Hi All
Despite a previous request this paper continues the whole-year spray
over all the sea areas between plus and minus 30 degrees latitude and so
ignores the option to vary the time and place at which spraying is done
with respect to seasons, monsoons and the phase of el Nino. High
latitudes have a very high susceptibility at mid summer. We know that
el Nino can have strong effects on precipitation far from the Pacific.
The Ben Parkes results suggest that spray off the Aleutians can
produce precipitation increases in the Amazon. It is like testing a
road vehicle with the steering locked and the driver blindfolded.
Stephen
Emeritus Professor of Engineering Design. School of Engineering.
University of Edinburgh. Mayfield Road. Edinburgh EH9 3JL. Scotland
[email protected] Tel +44 (0)131 650 5704 Cell 07795 203 195
WWW.see.ed.ac.uk/~shs YouTube Jamie Taylor Power for Change
On 26/03/2015 18:19, Andrew Lockley wrote:
http://onlinelibrary.wiley.com/doi/10.1002/2015GL063363/abstract
Tropical rainforest response to marine sky brightening climate
engineering†
Helene Muri, Ulrike Niemeier andJón Egill Kristjánsson
DOI: 10.1002/2015GL063363
Vol. 42 Issue 4
Geophysical Research Letters
doi: 10.1002/2015GL063363
Keywords:
Tropical forest;geoengineering;carbon cycle;climate;clouds
Abstract
Tropical forests represent a major atmospheric carbon dioxide sink.
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. Partial correlation analysis indicates precipitation to
be important in one of those models, whilst precipitation and
temperature are limiting factors in the other. One model experiences a
reversal of its Amazon dieback under marine sky brightening. There,
the strongest partial correlation of GPP is to temperature and
incoming solar radiation at the surface. Carbon fertilization provides
a higher future tropical rainforest GPP overall, both with and without
climate engineering. Salt damage to plants and soils could be an
important aspect of marine sky brightening.
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