Notice: CRW's twice-weekly 50 km products will update around 2 pm on Mondays and Thursdays (U.S. Eastern Time) starting from 1 February 2016, using a new 50 km SST analysis. Click here to see details.
50-km Sea Surface Temperature
clickable global map of SSTs
SSTs in Mediterranean and Red Sea SSTs around India SSTs east of Japan SSTs around Hawaii SSTs around Central America SSTs West of Africa SSTs in Mediterranean and Red Sea SSTs around southern Africa SSTs in the southern Indian Ocean SSTs around Australia SSTs in the South Pacific SSTs west of South America SSTs east of Brazil SSTs around southern Africa
Click on the image to zoom in.

Current images: Global | E.Hem. | W.Hem. | Pacific | Caribbean | Coral Triangle

Data Formats Available

images Image Archives
Regional imagery and image archives from OSDPD.
Google Earth Google Earth
All of our satellite data products are available on Google Earth.
Virtual Stations 50-km Virtual Stations
Imagery, graphs, ASCII data, and e-mail alerts for reef pixels around the world.
animations Animations
Data animations and downloadable animated GIF files from OSDPD.
HDF data HDF data files
Raw data in Hierarchical Data Format (HDF), with free NOAA viewing software.

The NOAA Coral Reef Watch (CRW) twice-weekly 50-km Sea Surface Temperature (SST) product shows the nighttime ocean temperature, from the AVHRR sensor on NOAA's polar-orbiting satellites. The SST scale goes from -2 to 34 degrees C. Spatial resolution of the product is one-half degree precisely.

Additional description in the 50-km products tutorial.
Technical details on the methodology page and in Liu et al. 2013.