沙漠与绿洲气象2025，Vol.19Issue(2)：92-99,8.DOI:10.12057/j.issn.1002-0799.2308.03002
基于地面常规气象观测数据的ERA5地面向下太阳总辐照度的订正技术
Correction Technique of the Surface Solar Radiation Downwards of ERA5 based on Conventional Ground Meteorological Observation
陈虹杏 1靳奎峰 2赵玮3
作者信息
- 1. 广东省气象数据中心,广东 广州 510641
- 2. 广东省气象服务中心,广东 广州 510641
- 3. 中国科学院深圳先进技术研究院,广东 深圳 518055
- 折叠
摘要
Abstract
Utilizing conventional meteorological observation data from automatic weather stations,a method based on Gradient Boosting Regression Tree model is proposed to correct the SSRD values derived from the ERA5 reanalysis dataset,produced by the European Centre for Medium-Range Weather Forecasts.Data from Guangzhou Station and Shantou Station from January 1,2019 to December 31,2021 were utilized for modeling training and testing.A cross-validation experiment was conducted to evaluate the transferability of the correction model of SSRD.The correlation coefficient between the monitoring estimate and the observation increased from 0.801-0.830 to 0.829-0.881,and the root mean square error decreased from 169.8-171.7 W/m2 to 155.5-159.8 W/m2.Further analysis shows that,in addition to the corrected element ERA5 SSRD,the solar altitude angle is the most important input in the Gradient Boosting Regression Tree model of total solar irradiance.Other influential variables,ranked by importance,include relative humidity,total cloud cover,near surface temperature and visibility.关键词
梯度提升树/地表的太阳向下总辐照度/ERA5再分析资料的SSRD数据Key words
Gradient Boosting Regression Tree/SSRD/SSRD data in ERA5 reanalysis data分类
大气科学引用本文复制引用
陈虹杏,靳奎峰,赵玮..基于地面常规气象观测数据的ERA5地面向下太阳总辐照度的订正技术[J].沙漠与绿洲气象,2025,19(2):92-99,8.
