Polar Stereographic Valid Ice Masks Derived from National Ice Center Monthly Sea Ice Climatologies, Version 1

These valid ice masks provide a way to remove spurious ice caused by residual weather effects and land spillover in passive microwave data. They are derived from the National Ice Center Arctic Sea Ice Charts and Climatologies data set and show where ice could possibly exist based on where it has existed in the past. There are 12 valid ice masks, one for each month, in netCDF-CF 1.6 compliant files with all associated metadata. The data are on a 304 x 448 grid and are available via FTP.

本有效海冰掩膜可用于去除被动微波数据中由残留气象效应与陆地溢漏效应引发的虚假冰区。该数据集源自美国国家冰情中心（National Ice Center）北极海冰图与气候学数据集，基于历史冰区分布情况，标识出理论上可能存在海冰的区域。数据集共包含12张月度有效海冰掩膜，存储于符合netCDF-CF 1.6标准的文件中，附带全部相关元数据。数据采用304×448的网格格式，可通过文件传输协议（FTP）获取。