June 2017

07.06.2017

# Media

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Russ George Blog: First ever major UN Oceans Conference is underway though it is about oceans in spin only

"The key goal of the ocean conference blatantly leaves out vital ocean restoration.Someone must speak for the oceans that need our help to restore them to historic health and abundance."

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07.06.2017

# Media

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Experts Past Present Future: Climate Engineering: Recasting Expertise?

"“Climate engineering” is a discursive figure more than a technical term. There is no accepted definition of what exactly counts as climate engineering. Its purpose, however, is thought to be clear: Reducing some of the impacts of climate change. Proposals are commonly grouped into two categories. First, reflecting sunlight away from Earth, for example through the injection of reflective particles into the stratosphere; and second, removing carbon dioxide from the atmosphere, for example through the coupling of bioenergy generation with carbon capture and storage. Some proposals date back to the 1960s, but attention has been rising considerably since the mid-2000s."

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07.06.2017

# New Publications

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Sugiyama, Masahiro; et al. (2017): The Asia-Pacific’s role in the emerging solar geoengineering debate

Sugiyama, Masahiro; Asayama, Shinichiro; Ishii, Atsushi; Kosugi, Takanobu; Moore, John C.; Lin, Jolene et al. (2017): The Asia-Pacific’s role in the emerging solar geoengineering debate. In: Climatic Change 23, S. 189. DOI: 10.1007/s10584-017-1994-0 

"Here, we report the summary of a 2016 workshop on the significance and challenges of international collaboration on climate engineering research with a focus on the Asia-Pacific region. Because of the region’s interest in benefits and risks of climate engineering, there is a potential synergy between impact research on anthropogenic global warming and that on solar radiation management. Local researchers in the region can help make progress toward better understanding of impacts of solar radiation management."

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07.06.2017

# Political Papers

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International Energy Agency (2017): Energy Technology Perspectives 2017

International Energy Agency (2017): Energy Technology Perspectives 2017. Paris.

"Negative emissions, notably in power generation and fuel transformation, become critical as low-carbon ambitions rise."

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07.06.2017

# Media

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Brink: Time for a Global Discussion on Climate Geoengineering

By Janos Pasztor. "Imagine a scenario where, after insufficient action by world governments, global temperatures have continued to rise; impacts of climate change have become substantial and frequent; and the world heads to a warming of 3-4 degrees Celsius above preindustrial levels. As a result, a handful of small countries, or a group of large coastal cities whose survival is threatened with sea level rise, in alliance with a billionaire philanthropist, decide unilaterally to save the world by spraying chemicals into the stratosphere to begin cooling the Earth."

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07.06.2017

# Media

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Carbon Brief: IEA: World can reach ‘net zero’ emissions by 2060 to meet Paris climate goals

"Global emissions can be pushed down to “net zero” by 2060 to meet the climate goals of the Paris Agreement, says the International Energy Agency (IEA)."

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07.06.2017

# Calls & events

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Newsletter of Week 23 of 2017

The newsletter of calendar week 23 in 2017 is now available here.


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06.06.2017

# Media

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Nextbigfuture Blog: Paris agreement’s tiny slowing of Global CO2 emissions growth mean we reach the same result 30-180 days later in the 2030s

"Geoengineering will eventually have to be used if we really wanted a cooler world"

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02.06.2017

# New Publications

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Zhao, Liyun; et al. (2017): Glacier evolution in high-mountain Asia under stratospheric sulfate aerosol injection geoengineering

Zhao, Liyun; Yang, Yi; Cheng, Wei; Ji, Duoying; Moore, John C. (2017): Glacier evolution in high-mountain Asia under stratospheric sulfate aerosol injection geoengineering. In: Atmos. Chem. Phys. 17 (11), S. 6547–6564. DOI: 10.5194/acp-17-6547-2017 

"We examine this hypothesis for the glaciers in high-mountain Asia using a glacier mass balance model driven by climate simulations from the Geoengineering Model Intercomparison Project (GeoMIP). The G3 and G4 schemes specify use of stratospheric sulfate aerosols to reduce the radiative forcing under the Representative Concentration Pathway (RCP) 4.5 scenario for the 50 years between 2020 and 2069, and for a further 20 years after termination of geoengineering. We estimate and compare glacier volume loss for every glacier in the region using a glacier model based on surface mass balance parameterization under climate projections from three Earth system models under G3, five models under G4, and six models under RCP4.5 and RCP8.5."

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02.06.2017

# New Publications

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Ahlm, Lars; et al. (2017): Marine cloud brightening – as effective without clouds

"Here we present results from coordinated simulations with three Earth system models (ESMs) participating in the Geoengineering Model Intercomparison Project (GeoMIP) G4sea-salt experiment. Injection rates of accumulation mode sea spray aerosol particles over ocean between 30° N and 30° S are set in each model to generate a global-mean effective radiative forcing (ERF) of −2.0 W m−2 at the top of atmosphere. We find that the injection increases the cloud droplet number concentration in lower layers, reduces the cloud-top effective droplet radius, and increases the cloud optical depth over the injection area."

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