Climate Record of Wintertime Wave-Affected Marginal Ice Zones in the Atlantic Arctic based on CryoSat-2,2010-2022

This record contains data related to article "A 12-Year Climate Record of Wintertime Wave-Affected Marginal Ice Zones in the Atlantic Arctic based on CryoSat-2 ". Wave-affected marginal ice zone (MIZ) is an integral part of the sea ice cover, and a key region for air-ice-sea interactions in polar regions. We develop a novel retrieval algorithm for wave-affected MIZs based on the delay-Doppler radar altimeter onboard CryoSat-2 (CS2). CS2 waveform power and the waveform stack statistics are used to determine the MIZ locations. Based on the CS2 data since 2010, we generate a record of wave-affected MIZs in the Atlantic Arctic, spanning 12 winters between 2010 and 2022. The dataset contains two parts. First, the txt file contains retrieved MIZ locations obtained from each single track. Each column of data is represented by the corresponding CS2 product name, year, month, day, hour, regional flag (1:GS region,2:NS region,3:BS region), the start longitude and latitude of the marginal ice zone on each track, the end longitude and latitude of the marginal ice zone. Second,the gridded dataset is based on the along-track MIZ retrieval results, and it records the presence of the MIZ on the monthly basis. The latitude-longitude grid is adopted, with 2 degrees of longitude spacing and 1 degree of latitude spacing. Each file contains the following variables: the time, the MIZ flag, and the location flag. In this new version, we provide files in both NetCDF and GeoTIFF formats for users to download.本数据集关联论文《基于CryoSat-2的大西洋北极冬季受海浪影响边缘冰区12年气候观测记录》。受海浪影响的边缘冰区（Marginal Ice Zone，简称MIZ）是海冰覆盖的重要组成部分，亦是极地地区海-冰-气相互作用的关键区域。本研究基于CryoSat-2（以下简称CS2）搭载的延迟多普勒雷达高度计，开发了一种全新的受海浪影响边缘冰区反演算法。研究通过CS2的波形功率与波形堆栈统计特征确定边缘冰区的空间位置。基于2010年以来的CS2观测数据，我们生成了2010至2022年间共12个冬季的大西洋北极受海浪影响边缘冰区观测记录。本数据集分为两部分：其一为文本文件，存储了各单条轨道反演得到的边缘冰区位置信息。数据各列依次对应CS2产品名称、年份、月份、日期、时刻、区域标识（1：格陵兰海区域，2：挪威海区域，3：巴芬湾区域）、每条轨道上边缘冰区的起始经纬度与终止经纬度。其二为网格化数据集，基于沿轨边缘冰区反演结果构建，按月记录边缘冰区的存在情况。该数据集采用经纬度网格，经度间隔为2°，纬度间隔为1°。每个文件包含以下变量：时刻、边缘冰区标识与区域标识。在本新版数据集中，我们提供了NetCDF与GeoTIFF两种格式的文件供用户下载。