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-380 A 6:21 6:22 Respect to the different regional analyses quoted in 3.8.2.2, this statement seems too strong. A region by region analysis, as
for the precipitation, could be usefull.
[Govt. of Italy (Reviewer’s comment ID #: 2012-32)]
SPM-381 A 6:21 6:21 Write:"…, consistent with global warming and …"
[Govt. of Switzerland (Reviewer’s comment ID #: 2020-16)]
SPM-382 A 6:21 6:22 It would be helpful to add some information about where 'the frequency of heavy precipitation events has increased'. Is this a
consistent pattern globally, more pronounced in some latitudes than others, greater at higher than lower elevations, etc.?
[Govt. of United Kingdom (Reviewer’s comment ID #: 2022-24)]
SPM-383 A 6:21 6:22 The statement “The frequency of heavy precipitation events has increased, ...” may be taken to mean ‘everywhere,’ which
almost certainly is not true. Consider re-crafting this sentence with appropriate modifiers to provide a clearer statement
consistent with findings. Add the geographical qualifier (e.g., TS-21, line 7) “…in many land regions”. Also, shouldn’t there
be a likelihood qualifier here and throughout much of this page? Refer at minimum to Table SPM-1 in all relevant instances.
In this particular case, add “(see Table SPM-1)” after “increased”, so readers see the confidence level.
[Govt. of United States of America (Reviewer’s comment ID #: 2023-42)]
SPM-384 A 6:24 6:25 "Cold days, cold nights and frost have become rarer…" The word " rarer" is too tough, "less frequent" may be better. It can
also be related to "more frequent" of hot days.
[Govt. of China (Reviewer’s comment ID #: 2006-20)]
SPM-385 A 6:25 6:25 Change “rarer” to “less frequent” because “rarer” could describe spatial or temporal frequency. Do you mean “less
widespread” as well?
[Govt. of United States of America (Reviewer’s comment ID #: 2023-43)]
SPM-386 A 6:27 6:27 Add a bullet on midlatitude storms in view of the statement in SPM12, 32.
[Govt. of Netherlands (Reviewer’s comment ID #: 2014-10)]
SPM-387 A 6:28 6:28 The first sentence and first half of the second sentence are phrased in much weaker language than what is found in the TS and
table SPM-1. For consistency suggest they are replaced with "Globally, it is likely that the proportion of tropical cyclones
reaching the most intense categories has increased since 1970, although there is no clear trend in the total numbers of tropical
cyclones. This is correlated with....". In addition the footnote should include a statement that "The numbers of hurricanes in
the North Atlantic have, however, been above normal (based on the 1981 – 2000 average) in 9 of the years from 1995 to
2005."
[Govt. of Australia (Reviewer’s comment ID #: 2002-63)]
SPM-388 A 6:28 6:29 this sentence could be more precise, as the trend suggested by satellite data is quite strong, almost doubling the numbers of
categories 4 and 5 cyclones. We propose to say:"Satellite records suggest in all ocean basins a strong trend towards…"
[Govt. of France (Reviewer’s comment ID #: 2010-21)]
SPM-389 A 6:28 6:31 Replace by: ‘Data on trends in the number and intensity of tropical storms are inconclusive, although there are indications for
more intense storms since about 1970, correlated with higher tropical SSTs.’
[Govt. of Netherlands (Reviewer’s comment ID #: 2014-11)]
SPM-390 A 6:28 6:31 This paragraph could, perhaps, equally well be moved after the current Line 34. Or, is the meaning to convey that a change in
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