Data and code used in this study "Antarctic sea-ice loss drives Southern Ocean production regime shift"
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Description of Data and Code Availability All data and code supporting the manuscript of “Antarctic sea-ice loss drives Southern Ocean production regime shift” (Chao Zhang, Thomas J. Browning, Anmin Duan, Eric P. Achterberg) are publicly available. Datasets and custom scripts are summarised below All custom scripts developed for this study are archived and freely accessible: Trend calculation (Fortran 90) – Computes linear trends, statistical significance, moving t-test, Empirical Orthogonal Function (EOF) analysis for gridded data. Information flow (MATLAB) – Implements the Liang–Kleeman information flow method to quantify causal direction between Antarctic sea ice and atmospheric circulation. Storm pressure density index (MATLAB) – Processes synoptic-scale storm tracks, applies trajectory‑level quality control, and computes austral summer pressure‑density indices over the Southern Ocean. Land–sea mask generation (MATLAB) – Uses M_Map and GSHHS coastline data to create an accurate high‑resolution land mask. Full list of publicly archived datasets Sea ice Hadley Centre HadISST1 – hadleyserver.metoffice.gov.uk/hadisst/data/download.html ORAS5 sea‑ice concentration and wind stress – doi.org/10.24381/cds.67e8eeb7 NSIDC sea‑ice extent/area (G02135) – noaadata.apps.nsidc.org/NOAA/G02135/south/monthly/data/ Ocean primary production Global Ocean Colour primary production – doi.org/10.48670/moi-00281 MODIS chlorophyll‑a and PAR – oceandata.sci.gsfc.nasa.gov/l3/ Atmospheric reanalysis & dust ERA5 full reanalysis – doi.org/10.24381/cds.6860a573 MERRA‑2 dust aerosol diagnostics – doi.org/10.5067/RZIK2TV7PP38 MERRA‑2 surface turbulent fluxes – doi.org/10.5067/0JRLVL8YV2Y4 Ocean physics and iron ECCO V4R4 vertical velocity – doi.org/10.5067/ECG5M-OVE44 ECCO V4R4 mixed layer depth – doi.org/10.5067/ECG5M-OML44 Global micronutrient iron concentration climatology – doi.org/10.48670/moi-00019 Storm tracks Extratropical cyclone tracker code and output – github.com/jlodise/JGR2022_ExtratropicalCycloneTracker Usage & correspondenceAll materials are free for non‑commercial scientific use. Please cite this URL and the original data sources. For questions, contact the corresponding authors: Chao Zhang (chaozhang@xmu.edu.cn) or Eric P. Achterberg (eachterberg@geomar.de).
数据与代码可用性说明 所有支撑论文《南极海冰损失驱动南大洋生产型态转变》(Antarctic sea-ice loss drives Southern Ocean production regime shift,作者:Chao Zhang、Thomas J. Browning、Anmin Duan、Eric P. Achterberg)的相关数据与代码均已公开获取,下文将对所涉数据集及自定义研究脚本进行汇总说明。 所有为本研究开发的自定义脚本均已存档并可免费获取: - 趋势计算(Fortran 90)——针对网格化数据计算线性趋势、统计显著性、移动t检验以及经验正交函数(Empirical Orthogonal Function,EOF)分析。 - 信息流(MATLAB)——实现Liang-Kleeman信息流方法,以量化南极海冰与大气环流间的因果作用方向。 - 风暴压力密度指数(MATLAB)——处理天气尺度风暴轨迹,开展轨迹层面的质量控制,并计算南大洋南半球夏季的压力密度指数。 - 海陆掩模生成(MATLAB)——依托M_Map工具箱与GSHHS海岸线数据,构建高精度高分辨率的陆地掩模。 ### 公开存档数据集完整列表 #### 海冰数据集 1. 哈德利中心HadISST1数据集——访问链接:hadleyserver.metoffice.gov.uk/hadisst/data/download.html 2. ORAS5海冰浓度与风应力数据——DOI:10.24381/cds.67e8eeb7 3. 美国国家冰雪数据中心(NSIDC)海冰范围/面积数据集(G02135)——访问链接:noaadata.apps.nsidc.org/NOAA/G02135/south/monthly/data/ #### 海洋初级生产力数据集 1. 全球海洋颜色遥感初级生产力数据集——DOI:10.48670/moi-00281 2. MODIS叶绿素-a与光合有效辐射(Photosynthetically Available Radiation,PAR)数据——访问链接:oceandata.sci.gsfc.nasa.gov/l3/ #### 大气再分析与气溶胶粉尘数据集 1. ERA5全再分析数据集——DOI:10.24381/cds.6860a573 2. MERRA-2粉尘气溶胶诊断数据——DOI:10.5067/RZIK2TV7PP38 3. MERRA-2地表湍流通量数据——DOI:10.5067/0JRLVL8YV2Y4 #### 海洋物理与铁元素数据集 1. ECCO V4R4垂直速度数据——DOI:10.5067/ECG5M-OVE44 2. ECCO V4R4混合层深度数据——DOI:10.5067/ECG5M-OML44 3. 全球微量营养元素铁浓度气候态数据集——DOI:10.48670/moi-00019 #### 风暴轨迹数据集 温带气旋追踪代码与结果——访问链接:github.com/jlodise/JGR2022_ExtratropicalCycloneTracker ### 使用与通信说明 所有材料仅供非商业性科学研究使用,请引用本数据集链接与原始数据源。如有疑问,请联系通讯作者:Chao Zhang(chaozhang@xmu.edu.cn)或Eric P. Achterberg(eachterberg@geomar.de)。



