08.10.2018

# Media

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Iron Salt Aerosol Australia Pty Ltd: Iron Salt Aerosol. Copying Mother Nature to Cool the Planet

"Iron Salt Aerosol (ISA) could be the single best way to help stop global warming.  Adding 200,000 tonnes of iron to the air could remove 12 gigatonnes of carbon dioxide and equivalents each year, double the abatement of the whole Paris Accord over the next decade. ISA could be implemented safely, quickly and at low cost, below a dollar a tonne of abated CO2, if we get positive results from field trials."

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08.10.2018

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Environmental Health News: US Senate science advisor talks geoengineering from high in the sky

""There's no international governance body, no national governance body," Talati says, while hovering thousands of feet in the air with pilot Ali Nouri, previously a legislative director for former Minnesota Democrat Sen. Al Franken."

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13.09.2018

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Greenmatch: Aerosols: Why We Must Act Now to Avert a Climate Crisis

"Aerosols are very small particles dispersed in our atmosphere that work in opposition to greenhouse gases. While greenhouse gases trap solar energy and contribute to warming our planet, aerosols typically have more of a competing, cooling effect. In fact, some estimates even suggest that since the 1950s, these aerosol particles have likely counteracted about a third of greenhouse gas-driven global warming."

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13.08.2018

# New Publications

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Hamilton, D. S.; et al. (2018): Reassessment of pre-industrial fire emissions strongly affects anthropogenic aerosol forcing

Hamilton, D. S.; Hantson, S.; Scott, C. E.; Kaplan, J. O.; Pringle, K. J.; Nieradzik, L. P. et al. (2018): Reassessment of pre-industrial fire emissions strongly affects anthropogenic aerosol forcing. In: nature communications 9 (1), S. 3182. DOI: 10.1038/s41467-018-05592-9.

"Uncertainty in pre-industrial natural aerosol emissions is a major component of the overall uncertainty in the radiative forcing of climate. Improved characterisation of natural emissions and their radiative effects can therefore increase the accuracy of global climate model projections. Here we show that revised assumptions about pre-industrial fire activity result in significantly increased aerosol concentrations in the pre-industrial atmosphere."

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10.08.2018

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Berkeley News: Blocking sunlight to cool Earth won’t reduce crop damage from global warming

"Injecting particles into the atmosphere to cool the planet and counter the warming effects of climate change would do nothing to offset the crop damage from rising global temperatures, according to a new analysis by University of California, Berkeley, researchers."

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10.08.2018

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Der Standard: Cooling haze has no effect (German)

German article an CE.

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09.08.2018

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Independent: Major plan to deal with climate change by geoengineering the Earth would not work, scientists reveal

"The Earth could not be changed to save the environment, according to a new paper exploring the possibilities of "geoengineering" the planet to protect us from the worst effects of climate change."

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04.08.2018

# New Publications

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Mueller, B. L.; et al. (2018): Attribution of Arctic sea ice decline from 1953 to 2012 to influences from natural, greenhouse-gas and anthropogenic aerosol forcing

Mueller, B. L.; Gillett, N. P.; Monahan, A. H.; Zwiers, F. W. (2018): Attribution of Arctic sea ice decline from 1953 to 2012 to influences from natural, greenhouse-gas and anthropogenic aerosol forcing. In: J. Climate. DOI: 10.1175/JCLI-D-17-0552.1.

"We show that fingerprints from greenhouse-gas, natural and other anthropogenic forcings are detected in the three observed records of Arctic sea ice extent. Beyond that, our findings indicate that for the 1953 to 2012 period roughly 23% of the greenhouse-gas induced negative sea ice trend has been offset by a weak positive sea ice trend attributable to other anthropogenic forcing. We show that our detection and attribution results remain robust in the presence of emerging non-stationary internal climate variability acting upon sea ice using a perfect model experiment and data from two large ensembles of climate simulations."

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04.08.2018

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The Guardian: Pollution is slowing the melting of Arctic sea ice, for now

"The authors concluded that the combined cooling effect from human aerosols was detected in all three datasets of ice. That means, it didn’t matter whose measurements you used – the effect of aerosol cooling was present."

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30.07.2018

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Red Green and Blue: Six ideas to limit global warming with solar geoengineering (Part 1)

"Scientists agree that cutting global greenhouse emissions as soon as possible will be key to tackling global warming. But, with global emissions still on the rise, some researchers are now calling for more research into measures that could be taken alongside emissions cuts, including – controversially – the use of “solar geoengineering” technologies."

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