APPLYING MCSST TO CORAL-REEF BLEACHING
APPLYING MCSST TO CORAL-REEF BLEACHING
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DOI：
10.1016/0273-1177(95)00396-v
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发表时间：
1995-01-01
期刊：
影响因子：
--
通讯作者：
STRONG, AE
中科院分区：
文献类型：
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作者：
GLEESON, MW;STRONG, AE
在20世纪80年代和90年代初，观察到前所未有的频率和全球范围的珊瑚礁白化事件。水温升高被怀疑是这一时期大规模白化事件的主要诱因。利用1982-1992年美国国家海洋和大气管理局（NOAA）多通道海温（MCSST）卫星图像，研究了海温（SSTs）与珊瑚白化事件的关系。夜间MCSST周平均值与系泊浮标的温度进行了比较，以使卫星对海洋真实。整个热带地区11个单独浮标比较的平均误差约为0.5℃。确认的卫星海温数据应用于百慕大（1988年、1991年）、塔希提岛（1984年、1987年、1991年）和牙买加（1987年、1989年、1990年）的白化事件，并选择伯利兹附近一个未白化的地点作为对照。MCSST数据显示，海温升高与白化事件的发生和持续时间一致。制定了漂白阈值。为伯利兹和牙买加珊瑚礁遗址制定了MCSST度加热周（DHW）漂白指数。建议将26 DHW的累积热应力作为伯利兹和牙买加大规模珊瑚礁白化的阈值。
In the 1980s and early 1990s, coral reef bleaching events of unprecedented frequency and global extent were observed. Elevated water temperature is suspected as the primary causal stress of mass bleaching events from this period. The relationship between sea surface temperatures (SSTs) and coral bleaching events was investigated using National Oceanic and Atmospheric Administration (NOAA) Multi-Channel Sea Surface Temperature (MCSST) satellite imagery from 1982-1992. Nighttime MCSST weekly averages were compared with moored-buoy temperatures for sea-truthing the satellite. Average errors from 11 individual buoy comparisons throughout the tropics were found to be approximately 0.5 degrees C. Confirmed satellite SST data were applied to bleaching events at Bermuda (1988, 1991), Tahiti (1984, 1987, 1991), and Jamaica (1987, 1989, 1990), with a non-bleached site off Belize selected as control. MCSST data showed elevated SSTs coincided with bleaching events both in onset and duration. Bleaching thresholds were developed. An MCSST Degree Heating Weeks (DHW) bleaching index was developed for the Belizean and Jamaican reef sites. A cumulative heating stress of 26 DHW is proposed as the threshold for mass reef bleaching at Belize and Jamaica.