Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 1

This data set is retired and no longer available for download. We recommend using the newest version of Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data (NSIDC-0051) data set as an alternative. This data set is generated from brightness temperature data and is designed to provide a consistent time series of sea ice concentrations spanning the coverage of several passive microwave instruments.The data are provided in the polar stereographic projection at a grid cell size of 25 x 25 km.本数据集已退役，不再提供下载。我们推荐使用新版的雨云7号扫描多通道微波辐射计（Nimbus-7 SMMR）与国防气象卫星计划专用扫描微波成像仪/专用微波扫描辐射计（DMSP SSM/I-SSMIS）被动微波数据海冰浓度数据集（NSIDC-0051）作为替代方案。 本数据集基于亮温数据生成，旨在提供覆盖多款被动微波仪器观测范围的一致化海冰浓度时间序列。数据采用极地立体投影格式，网格单元尺寸为25×25千米。