Findlay et al. Ocean acidification planetary boundary datasets

<b>The datasets here are for the outputs of the paper published in Global Change Biology, Findlay et al. (2025)</b><b>Paper abstract: </b>Ocean acidification has been identified in the Planetary Boundary Framework as a planetary process approaching a boundary that could lead to unacceptable environmental change. Using revised estimates of pre-industrial aragonite saturation state, state-of-the-art data-model products, including uncertainties, and assessing impact on ecological indicators, we improve upon the ocean acidification planetary boundary assessment and demonstrate that by 2020, the average global ocean conditions had already crossed into the uncertainty range of the ocean acidification boundary. This analysis was further extended to the subsurface ocean, revealing that up to 60% of the global subsurface ocean (down to 200 m) had crossed that boundary, compared to over 40% of the global surface ocean. These changes result in significant declines in suitable habitats for important calcifying species, including 43% reduction in habitat for tropical and subtropical coral reefs, up to 61% for polar pteropods, and 13% for coastal bivalves. By including these additional considerations, we suggest a revised boundary of 10% reduction from pre-industrial conditions more adequately prevents risk to marine ecosystems and their services; a benchmark which was surpassed by year 2000 across the entire surface ocean.<b>Datasets:</b><b><i>Findlay_OAPB_areaweighted_means_and_SD</i></b>: This dataset is the area-weighted mean and standard deviations of Ω_Arag across model grid cells within each region of interest at each depth layer (0 m, 25 m, 50 m, 100 m, and 200 m). Regions are: global, polar (Arctic defined by the area north of 65°N and Southern Ocean defined by the area south of 45°S), tropical (between 40°S to 40°N), coast (within 300 km from shore) and the California Current Ecosystem (CCE, defined by the geographic box of 47.5°N to 21.5°N, 108.5°W to 132.3°W).<b><i>Findlayetal_Table1_and_Table2</i></b> contains data from the paper that is displayed in table1 and 2. Table 1 is the % change in aragonite for the global and regional analysis of the boundaries - mean and SD. Table 2 is the % passed the thresholds for the biological indicators.<b><i>Findlayetal_OAPB_map_20%boundary</i></b> contains data used to create the map in Figure 1c of the paper.<b><i>Figure_S1_data</i></b> contains data used to create maps of the percentage reduction in aragonite saturation state between the pre-industrial year 1750 and year 2020 at four different depth layers, displayed in supplementary figure S1.<b><i>Figure_S2_data </i></b>contains data used to create maps of the change in surface ocean aragonite saturation state (Ω_Arag) between pre-industrial conditions in year 1750 and year 2020, 2050 and 2100 under three CO₂ emissions scenarios: low emissions SSP126, mid-emissions SSP245, and high emissions SSP370, displayed in supplementary figure S2.<b><i>Coral_data_fig3 </i></b>file contains data used to create the maps in figure 3 of the % change for coral (threshold 3.5).<b><i>Pteropod_bivalve_data_suppfigs</i></b> file contains data used to create the maps and % change for pteropods (threshold 1.2 and 1.5) and for bivalves (threshold 1.8).<b><i>Coral_OSETHZ_extracted</i></b> file contains lat-long matched environmental data from OceanSODA-ETHZ for corals and the summary statistics (relates to histograms in supplementary figure S7).<b><i>Bivalve_OSETHZ_extracted</i></b> file contains lat-long matched environmental data from OceanSODA-ETHZ for <i>M. gigas </i>and <i>M. Californianicus </i>and their summary statistics (relates to histograms in supplementary figure S7).<b><i>Pteropod_OSETHZ_extracted</i></b> file contains lat-long matched environmental data from OceanSODA-ETHZ for <i>M. gigas </i>and <i>M. Californianicus </i>and their summary statistics (relates to histograms in supplementary figure S7).

<b>本数据集均来自发表于《Global Change Biology》的Findlay等（2025）学术论文的研究产出</b>
<b>论文摘要：</b>
海洋酸化（Ocean Acidification）已被纳入行星边界框架（Planetary Boundary Framework），作为一种正逼近临界阈值的行星尺度过程，一旦突破该阈值可能引发难以接受的环境变化。本研究通过修正后的工业革命前文石饱和态（aragonite saturation state）估算值、纳入不确定性的前沿数据模型产品（data-model products），并评估其对生态指标的影响，优化了海洋酸化行星边界评估框架；研究结果显示，截至2020年，全球海洋平均状态已进入海洋酸化边界的不确定性区间内。本分析进一步拓展至次表层海洋，结果显示全球200米以浅水层的次表层海洋中，最高达60%的区域已突破该边界，而全球表层海洋突破该边界的比例超过40%。上述变化导致重要钙化物种的适宜栖息地大幅缩减：热带与亚热带珊瑚礁栖息地减少43%，极地翼足类（pteropods）栖息地缩减最高达61%，沿海双壳类（bivalves）栖息地缩减13%。纳入上述额外考量因素后，本研究提出修正后的海洋酸化边界：相较于工业革命前的环境状态，文石饱和态缩减10%的阈值可更有效地规避海洋生态系统及其服务功能面临的风险；截至2000年，全球表层海洋已全面突破该基准阈值。
<b>数据集：</b>
<b><i>Findlay_OAPB_areaweighted_means_and_SD</i></b>：该数据集包含各目标区域、各深度层（0米、25米、50米、100米及200米）内模型网格单元的文石饱和态（Ω_Arag）面积加权平均值与标准差。目标区域包括：全球海域、极地海域（北极定义为北纬65°以北区域，南大洋定义为南纬45°以南区域）、热带海域（南纬40°至北纬40°之间区域）、近岸海域（距岸300公里以内区域）以及加州洋流生态系统（California Current Ecosystem，缩写CCE，地理范围为北纬47.5°至21.5°、西经108.5°至132.3°）。
<b><i>Findlayetal_Table1_and_Table2</i></b>：包含论文中表1与表2的相关数据。其中表1为全球及各区域边界分析中文石饱和态的变化百分比（含平均值与标准差）；表2为各生物指标突破阈值的占比情况。
<b><i>Findlayetal_OAPB_map_20%boundary</i></b>：包含用于绘制论文图1c的相关数据。
<b><i>Figure_S1_data</i></b>：包含用于绘制补充图S1的相关数据，该图展示了1750年（工业革命前）与2020年之间，四个不同深度层的文石饱和态缩减百分比分布地图。
<b><i>Figure_S2_data</i></b>：包含用于绘制补充图S2的相关数据，该图展示了在三种二氧化碳排放情景下，1750年工业革命前与2020年、2050年、2100年的表层海洋文石饱和态（Ω_Arag）变化分布地图：低排放情景SSP126、中排放情景SSP245以及高排放情景SSP370。
<b><i>Coral_data_fig3</i></b>：包含用于绘制论文图3的相关数据，该图展示了珊瑚（阈值为3.5）的栖息地变化百分比分布地图。
<b><i>Pteropod_bivalve_data_suppfigs</i></b>：包含用于绘制补充图的相关数据，涵盖翼足类（阈值为1.2与1.5）及双壳类（阈值为1.8）的栖息地变化百分比分布地图。
<b><i>Coral_OSETHZ_extracted</i></b>：包含与珊瑚相关的OceanSODA-ETHZ经纬度匹配环境数据，以及相关统计量（对应补充图S7中的直方图内容）。
<b><i>Bivalve_OSETHZ_extracted</i></b>：包含与<i>M. gigas</i>及<i>M. Californianicus</i>相关的OceanSODA-ETHZ经纬度匹配环境数据，以及相关统计量（对应补充图S7中的直方图内容）。
<b><i>Pteropod_OSETHZ_extracted</i></b>：包含与<i>M. gigas</i>及<i>M. Californianicus</i>相关的OceanSODA-ETHZ经纬度匹配环境数据，以及相关统计量（对应补充图S7中的直方图内容）。