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

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IPCC WGIII Fourth Assessment Report, Second Order Draft
g technological measures (i.e. lifestyle changes, the 3R's, modal
shifts, city planning, etc). Therefore, this sentence should be revised
to "Scenario studies suggest it is feasible both in technological and
non-technological manners to stabilise GHG concentrations in the
atmosphere, even at levels as low as around 450 ppmv CO2-eq3,
provided that a range of mitigation technologies is further
developed and implemented."
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(Government of Japan)
A 5 1 5 6 This text about scenario studies is a very important finding in the
WG III report and should be kept as a key finding in bold text. In
the second sentence we propose the following change: "For
achieving such levels policies should lead a decline in global
emissions within the next decades."
(Government of Norwegian Pollution Control Authority)
A 5 1 5 5 Here the report is discussing technical feasibility. There seems to be
considerable new information about the magnitude of reductions
that can be achieved with existing technologies and instruments.
This section should identify what stabilization levels could be
attained with existing tools in addition to the included statement on
what levels would require development of something new. The
International Energy Agency's Alternative future Scenarios from
their WEO 2005 report and the recent June 2006 release of the
seminal IEA "Energy Technology Perspectives: Strategies and
Scenarios to 2050" are important references.
(Government of Environment Canada)
A 5 1 5 1 Delete "scenario". So many references to scenarios it is getting
confusing and not needed here. Add "still" before "technically
feasible".
(Government of Environment Canada)
A 5 1 5 4 450ppmv is considered a very low concentration target. What about
lower ones? They are not given much consideration in the SPM.
Table SPM1 class A covers a huge range of concentration levels,
including some below 450. Reformulate ..'at levels as low as round
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Confidential, Do Not Cite or Quote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 6
DISCUSS; this is an issue for
para 6;
Para 6 to be reworded carefully.
REJ; nothing wrong with
scenario studies; “still” cannot
be deleted
TIA; heading text to be deleted,
but wording to be used for
merging with para 6. REJ: is
around ..is necessary.
Action
for
chapter
Considerations
by the writing
team
3 Rejected.
Concepts of
existing
technologies
and instruments
undefined.
(3)
Page 86 of 348