Satellites & Bleaching

50-km Virtual Stations

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Along with the worldwide data, we also focus in on representative coral reef locations around the world. We call these "Virtual Stations": it is like having a temperature sensor in the water next to a reef, but it is completely based on satellite remote sensing measurements. On the NOAA CRW website, we show time-series graphs and data for each Virtual Station. You also can sign up for free automated e-mail alerts (recently upgraded to focus on the 5-km Regional Virtual Stations data -- which is not a part of this tutorial). The automated email alert system will warn you if corals in the reef areas of most concern to you are at risk for bleaching. CRW's heritage, operational 50-km Virtual Stations are updated twice per week; the next-generation 5-km Regional Virtual Stations and the associated 5-km Satellite Bleaching Alert email system are updated daily.

Coral Reef Watch 50-km Virtual Stations map
Locations of our 227 operational 50-km Virtual Stations. Click on the image to go to our 50-km Virtual Stations System web page.

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