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Eops 2011 04_27


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Eyes Over Puget Sound (EOPS) is a news report, and is made available within two days of observation.

We inform on current surface conditions in Puget Sound and links several scales of observation together. The report contains condition summaries, personal flight observations, aerial photographs, en route ferry data, satellite images, and mooring data collected by the Marine Monitoring Unit at Ecology.

Ecology's Marine Monitoring Unit conducts several marine observations with a sampling frequency of minutes to 1 month. We use our routine commute flight between Kenmore Airbase and Olympia to document current marine water conditions by camera and supplement the information with satellite images and en route ferry data between Seattle WA and Victoria BC. This program is an example to optimize monitoring resources. You may subscribe or unsubscribe to the Eyes Over Puget Sound email listserv by going to this link:

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Eops 2011 04_27

  1. 1. Eyes Over Puget Sound Surface Conditions Report April 2011Aerial observations on current Puget Sound conditions
  2. 2. Observations between Olympia and Seattle this April edition we highlight:•Satellite and Victoria Clipper data collected en route between Seattle  and Victoria. •Observations supported with mooring measurements made in  Whidbey Basin.Flight information:Due to La Niña and low cloud cover, aerial observations have been challenging this year. We anticipate that visibility will improve for May.
  3. 3. Victoria Clipper detects strong algal bloom in  Main Basin of Puget Sound in April 2011 • Clear skies and fresh/nutrient‐rich water from Whidbey Basin has stimulated a  large algae bloom in central Puget Sound.• Whidbey Basin water is noticeably more turbid and associated with increased  colored dissolved organic matter (CDOM) fluorescence. April 23 Description of Ecology’s Ferry Monitoring Program Additional Information: Brandon Sackmann, PhD (
  4. 4. Possession Sound (a) bloom (   ) and frontal systems (    )  near Mukilteo‐Clinton moving north with the tide (b, c)a) b) c)
  5. 5. Evolution of April 2011 spring bloom in Puget Sound Victoria, BC April 23 Seattle, WADaily snapshots… April 19           20               21                 22                23                 24                 25             26
  6. 6. Satellite helps map spatial extent of spring bloom MERIS Ocean Color – Chlorophyll Victoria Clipper – Chlorophyll Fluorescence April 23 (approx. 10AM) April 23 9AM 5PM • Agreement between V. Clipper chlorophyll  fluorescence and MERIS ocean color data. • Smaller algae blooms seen in Carr, Case,  and Budd Inlets.
  7. 7. MERIS Satellite Ocean Color – Chlorophyll This year’s early blooms • Nutrient‐rich water from  Whidbey Basin often spreads  through central sound. • Fresh water leads to stratified  conditions and encourages algae  blooms. 7 March 19 March 23 April 6 April 17 April
  8. 8. Satellite products used to help assess water quality• Chlorophyll, Maximum Chlorophyll  Index (MCI, sensitive to high algae  concentrations), CDOM Absorption,  and Total Suspended Material  reveal different information 23 April
  9. 9. Ecology  Mooring data April 13‐27, 2010 Possession Sound Oxygen levels >10mg/L  in the surface layer        (0‐ 16m) in Possession  Sound support satellite images showing a strong spring bloom in Whidbey  Basin and Central Basin. Warmer and sunnier conditions on 4/26 give rise to enhanced oxygen  production and algae  growth. rings/MUK01.asp#tab1
  10. 10. Long – Term  Real – Time Monitoring  Mooring  Network Washington State Department  Network  of Ecology’s long‐term marine  monitoring stations Access  Access archived data  archived data at: at: http://www.ecy.wa.http://www.ecy.wa.g gov/programs/eap/ov/apps/eap/marine mar_wat/moorings. wq/mwdataset.asp html