青藏高原地区逐日地表上下行长、短波辐射数据集（2002-2022）

青藏高原是全球气候变化的高度敏感区域，深入研究其辐射收支的长期时空变化对于确定全球能量循环和阐明潜在的变暖机制具有重要意义。遥感观测具有全天观测，观测范围广，观测波段多的特点，但受限于云雪等天气状况的影响，遥感辐射数据在时间序列的连续性上存在明显缺陷，而且，现有的研究显示全天候条件下长波辐射准确估算能有一定挑战。本数据集基于MODIS数据生产，参数包括2002-2022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，分辨率为逐日1km。该数据集产品与CERES结果具有较高的一致性，R值达到0.8以上，这些参数对地表辐射平衡、能量交换以及天气气候的形成具有决定性的意义。

The Qinghai-Tibet Plateau is a highly sensitive region to global climate change. In-depth studies on the long-term spatiotemporal variations of its radiation budget are of great significance for determining the global energy cycle and clarifying the underlying warming mechanisms. Remote sensing observations feature all-day coverage, wide spatial coverage, and multiple observation bands, but they are constrained by weather conditions such as clouds and snow, resulting in obvious defects in the continuity of time-series remote sensing radiation data. Moreover, existing studies indicate that accurate estimation of longwave radiation under all-sky conditions remains a considerable challenge. This dataset is generated based on MODIS data, with parameters including surface-upwelling longwave radiation, surface-upwelling shortwave radiation, surface-downwelling longwave radiation, and surface-downwelling shortwave radiation from 2002 to 2022, with the unit of W/m². The data is stored in netCDF format, with a spatial resolution of 1 km and a temporal resolution of daily. This dataset product exhibits high consistency with CERES results, with a correlation coefficient (R) exceeding 0.8. These parameters are critically important for surface radiation balance, energy exchange, and the formation of weather and climate.

搜集汇总

背景与挑战

背景概述

该数据集提供了2002-2022年青藏高原地区逐日地表上下行长、短波辐射数据，空间分辨率为1km-10km，数据格式为netCDF。数据集基于MODIS数据生产，与CERES结果具有较高一致性，适用于地表辐射平衡和能量交换研究。