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Each of the 11 Regional Associations design, maintain and operate regional coastal observing systems and develop information products for their users.

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Marine heat waves — persistent and unusual warm temperatures — have once again been in the news this summer and fall, as a mass of warmer-than usual water stretched roughly from Alaska south to California. Observing systems provide long-term data and context for understanding and detecting changes like this in the marine and Great Lakes environments. 



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