[PCA] Plants moderate climate warming // Warming-induced increase in aerosol number concentration likely to moderate climate change

De Angelis, Patricia patricia_deangelis at fws.gov
Mon Apr 29 10:46:49 CDT 2013


*Plants moderate climate warming*

Apr. 28, 2013 — As temperatures warm, plants release gases that help form
clouds and cool the atmosphere, according to research from IIASA and the
University of Helsinki.

The new study, published in *Nature Geoscience*, identified a negative
feedback loop in which higher temperatures lead to an increase in
concentrations of natural aerosols that have a cooling effect on the
atmosphere.

Full article:

http://www.sciencedaily.com/releases/2013/04/130428144921.htm


- - - - BASED ON THIS STUDY:

Warming-induced increase in aerosol number concentration likely to moderate
climate change

Pauli Paasonen<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-1>
,1 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a1>,
 2 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a2>,
 17<http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a17>
Ari
Asmi<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-2>
,1 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a1>,
 17<http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a17>
Tuukka
Petäjä<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-3>
,1 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a1>
Maija
K. Kajos<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-4>
,1 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a1>
Mikko
Äijälä<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-5>
,1 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a1>
Heikki
Junninen<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-6>
,1 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a1>
Thomas
Holst<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-7>
,3 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a3>
Jonathan
P. D. Abbatt<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-8>
,4 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a4>
Almut
Arneth<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-9>
,5 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a5>
Wolfram
Birmili<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-10>
,6 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a6>
Hugo
Denier van der Gon<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-11>
,7 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a7>
Amar
Hamed<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-12>
,8 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a8>
András
Hoffer<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-13>
,9 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a9>
Lauri
Laakso<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-14>
,10<http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a10>
, 11<http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a11>
Ari
Laaksonen<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-15>
,8 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a8>,
 10<http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a10> W.
Richard Leaitch<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-16>
,12<http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a12>
Christian
Plass-Dülmer<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-17>
,13<http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a13>
Sara
C. Pryor<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-18>
,14<http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a14>
Petri
Räisänen<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-19>
,10<http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a10>
Erik
Swietlicki<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-20>
,15<http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a15>
Alfred
Wiedensohler<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-21>
,6 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a6>
Douglas
R. Worsnop<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-22>
,1 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a1>,
 8 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a8>,
 10<http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a10>
, 16<http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a16>
Veli-Matti
Kerminen<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-23>
1 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a1> &
 Markku Kulmala<http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html#auth-24>
1 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#a1>

Nature Geoscience Year published: (2013)

Atmospheric aerosol particles influence the climate system directly by
scattering and absorbing solar radiation, and indirectly by acting as cloud
condensation nuclei1<http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#ref1>,
2 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#ref2>,
3 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#ref3>,
4 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#ref4>.
Apart from black carbon aerosol, aerosols cause a negative radiative
forcing at the top of the atmosphere and substantially mitigate the warming
caused by greenhouse
gases1<http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#ref1>.
In the future, tightening of controls on anthropogenic aerosol and
precursor vapour emissions to achieve higher air quality may weaken this
beneficial effect5<http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#ref5>,
6 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#ref6>,
7 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#ref7>.
Natural aerosols, too, might affect future
warming2<http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#ref2>,
3 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#ref3>,
8 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#ref8>,
9 <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#ref9>.
Here we analyse long-term observations of concentrations and compositions
of aerosol particles and their biogenic precursor vapours in continental
mid- and high-latitude environments. We use measurements of particle number
size distribution together with boundary layer heights derived from
reanalysis data to show that the boundary layer burden of cloud
condensation nuclei increases exponentially with temperature. Our results
confirm a negative feedback mechanism between the continental biosphere,
aerosols and climate: aerosol cooling effects are strengthened by rising
biogenic organic vapour emissions in response to warming, which in turn
enhance condensation on particles and their growth to the size of cloud
condensation nuclei. This natural growth mechanism produces roughly 50% of
particles at the size of cloud condensation nuclei across Europe. We
conclude that biosphere–atmosphere interactions are crucial for aerosol
climate effects and can significantly influence the effects of
anthropogenic aerosol emission controls, both on climate and air quality.

The article is at:
http://www.nature.com/ngeo/journal/vaop/ncurrent/abs/ngeo1800.html




Patricia S. De Angelis, Ph.D.
Botanist, Division of Scientific Authority-US Fish & Wildlife
Service-International Affairs
Chair, Medicinal Plant Working Group-Plant Conservation Alliance
4401 N. Fairfax Dr., Suite 110
Arlington, VA  22203
703-358-1708 x1753
FAX: 703-358-2276

Promoting sustainable use and conservation of our native medicinal plants.
<www.nps.gov/plants/medicinal>

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