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Home Vegan News

How Ocean Currents Affect the Climate

admin by admin
March 25, 2023
in Vegan News


Source: Getty Images

Eva Hagan - Author
By Eva Hagan

Mar. 24 2023, Published 4:31 p.m. ET

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Heat travels through ocean currents, which affects climate.

The sun’s warmth is mainly absorbed by ocean waters, like a giant solar panel.

Once it retains this heat, it distributes the heat all around the world. The heat is moved by ocean currents, or mass flows of water that are continuous and directional, moving horizontally and driven by Earth’s rotation (the Coriolis effect), the sun, wind, and differences in water density, per National Geographic.

Current imaging

Source: Getty Images

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According to the NOAA, the system is like a conveyor belt, cycling warm water and precipitation to the poles and cold water to the equator, which in turn keeps temperatures more moderate.

Rough water in Australia

Source: Getty Images

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So when it comes to weather and climate, patterns can be traced back to the ocean currents. The heat that the oceans absorb eventually fuels the air circulation in the atmosphere. This is through evaporation, which changes the humidity and temperature of the air, causing rain, storms, and/or wind — meaning that most rain actually begins somewhere in the ocean.

For example, think about how tropical places near the equator tend to be more humid and rainy because of the amount of heat the ocean is absorbing and constantly releasing into the air.

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According to National Geographic, the entire global current system that involves lower density surface waters and dense deep waters usually fully cycles every 1,000 years, and is key for not only distributing heat, but also nutrients and gases that contribute to weather and climate.

Weather patterns across U.S.

Source: Getty Images

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How climate change affects ocean currents:

In the past few decades, the water currents have increased not only in temperature but also in speed, by an estimated 15 percent, between each decade from 1990 to 2013.

In brief, the ocean warms from top to bottom, which scientists say has led to a “clogged” sensation in the surface layers that are warming more quickly, as per Science.

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So what does this mean? For starters, some scientists believe this will affect migration patterns for many marine species. Aside from this, some speculate the new currents won’t be able to absorb as much heat, meaning more is left to be absorbed in the atmosphere.

Dying Coral

Source: Getty Images

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The ocean is the world’s largest carbon sink.

For countless years, the ocean has existed as a carbon sink, which is something that soaks up more carbon from the atmosphere than it releases, per Earth.org.

The United Nations estimates the ocean has absorbed close to 90 percent of heat generated by emissions. But as the heat continues to increase, the rising temperatures have doubled the frequency of marine heatwaves, causing irreversible loss of marine biodiversity, ice melts, and sea level rise.



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Tags: Big ImpactWeather & Global Warming
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