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Why This Matters: The mixing of ocean layers is crucial to sea life and human life. When ocean layers interact enough, they transfer nutrients and oxygen from upper layers to lower layers, supporting life in both the depths and the shallows. When they don’t, it prevents animals at lower depths from getting enough oxygen to breathe, and it prevents salt from deeper waters from migrating upwards, harming ecosystems and wildlife that humans rely on for food and trade. In addition, currents rely on movement between layers of ocean water; as those layers stabilize, it may threaten shipping routes and travel.The warmer layers are also losing their ability to hold CO2, which experts predict could cause atmospheric CO2 to triple by 2100 and raise the global average temperature by eight degrees Fahrenheit.
Experts have found a direct connection between the warming of the ocean and the increased number and power of hurricanes and storms. Ryan Truchelut, the chief meteorologist at WeatherTiger, said of the onslaught of Atlantic hurricanes in 2020, “The culprit is much warmer than average waters in the western Atlantic, coupled with generally lower than average wind shear in the same area driven by the tilt into La Niña.” Strong storm systems once churned ocean water, bringing cooler water to the surface, weakening storm development. But as historically cool layers grow warmer, that churning could actually empower storms further.
The warming of the ocean and subsequent loss of them as a carbon sink would prove catastrophic to the planet, and it’s only one of the many carbon sinks that could be lost in the near future. Paul Durack, a research scientist at Lawrence Livermore National Laboratory in California, thinks experts may still not know the full scope of ocean warming, saying “I would not be surprised if this study underestimates the observed change.”
by Ashira Morris, ODP Staff Writer In Cispatá on Colombia’s Caribbean coast, scientists have calculated just how much carbon a mangrove forest stores. Up until now, that number has treated mangroves like trees on land — missing more than half of their carbon store in the soil under trees. The calculation in Cispatá estimates the […]
Over the last decade, nearly 91% of the sunflower sea star population has been wiped out, landing the species a “critically endangered” categorization last year. The sea stars, which have 24 arms, are an important part of the underwater food web: they keep kelp forests healthy by feeding on sea urchins.
Why This Matters: Between rising temperatures, overfishing, ocean acidification, among other harms, people have thrown the U.S. West Coast marine ecosystem off the balance.
Video gaming experts say that game design is now shifting towards specific environmental issues. Since games are designed by young people, it is not surprising that eco-based storylines like climate change and ocean exploration are coming into vogue. For example, the BBC Blue Planet II nature documentary inspired a video game called Beyond Blue, in which […]
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