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CMIP6: Not-so-sudden stratospheric cooling

Real Climate

As predicted in 1967 by Manabe and Wetherald , the stratosphere has been cooling. The dominant factors are changes in CO2 (a cooling), ozone depletion (a cooling), warming from big volcanoes, and oscillations related to the solar cycle. So the net effect is less absorption and more emittence, and thus they give a cooling.

Cooling 246
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‘Janus textile’ could keep you warm and cool you down

Physics World

Researchers in Belgium have unveiled the design for a fabric that could keep a person warm when worn one way, while cooling them down if worn inside out. However, the other 50% of heat loss at rest occurs via infrared radiation from skin and from the surfaces of clothing. The effect of this is to cool the wearer in warm environments.

Cooling 137
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Entangling a live tardigrade, radiation warning on anti-5G accessories

Physics World

According to a preprint on the arXiv server, the team cooled a tardigrade to below 10 mK and then used it as the dielectric in a capacitor that itself was part of a superconducting transmon qubit. Tardigrades are much more resilient than humans when it comes to exposure to ionizing radiation. One of the items is designed for children.

Radiation 145
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Sunlight-Dimming Climate Schemes Need Worldwide Oversight

Scientific American

As the climate crisis intensifies, experiments to “cool the planet” by reflecting solar radiation proliferate. Without proper global and national regulation, they will worsen the crisis

Radiation 127
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LIGO mirrors have been cooled to near their quantum ground state

Physics World

Now, an international team of researchers has cooled the interferometers’ large mirrors close to their quantum ground state. By cooling objects massive enough to potentially feel a detectable gravitational force, the researchers hope to open a new window into gravity’s possible effects on quantum mechanics. Very cool”. “I

Cooling 145
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New cooling ceramic can enhance energy efficiency for the construction sector and help combat global warming

Environmental News Bits

Researchers have made a significant breakthrough in developing a passive radiative cooling (PRC) material. The material, known as cooling ceramic, has achieved high-performance optical properties for energy-free and refrigerant-free cooling generation. Read the full story from City University of Hong Kong.

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Science denial is still an issue ahead of COP28

Real Climate

In an unchanging climate, the random fluctuations would lead to warming in some parts of the world and cooling in others. In a world with just random local fluctuations but no climate change, about half the weather stations would show a (more or less significant) warming, the other half a cooling. It’s not hard to understand.