Caused by climate change, marine heat waves have affected aquatic life. Research observes an increase in surface temperature, migration of species and unusual patterns in the ocean.
Whatever happens there means a pressing concern exacerbated by environmental issues.
Scientists use the term blob as a phenomenon showing marine heat waves. According to National Geographic, ocean heat waves are abnormally hot high temperatures that can last for at least five days, weeks or months.
Additionally, oceanographer Hillary Scannell told National Geographic that marine heatwaves are a big concern with increasing frequency and intensity.
Photo by Lukasz Larsson Warzecha/Getty Images
In late 2013, National Geographic said the waters had begun to warm in the Gulf of Alaska. Experts have noticed that sea temperatures have risen by an average of 5 degrees Fahrenheit in just a few months, and in other places by up to 7 Fahrenheit.
In mid-2014, the report added that the increase in surface temperature was affecting the ocean area more than 500 miles across and 300 feet deep.
Moreover, it also damaged the marine animals in the area. Reports show that plankton and krill numbers have declined, starving sea lions and many seabirds have died. This is one of the many effects of climate on the food chain.
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As a result, National Geographic said a group of 15 ocean experts met in Perth following a warming event from 2010 to 2011. It says waters in western Australia reached 11 degrees Fahrenheit, causing concern for scientists resulting in the death of huge swathes. and animals.
National Geographic explained that the growing study underscores growing marine heat wave concerns.
According to Eric Oliver of Dalhousie University in Canada, the term marine heat wave was first used in 2010 and 2011. He added that he could no longer keep up with many articles on marine heat wave.
Reports show that countries affected by marine heat waves:
- New Zealand in 2021 and 2022 was hit with the highest ocean temperatures in the country, affecting millions of sponges.
- IN 2016, Chile experienced a sea heat wave that caused devastating algal blooms for fish farms.
The Woods Hole Oceanographic Institution said the oceans have warmed about 1.7 Fahrenheit since 1901. She explained that the ocean absorbs 90% of the excess heat added to the atmosphere and is exacerbated by burning fossil fuels and other environmental problems.
Warming oceans can affect the marine environment. Additionally, rising global temperatures may melt the glacier below, causing sea levels to rise.
NOAA Fisheries in the Rise and Fall of the blob explained that their team noticed that:
- Fish expected to spawn in mid-summer have started to appear in winter off Oregon;
- Salmon migration has changed;
- Subtropical species have appeared thousands of kilometers from their typical range.
- Scientists have concluded that warming waters are causing a new migration of turtles from the central Pacific.
The study noted that the drop warmed the waters as worse or more powerful than El Nino.
Related article: Six climate tipping points that could trigger a climate emergency
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