NOAA Coral Reef Watch Operational Near-real-time Twice-weekly Global 50 km Satellite Coral Bleaching Thermal Stress Monitoring Product Suite

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NOAA Coral Reef Watch program produces a suite of near-real-time global 50 km monitoring products, based on sea surface temperature (SST) observations from NOAA's Polar-orbiting Operational Environmental Satellites (POES), to pinpoint areas around the world where heat stress is sufficient to cause mass coral bleaching. This product suite is produced twice a week operationally and includes nighttime sea surface temperature, nighttime sea surface temperature anomaly, coral bleaching HotSpot, Degree Heating Week, and Bleaching Alert Area products.
  • Cite as: DOC/NOAA/NESDIS/STAR/CRW > Coral Reef Watch (2011). NOAA Coral Reef Watch Operational Near-real-time Twice-weekly Global 50 km Satellite Coral Bleaching Thermal Stress Monitoring Product Suite. National Oceanographic Data Center, NOAA. Dataset. [access date]
gov.noaa.nodc:CRW-TS50km
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Distribution Formats
  • HDF (Version: 4)
  • BMP (Version: 12)
    • File Specification: Windows Metafile
Ordering Instructions Data may be searched and downloaded using online services provided by NCEI using the online resource URLs in this record. Contact NCEI Information Services for custom orders. When requesting data from NCEI, the desired data set may be referred to by the unique package identification number listed in this metadata record.
Distributor DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact Information Services
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
301-713-3277
NCEI.Info@noaa.gov
Time Period 2000-11-28 to 2015-12-31
Spatial Bounding Box Coordinates
N: 85.25
S: -80.25
E: 180
W: -180
Spatial Coverage Map
General Documentation
  • Dataset Description
    Navigate directly to the URL for a descriptive web page with download links.
Associated Resources
  • Enhanced 50-km (E-50) Satellite Coral Bleaching Monitoring
  • Improvements to and continuity of operational global thermal stress monitoring for coral bleaching
  • NOAA coral reef watch 50 km satellite sea surface temperature-based decision support system for coral bleaching management
    • NOAA Technical Report NESDIS 143
      Liu, G., J.L. Rauenzahn, S.F. Heron, C.M. Eakin, W.J. Skirving, T.R.L. Christensen, A.E. Strong, J. Li (2013). NOAA Coral Reef Watch 50 km Satellite Sea Surface Temperature-Based Decision Support System for Coral Bleaching Management. NOAA Technical Report NESDIS 143. NOAA/NESDIS. College Park, MD. 33pp.
Publication Dates
  • publication: 2011-09-07
  • revision: 2018-01-05
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency As needed
Supplemental Information
Coral Reef Watch's (CRW) near-real-time twice-weekly global 50 km (0.5 degrees exactly) satellite coral bleaching thermal stress monitoring products are CRW's heritage operational products and form the core of CRW's first Decision Support System for tropical coral reef management. The products include Sea Surface Temperature (SST), SST Anomaly, Coral Bleaching HotSpot, Degree Heating Week (DHW), and Bleaching Alert Area products. These products are based on NOAA/NESDIS' operational twice-weekly global 50 km nighttime SST Analysis derived from the Advanced Very High Resolution Radiometers (AVHRR) onboard NOAA's Polar-orbiting Operational Environmental Satellites (POES). A set of SST climatologies and coral bleaching SST threshold climatology are used to derive SST anomaly, HotSpot, DHW, and Bleaching Alert Area from SST Analysis.

All products are currently updated twice-weekly every Monday morning (using observations from the previous Thursday through Sunday) and Thursday morning (using observations from the previous Monday through Wednesday), U.S. Eastern Time. Prior to May 3, 2007, the products were updated every Tuesday morning (using observations from the previous Saturday through Monday) and Saturday morning (using observations from the previous Tuesday through Friday), U.S. Eastern Time.

The data are available for use without restriction, but it is required to credit NOAA Coral Reef Watch program for any data use. Recommendations for citing and providing credit are provided at http://coralreefwatch.noaa.gov/satellite/docs/recommendations_crw_citation.php. Users are referred to the footer section of Coral Reef Watch's website (http://coralreefwatch.noaa.gov/) for disclaimers, policies, notices pertaining to the use of the data.

Data layers included in the data files:
Data Layer; Definition; Type; Dimensions (RxC)
CRW_SST; Twice-weekly global 50km satellite nighttime sea surface temperature; int16; 331x720
CRW_SSTANOMALY; Twice-weekly global 50km satellite nighttime sea surface temperature anomaly; int16; 331x720
CRW_HOTSPOT; Twice-weekly global 50km satellite coral bleaching HotSpot; int16; 331x720
CRW_DHW; Twice-weekly global 50km satellite coral bleaching Degree Heating Week; int16; 331x720
CRW_BAA; Twice-weekly global 50km satellite Bleaching Alert Area; int16; 331x720
surface_flag; Pixel characteristics flag array; uint8; 331x720

Individual SST, and SST Anomaly, HotSpot, DHW, and BAA HDF files contain two data layers including the corresponding data layer named in the table above (CRW_SST, CRW_SSTANOMALY, CRW_HOTSPOT, CRW_DHW, and CRW_BAA) and a surface_flag layer. Each of these files also contains an 8-bit raster image of the corresponding geophysical data layer contained in the file. The dimension of each image is 720 columns by 411 rows. Each image displays a data layer in its pre-defined color scale and the color legend is shown on each image. Corresponding color palette is attached on each image and extractable from the HDF file. An all-in-one file is also available and contains all the data layers, except for the CRW_BAA data layer, listed in the table and their raster images with color palettes.

All these data files are in HDF format, containing internally all the necessary information to understand and to properly use the data.

Liu, G., J.L. Rauenzahn, S.F. Heron, C.M. Eakin, W.J. Skirving, T.R.L. Christensen, A.E. Strong, J. Li (2013). NOAA Coral Reef Watch 50 km Satellite Sea Surface Temperature-Based Decision Support System for Coral Bleaching Management. NOAA Technical Report NESDIS 143. NOAA/NESDIS. College Park, MD. 33pp.
Strong, A.E., F. Arzayus, W. Skirving, and S.F. Heron. Identifying coral bleaching remotely via Coral Reef Watch - improved integration and implications for climate change. Chapter 9 in Coral Reefs and Climate Change: Science and Management, J.T. Phinney, O. Hoegh-Guldberg, J. Kleypas, W. Skirving, and A.E. Strong (Co-Eds), American Geophysical Union, 2006.
Liu G., A.E. Strong, W. Skirving, and L.F. Arzayus, 2006. Overview of NOAA coral reef watch program's near-real time satellite global coral bleaching monitoring activities. Proc 10th Int Coral Reef Symp., Okinawa, Japan, 2004. 1:1783-1793.
Skirving, W.J., A.E. Strong, G. Liu, C. Liu, F. Arzayus, J. Sapper, and E. Bayler. Extreme events and perturbations of coastal ecosystems: Sea surface temperature change and coral bleaching. Chapter 2 in Remote Sensing of Aquatic Coastal Ecosystem Processes, L.L. Richardson and E.F. LeDrew (Co-Eds), Kluwer publishers. January, 2006.
Liu, G., A.E. Strong and W. Skirving (2003). Remote Sensing of Sea Surface Temperatures during 2002 Barrier Reef Coral Bleaching. EOS 84(15): 137.
Liu G., J.E. Meyer, I.C. Guch, and M.A. Toscano, 2001. NOAA's satellite coral reef bleaching early warning products aimed at local reef sites around the globe. Reef Encounter, 30: 10-13.
Goreau, T.J. and R. Hayes, 1994. Coral Bleaching and Ocean "Hot Spots." Ambio, 23:176-180.

A complete list of references is available at
http://coralreefwatch.noaa.gov/satellite/methodology/methodology.php#reference
http://coralreefwatch.noaa.gov/satellite/publications.php
Purpose The NOAA Coral Reef Watch program seeks to fully utilize space-based sea surface temperature (SST) observations combined with in-situ data to continually monitor for early indications of thermally-induced coral reef bleaching worldwide. A suite of monitoring and predicting products, including this satellite SST Anomaly product, has been developed by CRW as a decision support system to provide critical and timely coral reef environment information to the U.S. and international coral reef communities.
Use Limitations
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • Cite as: DOC/NOAA/NESDIS/STAR/CRW > Coral Reef Watch (2011). NOAA Coral Reef Watch Operational Near-real-time Twice-weekly Global 50 km Satellite Coral Bleaching Thermal Stress Monitoring Product Suite. National Oceanographic Data Center, NOAA. Dataset. [access date]
Cited Authors
  • DOC/NOAA/NESDIS/STAR/CRW > Coral Reef Watch
Contributors
Resource Providers
Points of Contact
Publishers
Acknowledgments
  • Coral Reef Watch relies on the ethics and integrity of the user to ensure that the source of these data and products is appropriately cited and credited. When using these data, credit and courtesy should be given to "NOAA Coral Reef Watch."
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science and Services Keywords
  • EARTH SCIENCE > OCEANS > COASTAL PROCESSES > CORAL REEFS > CORAL BLEACHING
  • EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE
  • EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce
NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS
Platform keywords NODC PLATFORM NAMES THESAURUS Global Change Master Directory (GCMD) Platform Keywords
  • GOES-13 > Geostationary Operational Environmental Satellite 13
  • GOES-15 > Geostationary Operational Environmental Satellite 15
  • METEOSAT-9
  • METOP-B > Meteorological Operational Satellite - B
  • MSG > Meteosat Second Generation
  • MTSAT-2 > The Multi-functional Transport Satellite 2
  • NOAA-14 > National Oceanic & Atmospheric Administration-14
  • NOAA-16 > National Oceanic & Atmospheric Administration-16
  • NOAA-18 > National Oceanic & Atmospheric Administration-18
  • NOAA-19 > National Oceanic & Atmospheric Administration-19
  • SUOMI-NPP > Suomi National Polar-orbiting Partnership
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
  • AVHRR-2 > Advanced Very High Resolution Radiometer-2
  • AVHRR-3 > Advanced Very High Resolution Radiometer-3
  • GOES-13 Imager
  • MTSAT 2 Imager
  • SEVIRI > Spinning Enhanced Visible and Infrared Imager
  • VIIRS > Visible-Infrared Imager-Radiometer Suite
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords
  • GEOGRAPHIC REGION > GLOBAL OCEAN
Project keywords NODC PROJECT NAMES THESAURUS
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: DOC/NOAA/NESDIS/STAR/CRW > Coral Reef Watch (2011). NOAA Coral Reef Watch Operational Near-real-time Twice-weekly Global 50 km Satellite Coral Bleaching Thermal Stress Monitoring Product Suite. National Oceanographic Data Center, NOAA. Dataset. [access date]
Access Constraints
  • NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Fees
  • Digital data may be downloaded from NCEI at no charge in most cases. For custom orders of digital data or to obtain a copy of analog materials, please contact NCEI Information Services for information about current fees.
Lineage information for: series
Processing Steps
  • 2011-09-07T13:13:13 - NCEI Accession 0075815 v1.1 was published.
  • 2011-09-07T14:20:15 - NCEI Accession 0075816 v1.1 was published.
  • 2011-09-07T14:22:14 - NCEI Accession 0075817 v1.1 was published.
  • 2011-09-07T14:25:15 - NCEI Accession 0075818 v1.1 was published.
  • 2011-09-07T14:27:17 - NCEI Accession 0075819 v1.1 was published.
  • 2011-09-07T14:30:19 - NCEI Accession 0075820 v1.1 was published.
  • 2011-09-07T14:32:17 - NCEI Accession 0075821 v1.1 was published.
  • 2011-09-07T14:35:21 - NCEI Accession 0075822 v1.1 was published.
  • 2011-09-07T14:38:18 - NCEI Accession 0075823 v1.1 was published.
  • 2011-09-07T14:40:17 - NCEI Accession 0075824 v1.1 was published.
  • 2011-09-07T15:15:17 - NCEI Accession 0075825 v1.1 was published.
  • 2012-04-16T16:05:20 - NCEI Accession 0088492 v1.1 was published.
  • 2012-04-16T20:06:37 - NCEI Accession 0088492 was revised and v2.2 was published.
  • 2013-01-28T16:34:35 - NCEI Accession 0101762 v1.1 was published.
  • 2016-02-05T19:00:35 - NCEI Accession 0141324 v1.1 was published.
  • 2016-02-08T20:00:08 - NCEI Accession 0142123 v1.1 was published.
  • 2016-02-08T20:06:07 - NCEI Accession 0142124 v1.1 was published.
  • 2017-02-13T13:34:06 - NCEI Accession 0160174 v1.1 was published.
  • 2018-01-05T15:29:04 - NCEI Accession 0169623 v1.1 was published.
Output Datasets
Lineage information for: repository
Processing Steps
  • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Acquisition Information (collection)
Instrument
  • AVHRR-2
  • AVHRR-3
  • GOES Imager
  • MTSAT 2 Imager
  • SEVIRI
  • VIIRS
Platform
  • GOES-13
  • GOES-15
  • Meteosat-9
  • MetOp-B
  • MTSAT-2
  • NOAA-14
  • NOAA-16
  • NOAA-18
  • NOAA-19
  • Suomi NPP
Last Modified: 2018-07-17T16:05:48
For questions about the information on this page, please email: NODC.DataOfficer@noaa.gov