多源数据融合的南极冰盖冻融数据集（1999-2019）

南极冰盖表面融化是全球气候变化的敏感因子,其对于南极冰盖的物质能量平衡具有重要影响.本数据集利用微波辐射计、微波散射计和区域气候模型数据,基于阈值法获取各个数据源的冻融时间序列,配准后采用Categorical Triple Collocation(CTC)方法进行融合,得到1999-2019年南极冰盖冻融产品.该数据集4.45 km的空间分辨率高于已发布的产品,且结合了不同数据源的优势,能够提供数据时段内每日南极冰盖表面融化情况.该数据集的数据类型为整型,其中1代表融化,-1代表冻结.数据集存储为.no格式,压缩后的数据量为35.7 MB.Surface melting over the Antarctic Ice Sheet is a sensitive indicator of global climate change, and plays a critical role in the mass and energy balance of the Antarctic Ice Sheet. This dataset employs microwave radiometer, microwave scatterometer and regional climate model data. Freeze-thaw time series for each individual data source are derived using the threshold method, then co-registered and fused via the Categorical Triple Collocation (CTC) approach to generate the Antarctic Ice Sheet freeze-thaw product spanning the period 1999–2019. Boasting a spatial resolution of 4.45 km, which outperforms that of existing publicly released products, this dataset integrates the strengths of diverse data sources and provides daily surface melting conditions of the Antarctic Ice Sheet throughout the entire data period. The data type of this dataset is integer, where 1 denotes melting and -1 denotes freezing. The dataset is stored in .no format, with a compressed size of 35.7 MB.

搜集汇总

背景与挑战

背景概述

该数据集是一个基于多源数据融合的南极冰盖冻融产品，覆盖1999年至2019年，空间分辨率为4.45公里，高于现有公开产品。它利用微波辐射计、微波散射计和区域气候模型数据，通过CTC方法融合生成，提供每日南极冰盖表面融化状态（1表示融化，-1表示冻结），旨在监测全球气候变化对南极冰盖的影响。数据集以矢量数据形式存储，压缩后大小为35.7 MB，由武汉大学中国南极测绘研究中心等单位制作。