Dear Gene,
Applause accepted.
I don't understand what experiment your are proposing? What is the
scientific question you want to address? But because of the response
time, even of land, you could not keep a small cloud over it long enough
to measure the response. We already have lots of analogs to look at,
such as day and night, and water clouds. What did you have in mind?
Alan
Alan Robock, Distinguished Professor
Editor, Reviews of Geophysics
Director, Meteorology Undergraduate Program
Department of Environmental Sciences Phone: +1-848-932-5751
Rutgers University Fax: +1-732-932-8644
14 College Farm Road E-mail: [email protected]
New Brunswick, NJ 08901-8551 USA http://envsci.rutgers.edu/~robock
http://twitter.com/AlanRobock
Watch my 18 min TEDx talk at http://www.youtube.com/watch?v=qsrEk1oZ-54
On 10/29/13 10:55 AM, [email protected] wrote:
Thanks for the information. I have read the article and applaud.
I wonder why the authors did not consider local isolated tests of the
sulfur approach. As I recall the 0.5 C drop following the volcanic
eruption was worldwide and lasted one to two years. It took time for
the sulfur to spread. Why not a local, immediate, short term
experiment before the sulfur has had time to spread significantly? It
would give an idea of possible greater magnitude but with reduced risk
except locally. It would avoid other effects from a volcanic eruption.
-gene
------------------------------------------------------------------------
*From: *"Geoengineering Our Climate (eds. Blackstock, Miller and
Rayner)" <[email protected]>
*To: *[email protected]
*Sent: *Tuesday, October 29, 2013 9:50:16 AM
*Subject: *[geo] Robock and Kravitz on "Use of Models, Analogs and
Field-tests for Geoengineering Research"
Dear colleagues,
For the "Geoengineering Our Climate?" working paper series, Alan
Robock (Rutgers) and Ben Kravitz (PNNL) have written an opinion
article *"Use of Models, Analogs and Field-tests for Geoengineering
Research"*. Below is an excerpt from the introduction (in lieu of an
abstract):
" ...How then can geoengineering be studied? One obvious
technique is to use global climate models (“indoor” research) to
simulate various proposed geoengineering schemes, such as adding
aerosols to the stratosphere to reflect incoming sunlight or
adding sea salt to marine stratus clouds to brighten them. Since
these two techniques mimic volcanic eruptions and ship tracks,
another suggestion is to study those phenomena as analogs to
geoengineering. There have also been several suggestions for field
experiments, as well as some small scale tests (“outdoor”
research), to learn about geoengineering. In this article, we
review these different research methods, commenting on their
utility, safety, ethics, and governance. We also discuss natural
analogs for geoengineering, such as the 1991 eruption of Mt.
Pinatubo and the observation of ship tracks, highlighting both
their utility in learning about the effects of geoengineering and
their limits in providing knowledge. As we will demonstrate,
geoengineering research is inseparable from climate research."
The article can be read and downloaded (as PDF) at:
http://geoengineeringourclimate.com/2013/10/29/use-of-models-analogs-and-field-tests-for-geoengineering-research/.
Best wishes to all,
Sean Low
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