On a technical point, is ocean acidification actually an IPCC
responsibility? It's a separate issue from climate change (tho with
common cause) and may be better dealt with under a separate institution
with a better track record of actually achieving results, for example,
the International Maritime Organisation and / or UNEP.
Oliver Tickell
On 28/05/2015 04:16, John Nissen wrote:
Hi Ron,
The inability of IPCC to get to grips with the ocean acidification
problem is grounds for complaint. Aggressive CDR may be the only path
to reduce atmospheric CO2 to a reasonably safe level, given the
uncertainty of the effects of ocean acidification on the food chain.
A huge amount is at stake, since about 15% of the world population
rely on fish for the protein in their diet [1].
Further measures specifically for acidification may be added to CDR -
I am thinking of olivine rock crushing and ideas put to me by Oliver
Tickell and Olaf Schuiling. There is also the possibility of specific
local cooling measures for helping corals, e.g. using cloud
brightening as suggested by Stephen Salter and others.
None of this is mentioned by IPCC, yet disruption to coral life and
the marine food chain could be a significant threat to humanity,
affecting particularly the under-developed countries and small island
states.
The Earth System is now well outside the safe limits (safe for
humanity) which have been obtained during the past eight thousand
years, during which human civilisation has developed and on which
modern civilisation now relies.
A determined effort is needed to bring the Earth System back to the
"old norm", rather than risk than we can adapt successfully to major
change in the pipeline: a lethal combination of excessive ocean
acidification, excessive global warming, excessive climate change and
complete Arctic meltdown (coupled with meltdown of the West Antarctic
Ice Sheet).
This effort is what IPCC should be demanding from governments,
otherwise we are heading for global catastrophe from which
civilisation might find it difficult to recover.
On the other hand, this is an unprecedented opportunity for
international collaboration in the interests of all of us: to take
charge of our own future on this planet and restore the 'old
normality'. It can be done, but only if the nettle of geoengineering
is grasped straight-away.
Cheers, John
[1] https://www.msc.org/healthy-oceans/the-oceans-today/fish-as-food
On Wed, May 27, 2015 at 6:12 PM, Ronal W. Larson
<[email protected] <mailto:[email protected]>> wrote:
List: cc Greg et al
See below.
On May 27, 2015, at 12:28 AM, Greg Rau <[email protected]
<mailto:[email protected]>> wrote:
Certainly agree that new and unconventional marine
management/mitigation methods are likely going to be needed
http://www.nature.com/nclimate/journal/v2/n10/full/nclimate1555.html?WT.ec_id=NCLIMATE-201210
*[RWL1: Greg (overly modest?) was himself the first author of
this excellent 2012 plea for more thought needed on means of
reducing ocean acidification - the topic of this thread, **with
an SRM slant, ** started yesterday by Andrew. Unfortunately
behind the usual Nature paywall, fortunately I found hi above
Nature contribution, with its strong CDR slant, at:*
*http://www.homepages.ed.ac.uk/shs/Hurricanes/Greg%20Rau%20ocean%20carbon.pdf*
*I recommend it strongly and thank Greg for citing it.
*
That message has strangely fallen on deaf ears at the policy
level. The current mantra is either adequately and quickly
reduce CO2 levels or hope that ecosystems will be resilient,
neither of which seems likely. Check out the new NOVA production
"Lethal Seas" on PBS for a sobering look at the ocean
acidification problem and the preceding mantra again repeated.
Lethal indeed.
*[RWL2: Only released this past few weeks, it is at:
*http://www.thirteen.org/programs/nova/#lethal-seas
*Agreed that NOVA is not talking Greg’s CDR option search, but the
video is indeed “sobering” - and highly supportive of Greg’s
concerns.*
*
*
*A bit more also below. *
Greg
On May 26, 2015, at 9:30 AM, Fred Zimmerman
<[email protected] <mailto:[email protected]>>
wrote:y Ande
For skimmers:
The conclusions drawn from this body of work, which applied
widely used algorithms to estimate coral bleaching8 , are that
we must either accept that the loss of a large percentage of the
world’s coral reefs is inevitable, or consider technological
solutions to buy those reefs time until atmospheric CO2
concentrations can be reduced.
An optimum approach to preserve coral reefs would most likely
advocate a mitigation intensive scenario such as RCP2.6 (ref. 6)
that addresses global-scale ocean acidification concerns17 in
combination with detailed monitoring and the option of deploying
carefully researched local or global SRM to limit thermal stress
if unacceptable thresholds are reached.
*RWL3: *Ref. 17 is pertinent:
Ricke, K. L., Orr, J. C., Schneider, K. & Caldeira, K. Risks to
coral reefs from ocean carbonate chemistry changes in recent earth
system model projections. Environ. Res. Lett. 8, 034003 (2013)
which is open source at:
http://iopscience.iop.org/1748-9326/8/3/034003
with a short informative video at:
http://brightcove.vo.llnwd.net/e1/uds/pd/105920850001/105920850001_2524759311001_abstract-video-b712c8cd6e6e50f94d98905e23d0db6e-converted.mp4
*Ron ( the “attached” below from Andrew, with quotes by Fred, is
a full pdf of an article by Kwiatkowski et al - also mentions CDR.)*
ᐧ
On Tue, May 26, 2015 at 12:23 PM, Andrew Lockley
<[email protected] <mailto:[email protected]>> wrote:
Attached
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