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

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IPCC WGIII Fourth Assessment Report, Second Order Draft
21 A 13 27 13 33 There are a number of concerns about the global mitigation
potential estimates presented for agriculture, including: (a) An
over-reliance on one study (Smith, et. al.) which is poorly described
in the chapter and the paper is not well documented; (b)
extrapolation of U.S. results based on the FASOM model to other
regions of the world; (c) the global results use the FASOM model
as an underlying tool, there are double-counting concerns with
results presented in the forestry chapter; (d) The results appear to be
cobbled-together and are not appropriately caveated; (e) The
characterization of U.S. agricultural climate change policy is
inaccurate; (f) there are several references to biofuels that will need
to be cross-referenced with the energy chapters; (g) There are
global estimates of the mitigation potential of agricultural activities,
including the EMF-21 results and EPA, 2005, that are not captured
in the chapter. U.S. Government
(Government of U.S. Department of State)
17 A 13 1 13 3 Delete "By 2020, up to 60% of the GHG emissions in the buildings
of developimg countries and economies in transition(EIT), and up
to 25% of those in developed countries, can be prevented at net
negative cost(HL)." No wide range studies can prove the rightness
of those data.
(Yuan Guo, Energy Research Institute, National Development and
Reform Commission)
17 A 13 1 13 3 starting at "By 2020 ...", this statement seems to contradict the entry
of §6 (p.7, line 1-2) and also line 10, p.13 where "strong barriers"
are mentioned. It is true that buildings own a huge emission
reduction potential, but the inertia and barriers are significant (when
carbon prices stay low), and therefore it is difficult to agree on the
lines 1-3 of p.13.
(Aviel VERBRUGGEN, University of Antwerp)
Expert Review of Second-Order-Draft
Confidential, Do Not Cite or Quote
Response suggested by cochairs
Action
for
chapter
Considerations
by the writing
team
DISCUSS 8 Some refs will
be included.
D will be
addressed in
chapter
E has been
corrected
F accepted
G EMF will be
included.
NONE OF
THESE
POINTS
AFFECT THE
SPM TEXT
DISCUSS
Are these numbers for new
buildings or for the whole
sector, inclusing existing
building stock?
How strong is the literature?
ACC; something on barriers to
be added to warrant government
policy when profits can be
achieved
6 Reject. The
numbers are for
the entire
building stock.
74 studies from
app. 40
countries and
country groups
support these
figures.
(6)
We have
included the
discussion about
barriers in lines
10 – 11.
(6)
Page 242 of 348