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<blockquote data-quote="Dawei" data-source="post: 1687658" data-attributes="member: 463433">Hurricane strength has long been understood to correlate quite tightly with SST:http://www.gfdl.noaa.gov/~tk/glob_warm_hurr/Fig_PDI_SST.htmlRecently someone used this data to conclude that global warming has no effect on increasing hurricane strength/number: http://www.nhc.noaa.gov/pastdec.shtmlThe data is specifically for the number of US hurricane strikes. But it seems obvious that, while this specific variable may not be increasing, the total number of hurricanes is:http://www.gfdl.noaa.gov/~tk/glob_warm_hurr/Fig_Hurr_major_USland_count.htmlTastiness of cherries aside, is there any good reason to focus only on &quot;number of hurricanes which strike the US&quot; and not on an increase in hurricane strength/frequency as a whole?By the way, for the first graph: &quot;PDI is a combined measure of Atlantic hurricane frequency, intensity, and duration.&quot;http://www.gfdl.noaa.gov/~tk/glob_warm_hurr_webpage.html#section1</blockquote>

[QUOTE="Dawei, post: 1687658, member: 463433"] Hurricane strength has long been understood to correlate quite tightly with SST: http://www.gfdl.noaa.gov/~tk/glob_warm_hurr/Fig_PDI_SST.html Recently someone used this data to conclude that global warming has no effect on increasing hurricane strength/number: http://www.nhc.noaa.gov/pastdec.shtml The data is specifically for the number of US hurricane strikes. But it seems obvious that, while this specific variable may not be increasing, the total number of hurricanes is: http://www.gfdl.noaa.gov/~tk/glob_warm_hurr/Fig_Hurr_major_USland_count.html Tastiness of cherries aside, is there any good reason to focus only on "number of hurricanes which strike the US" and not on an increase in hurricane strength/frequency as a whole? By the way, for the first graph: "PDI is a combined measure of Atlantic hurricane frequency, intensity, and duration." http://www.gfdl.noaa.gov/~tk/glob_warm_hurr_webpage.html#section1 [/QUOTE]

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