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

Chapter-
Comment
SPM-
388
SPM-
389
SPM-
390
SPM-
391
para
5
he
ad
in
g
Batch
From Page
From Line
To Page
To line
Comments
IPCC WGIII Fourth Assessment Report, Second Order Draft
A 5 6 5 6 What uncertainity is referred to? Uncertainty around climate
sensitivity is the same regardless of stabilization level. Uncertainty
in the probabilty that a certain stabilization level will result in
staying below a certain temperature increase is actually LESS for
lower stabilization levels. Need clarification.
(Government of Environment Canada)
5 A 5 6 5 9 replace "start declining" by "stop growing", delete "and to be
strongly reduced thereafter", after "... peaking of emissions" add
"and/or strong emission reductions thereafter"
5
he
ad
in
g
5
he
ad
in
g
SPM-70 5
he
ad
in
g
SPM-71 5
he
ad
in
(Government of The Netherlands)
A 5 6 5 6 The authors should explain what the "uncertainty" relates to.
(Government of Australia)
A 5 6 5 6 delete "and the uncertainty". While uncertainty of lower
stabilisation scenarios with regard to feasibility might be
increasing, other scenarios with higher stabilisation levels have
higher uncertainties with regard to climate risks and possible need
for very drastic reductions in emissions due to unexpected climate
change from higher ghg-concentrations. Pointing to only one part
of uncertainties for lower stabilisation levels seems thus an
unbalanced representation of evidence.
(Government of Germany)
B 5 6 5 6 … , the higher the costs OF MITIGATION and the uncertainty:
Please add "of mitigation" to clarify. In addition, it would be useful
to add as well : "and the lower the costs of impacts" at the end of
the sentence.
(Jean-Pascal van YPERSELE, Université catholique de Louvain
(Belgium))
B 5 6 5 6 “The use of uncertainty at the end of the sentence is unclear.
Uncertainty of what? Recommend ‘uncertainty of achieving the
intended stabilization goal.’” The authors should potentially clarify
the statement of B.5. The key point is that is that emissions must
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Confidential, Do Not Cite or Quote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 considered for
para 7
TIA; heading text to be deleted,
but wording to be considered for
para 7
TIA; heading text to be deleted,
but wording to be considered for
para 7
TIA; heading text to be deleted,
but wording to be considered for
para 7
TIA; heading text to be deleted,
but wording to be considered for
para 7
Action
for
chapter
Considerations
by the writing
team
Page 98 of 348