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JASON COLEMAN

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A structural engineer with a love for tech, politics, science, and culture.
Articles Posted: 8  Links Seeded: 1601
Member Since: 1/2006  Last Seen: 8/04/2011

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Stronger Link Found between Hurricanes and Global Warming

Seeded on Tue Jul 31, 2007 11:03 AM EDT
Read ArticleArticle Source: Sciam
science, climate-change, global-warming, climate, hurricanes, meteorology
Seeded by Jason Coleman
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A century's worth of records suggests that hurricanes are on the rise and a warming Atlantic is to blame

Using records dating back to 1855, hurricane researchers say they have uncovered an ongoing rise in the number of Atlantic hurricanes that tracks the increase in sea surface temperature related to climate change. Critics of such a link argue that this trend is merely because of better observations since the dawn of the satellite era in the 1970s. But the authors of the new study say the conclusion is hard to dodge.

"Even if we take the extreme of these error estimates, we are left with a significant trend since 1890 and a significant trend in major hurricanes starting anytime before 1920," say atmospheric scientists Greg Holland of the National Center for Atmospheric Research in Boulder, Colo., and Peter Webster of the Georgia Institute of Technology in Atlanta.

Update: You can read Holland and Webster's full paper here. [.pdf]. Chris Landsea (specialist with the National Hurricane Center) post a rebuttle here [.pdf] (interestinly enough, prior to the paper's release). Further discussion on both items can be found at Chris Mooney's blog, The Intersection.

More on this news item at National Geographic and New Scientist (UK). For further information, please see the links to the researchers' pages included above. Also, see Chris Mooney's recent book Storm World for more on the history of hurricane study, meteorology and climate science (my current reading).

[I'm going to be very strict in whatever I post here in the future. The public discussion for this seed is for related links and discussion of the science only. Non-related items, friendly or not, will be deleted unless relegated to a separate discussion. In other words, if you feel a need to comment on me or deny otherwise sound science, then clip this to some other group and start a new, private thread. Otherwise, your comment will be deleted. You have been warned. If you are in doubt, then don't post your comment.]

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  • Groups: Climate Change, Earth Signs, Newsvine Science, Science And Technology
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  • Public Discussion (8)
Eco-geek

Haven't seen you on the vine for a while, Jason. Welcome back.

  • 1 vote
Reply#1 - Tue Jul 31, 2007 11:11 AM EDT
Jason Coleman

Eco-geek: For various reasons, I've become a more passive user. I realize you posted this comment prior to my including some comment rules for my column. I do sincerely appreciate the sentiment but if you would, please include comments in a different discussion thread (friend, private, etc.) from here on. Thank you.

  • 3 votes
#1.1 - Tue Jul 31, 2007 11:28 AM EDT
Reply
Jason Coleman

While I think this appears to be a clear (and expected) result, much more research is needed in this area (we simply cannot base any policy off of one or two research results until they are verified). Further, the most useful result of this research will be warning signs for so many Americans who choose to live in hurricane prone areas. Even if hurricanes are not affected by warmer, expanding oceans (which they most likely are), billions upon billions of dollars of damage is simply waiting to occur all along this country's coastlines. As a structural engineer, I have the capability to design new structures or provide modifications to existing structures which help to reduce the damage from hurricanes. However, it is my personal opinion that it is simply poor planning for so much growth in the path of what we know are going to be some monster storms.

  • 4 votes
Reply#2 - Tue Jul 31, 2007 11:24 AM EDT
Colorado BobDeleted
Colorado Bob

"In 2005 we had 27 major storms, the most ever measured. But six or seven of them were exclusively in the central Atlantic," notes William Gray, a meteorologist at Colorado State University in Fort Collins. "The record it broke was 1933 that had 21 major storms, but there was no satellite or aircraft data then. Had they had those measurements we probably would have had a comparable number of storms that year."

If you're Gray, there were no ships in the Atlantic in the summer of 1933, therefore no ships logs.

  • 3 votes
Reply#4 - Tue Jul 31, 2007 3:09 PM EDT
Colorado Bob

One of the best sites for following the Atlantic Basin. Very rich graphics, all the models etc.

The Storm Track

  • 1 vote
Reply#5 - Tue Jul 31, 2007 3:37 PM EDT
Jason Coleman

Bob thanks for the link. I did however, delete one of your above comments as the link provided was just an unrelated animated .gif. My goal, as stated above, is to limit the public discussion thread science only.

As for Gray - I think, on this point, he may have some valid reasoning (with caveats as follows). Ships logs may well have records of storms but that data may not translate into being part of the hurricane database records. Now, this is not to say that such information couldn't be teased out of a larger data set. For instance, in attempting to determine the magnitude of earthquakes prior to modern instrumentation (or modern magnitude scales, for that matter), historic records of observations and damage are correlated to what we see in known events. With a large enough data set, we can get a pretty good picture of both the epicenter and magnitude of earthquakes that occurred in the 19th century. I think that use of ships logs (particularly during WWII, with it's no doubt increased traffic across the Atlantic) and similar sporadic information might allow us to piece together a much better idea of the storms there.

All the same, as Chris Landsea points out in his rebuttal (see above links), the difference between missing and average of 2 storms per season and just over 3 storms per season in the earl part of the 19th century makes the curve essentially disappear. This might be a set of data which we simply cannot make statistically significant use of. I, for one, though, am interested in seeing what other proxy methods that are developed to try and make sense of it.

Tying global warming to more tropical storms (or just more intense tropical storms) aside, I certainly do agree with Landsea, Curry, and others in that even if the storm threat stays constant over time, the increase of human population in storm prone areas dramatically increases the overall hazard.

(Also see this related link on the topic in my column)

  • 2 votes
#5.1 - Wed Aug 1, 2007 12:42 AM EDT
Reply
Colorado Bob

One thing that we will see is phenomena we've never seen before, on the order of The Nameless Hurricane

Editor's note (April 7, 2003): This hurricane was too important to remain anonymous for long. The people of Brazil themselves have named it, unofficially, Hurricane Catarina, after the southern Brazilian state of Santa Catarina where the storm made landfall.

Historical records show no sign of any tropical cyclone ever making landfall on the Iberian Peninsula. Well, have we got a treat for you! Vince made landfall over Spain today, becoming the first tropical cyclone ever to do so!

I saw a seed a few weeks back on a study that was saying cyclones in the Mediterranean may soon be possible.

------------------------------------
One of the events, I've tried to keep my eye on is the heat story this spring and summer. Montana is going to shock people.
The numbers there are just off the charts for July :
Missoula -
AVERAGE MONTHLY: 78.1
DPTR FM NORMAL: 11.2

Days of 90 or above : 30
Days of 100 or above : 11

  • 2 votes
Reply#6 - Wed Aug 1, 2007 7:47 AM EDT
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