Satellite Images Shows Harmful Algal Bloom Expands in Lake Erie

A bloom of harmful cyanobacteria has grown in Lake Erie’s western basin, according to the latest bulletin released today by the National Oceanic and Atmospheric Administration. The bloom is concentrated in Maumee Bay, while a separate and smaller bloom has appeared in Sandusky Bay…

As part of our ongoing coverage of toxic algal blooms in the Great Lakes, which shut down a public water supply system for the first time last fall, we are creating a space to bring together a range of available maps and data to track the progression of these blooms.

If you know of a great data source, or would like to see something included in our Algae Dashboard, please comment below, share your ideas on Twitter @circleofblue , or send me an e-mail at [email protected] You can also share your photos of the algal blooms on Circle of Blue’s Instagram account by using #GLalgae #circleofblue.

Lake Erie Harmful Algal Bloom

The satellite images below show the current bloom intensity and forecasts of how it may evolve in the next few days.

Image courtesy of NOAA Modis Aqua Cyanobacterial Index, July 31. Grey indicates clouds or missing data, while cooler colors indicate low concentrations and warmer colors indicate high concentrations. Click image to enlarge.
Image courtesy of NOAA
Modis Aqua Cyanobacterial Index, July 31. Grey indicates clouds or missing data, while cooler colors indicate low concentrations and warmer colors indicate high concentrations. Click image to enlarge.
Image courtesy of NOAA Forecast position of bloom for August 4 using GLCFS modeled currents to move the bloom from the July 31 image. Click image to enlarge.
Image courtesy of NOAA
Forecast position of bloom for August 4 using GLCFS modeled currents to move the bloom from the July 31 image. Click image to enlarge.

Lake Erie Water Temperature

Information about water temperature, which can influence algal blooms, is available from both the NOAA bulletin and the Great Lakes Observing System — a network that pulls near real-time data from various sources in the Great Lakes Basin.

Image courtesy of GLOS Surface water temperatures as of July 24.
Image courtesy of GLOS
Surface water temperatures as of July 24.

Lake Erie Chlorophyll Concentration

GLOS also publishes remote sensing images of chlorophyll concentrations. Chlorophyll is found in algae, but not all forms of algae are harmful.

Image courtesy of GLOS Chlorophyll concentrations as of July 21. Click image to enlarge.
Image courtesy of GLOS
Chlorophyll concentrations as of July 21. Click image to enlarge.

 

Access the GLOS data portal here.

 

View original article at: Harmful Algal Bloom Expands in Lake Erie

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