MotivationTiming, duration and severity of marine heatwaves are changing rapidly in response to anthropogenic climate change, thereby increasing the frequency of coral bleaching events. Mass coral bleaching events result from cumulative heat stress, which is commonly quantified through degree heating weeks (DHW). Here we introduce CoralBleachRisk, a daily‐resolution global dataset that characterises sea surface temperatures, heat stress anomalies and the timing, duration and magnitude of severe coral bleaching conditions from the recent past (1985) to the future (2100) under three contrasting Shared Socioeconomic Pathways. Our projections are downscaled to a 0.5° resolution (~50 km), bias‐corrected and validated using remotely sensed data of sea surface temperatures and a global dataset of historical coral bleaching events. An accompanying online software tool allows non‐specialist users to access aggregated metrics of coral bleaching risk and generate time series projections of coral vulnerability for Earth's coral reefs. Our dataset enables regional to global comparisons of future trends in severe coral bleaching risk.Main Types of Variables ContainedSea surface temperature (SST), SST anomaly, DHW, annual timing and duration of Bleaching Alerts.Spatial LocationGlobal.Time Period1985–2100.Major Taxa and Level of MeasurementCoral communities.Software FormatNetcdf (.nc).

中文翻译：

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CoralBleachRisk - 21 世纪珊瑚白化风险的全球预测


动机海洋热浪的时间、持续时间和严重程度因人为气候变化而迅速变化，从而增加了珊瑚白化事件的频率。大规模珊瑚白化事件是由累积热应激引起的，这通常通过度加热周 （DHW） 来量化。在这里，我们介绍了 CoralBleachRisk，这是一个日分辨率的全球数据集，在三个截然不同的共享社会经济途径下，描述了从近期（1985 年）到未来（2100 年）的海面温度、热应激异常以及严重珊瑚白化状况的时间、持续时间和幅度。我们的预测被缩小到 0.5° 分辨率（~50 公里），使用海面温度遥感数据和全球历史珊瑚白化事件数据集进行偏差校正和验证。随附的在线软件工具允许非专业用户访问珊瑚白化风险的汇总指标，并生成地球珊瑚礁珊瑚脆弱性的时间序列预测。我们的数据集能够对严重珊瑚白化风险的未来趋势进行区域与全球比较。包含的主要变量类型海面温度 （SST）、SST 异常、DHW、白化警报的年度时间和持续时间.空间位置全球.时间段1985–2100.主要分类群和测量水平珊瑚群落。软件格式Netcdf （.nc）。