Transition Brockville archive

Tag : Ocean circulation (6)

The oceans’ circulation hasn’t been this sluggish in 1,000 years

Washington Post / Chris Mooney / 11 April 2018

The Atlantic Ocean circulation that carries warmth into the Northern Hemisphere’s high latitudes is slowing down because of climate change, a team of scientists asserted Wednesday, suggesting one of the most feared consequences is already coming to pass.

The Atlantic meridional overturning circulation has declined in strength by 15 percent since the mid-20th century to a “new record low,” the scientists conclude in a peer-reviewed study published in the journal Nature. That’s a decrease of 3 million cubic meters of water per second, the equivalent of nearly 15 Amazon rivers.

[ FULL ARTICLE ]

Global warming will trigger steep decline in ocean fisheries

Digital Journal / Karen Graham / 09 March 2018

The effects of climate change on the world’s oceans will trigger a dramatic decline in global fisheries output if the current warming trend is left unchecked, a new study has suggested.

Researchers from the University of California, Irvine are projecting increases in greenhouse gas emissions could suppress marine biological productivity for a thousand years or more in a study published in the journal Science on May 9, 2018.

The study points out that most studies on climate change risks focus on what will happen by 2100, and overlook extra “catastrophic effects” such as the effect global warming will have on ocean life for hundreds of years to come.

[ FULL ARTICLE ]

Record cold ‘blob’ in N. Atlantic: Sign of future climate woes?

Common Dreams / Sarah Lazare / 25 September 2015

noaa_0Some scientists are saying that a record-setting area of cold water in the North Atlantic, revealed by recent National Oceanic and Atmospheric Administration (NOAA) data, could be a sign that climate change is causing the ocean current to weaken.

This trend could have dramatic consequences, including the alteration of temperatures on the European and North American continents.

Washington Post reporter Chris Mooney highlighted the thesis on Thursday, pointing out a cold blob in the ocean south of Greenland and Iceland. While NOAA’s findings that 2015 has so far seen the hottest eight month stretch in recorded history were widely publicized, the North Atlantic cold spot is lesser known. It is seen below in the dark hue denoting “record coldest” temperatures.

[ FULL ARTICLE ]

Five stories seldom told

Radio Ecoshock / 22 April 2015

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What is really going on? What are the big stories the media leaves out, while they fill the news with quirky headlines and fluff? All over the world, from pole to pole, the Earth and her species are going through big changes. The atmosphere is trapping heat into the oceans, air, and land.

This week I’m going to cover five of those big stories, with the help of one of the world’s best risk watchers. He’s author Robert Marston Fanney, and his launching pad is called Robert Scribbler’s Blog.

[ SOURCE ]

Melting ice slows down ocean circulation

Living on Earth / Steve Curwood / 27 March 2015

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The Atlantic Conveyor Belt is a system of ocean currents that bring warm temperatures and important nutrients to the waters off of East Coast America and Western Europe. But as global warming melts ice in Greenland, the influx of fresh water seems to be slowing the northward drift down and could shut the system down altogether. Climate scientist Michael Mann tells host Steve Curwood that could spell trouble for the ocean and the economy.

[ TRANSCRIPT ]

Gulf Stream is slowing down faster than ever, scientists say

The Independent / Steve Connor / 23 March 2015

17-Britain-Weather-GetThe Gulf Stream that helps to keep Britain from freezing over in winter is slowing down faster now than at any time in the past millennium according to a study suggesting that major changes are taking place to the ocean currents of the North Atlantic.

Scientists believe that the huge volumes of freshwater flowing into the North Atlantic from the rapidly melting ice cap of Greenland have slowed down the ocean “engine” that drives the Gulf Stream from the Caribbean towards north-west Europe, bringing heat equivalent to the output of a million power stations.

[ FULL ARTICLE ]

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