青藏高原地区逐小时地表上下行长、短波辐射数据集（2016-2022）

作为世界上海拔最高、地势最复杂的高原之一，青藏高原的地理环境和气候条件对地表下行辐射的分布和变化产生显著影响。青藏高原地区高时空分辨率的地表上下行辐射的分布特征和变化趋势对于揭示全球能量分配规律、研究气候变化和探究地表能量平衡具有重要意义。本数据集基于Himawari-8卫星遥感数据生产，参数包括2016-2022年的地表处上行长波辐射、上行短波辐射、下行长波辐射和下行短波辐射，单位为W/m^2。数据为netCDF格式，分辨率为逐小时2km。将本数据集、CERES、ERA5和GLASS主流辐射产品与中国气象局CMA地面观测站点数据进行对比得出本数据集的下行短波辐射具有最优的RMSE和R，分别为28.8 W/m^2和0.93。

As one of the highest and most topographically complex plateaus on Earth, the Tibetan Plateau’s geographical environment and climatic conditions exert significant impacts on the distribution and variation of surface downward radiation. The distribution characteristics and variation trends of surface upward and downward radiation with high spatiotemporal resolution over the Tibetan Plateau are of great significance for revealing global energy allocation rules, studying climate change, and investigating surface energy balance. This dataset is produced based on Himawari-8 satellite remote sensing data, with parameters including surface upward longwave radiation, upward shortwave radiation, downward longwave radiation and downward shortwave radiation from 2016 to 2022, with the unit of W/m². The data is stored in netCDF format, with a spatial resolution of 2 km and a temporal resolution of 1 hour. Through a comparison between this dataset, three mainstream radiation products (CERES, ERA5 and GLASS) and ground observational data from the China Meteorological Administration (CMA), it is found that this dataset exhibits the optimal RMSE and R for downward shortwave radiation, with values of 28.8 W/m² and 0.93, respectively.

搜集汇总

背景与挑战

背景概述

该数据集提供了2016年至2022年青藏高原地区逐小时的地表上下行长波和短波辐射数据，基于Himawari-8卫星遥感生产，空间分辨率为2km，数据格式为netCDF。其下行短波辐射精度较高，与地面观测对比的RMSE为28.8 W/m^2、R为0.93，适用于全球能量分配和气候变化研究。