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

Chapter-
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Comments
IPCC WGIII Fourth Assessment Report, Second Order Draft
A 5 2 5 6 It is not clear why only 450ppmv is presented here and it may give
the wrong impression that 450ppmv CO2-eq is a globally agreed
target. Need modification.
(Koji Kadono, Global Industrial and Social Progress Research
Institute(GISPRI))
A 5 2 0 0 Either remove the words "even" and "as low as", or take out 450 for
a lower figure. 450ppmv is not regarded by everyone as 'low'.
(Catherine Pearce, Friends of the Earth International)
A 5 2 5 2 replace "even at levels as low as" by "also at levels" because the
present wording includes a normative flavour
(Aviel VERBRUGGEN, University of Antwerp)
A 5 2 5 4 This sentence requires further justification. There is a time lag for
development and implementation of technologies. Also, there is a
lock-in effect of existing technologies. Furthermore, new
technologies are normally more expensive and they are normally
not employed immetiately at full scale, in particular in developing
countries. Therefore, it is suggested at the end of the sentence to
add "Low stablization scenarios may look highly optimistic, if not
unrealistic, taken into factors such as time-lag, innertia and cost
involved with respect to the development and employment
technologies."
(Government of China Meteorological Administration)
A 5 2 0 0 To facilitate reading, a footnote about the level on pre-industrial
GHG concentrations may be helpful. A similar reference to WGII
about stabilisation levels and impacts may also be considered.
(Government of Norwegian Pollution Control Authority)
A 5 2 5 3 The authors should explain when stabilisation occurs for these
levels. It should also be explained what this means in this in terms
of global ghg CO2-e emission levels, (i.e Pg of global CO2-e
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Confidential, Do Not Cite or Quote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 5
TIA; heading text to be deleted,
but wording to be used for
merging with para 5
TIA; heading text to be deleted,
but wording to be used for
merging with para 5
REJ; time lags and inertia have
been included in studies
assessed (CHECK); costs are
presented separately
Para to be reworded, see also A-
344.
TIA; heading text to be deleted,
but wording to be used for
merging with para 5
TIA; heading text to be deleted,
but wording to be used for
merging with para 5
Action
for
chapter
Considerations
by the writing
team
3 Noted. Text to
be revised in
accordance with
comment SPM-
328
(3)
Page 89 of 348