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New study suggests the Atlantic overturning circulation AMOC “is on tipping course”

Real Climate

The paper results from a major computational effort, based on running a state-of-the-art climate model (the CESM model with horizontal resolution 1° for the ocean/sea ice and 2° for the atmosphere/land component) for 4,400 model years. Nature 2018. Figure adapted from Caesar et al.,

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The water south of Greenland has been cooling, so what causes that?

Real Climate

Sea surface temperature trend 1993 – 2018, from European Atlas of the Seas. Here we start by taking the Greenland mass loss rate into the ocean, times the temperature difference between the meltwater and the water it replaces. For the part entering the ocean as ice, we must also consider that to melt ice requires energy.

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Deciphering the ‘SPM AR6 WG1’ code

Real Climate

Another clue indicating a shortcoming is if you look at the atmospheric CO 2 -concentrations over time to see how much impact the IPCC reports have had on the real policy-makers in the world (Figure below). The cause of our changing climate is the increase in atmospheric greenhouse gas concentrations that we have released into the air.

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Finding Light in Dark Places: Specific Obligations for Climate Change and Ocean Acidification Mitigation

Law Columbia

The Tribunal acted both boldly and conservatively by interpreting UNCLOS as an independent source of international legally binding obligations to address climate change and ocean acidification. 29, citing the Vienna Convention on the Law of Treaties, article 31).

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Five Things to Know About Drought in the American West

Circle of Blue

A thirsty atmosphere evaporates or sublimates its share. With increasing temperatures, “we’re seeing places that do have drought, the intensification is more rapid,” says Roger Pulwarty, a senior scientist in the physical sciences laboratory at the National Oceanic and Atmospheric Administration. Clunky, perhaps.

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Analysis: Moving the dial on ocean-based CO2 removal

A Greener Life

Two reports published in the US look seriously at the practicalities and responsibilities of altering the ocean to tackle the climate crisis. It’s now widely acknowledged that to avoid catastrophic climate change we’ll need to physically remove CO2 from the atmosphere. The ocean as a carbon sink.

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What’s Up With Water – June 14, 2021

Circle of Blue

Industrial sites are likely the source of PFAS in the atmosphere. Though essential to ocean life, they produce plenty of drawbacks, too. Global aquaculture production increased 16-fold between 1985 and 2018, which is the study’s period of analysis. This week Circle of Blue reports on a toxic threat to the world’s coastlines.

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