporal distribution characteristics of solar radiation in Tangshan were analyzed using methods such as Empirical Orthogonal Function(EOF),Rotated Empirical Orthogonal Function(REOF),the Mann-Kendall mutation test,and Empirical Mode Decomposition(EMD).The results indicated that the first EOF mode reflected a consistent regional variation pattern,with a significant increase in the 1990s and a notable decrease in the early 21st century.An abrupt change in solar radiation occurred in 2006,exhibiting a"more-less-more"pattern near the change point.The second EOF mode reflects the east-west inverse variation characteristics of solar radiation,with interdecadal changes consistent with the first mode,but without abrupt changes.The REOF spatial patterns are categorized into six types:northern,western,northwestern,southern coastal,central-southern,and eastern spatial distributions.The optimal tilt angle for photovoltaic systems is 35°-37°(slightly below local latitude),yielding 5 717-6 253 MJ/m2 annual radiation.关键词
太阳辐射/旋转经验正交函数分解/时空特征/最佳倾角Key words
solar radiation/Rotated Empirical Orthogonal Function(REOF)/spatiotemporal variation/optimum tilt angle分类
大气科学引用本文复制引用
陈震,王丹,王冠,费晓臣,史有瑜,张绍龙..唐山地区太阳辐射时空特征[J].沙漠与绿洲气象,2025,19(3):35-43,9.基金项目
河北省气象局面上项目(23zc16) （23zc16）
