1978-2017年 南极NSIDC海冰数据集

该套南极海冰数据集共包括四套数据，来自SMMR、SSM/I和SSMI/S三个传感器,采用被动微波遥感反演方法制作。前三套为海冰密集度数据，覆盖范围为南极，空间分辨率为25km：（1）覆盖时间从1978年11月到2017年2月，时间分辨率为逐月，数据每月存放一个bin文件；（2）覆盖时间从1978-10-26到2017-2-28，时间分辨率为两天，覆盖范围为南极，空间分辨率为25km，数据每年存放一个文件夹，每隔一天存放一个bin文件；（3）来自SSMIS传感器，覆盖时间从2015-1-1到2018-2-3，时间分辨率为逐日，数据每日存放一个bin文件；每个文件由300-byte的文件头（数据时间信息、投影方式、文件名…）和316*332的矩阵组成。第四套数据为海冰覆盖范围和海冰面积时间序列，覆盖时间从1978年11月到2017年12月，提供海冰覆盖范围和海冰面积的时间序列，时间分辨率为逐月，每月存放一个ASCII文件；每个文件由表头（时间、数据类型…）和39*1的海冰覆盖矩阵和39*1的海冰面积矩阵组成。

This Antarctic sea ice dataset includes four subsets of data derived from three sensors: SMMR, SSM/I, and SSMI/S, generated using passive microwave remote sensing inversion methods. The first three subsets are sea ice concentration data covering the entire Antarctic region with a spatial resolution of 25 km:
(1) Temporal coverage: November 1978 to February 2017; temporal resolution: monthly; data is stored as one bin file per month;
(2) Temporal coverage: 26 October 1978 to 28 February 2017; temporal resolution: two-day interval; spatial resolution: 25 km across the Antarctic region; data is stored in annual folders, with one bin file saved every other day;
(3) Derived from the SSMIS sensor; temporal coverage: 1 January 2015 to 3 February 2018; temporal resolution: daily; data is stored as one bin file per day;
Each bin file comprises a 300-byte file header (including data time information, projection method, file name, etc.) and a 316×332 matrix.
The fourth subset is a time series of sea ice extent and sea ice area, with temporal coverage from November 1978 to December 2017, providing time-series data of sea ice extent and sea ice area; temporal resolution: monthly; data is stored as one ASCII file per month;
Each ASCII file consists of a header (covering time, data type, etc.), a 39×1 sea ice extent matrix and a 39×1 sea ice area matrix.

搜集汇总

背景与挑战

背景概述

该数据集是1978年至2017年的南极海冰数据集，来自美国冰雪数据中心（NSIDC），包含四套基于被动微波遥感反演的数据：前三套为海冰密集度数据，空间分辨率为25km，时间分辨率包括逐月、两天和逐日，覆盖南极地区；第四套为海冰覆盖范围和面积的时间序列数据，时间分辨率为逐月。数据集总存储容量1.4 GB，文件数13668，格式为NetCDF，适用于长期南极海冰变化监测和分析。