NOAA Coral Reef Watch Operational Daily Near-Real-Time Global 5-km Satellite Coral Bleaching Monitoring Products

Contains a suite of NOAA Coral Reef Watch (CRW) version 3.1 operational global satellite coral bleaching heat stress monitoring products at 5-km resolution produced daily in near real-time, including sea surface temperature (SST), SST anomaly, HotSpot, Degree Heating Week (DHW), and Bleaching Alert Area (BAA). These data are based on CoralTemp Version 1.0, a daily global 5-km sea surface temperature dataset combined from: (1.) NOAA/NESDIS operational near-real-time daily global 5-km geostationary-polar-orbiting (geo-polar) blended night-only SST analysis, (2.) NOAA/NESDIS 2002-2016 reprocessed daily global 5-km geo-polar blended night-only SST analysis, and (3.) United Kingdom Met Office 1985-2002 daily global 5-km night-only SST reanalysis of Operational SST and Sea Ice Analysis (OSTIA). The SST anomaly is the difference of SST compared to daily SST climatology. The coral bleaching HotSpot is a special type of sea surface temperature (SST) anomaly and shows the difference of SST compared to a coral bleaching SST threshold climatology. DHW is the accumulation of Coral Bleaching HotSpots over a period of 12 consecutive weeks. The DHW value at any particular location at any particular time is the summation of the product of HotSpot values which are at least 1 deg C above the bleaching threshold SST and their durations in weeks over the most recent 12-week period. One DHW is equivalent to 1 week of SST at 1 deg C above the threshold or 0.5 week of SST at 2 deg C above the threshold, etc. The units for DHW are deg C-weeks, combining the intensity and duration of heat stress into one single number. Based on research at Coral Reef Watch, when the heat stress reaches 4 deg C-weeks, you can expect to see significant coral bleaching, especially in more sensitive species. When heat stress is 8 deg C-weeks or higher, you would likely see widespread bleaching and mortality from the heat stress. Provides the most recent 3 years of data only; for the full time series, see PacIOOS ERDDAP instead.

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Metadata Date

2024-06-04

Metadata Tags

GCMD Keywords

CF Standard Names

Online Access

ERDDAP (DAP Client Access)

These data are available for access with an ERDDAP client

ERDDAP (DAP Client Access)

These data are available for access with an ERDDAP client

OPeNDAP (DAP Client Access)

These data are available for access with an OPeNDAP client

OGC:WCS (OGC Web Coverage Service)

These data are available for access with an OGC WCS compatible client

OGC:WMS (OGC Web Map Service)

These data are available for access with an OGC WMS compatible client
Distribution Formats
  • OPeNDAP (Version: DAP/2.0 )
Distributor NOAA Coral Reef Watch (CRW)
Point of Contact NOAA Coral Reef Watch (CRW)
coralreefwatch@noaa.gov
Online Resource
Originator NOAA Coral Reef Watch (CRW)
coralreefwatch@noaa.gov
Online Resource
Publisher Pacific Islands Ocean Observing System (PacIOOS)
info@pacioos.org
Online Resource
Dataset Point of Contact Pacific Islands Ocean Observing System (PacIOOS)
info@pacioos.org
General Documentation

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Associated Documentation NOAA Coral Reef Watch (CRW)
Date(s) creation: 2017-05-19
issued: 2017-05-19
revision: 2020-06-04
creation: 2017-05-19
issued: 2017-05-19
revision: 2020-06-04
creation: 2017-05-19
issued: 2017-05-19
revision: 2020-06-04
creation: 2017-05-19
issued: 2017-05-19
revision: 2020-06-04
creation: 2017-05-19
issued: 2017-05-19
revision: 2020-06-04
Edition 3.1
Purpose PacIOOS provides timely, reliable, and accurate ocean information to support a safe, clean, productive ocean and resilient coastal zone in the U.S. Pacific Islands region.
Use Limitations OSTIA Usage Statement (1985-2002): IMPORTANT usage statement. Unless otherwise agreed in writing, these data may be used for pure academic research only, with no commercial or other application and all usage must meet the Met Office Standard Terms and Conditions, which may be found here: http://www.metoffice.gov.uk/corporate/legal/tandc.html. The data may be used for a maximum period of 5 years. Reproduction of the data is permitted provided the following copyright statement is included: (C) Crown Copyright 2010, published by the Met Office. You must submit a completed reproduction license application form (here http://www.metoffice.gov.uk/corporate/legal/repro_licence.html) before using the data. This only needs to be completed once for each user. WARNING Some applications are unable to properly handle signed byte values. If values are encountered > 127, please subtract 256 from this reported value. GHRSST statement (2002-present): GHRSST protocol describes data use as free and open. Coral Reef Watch program statement: The data produced by Coral Reef Watch are available for use without restriction, but Coral Reef Watch relies on the ethics and integrity of the user to ensure that the source of the data and products is appropriately cited and credited. When using these data and products, credit and courtesy should be given to NOAA Coral Reef Watch. Please include the appropriate DOI associated with this dataset in the citation. For more information, visit the NOAA Coral Reef Watch website: https://coralreefwatch.noaa.gov. Recommendations for citing and providing credit are provided at https://coralreefwatch.noaa.gov/satellite/docs/recommendations_crw_citation.php. Users are referred to the footer section of Coral Reef Watch's website (https://coralreefwatch.noaa.gov/index.php) for disclaimers, policies, notices pertaining to the use of the data.
Time Period 2021-06-03T12:00:00Z to 2024-06-02T12:00:00Z
Spatial Bounding Box Coordinates N: 89.975° S: -89.975° E: 179.97501° W: -179.97501°
Theme keywords GCMD Science Keywords
  • Earth Science > Oceans > Coastal Processes > Coral Reefs
  • Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature

GCMD Platform Keywords
  • Earth Observation Satellites > GOES (Geostationary Operational Environmental Satellite) > GOES-13
  • Earth Observation Satellites > GOES (Geostationary Operational Environmental Satellite) > GOES-15
  • Earth Observation Satellites > Himawari > Himawari Meteorological Satellites
  • Earth Observation Satellites > Joint Polar Satellite System (JPSS) > SUOMI-NPP > Suomi National Polar-orbiting Partnership
  • Earth Observation Satellites > METEOSAT > METEOSAT-8
  • Earth Observation Satellites > METEOSAT > METEOSAT-11
  • Earth Observation Satellites > METOP > METOP-B > Meteorological Operational Satellite - B

GCMD Instrument Keywords
  • Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Imaging Spectrometers/Radiometers > AHI > Advanced Himawari Imager
  • Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Imaging Spectrometers/Radiometers > AVHRR > Advanced Very High Resolution Radiometer
  • Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Imaging Spectrometers/Radiometers > GOES-13 Imager > Geostationary Operational Environmental Satellite 13-Imager
  • Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Imaging Spectrometers/Radiometers > GOES-15 Imager > Geostationary Operational Environmental Satellite 15-Imager
  • Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Imaging Spectrometers/Radiometers > SEVIRI > Spinning Enhanced Visible and Infrared Imager
  • Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Imaging Spectrometers/Radiometers > VIIRS > Visible-Infrared Imager-Radiometer Suite

CF Standard Name Table v39
  • sea_ice_area_fraction
  • sea_surface_temperature
  • latitude
  • longitude
  • time
Data Center keywords GCMD Data Center Keywords
  • PacIOOS > Pacific Islands Ocean Observing System
Place keywords GCMD Location Keywords
  • Geographic Region > Global Ocean
Project keywords GCMD Project Keywords
  • NOAA Coral Reef Watch (CRW)
Use Constraints OSTIA Usage Statement (1985-2002): IMPORTANT usage statement. Unless otherwise agreed in writing, these data may be used for pure academic research only, with no commercial or other application and all usage must meet the Met Office Standard Terms and Conditions, which may be found here: http://www.metoffice.gov.uk/corporate/legal/tandc.html. The data may be used for a maximum period of 5 years. Reproduction of the data is permitted provided the following copyright statement is included: (C) Crown Copyright 2010, published by the Met Office. You must submit a completed reproduction license application form (here http://www.metoffice.gov.uk/corporate/legal/repro_licence.html) before using the data. This only needs to be completed once for each user. WARNING Some applications are unable to properly handle signed byte values. If values are encountered > 127, please subtract 256 from this reported value. GHRSST statement (2002-present): GHRSST protocol describes data use as free and open. Coral Reef Watch program statement: The data produced by Coral Reef Watch are available for use without restriction, but Coral Reef Watch relies on the ethics and integrity of the user to ensure that the source of the data and products is appropriately cited and credited. When using these data and products, credit and courtesy should be given to NOAA Coral Reef Watch. Please include the appropriate DOI associated with this dataset in the citation. For more information, visit the NOAA Coral Reef Watch website: https://coralreefwatch.noaa.gov. Recommendations for citing and providing credit are provided at https://coralreefwatch.noaa.gov/satellite/docs/recommendations_crw_citation.php. Users are referred to the footer section of Coral Reef Watch's website (https://coralreefwatch.noaa.gov/index.php) for disclaimers, policies, notices pertaining to the use of the data.
Lineage Statement 2017-05-19T00:00:00Z Data obtained from NOAA Coral Reef Watch and re-distributed via THREDDS Data Server (TDS) at PacIOOS to provide temporal aggregation and distribution through NetCDF/OPeNDAP utilities like ncWMS and ERDDAP. 2018-11-26T00:00:00Z Upgraded dataset from v3.0 to v3.1, which also extends start date from 2013-06-03 back to 1985-04-01. 2020-06-04T00:00:00Z Although still v3.1, CRW implemented some changes to metadata and ice masks for transition to NOAA/NESDIS operational products. 2024-01-12T22:35:00Z Due to ongoing difficulty serving the entire time series aggregation through TDS, we are now limiting access to the latest 3 years. For the full time series, see PacIOOS ERDDAP instead. 2024-03-20T21:18:00Z Full time series aggregation now restored in TDS; no longer limited to latest data. 2024-04-04T07:21:00Z Due to ongoing difficulty serving the entire time series aggregation through TDS, we are now limiting access to the latest 3 years. For the full time series, see PacIOOS ERDDAP instead.
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