IOCAS-SIPNet sea ice prediction for SIPN​ south 2024-2025

IOCAS-SIPNet_001_20241201-20250228_total-area：This file with one row and 90 comma-separated values, each expressing daily sea-ice area for the 31 + 31 + 28 days of the December-February period. Units must be 106 km².IOCAS-SIPNet_001_20241201-20250228_regional-area：This file with 36 rows each displaying 90 comma-separated values following the same requirements as diagnostic 1. Each row corresponds to a 10° longitude bin. First row: 0° - 10°; second row: 10°-20°; …, 36th row: 350°-360°.IOCAS-SIPNet_001_20241201-20250228_concentration: A NetCDF file with 90 timesteps (one per day from December 1st 2024 to February 28th 2025). Each time step displays the spatial field of sea-ice concentration. - Sea-ice concentration is defined as the fraction of the grid cell covered by sea ice, is named siconc, and is expressed in %.- Longitude and latitude are reported under variables longitude and latitude.- A land-sea mask is provided through a variable named sftof that expresses the percentage of the grid cell covered by ocean (units %).- Areas of grid cells are provided through a variable named areacello that expresses the area of the grid cell in m².

IOCAS-SIPNet_001_20241201-20250228_total-area：该文件仅包含1行数据，内含90个以逗号分隔的数值，每个数值对应2024年12月至2025年2月期间（总计31+31+28天）的每日海冰总面积，单位为10⁶平方千米。
IOCAS-SIPNet_001_20241201-20250228_regional-area：该文件包含36行数据，每行均含90个逗号分隔的数值，格式要求与上述总海冰面积文件一致。每行对应一个10°经度区间：第1行对应0°~10°，第2行对应10°~20°，……，第36行对应350°~360°。
IOCAS-SIPNet_001_20241201-20250228_concentration：该文件为NetCDF（网络通用数据格式）文件，包含90个时间步（对应2024年12月1日至2025年2月28日的每日数据）。每个时间步存储海冰浓度（sea-ice concentration）的空间场。
- 海冰浓度定义为网格单元被海冰覆盖的占比，变量名为siconc，单位为百分比（%）。
- 经度与纬度信息通过名为longitude和latitude的变量存储。
- 海陆掩膜通过名为sftof的变量提供，该变量表示网格单元内海洋覆盖的百分比（单位：%）。
- 网格单元面积通过名为areacello的变量提供，单位为平方米（m²）。