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

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Comments
IPCC WGIII Fourth Assessment Report, Second Order Draft
A 5 2 5 2
emissions).
(Government of Australia)
Need a justification of why stabilisation rate of 450ppmv is used.
Are other scenarios considered?
(Government of Australia)
A 5 2 5 2 replace "as low as around" with "around or below" since a number
of scenarios assessed in ch. 3 show stabilisation lower than 450
ppm eq.
(Government of Germany)
B 5 2 5 2 … as low as … : This is very subjective ! It gives the impression
that 450 ppmv CO2-eq is the lowest stabilization level one could
dream of. May I remind you that the SRES scenarios were designed
with a "no climate policy" mandate, which means that many people
erroneously think SRES B1 or B2 are the lowest imaginable
scenarios. I suggest to say simply "even at levels around 450…".
Please amend Note 3 accordingly.
(Jean-Pascal van YPERSELE, Université catholique de Louvain
(Belgium))
A 5 3 5 3 replace "a range of" by "many" or "an important number"
(Aviel VERBRUGGEN, University of Antwerp)
B 5 3 5 3 … provided that a range of mitigaton technologies is developed … :
does it mean it is not possible at all with existing technologies ?
Mixing "further development" and "further implementation" in the
same sentence might give the wrong message to policy-makers that
a lot of technical development is needed to obtain this "technical
feasibility", when what is mostly needed is probably
implementation of the already existing techniques. In addition, this
paragraph starts with "It is technically feasible to ...", which echoes
Expert Review of Second-Order-Draft
Confidential, Do Not Cite or Quote
Response suggested by cochairs
TIA; heading text to be deleted,
but wording to be used for
merging with para 6. In table?
TIA; heading text to be deleted,
but wording to be used for
merging with para 6
TIA; heading text to be deleted,
but wording to be used for
merging with para 6
TIA; heading text to be deleted,
but wording to be used for
merging with para 6
TIA; heading text to be deleted,
but wording to be used for
merging with para 6
Action
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chapter
Considerations
by the writing
team
Page 90 of 348