The Coral Reef Temperature Anomaly Database (CoRTAD) - Global, 4 km, Sea Surface Temperature and Related Thermal Stress Metrics for 1985-2005 (NODC Accession 0044419)

The Coral Reef Temperature Anomaly Database (CoRTAD) is a collection of sea surface temperature (SST) and related thermal stress metrics, developed specifically for coral reef ecosystem applications but relevant to other ecosystems as well. The CoRTAD contains global, approximately 4 km resolution SST data on a weekly time scale from 1985 through 2005. In addition to SST, it contains SST anomaly (SSTA, weekly SST minus weekly climatological SST), thermal stress anomaly (TSA, weekly SST minus the maximum weekly climatological SST), SSTA Degree Heating Week (SSTA_DHW, sum of previous 12 weeks when SSTA >= 1 degree C), SSTA Frequency (number of times over previous 52 weeks that SSTA >= 1 degree C), TSA DHW (TSA_DHW, also known as a Degree Heating Week, sum of previous 12 weeks when TSA >= 1 degree C),and TSA Frequency (number of times over previous 52 weeks that TSA >= 1 degree C).The CoRTAD was created at the NOAA National Oceanographic Data Center in partnership with the University of North Carolina - Chapel Hill, with support from the NOAA Coral Reef Conservation Program. To provide sea surface temperature data and related thermal stress parameters with good temporal consistency, high accuracy, and fine spatial resolution. The CoRTAD is intended primarily for climate and ecosystem related applications and studies and was designed specifically to address questions concerning the relationship between coral disease and bleaching and temperature stress.珊瑚礁温度异常数据库（Coral Reef Temperature Anomaly Database，CoRTAD）是一套海表温度（sea surface temperature，SST）及相关热应力指标数据集，专为珊瑚礁生态系统应用开发，同时也可应用于其他生态系统研究。该数据集涵盖1985年至2005年间的全球周尺度海表温度数据，空间分辨率约为4千米。除海表温度外，该数据集还包含海表温度距平（SST anomaly，SSTA，即周际海表温度与同期气候态海表温度的差值）、热应力距平（thermal stress anomaly，TSA，即周际海表温度与同期气候态最高海表温度的差值）、海表温度距平热累积周（SSTA Degree Heating Week，SSTA_DHW，指过去12周内海表温度距平≥1℃的总和）、海表温度距平发生频次（即过去52周内海表温度距平≥1℃的次数）、热应力距平热累积周（TSA Degree Heating Week，TSA_DHW，又称热累积周，指过去12周内热应力距平≥1℃的总和）以及热应力距平发生频次（即过去52周内热应力距平≥1℃的次数）。CoRTAD由美国国家海洋和大气管理局（NOAA）国家海洋数据中心联合北卡罗来纳大学教堂山分校开发，并得到了NOAA珊瑚礁保护计划的支持。 该数据集旨在提供时间一致性良好、精度高且空间分辨率精细的海表温度数据及相关热应力参数。CoRTAD主要面向气候与生态系统相关的应用及研究，其开发初衷是为了解决珊瑚病害、白化与温度胁迫之间的关联问题。