Reference dataset for sea ice concentration

20211111: The dataset has been augmented with SIC0 (open water) and SIC1 (total ice cover) data from 2016-2019. Version 3 constitutes the entire v2.2.1 dataset and these new 2016-19 files.20190305: The 20190305 update (2.2.1) includes some updated CRREL-IMB based datafiles replacing a few empty files in the 20190207 version (2.2).20190207: Note that there was a bug in our reading of the accumulated ERA-I fields in the original dataset. For time series analysis (CRREL-IMB and OIB-backtrack), please use the ERAreruns dataset now also available here.In version 2.2 (2019-02-07) of the dataset and manual, this issue has been described and corrected. We recommend that all users use version 2.2. <br>The RRDP is a set of comma separated ASCII files which contain reference sea ice concentrations and/or other relevant data and co-located NWP data from ERA-Interim, satellite Brightness Temperatures (TBs) extracted from the AMSR-E/AMSR2 swath datasets, ASCAT, QuikSCAT, SMOS and SMAP data to be used to for ice concentration calculations and evaluations. The dataset is easy to use by reading the files line by line, calculate Sea Ice Concentration from the given TBs and compare with the given reference SIC. Please read the included manual for additional information20211111：本数据集已补充2016至2019年的SIC0（开阔水域，open water）与SIC1（总冰盖，total ice cover）数据。版本3包含完整的v2.2.1数据集以及这批新增的2016-2019年数据文件。 20190305：20190305版本更新（2.2.1）包含若干经更新的基于CRREL-IMB的数据文件，用于替换20190207版本（2.2）中的部分空数据文件。 20190207：请注意，原始数据集中对累积ERA-I场的读取逻辑存在缺陷。针对时间序列分析（CRREL-IMB与OIB-backtrack），请使用本页面现已发布的ERAreruns数据集。在本数据集2.2版本（2019-02-07）及对应手册中，该问题已被阐明并修正。我们建议所有用户使用版本2.2。<br>RRDP为一组逗号分隔的ASCII文件，其中包含参考海冰浓度 (Sea Ice Concentration) 及/或其他相关数据，以及与ERA-Interim（欧洲中期天气预报中心再分析数据集）数值天气预报 (Numerical Weather Prediction) 数据、从AMSR-E/AMSR2条带数据集提取的卫星亮温 (Brightness Temperatures, TBs)、ASCAT（高级散射计）、QuikSCAT（快速散射计）、SMOS（土壤湿度与海洋盐度卫星）及SMAP（土壤湿度主动被动卫星）数据相匹配的同位观测数据，可用于海冰浓度的计算与评估。 该数据集使用便捷，仅需逐行读取文件，即可根据给定的亮温计算海冰浓度，并与提供的参考SIC进行对比。 请查阅随附手册以获取更多详细信息。