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

Chapter-
Comment
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SPM-86 5
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SPM-87 5
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Comments
IPCC WGIII Fourth Assessment Report, Second Order Draft
1 Justification ?
(Jean-Pascal van YPERSELE, Université catholique de Louvain
1
SPM-90 5
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SPM-91 5
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SPM-92 5
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(Belgium))
B 6 0 6 0 Table SPM1: note 2. : avoid using "different" when you can give
the sign of the difference. I suggest saying "slighly higher" instead
of "different"
(Jean-Pascal van YPERSELE, Université catholique de Louvain
(Belgium))
B 6 0 6 0 Table SPM1: last Column:
Please give 2030 and 2100 as well, and consider using 1990 as a
reference, since this is a common reference year (UNFCCC, KP,
…)
(Jean-Pascal van YPERSELE, Université catholique de Louvain
(Belgium))
B 6 0 6 0 Table SPM1: Column 9: line A: 2000-2040: is it really so different
from the TAR? (is the statement page 5 line 11 so justified in this
case ?) I believe it is not, since the TAR did not look at CO-eq
stabilization..
(Jean-Pascal van YPERSELE, Université catholique de Louvain
(Belgium))
B 6 0 6 0 Table SPM1: Column 7: … sensitivity 23: Where is Note 23 ?
(Jean-Pascal van YPERSELE, Université catholique de Louvain
(Belgium))
B 6 0 6 0 Table SPM1: Column 4: line A: 450: the average of 375 and 510 is
442.5, which is closer to 440 than to 450 !
(Jean-Pascal van YPERSELE, Université catholique de Louvain
(Belgium))
B 6 0 6 0 Table SPM1: Column 3: The notion of "Multigas" is nowhere
defined. Does it include O3? What about SO2 and aerosols ?
Assumptions about these matter a lot.
(Jean-Pascal van YPERSELE, Université catholique de Louvain
(Belgium))
B 6 0 6 0 Table SPM1: Colum 8: … equilibrium 45: Where is Note 45 ?
NB: it is very good to look at +2 C and +3 C above pre-industrial,
Expert Review of Second-Order-Draft
Confidential, Do Not Cite or Quote
Response suggested by cochairs
ACC; “higher”
REJ; table already overloaded;
will consider adding graph with
reduction trajectories; 2000
reference good enough
See A-449
ACC; should be “2,3”
CHECK range of available
studies
ACC; glossary
ACC; should be “4,5”
Action
for
chapter
Considerations
by the writing
team
3 Noted. See
comment SPM-
421.
(3)
Page 114 of 348