IMPORTANT USER ALERT (2 July 2024): This past weekend, a storage server at NOAA's Center for Satellite Applications and Research, which delivers the NOAA Coral Reef Watch data, suffered a hardware failure. The issue is being addressed, and we hope to have the NOAA Coral Reef Watch data back up and running as soon as possible. (1) The most recent data will be made available first; historical data may take time to be restored. (2) If you need specific data that are not yet available, please contact us at coralreefwatch@noaa.gov. (3) If you use code to pull data, please revise your code to use “…/socd/…” in lieu of “…/sod/…” in all relevant web addresses for all future needs. We apologize for any inconvenience this may cause.

Thermal History - Annual Maximum Degree Heating Week (DHW)
(1985-2023)

(Version 3.5, released January 31, 2024)

(Click on a location in the global map to see its regional map below.)
Annual Maximum DHW

Select a year:

Regional Annual Maximum DHW


Thermal History Products:
Home | Stress Frequency | Stress Onset | SST Variability | SST Trend | Climatology | Annual History

Download data (netCDF):
HTTPS site
Stress Frequency (401Mb) | Stress Onset (401Mb) | SST Variability (248Mb) | SST Trend (134Mb)
Climatology (592Mb) | Annual History (7.3Gb)

FTP site
Stress Frequency (401Mb) | Stress Onset (401Mb) | SST Variability (248Mb) | SST Trend (134Mb)
Climatology (592Mb) | Annual History (7.3Gb)

Product Metadata (for the Version 3.1.0 product):   
Web-format Metadata | XML Metadata | Plain Text Metadata


 
Product Description

Annual Maximum Degree Heating Week (DHW): For each year during 1985-2023, at each location, we provide the highest level of accumulated heat stress exposure, measured by Coral Reef Watch's daily global 5km satellite coral bleaching DHW product. Values are derived using the Version 3.1 daily global 5km CoralTemp satellite sea surface temperature (SST) data product.

 

Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map Regional Coral Bleaching Thermal History Map