26.12.2015

# New Publications

0 Comments

DeMott, Paul J.; et al. (2015): Sea spray aerosol as a unique source of ice nucleating particles

DeMott, Paul J.; Hill, Thomas C. J.; McCluskey, Christina S.; Prather, Kimberly A.; Collins, Douglas B.; Sullivan, Ryan C. et al. (2015): Sea spray aerosol as a unique source of ice nucleating particles. In PNAS. DOI: 10.1073/pnas.1514034112.

"Ice nucleating particles (INPs) are vital for ice initiation in, and precipitation from, mixed-phase clouds. A source of INPs from oceans within sea spray aerosol (SSA) emissions has been suggested in previous studies but remained unconfirmed. Here, we show that INPs are emitted using real wave breaking in a laboratory flume to produce SSA."

Link


Read more »

17.11.2015

# New Publications

0 Comments

Quaas, Johannes (2015): Approaches to Observe Anthropogenic Aerosol-Cloud Interactions

Quaas, Johannes (2015): Approaches to Observe Anthropogenic Aerosol-Cloud Interactions. In Curr Clim Change Rep 1 (4), pp. 297–304. DOI: 10.1007/s40641-015-0028-0 

"Anthropogenic aerosol particles exert an—quantitatively very uncertain—effective radiative forcing due to aerosol-cloud interactions via an immediate altering of cloud albedo on the one hand and via rapid adjustments by alteration of cloud processes and by changes in thermodynamic profiles on the other hand. Large variability in cloud cover and properties and the therefore low signal-to-noise ratio for aerosol-induced perturbations hamper the identification of effects in observations."

Link


Read more »

01.10.2015

# Media

0 Comments

Irish Times: Could cloud brightening be Earth’s last chance?

"A project aims to manipulate cloud formations in order to combat climate change. The naysayers are lining up, but the group argues there are few viable options left"

LInk


Read more »

27.08.2015

# Projects

0 Comments

Project: Marine Cloud Brightening Project (international)

"The Marine Cloud Brightening Project is an open, international collaboration of atmospheric scientists and other experts to advance understanding of cloud responses to aerosol particles - a critical part of understanding the climate, and a critical area in which human activities are thought to cause significant effects."

Link


Read more »

24.08.2015

# Media

0 Comments

Crunch Network: Controversial Climate-Change Solution May Be In The Clouds

"In a move that has some environmentalists up in arms, a group of retired Silicon Valley engineers and scientists are proposing a new approach to fighting climate change. They want to brighten clouds. It’s one of the many solutions being proposed in the controversial industry of geoengineering."

Link


Read more »

05.08.2015

# New Publications

0 Comments

Parkes, B.; et al. (2015): Crop failure rates in a geoengineered climate: impact of climate change and marine cloud brightening

Parkes, B.; Challinor, A.; Nicklin, K. (2015): Crop failure rates in a geoengineered climate: impact of climate change and marine cloud brightening. In Environ. Res. Lett. 10 (8), p. 084003–84003. DOI 10.1088/1748-9326/10/8/084003.

"We investigate the impact of a future climate and a potential geoengineering scheme on the number of crop failures in two regions, Northeastern China and West Africa. Climate change associated with a doubling of atmospheric carbon dioxide increases the number of crop failures in Northeastern China while reducing the number of crop failures in West Africa"

Link


Read more »

13.07.2015

# Media

0 Comments

Contra Costa Times: Controversial 'cloud brightening' project proposed for Moss Landing

"A team of elder Silicon Valley scientists is building an audacious device that might solve one of humanity's most profound dilemmas -- a "cloud whitener" designed to cool a warming planet."

Link


Read more »

26.05.2015

# New Publications

0 Comments

Boucher, Olivier (2015): Aerosol-Based Climate Engineering

Boucher, Olivier (2015): Aerosol-Based Climate Engineering. In: Atmospheric Aerosols. Edited by Olivier Boucher. Dordrecht: Springer Netherlands, pp. 287–294. DOI 10.1007/978-94-017-9649-1_13

"This chapter introduces climate engineering as a range of techniques aiming to alleviate the impacts of climate change. Two aerosol-based techniques, known as stratospheric aerosol injection and marine cloud brightening, are discussed in terms of their potential, side effects, and shortcomings."

Link


Read more »

13.04.2015

# New Publications

0 Comments

Korhonen, Hannele; Partanen, Antti-Ilari (2014): Cloud Brightening and Climate Change

Korhonen, Hannele; Partanen, Antti-Ilari (2014): Cloud Brightening and Climate Change. In Bill Freedman (Ed.): Global Environmental Change. Dordrecht: Springer Netherlands, pp. 777–782.

"While climate models suggest that cloud brightening might be able to offset at least some of the predicted global warming, large uncertainties remain related to the efficiency as well as to the environmental and regional climate impacts of the method."

Link


Read more »

26.03.2015

# New Publications

0 Comments

Muri, Helene; et al. (2015): Tropical rainforest response to marine sky brightening climate engineering

Muri, Helene; Niemeier, Ulrike; Kristjánsson, Jón Egill (2015): Tropical rainforest response to marine sky brightening climate engineering. In: Geophys. Res. Lett., S. n/a. DOI: 10.1002/2015GL063363.

"Here, the gross primary productivity (GPP) response of tropical rainforests to climate engineering via marine sky brightening under a future scenario is investigated in three Earth system models. The model response is diverse, and in two of the three models, the tropical GPP shows a decrease from the marine sky brightening climate engineering."

Link


Read more »