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Why Were 2023 and 2024 So Hot?

Union of Concerned Scientists

Albedo is the total reflection of incoming solar radiation by Earth. Its a great question, but the warming effect from heat-trapping gases far outweighs the cooling effect from industrial aerosols. Here, low-level cloud cover has decreased drastically, mostly related to an increase in ocean surface temperature. What is albedo?

2024 278
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The AMOC is slowing, it’s stable, it’s slowing, no, yes, …

Real Climate

Of the 24 CMIP6 models, a full 23 underestimate the sea surface cooling in the ‘cold blob’ And most of the CMIP6 models even show a strengthening of the AMOC in the historic period, which past studies have shown to be linked to strong aerosol forcing in many of these models (e.g. So what is this whiplash about?

Ocean 351
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The CO2 problem in six easy steps (2022 Update)

Real Climate

The fact that there is a natural greenhouse effect (that the atmosphere restricts the passage of infra-red (IR) radiation from the Earth’s surface to space) is easily deducible from; i) the mean temperature of the surface (around 15ºC) and, ii) knowing that the planet is normally close to radiative equilibrium. in IPCC TAR).

Radiation 352
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AR6 of the best

Real Climate

Projections of (a) temperature (constrained), (b) Arctic sea ice area (raw CMIP6), (c) ocean pH (constrained), and sea level (d)to 2100, and (e) to 2300 (constrained). and other things worth noting – for instance, the much better and more direct graphics that they have clearly worked on a lot. Figure SPM 8. 1981) which can be seen here.

Sea Level 361
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New journal: Nature 2023?

Real Climate

The mix of warming and cooling effects and different timescales for each, makes calculating the impact hard. a net cooling!). W/m 2 over the ocean (which translates to 0.14 2024) Looked at the impact of Chinese aerosol emission decreases from 2010 to 2020 and saw increases in North Pacific ocean temperatures. Barahona, K.

2023 211
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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. Background.

Cooling 258
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Clauser-ology: Cloudy with a chance of meatballs

Real Climate

However, not only is there an obvious energy imbalance (as seen by the growth of ocean heat content), it’s actually accelerating Loeb et al., He, however, goes seriously off the rails when he estimates the impact of clouds on the radiation budget.