[Coral-List] GUAM Potential Bleaching Event - "Heads up"

Gang Liu Gang.Liu at noaa.gov
Tue Aug 26 15:42:31 EDT 2003

Anomalously high sea surface temperatures (SSTs) have been developing
over a large area of the Northwest Pacific Ocean since early July.

The SST at Guam has been creeping up above the summertime maximum
monthly mean SST since mid-July and now is approaching the bleaching

Our Degree Heating Week chart shows that Guam is just outside the area
with accumulated DHW. There is a potential for bleaching at Guam if SST
continues to rise in the area.

Any feedback you can provide is useful: both bleaching or non-bleaching
observations, are welcome.

We, NOAA's Coral Reef Watch Project, are developing an automatated coral
bleaching email warning system. The warning is derived based on our
satellite monitoring using satellite HotSpot and Degree Heating Weeks
algorithms. The email will be sent out to region-relevant recipients for
notification at selected reef sites. The list of region-relevant
recipients and list of selected reef sites are under development. A test
message of bleaching watch for Guam is shown below. Please make
comments/suggestions on this automatated email alert, both the content
and mode of
broadcasting how we might send out these warnings.

**          BLEACHING WATCH  for  Guam

Current thermal stress level at this site:  0 < HotSpot < 1

 Reef site name:           Guam
  -- Pixel latitude:         13.5000
  -- Pixel longitude:        146.000

 Current satellite observations:   8/19/2003 - 8/23/2003
  -- Sea surface temperature          :      30.0000  Deg C
  -- Coral bleaching HotSpot          :     0.700000  Deg C
  -- Bleaching Degree Heating Weeks   :      0.00000  Deg C-week
  -- Maximum Monthly Mean SST at site :      29.3000  Deg C

 For more information please visit Coral Reef Watch's Website:


 Please send the feebback to Alan Strong (Alan.E.Strong at noaa.gov) and/or
Gang Liu (Gang.Liu at noaa.gov)

 Alan E Strong
 Coral Reef Watch Project

 Gang Liu, Ph.D.
 Senior Research Scientist/Oceanographer
 (Decision Systems Technologies, Inc.)
 NOAA Coral Reef Watch Program
 SSMC1, #5307
 1335 East-West Highway
 Silver Spring, MD 20910-3226

 Tel: 301-713-9386 ext 131
 Fax: 301-713-3136
 Email: Gang.Liu at noaa.gov

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