Warming Oceans

Marine Heat Waves Now More Frequent

The study, published Monday in the journal Nature Climate Change, looked at the impact of marine heat waves on the diversity of life in the ocean. From coral reefs to kelp forests to sea grass beds, researchers found that these heat waves were destroying the framework of many ocean ecosystems.

A Shocking 40% Increase in Ocean Warming

As the oceans continue to heat up, those effects will become more catastrophic, scientists say. Rainier, more powerful storms like Hurricane Harvey in 2017 and Hurricane Florence in 2018 will become more common, and coastlines around the world will flood more frequently. Coral reefs, whose fish populations are sources of food for hundreds of millions of people, will come under increasing stress; a fifth of all corals have already died in the past three years.

Marine Heat Waves Impact Marine Life

Between 1982 and 2016, the number of “marine heat waves” roughly doubled, and likely will become more common and intense as the planet warms, a study released Wednesday found. Prolonged periods of extreme heat in the oceans can damage kelp forests and coral reefs, and harm fish and other marine life.

“Lowest numbers of cod on record”

“Across the United States, changes in our climate and our oceans are having very real and profound effects on communities, businesses, and the natural resources we depend on — including our economically valuable fisheries …” declared a NOAA Fisheries webpage updated in June. “Understanding these changes and measuring their impacts is an important part of NOAA Fisheries’ mission.”