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Why the World Needs a New UN Study on the Effects of Nuclear War

Union of Concerned Scientists

New scientific information has yielded insights, including updates to our understanding of, and ability to model, the atmosphere, and the studies of the long-term effects of radiation on affected populations have yielded new information. What role should scientists play in nuclear weapons policy?

Radiation 331
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Why Were 2023 and 2024 So Hot?

Union of Concerned Scientists

Scientists are sounding the alarm because this warming is shockingly bigbigger than what we would have expected given the long-term warming trend from fossil fuel-caused climate change. Albedo is the total reflection of incoming solar radiation by Earth. But why were 2023 and 2024 so warm? What is albedo?

2024 289
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How Do ‘Future Climate Scenarios’ Shape Climate Science and Inform Policy? 

Union of Concerned Scientists

The IPCC compiles scientific insights on climate change, informing policymakers and the public about risks and possible actions. In essence, combined with climate models, they provide a way to envision the consequences of different actions or inactions. What Are Future Climate Scenarios?

Radiation 193
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Why Climate Scientists Are Sounding the Alarm on the Ocean Circulation System AMOC

Union of Concerned Scientists

Last month, 44 climate scientists from 15 countries wrote an open letter to the Nordic Council of Ministers highlighting the risk of a potential collapse of the Atlantic Meridional Overturning Circulation (AMOC), a critical ocean current system in the Atlantic Ocean. But what exactly would cause the AMOC to collapse?

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What Is a Climate Model and How Does It Work?

Union of Concerned Scientists

In my blog on the potential collapse of the Atlantic Meridional Overturning Circulation (AMOC), which is the conveyor belt of water moving in the Atlantic Ocean, I discussed how regions around the equator are warmer than the poles due to different amounts of incoming solar radiation, that is, energy from the sun. What do I mean by this?

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New misguided interpretations of the greenhouse effect from William Kininmonth

Real Climate

I have a feeling that we are seeing the start of a new wave of climate change denial and misrepresentation of science. What he hasn’t understood is that the IPCC merely assesses published climate research, much of which is conducted with global climate models that indeed treat the earth as a sphere.

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A CERES of fortunate events…

Real Climate

That is long enough to see that there has been a noticeable trend in the Earth’s Energy Imbalance (EEI), mostly driven by a reduction in the solar radiation reflected by the planet, while the outgoing long wave radiation does not appear to contribute much. A paper last year (Goode et al., The total radiative forcing is.

Radiation 360