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Chesapeake Bay News

Jun
14
2011

Scientists predict moderate to poor oxygen levels in Chesapeake Bay

The Chesapeake Bay is expected to have moderate to poor dissolved oxygen conditions during the early part of the summer, according to a team of scientists with Chesapeake Eco-Check.

The early summer dissolved oxygen forecast (called an “anoxia forecast”) is based on nitrogen loads to the Bay during winter and spring, as well as high river flow in May due to heavy rainfall. According to scientists, the Bay’s 2011 low-oxygen area – commonly called the “dead zone” – could be the fourth-largest since 1985.

The annual summer ecological forecast uses data such as nitrogen loads, wind direction and sea level to predict dissolved oxygen levels in the Bay’s mainstem. The forecast is split into early summer (June to mid-July) and late summer (mid-July to September) because scientists have observed a significant change in oxygen levels following early summer wind events.

The forecast is supported through research at the Chesapeake Bay Program, Johns Hopkins University, Old Dominion University, and the University of Maryland Center for Environmental Science Horn Point Lab.

For more information about the dissolved oxygen forecast, visit Chesapeake Eco-Check’s website.


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