SODBatch A&B SPM Comments co-chair response final ... - ipcc-wg3

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IPCC WGIII Fourth Assessment Report, Second Order Draft
di
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(Government of Australia)
5 A 5 7 5 8 The statement that "Global emissions need to start declining at
some time in the future…" is obvious and needs sharpening to be
useful. Suggest "A risk management framework suggests that
global emissions need to be stabilised within a period of 1-3
decades and to be strongly reduced thereafter, to achieve
stabilisation of GHG concentrations without undue risk."
(Ralph Chapman, Victoria University of Wellington)
6 A 7 25 8 15 The SPM needs to be a bit more precise in its language when it
F
attempts to equate various CO2 stabilization levels to policies that
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would seek to hold radiative forcing below some level. The
emissions pathways are not the same and this matters especially
when one adopts such a short time frame as 2030. If larger
emissions reductions are needed in the next couple of decades
under the radiative forcing scenarios -- as compared to something
like a WRE stabilization scenario -- that will require a different set
of actions and carbon prices which will change which technologies
deploy. These are not the same thing. Need to be more careful on
this point.
(James Dooley, Battelle)
0 A 9 0 11 0 following the suggestion to apply only qualitative statements about
uncertainty in section B this could also be suggested for the general
parts of section C (statements 9-12), where this is already the case
in most statements.
(Rob Swart, MNP)
12 B 11 41 11 41 “Potentially large cost reductions” – on the order of ? U.S.
Government
(Government of U.S. Department of State)
14 A 12 16 0 0 Suggest add after the word "unattractive": "; and there are
sequestration risks associated with CCS."
(Ralph Chapman, Victoria University of Wellington)
16 A 12 34 0 0 Suggest add reference to public transport oriented development.
Specifically, insert after "facilities" the words "and public transport
oriented urban development"
(Ralph Chapman, Victoria University of Wellington)
15 A 12 34 0 0 Add sentence to end of paragraph: "Many of these measures have
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health benefits or other social co
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(Ralph Chapman, Victoria University of Wellington)
21 A 13 27 13 33 different from chapter 9 and chapter 8, it is the first time that a
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confidence level is mentioned. It is absolutely unclear how the high
Expert Review of Second-Order-Draft
Confidential, Do Not Cite or Quote
TIA
UNCLEAR
DISCUSS 4-11, CG
Uncertai
nty
Identical A-803
TIA when reformulating
ACC; add “urban development”
TIA in reformulating
DISCUSS 8,9, CG
Uncertia
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