气象研究与应用2025，Vol.46Issue(1)：67-75,9.DOI:10.19849/j.cnki.CN45-1356/P.2025.1.09
基于FY-4A资料的宁夏太阳总辐射空间分布特征研究
Study on the spatial distribution characteristics of total solar radiation in Ningxia based on FY-4A data
摘要
Abstract
This paper utilizes radiation observation data from national meteorological stations to validate and correct the total radiation data retrieved from the FY-4A satellite.Using the corrected data,the study investigates the refined spatial distribution characteristics of solar energy resources in Ningxia.The results show that the hourly average total irradiance of FY-4A pixels is generally higher than the observation values from meteorological stations,especially during the summer and autumn seasons.The correlation coefficient of the annual average hourly total irradiance between the meteorological stations and FY-4A is 0.6 to 0.7,which passes the confidence test at α=0.01.The total irradiance retrieval values in the afternoon are higher than those in the morning.The average deviation of different irradiance levels decreases as the levels increase,with significant negative deviations in winter and noticeable positive deviations in summer.After correction by using a linear regression model,the error in FY-4A retrieved total radiation significantly reduces,with the mean absolute error decreasing from over 180 W·m-2 to approximately 10 W·m-2,and the correlation coefficient significantly increases.After analyzing the temporal and spatial distribution characteristics of total solar irradiance in Ningxia with the corrected FY-4A data,it is found that the annual total solar irradiance distribution is higher in the north and lower in the south,ranging from 6 000 to 6 200 MJ·m-2 in the northern part of the region,5 900 to 6 000 MJ·m-2 in the central part of the region,5 500 to 5 900 MJ·m-2 in the southern part of the region.Seasonal variations are remarkable,peaking in summer and reaching a minimum in winter.关键词
FY-4A卫星/太阳总辐射/反演/检验Key words
FY-4A satellite/total solar radiation/retrieval/test分类
大气科学引用本文复制引用
高睿娜,左河疆,安兴琴,高娜..基于FY-4A资料的宁夏太阳总辐射空间分布特征研究[J].气象研究与应用,2025,46(1):67-75,9.基金项目
宁夏自然科学基金项目(2023AAC03793) （2023AAC03793）
