Group items tagged

policy statement regarding research on geoengineerin in the US (in force from July 2009-July 2012)

looking forward to your recommendations how we can get into it quickly :-)

video of presentation and discussion about scienctific background of geoengineering in course of the series of AEI conferences

Geoengineering could be very dangerous.

I am certain that this is just the first in a series - highlighting the big dilemma of geo engineering: it's so cheap to do ....

On the same subject ...

The researchers used a global climate model to show that if an extreme emissions pathway -- RCP8.5 -- is followed up until 2035, allowing temperatures to rise 1°C above the 1970-1999 mean, and then SRM (Solar Radiation Management) is implemented for 25 years and suddenly stopped, global temperatures could increase by 4°C in the following decades.

Nice quantitative study. They treat the problem within the full uncertainty range of climate sensitivity parameter (much uncertain), very complete. However, at SRM ceasing, after an initial positive spike of Radiative Forcing, the rate of warming seems to return to rates predicted for the non-geoengineering case: "The 20-year temperature trends following SRM cessation are 0.2−0.6 °C/decade for the range of climate sensitivities (figure 5), comparable to those trends that occur under the RCP8.5 scenario without any SRM." I am actually working on a similar idea for deliberate Mars terraforming: aiming to cool the planet down before we introduce a positive Temperature raising feedback with greenhouse gases, maybe could be more efficient than warming itself.

Short article on the AMS policy statement on geoengineering in US (see also the other bookmark I posted)

very interesting indeed ... we are almost too late :-)

very interesting article indeed - good basis for our own assessment! check especially this part: "At an international meeting of climate scientists last month in Copenhagen, 15 talks dealt with different aspects of geoengineering." do you have the references?

I found the abstracts for this meeting online (http://www.iop.org/EJ/toc/1755-1315/6/45). I'm also looking for the papers which relate to the different talks. These could be helpfull too.

detailed version of article "Time To Lift The Geoengineering Taboo, Experts Urge" with brief description of proposals, their cost and expected climate benefits

Should we organise a workshop PDC like on this? Or a call for ideas?

Nice modelling research on geo engineering options ...

Useful journal for the upcoming Earth Systems Science. For geoengineering, check out this: http://www.atmos-chem-phys-discuss.net/9/2559/2009/acpd-9-2559-2009.pdf (currently first on the list of this bookmark)

New method for geoengineering? New insight into methanotrophs, bacteria that can oxidise methane, may help us develop an array of biotechnological applications that exploit methane and protect our environment from this potent greenhouse gas. Publishing in Nature, scientists led by Newcastle University have provided new understanding of how methanotrophs are able to use large quantities of copper for methane oxidation.

An hypothesis for explaining missing shoreline traces of ancient water ocean on mars: Some 3.4 billion years ago, giant meteoroids slammed into a frigid ocean covering Mars's northern hemisphere. The impacts kicked up enormous waves that raced across the water and swamped the shoreline, research suggests. On the scale of planetary catastrophes, such tsunamis would have dwarfed most Earthly ones.