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What is happening in the Atlantic Ocean to the AMOC?

Real Climate

The Atlantic meridional overturning circulation (AMOC) is a large-scale overturning motion of the entire Atlantic, from the Southern Ocean to the high north. We published an early model comparison about this in 2005. The post What is happening in the Atlantic Ocean to the AMOC? Graph by Ruijian Gou. 15 Sverdrup).

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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. Figure adapted from Caesar et al., Nature 2018.

Ocean 364
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WMO: Update on 2023/4 Anomalies

Real Climate

The impacts of East Asian SO 2 emission changes (which have dropped precipitously since ~2005) are noticeable in the global mean trends, but because they have been relatively smooth, the impact on the 2023/4 residuals is small. Merchant, "Reconciling Earths growing energy imbalance with ocean warming", Environmental Research Letters , vol.

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Scientists warn of 'alarming' rise in ocean microplastic pollution

New Scientist

Global data on ocean surface level pollution suggests there are now 2.3 million tonnes of microplastic pollution floating in the world’s seas, with concentrations surging since 2005

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As Soon as Possible

Real Climate

Furthermore, if you squinted, you could perhaps convince yourself that there was a correlation to solar activity – well, at least Soon could ( Soon, 2005) ). If the land data was contaminated by urban heating effects, we wouldn’t see similar warming in the ocean. And which solar reconstruction did he use? Scafetta, R.

2005 351
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The Rise and Fall of the “Atlantic Multidecadal Oscillation”

Real Climate

Two decades ago, in an interview with science journalist Richard Kerr for the journal Science, I coined the term the “Atlantic Multidecadal Oscillation” (AMO) to describe an internal oscillation in the climate system resulting from interactions between North Atlantic ocean currents and wind patterns.

Cooling 269
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The CO2 problem in six easy steps (2022 Update)

Real Climate

The factor that quantifies this effect is called the ‘efficacy’ of the forcing, which for the most part is reasonably close to one, and so doesn’t change the zeroth-order picture (Hansen et al, 2005). This means that climate forcings can be simply added to approximate the net effect. Sherwood, M.J. Annan, K.C. Armour, P.M.

Radiation 352