Ninad
The International Maritime Organization is proposing to restrict sulphur
emissions from ships which will have the warming effect you describe
except in the Arctic.
Stephen
On 27/05/2013 16:24, Ninad Bondre wrote:
Measures that tackle air pollution have led to well-documented,
largely positive health outcomes that need not be repeated here. That
cooling is an "unintended consequence" of such measures is hardly
news: that is why several recent endeavours have called for tackling
air pollution and climate in an integrated fashion (e.g.
http://www.igacproject.org/sites/all/themes/bluemasters/images/IGBP_IGAC_AirPolClim_Statement_FINAL.pdf).
Are members of this group considering researching aerosol removal to
intentionally warm the climate? Any current research or proposed
research projects aimed at tackling climate change by engaging in
climate warming? Do update the group if that is the case. Then we can
have a meaningful conversation about that "extensive, un-announced ,
un-reviewed and un-regulated a climate intervention".
On Monday, May 27, 2013 5:53:14 AM UTC+2, Ken Caldeira wrote:
Why aren't ETC and the Chemtrail nutters up in arms about this?
They would rather focus on the hypothetical and the fantastical
than focus on the climate change that modern society is today
knowingly causing.
On Sun, May 26, 2013 at 2:38 PM, Russell Seitz
<[email protected] <javascript:>> wrote:
So extensive, un-announced , un-reviewed and un-regulated a
climate intervention must surely contravene the London
Convention!
On Saturday, May 25, 2013 12:12:18 PM UTC-4, Ken Caldeira wrote:
http://www.sciencedirect.com/science/article/pii/S1352231011007722
<http://www.sciencedirect.com/science/article/pii/S1352231011007722>
Atmospheric Environment
<http://www.sciencedirect.com/science/journal/13522310>
Volume 46
<http://www.sciencedirect.com/science/journal/13522310/46/supp/C>,
January 2012, Pages 545–553
Cover image
<http://www.sciencedirect.com/science/journal/13522310/46/supp/C>
Regional warming from aerosol removal over the United
States: Results from a transient 2010–2050 climate
simulation
* L.J. Mickley
<http://www.sciencedirect.com/science/article/pii/S1352231011007722#>^a
<http://www.sciencedirect.com/science/article/pii/S1352231011007722#aff1>^,
Corresponding author contact information
<http://www.sciencedirect.com/science/article/pii/S1352231011007722#cor1>^,
E-mail the corresponding author,
* E.M. Leibensperger
<http://www.sciencedirect.com/science/article/pii/S1352231011007722#>^a
<http://www.sciencedirect.com/science/article/pii/S1352231011007722#aff1>^,
^b
<http://www.sciencedirect.com/science/article/pii/S1352231011007722#aff2>,
* D.J. Jacob
<http://www.sciencedirect.com/science/article/pii/S1352231011007722#>^a
<http://www.sciencedirect.com/science/article/pii/S1352231011007722#aff1>,
* D. Rind
<http://www.sciencedirect.com/science/article/pii/S1352231011007722#>^c
<http://www.sciencedirect.com/science/article/pii/S1352231011007722#aff3>
We find that
removing U.S. aerosol significantly enhances the warming
from greenhouse gases in a spatial pattern that
strongly correlates with that of the aerosol. Warming is
nearly negligible outside the United States, but
annual mean surface temperatures increase by 0.4 - 0.6 K
in the eastern United States
This article suggests that "inadvertent regional
geoengineering" is already cooling the US by about 0.5 C
in the eastern US. Note that they find little effect
outside of the "geoengineered" region.
(This came out last year but I missed it then.)
_______________
Ken Caldeira
Carnegie Institution for Science
Dept of Global Ecology
260 Panama Street, Stanford, CA 94305 USA
+1 650 704 [email protected]
http://dge.stanford.edu/labs/caldeiralab
<http://dge.stanford.edu/labs/caldeiralab>@kencaldeira
*Caldeira Lab is hiring postdoctoral researchers.*
*http://dge.stanford.edu/labs/caldeiralab/Caldeira_employment.html
<http://dge.stanford.edu/labs/caldeiralab/Caldeira_employment.html>*
Check out the profile of me on NPR's All Things Considered
<http://www.npr.org/2013/04/22/176344300/this-scientist-aims-high-to-save-the-worlds-coral-reefs>
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