EASE-Grid Sea Ice Age, Version 2

This data set provides weekly estimates of sea ice age for the Arctic Ocean from remotely sensed sea ice motion and sea ice extent.The ice age data are derived from a number of passive microwave imagers: the Scanning Multichannel Microwave Radiometer (SMMR), the Special Sensor Microwave/Imager (SSM/I), and the Special Sensor Microwave Imager Sounder (SSMIS). Visible and infrared data from the Advanced Very High Resolution Radiometer (AVHRR) were also utilized through 2004. In addition, International Arctic Buoy Program (IABP) drifting-buoy vectors and the National Centers for Environmental Prediction (NCEP)/National Center for Atmospheric Research (NCAR) Reanalysis Project (CDAS) are used to augment the satellite data. The data are on a sub-set of the Northern Hemisphere 12.5 km EASE-Grid. The data are in flat binary files and each has a corresponding browse GIF image for quick inspection of the data.本数据集基于遥感获取的海冰运动与海冰范围数据，提供北冰洋海域海冰年龄的周度估算值。海冰年龄数据源自多款被动微波成像仪：扫描多通道微波辐射计（Scanning Multichannel Microwave Radiometer, SMMR）、专用传感器微波成像仪（Special Sensor Microwave/Imager, SSM/I）以及专用传感器微波成像测深仪（Special Sensor Microwave Imager Sounder, SSMIS）。截至2004年，研究还用到了先进甚高分辨率辐射计（Advanced Very High Resolution Radiometer, AVHRR）获取的可见光与红外波段数据。此外，本数据集还引入国际北极浮标计划（International Arctic Buoy Program, IABP）的漂移浮标矢量数据，以及美国国家环境预报中心（National Centers for Environmental Prediction, NCEP）/美国国家大气研究中心（National Center for Atmospheric Research, NCAR）再分析项目（CDAS）的数据以补充卫星观测资料。数据采用北半球12.5千米分辨率EASE-Grid格网的子集格式，以平面二进制文件存储，每份数据均配有对应的GIF预览图像，便于快速检视数据内容。