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 6 0 0 0
and 450-510
(Gabriela Von Goerne, Greenpeace)
Table SPM-1: Is it possible to add a column on global mean
temperarure at 2100?
(Government of Environment Canada)
A 6 0 0 0 SPM 1: The EU has set the target of a maximum of 2 C global
temperature increase. Meeting this target for sure would require a
stablization level of probably below 450ppmv. But with 450ppmv
there seem to be already a median probability of more than 50% to
overshoot this target. Are there scenarios quantifying the
parameters of this table for a stabilization level consistent with a
maximum of 2 C.
(Government of Germany)
B 6 0 6 0 Table SPM1: This table is very important for the SPM. Some more
precision is however needed. For example, in Column 2: (W/m2) :
the title of this column does not seem coherent with the definition
of radiative forcing in the glossary: radiative forcing is defined
there as a change, which suggests that the word "addition" is wrong
here. Moreover, the reference year should be given.
(Jean-Pascal van YPERSELE, Université catholique de Louvain
(Belgium))
B 6 0 6 0 Table SPM1: note 7: … wide range in class A : this results in
giving a ridiculous "very likely to unlikely" confidence level, which
is totally useless for policy making. It would therefore be more
appropriate to divide the A class in smaller categories, so that the
range in confidence could also be narrowed down.
(Jean-Pascal van YPERSELE, Université catholique de Louvain
(Belgium))
B 6 0 6 0 Table SPM1: note 5: Add "IPCC" before "definition" at beginning
of sentence
(Jean-Pascal van YPERSELE, Université catholique de Louvain
(Belgium))
B 6 0 6 0 Table SPM1: note 4: …why is the 80% confidence interval used in
one part of note 4, and 90% in another. Hard to compare then.
Expert Review of Second-Order-Draft
Confidential, Do Not Cite or Quote
Response suggested by cochairs
REJ; table already overloaded
REJ; this is the best we can do
TIA; W/m2 column will be
deleted
ACC; category A to be split
ACC
ACC elaborate note
Action
for
chapter
Considerations
by the writing
team
Page 113 of 348