2020-2021年青藏高原地区全天空地表下行短波辐射数据集

本数据集包含2020-2021年青藏高原地区逐月、年平均全天空地表下行短波辐射。数据是由全天空瞬时值平均到月，年尺度。空间分辨率为0.1°，数据单位为W/㎡。该数据集利用改进的物理参数化方案，综合考虑了臭氧吸收、气溶胶吸收和散射、水汽吸收、瑞利散射、均一混合气体、云层和地形的影响，基于ERA5再分析数据、OMI臭氧数据、SRTDEM数据以及MODIS系列云产品、气溶胶产品和反照率等产品生成。基于青藏高原实测站点数据验证结果表明，月尺度地表下行短波辐射均方根误差为62 W/㎡。

This dataset provides monthly and annual averaged all-sky surface downward shortwave radiation over the Qinghai-Tibet Plateau spanning 2020 to 2021. The data are averaged from all-sky instantaneous measurements to monthly and annual temporal scales, with a spatial resolution of 0.1° and a unit of W/m². Developed with an improved physical parameterization scheme that comprehensively incorporates the impacts of ozone absorption, aerosol absorption and scattering, water vapor absorption, Rayleigh scattering, uniformly mixed gases, clouds and terrain, this dataset is generated based on ERA5 reanalysis data, OMI ozone data, SRTDEM data, as well as MODIS series cloud products, aerosol products and albedo products. Validation against in-situ station observations over the Qinghai-Tibet Plateau shows that the root-mean-square error (RMSE) of monthly-scale surface downward shortwave radiation is 62 W/m².

搜集汇总

背景与挑战

背景概述

该数据集提供了2020-2021年青藏高原地区逐月和年平均全天空地表下行短波辐射数据，空间分辨率为0.1°，单位为W/㎡。其特点是基于改进的物理参数化方案，综合多种数据源（如ERA5、OMI、MODIS）生成，考虑了臭氧、气溶胶、云层和地形等因素，确保数据准确性；验证结果表明月尺度均方根误差为62 W/㎡，具有可靠的实际应用价值。