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New Climate Research From a Year-Long Arctic Expedition Raises an Ozone Alarm in the High North

Inside Climate News

By Bob Berwyn After sampling the atmosphere above the Arctic for more than a year during the MOSAiC research voyage , climate scientists say the ozone layer, Earth’s protection against intense ultraviolet radiation, is at risk, despite the progress made in protecting atmospheric ozone by the 1987 Montreal Protocol , the global treaty that banned ozone-harming (..)

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What Exactly is Ozone? The Good, the Bad & the Ugly

Breezometer

Our ozone layer serves as a lifesaving UV barrier for planet earth, functioning to absorb most of the sun’s ultraviolet radiation. At the same time, ground-level ozone pollution is extremely harmful to human health. Good Ozone’: Our Essential Sun Shield. How is Ozone Created?

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CMIP6: Not-so-sudden stratospheric cooling

Real Climate

The dominant factors are changes in CO2 (a cooling), ozone depletion (a cooling), warming from big volcanoes, and oscillations related to the solar cycle. That means the greenhouse substances are basically just CO2 and ozone, and they absorb in quite different parts of the spectrum. But why is the stratosphere increasingly chill?

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Scientists said the ozone hole was recovering. That good news was premature, one study claims

Environmental News Bits

The recovery of the ozone layer — which sits miles above the Earth and protects the planet from ultraviolet radiation — has been celebrated as one of the world’s greatest environmental achievements.

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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).

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Ozone Hole Would Have Killed Plants and Raised Global Temperatures

Scientific American

Without the Montreal Protocol, more solar radiation would have destroyed plants, lessening the CO2 they absorb. -- Read more on ScientificAmerican.com.

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The definitive CO2/CH4 comparison post

Real Climate

Methane emissions have a feedback on its own lifetime, serve as an ozone precursor, and reduce the production of sulphate and nitrate aerosols (and consequently indirect cloud-aerosol effects), all of which amplify its net warming effect to about 1.2 ppm, a factor of more than 200 smaller). W/m 2 for CH 4. References. Etminan, G. Myhre, E.J.