Government Comments on the Final Draft of the SPM IPCC Working ...

<strong>Government</strong> <strong>Comments</strong> on the Final Draft of the SPM
IPCC Working Group I Fourth Assessment Report
Batch
Page:line
No.
From To Comment
SPM-321 A 5:29 5:29 Insert "of sea level rise" after "similar rates".
[Govt. of Australia (Reviewer’s comment ID #: 2002-49)]
SPM-322 A 5:30 5:31 The final sentence of this dot point would be better placed at the start of the dot point to present a chronological progression in
the discussion of sea level rise - from increased rate between the 19th-20th centuries, to total 20th century rise, to increased
late-20th century rate.
[Govt. of Australia (Reviewer’s comment ID #: 2002-50)]
SPM-323 A 5:30 5:30 States: "an increase in the longer-term trend." It is unclear whether this phrase refers to "recent acceleration of the long-term
trend" or "just the increase as reflection of the steady long-term trend." Clarification of the expression is necessary.
[Govt. of Japan (Reviewer’s comment ID #: 2013-12)]
SPM-324 A 5:31 5:31 It looks like the glacier plus thermal expansion terms (which are modelled, and this should be said) add to about 0.9mm/yr
while the observed is twice that value. This paragraph needs to say that there is a big contribution missing from the modelled
values, and present the inadequate model values for ice sheet contribution and link to the bullet on observed ice sheet
contribution below. Otherwise, it looks like you are trying to pretend that the 0.41 mm/yr (page 5 line 47) comes from the
models, in which case everything would be more or less fine. But it's not!
[Govt. of Belgium (Reviewer’s comment ID #: 2003-26)]
SPM-325 A 5:32 5:32 What are the respective contributions to the average 0,17 m sea level rise arising from the following factors: melting down of
mountain glaciers, evolution of the ice sheets of Greenland and Antarctica and sea water expansion (due to temperature
increase) ?
[Govt. of Belgium (Reviewer’s comment ID #: 2003-27)]
SPM-326 A 5:35 5:35 Suggest reversion to wording based on the previous SPM draft for clarity. Replace first sentence with "A broad range of
climatic variables provide clear evidence of systematic changes in the climate on global, continental and regional scales".
[Govt. of Australia (Reviewer’s comment ID #: 2002-52)]
SPM-327 A 5:35 5:37 Indicate in these statements what is new since the TAR. Also reorder sentence to clearly indicate the information in this
section is different than that presented above. Suggest: “At the continental or ocean basin scale, numerous changes in climate
have also been observed.”
[Govt. of Canada (Reviewer’s comment ID #: 2004-23)]
SPM-328 A 5:35 5:36 "These include wind patterns, precipitation, ocean salinity, sea ice, ice sheets, and aspects of extreme weather." "wind
patterns" should be deleted, because there are no corresponding description about wind patterns in the following bullets.
[Govt. of China (Reviewer’s comment ID #: 2006-17)]
SPM-329 A 5:35 5:36 5 36 Replace with: “Numerous changes higher than the global average have been observed in certain regions including,
Arctic temperature increase twice the global average, increased precipitation in several regions and more intense droughts in
the tropics and subtropics.” Rational: The draft bold text here covers the next 10 bullets. We suggest this s split in two parts
one about regional changes different from the global average and one about extremes and variability.
[Govt. of Norway (Reviewer’s comment ID #: 2016-51)]
SPM-330 A 5:35 5:35 Add, at the end of the sences:"…or ocean basins and are consistent with global warming."
[Govt. of Switzerland (Reviewer’s comment ID #: 2020-15)]
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