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

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IPCC WGIII Fourth Assessment Report, Second Order Draft
629 discounting rates in (socio-)economic models for climate change.
Model and CBA outcomes are very sensitive to discounting rates,
and this lack in progress hampers decision making on the
magnitude of mitigation and adaptation efforts. We therefore
suggest to add: "As the choice of discount rates largely remains a
value judgement, the use of different discount rates in model
calculations and CBAs may assist transparant decision making."
SPM-
630
SPM-
631
SPM-
632
SPM-
633
(Government of The Netherlands)
8 A 8 21 8 21 Add: "It is, however, very important to put estimates of mitigation
costs into context by relating them to quantitative assessments of
damages avoided by mitigation on different time scales. Qualitative
evidence in the WG II report of AR4 suggests, that benefits from
avoided damages are likely to be enormous. Nevertheless,
quantitative assessments of aggregate benefits are poorly reflected
in WG II and WG III reports of AR4. Strengthening such
information in future IPCC assessments would be highly desirable."
(Government of Germany)
7 A 8 22 0 0 Footnote 4: The welfare implications of mitigation are hugely
influenced by "should pay for mitigation". Include a sentence along
the lines of 'Bottom-up studies that consider the distribution of
payment for mitigation may come to very different conclusions.'
(Harald Winkler, University of Cape Town)
7 A 8 22 0 0 Footnote 4: please add at the end "... should pay for this mitigation
and do not quantify the benefits from mitigation"
(Manfred Treber, Germanwatch)
0 A 8 22 9 1 Add a paragraph in order to discuss the effect of a noticeable and
sustained increase of oil and gas prices in the period (as already
observed) on emissions scenarios. While approaching the "peak oil"
(between now and year 2030), one could expect much higher oil
and gas prices. Although ups and down may still occur, this should
be considered as a real opportunity for policy makers,w ho should
consider it is of good policy to maintain sustained high prices for
the consumers in order to help the shift for better energy
management and renewable sources.
Expert Review of Second-Order-Draft
Confidential, Do Not Cite or Quote
Response suggested by cochairs
See A-612
REJ; that is already said in line
11-12
See A-612
See high oil price para issue A-
256
Action
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chapter
Considerations
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team
Page 163 of 348