ESA Sea Ice Climate Change Initiative (Sea_Ice_cci): High(er) Resolution Sea Ice Concentration Climate Data Record Version 3 (SSM/I and SSMIS)

This climate data record of sea ice concentration (SIC) is obtained using passive microwave satellite data from the Special Sensor Microwave Imager (SSM/I) and the Special Sensor Microwave Imager Sounder (SSMIS) over the polar regions (Arctic and Antarctic). The processing chain features: 1) dynamic tuning of tie-points and algorithms, 2) correction of atmospheric noise using a Radiative Transfer Model, 3) computation of per-pixel uncertainties, 4) an optimal hybrid sea ice concentration algorithm, and 5) pan-sharpening of the SIC fields using the near-90 GHz imagery channels. This dataset was generated by the ESA Climate Change Initiative (CCI+) Sea Ice Phase 1 project. This dataset is an enhanced-resolution version of the EUMETSAT Ocean and Sea Ice Satellite Application Facility Global Sea Ice Concentration Climate Data Record (OSI SAF OSI-450-a CDR) over the period 1991-2020.

本海冰密集度（Sea Ice Concentration, SIC）气候数据记录，采用源自专用传感器微波成像仪（Special Sensor Microwave Imager, SSM/I）与专用传感器微波成像仪/探测器（Special Sensor Microwave Imager Sounder, SSMIS）获取的被动微波卫星数据，针对北极与南极极地区域生成。其处理流程包含以下环节：1）定标点与算法的动态调谐；2）借助辐射传输模型（Radiative Transfer Model）修正大气噪声；3）逐像元不确定性计算；4）采用最优混合海冰密集度反演算法；5）利用近90GHz影像通道对SIC场进行全色锐化。本数据集由欧洲空间局（European Space Agency, ESA）气候变化倡议（Climate Change Initiative, CCI+）海冰第一阶段项目研制生成。该数据集为1991-2020年间，欧洲气象卫星应用组织（European Organisation for the Exploitation of Meteorological Satellites, EUMETSAT）海洋与海冰卫星应用设施（Ocean and Sea Ice Satellite Application Facility, OSI SAF）发布的全球海冰密集度气候数据记录（OSI SAF OSI-450-a CDR）的增强分辨率版本。

搜集汇总

背景与挑战

背景概述

该数据集是一个高分辨率海冰浓度气候数据记录，基于SSM/I和SSMIS被动微波卫星数据，覆盖北极和南极地区，时间跨度为1991-2020年。它采用先进处理技术（如动态算法调谐、大气噪声校正和混合算法）生成，是EUMETSAT OSI SAF数据集的增强分辨率版本，由ESA气候变化倡议海冰项目开发。