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Data DescriptionNOAA Coral Reef Watch Operational Near-real-time Twice-weekly Global 50 km Satellite Coral Bleaching Thermal Stress Monitoring Product Suite - These data are archived at the NOAA National Centers of Environmental Information (NCEI). NOTICE: AS OF 2016-08-13, THESE DATA WILL ONLY BE AVAILABLE THROUGH NCEI IN THE FOLLOWING YEARLY ACCESSIONS: http://accession.nodc.noaa.gov/0075815 (2000-11-28 to 2000-12-31), http://accession.nodc.noaa.gov/0075816 (2001-01-01 to 2001-12-29), http://accession.nodc.noaa.gov/0075817 (2001-12-29 to 2002-12-31), http://accession.nodc.noaa.gov/0075818 (2002-12-31 to 2003-12-29), http://accession.nodc.noaa.gov/0075819 (2003-12-29 to 2004-12-28), http://accession.nodc.noaa.gov/0075820 (2004-12-28 to 2005-12-30), http://accession.nodc.noaa.gov/0075821 (2005-12-30 to 2006-12-30), http://accession.nodc.noaa.gov/0075822 (2006-12-30 to 2007-12-31), http://accession.nodc.noaa.gov/0075823 (2007-12-31 to 2008-12-31), http://accession.nodc.noaa.gov/0075825 (2008-12-31 to 2009-12-31), http://accession.nodc.noaa.gov/0075824 (2009-12-31 to 2010-12-30), http://accession.nodc.noaa.gov/0088492 (2010-12-30 to 2011-12-29), http://accession.nodc.noaa.gov/0101762 (2011-12-29 to 2012-12-31), http://accession.nodc.noaa.gov/0141324 (2012-12-31 to 2013-12-30), http://accession.nodc.noaa.gov/0142123 (2013-12-30 to 2014-12-29), http://accession.nodc.noaa.gov/0142124 (2014-12-29 to 2015-12-31). These data are a suite of NOAA Coral Reef Watch's operational global satellite coral bleaching monitoring products at 0.5 by 0.5 degree (~50 km) spatial resolution produced twice-weekly in near-real-time. The dataset contains nighttime sea surface temperature (SST) analysis field, nighttime SST anomaly, Bleaching HotSpot, and Bleaching Degree Heating Weeks (DHW) data. The nighttime SST analyses were derived from the measurement by Advanced Very High Resolution Radiometers (AVHRR) on board NOAA's Polar-Orbiting Operational Environmental Satellites (POES). The SST anomaly is the difference between the nighttime SST and the nighttime SST climatology for the corresponding period. The Bleaching HotSpot is a special type of SST anomaly showing the difference between the nighttime SST and the maximum monthly mean (MMM) SST climatology. The HotSpot data contain only the positive values for identifying potential thermal stress conducive to coral bleaching. DHW is the 12-week accumulation of HotSpot values that are at least 1 degree Celsius. A DHW value of one is equivalent to one week of HotSpot at one degree Celsius and a DHW of two is equivalent to two weeks of HotSpot at one degree Celsius or one week of HotSpot at two degrees Celsius. These data files are available in Hierarchical Data Format Release 4 (HDF4). Each HDF data file also includes browse images.
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