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This Week, Global Warming = Hurricanes

I hope you have a score card at home. You've been told the science was settled and Global Warming causes hurricanes but that was before the 2006 hurricane season was a dud so the global warming hucksters made a new theory that Global Warming reduced hurricanes.

But either this week's folks didn't get the memo or the grant they received was to prove hurricanes where caused by global warming, but whatever the reason, we have another bogus study on our hands...

Study blames climate change for hurricane rise

By Jim Loney
MIAMI (Reuters) - The number of Atlantic hurricanes in an average season has doubled in the last century due in part to warmer seas and changing wind patterns caused by global warming, according to a study released on Sunday. ...

The new study, published online in Philosophical Transactions of the Royal Society of London, said the increased numbers of tropical storms and hurricanes in the last 100 years is closely related to a 1.3-degree Fahrenheit rise in sea surface temperatures. ...

In the new study, ... researchers found three periods since 1900 when the average number of Atlantic tropical storms and hurricanes increased sharply, and then leveled off and remained steady.

They did?

OK, let's disembowel this study in as few words as possible. I must be getting old as it took 2 google searches to do it. But on the other hand I got a great graphic form Wikipedia on the number of Atlantic hurricanes and tropical storms.

North_Atlantic_Hurricane_History.png
Go ahead, click on it for full size

While your eyes might be looking at the blue line, or even the green, that's not the most important part of this graphic. Look at the top. The top shows what methodology we used to find hurricanes when. Hint: We didn't have weather satellites in 1900.

Taking the last 10 years off the table, you see quite clearly that the number of storms recorded doubled not from global warming but because of the technology used to find them. A perfect example of this can be found with Hurricane Vince in the infamous 2005 hurricane season. There is zero percent chance that would have been recorded in 1900.

Also, recorded storm intensity increases with better technology. We now try to measure pressures right at the eyewall while they are still over open water. We didn't even know to do that 30 years ago.

But I know what some of you (cough liberal trolls cough) are thinking, so I won't stop there.

Now let's look at the last 50 years. There was a profound spike when we started using aircraft. If you look carefully we've been well below those numbers thru the 1960s, 70s, 80s and most of the 90s. Also notice this graphic is smoothed so the 1992 and 2005 hurricane seasons weights it. Let's look at that...

Tear your eyes off the big bold lines and look at the jaggy lines in the back. You'll see the 10 year weighted average is skewed by the 1992 and the 2005 seasons. You'll also notice this graphic DOES NOT yet include the 2006 season which as I linked above was almost non-existent. That would bring the 10 year average (the bold line) back down.

A simple look at the red line shows that we're barely back to 1950 levels.

An honest look at the graphic reveals that the RECORDED number of hurricanes has indeed doubled in the last 100 years... But not because of global warming, but because we now have the technology to watch every corner of the globe. Correlation does not imply causation but here we don't even have correlation.

In short, this "study" is completely bogus.

Update: I cited Hurricane Vince from memory above as an example of a hurricane that would have been missed in the past. And below the jump I speculate that 1933 had more storms than 2005. Turns out I barking up the right tree.

Chris Landsea was already way ahead of me. (pdf) Here is a graphic I snipped from his pdf that shows 1933 vs 2005.

2005v1933.jpg
Click it!

It shows the "missing" hurricanes from 1933. Enlightening to say the least.

(And I have another interesting note on this chart after the jump.)

So 2005 was the worst tropical storm season in history right? Let's give that a qualified maybe.

Look at the blue spikes in 2005 and then back at (what I'll guess are) 1887 and 1933. Now consider there was only about 6 fewer storms recorded in 1933 than 2005 but that was before we had aircraft, radio or satellites to track the storms. The 1887 season is also incredible considering the recording methods of the day.

We'll never know for sure, but it is quite plausible that 2005 not near was the worst year in history.

And lastly, for you die-hards, read the Wikipedia description of this graphic... It destroys the notion: (em mine)

For more than half the record, it is likely that hurricanes were undercounted due to the failure of any trained observer to encounter the storm. Similarly, the intensity may be understated if no observer encountered the eye wall. The fact that hurricanes often obtain their strongest state in the open ocean only increases the possiblity that past storms were miscategorized, though hurricane reanalysis projects do attempt to estimate likely storm intensities. Symptomatic of this, only 5 of the 36 Category Five storms observed in the North Atlantic were reported prior to the use of aircraft in studying hurricanes. In contrast, the techniques used to study storms in the past (e.g. inferring wind intensity from pressure and/or size of waves) may also have overestimated some storm intensities (Emanuel 2000). For many purposes, only the record known since the availability of satellite imagery in the 1960s is considered sufficiently reliable for analysis. It should also be noted that only in the North Atlantic does any attempt at systematic records exist for periods earlier than the 1940s.

This study belongs on Mythbusters.

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Comments (92)

And yes mantis, I went off ... (Below threshold)
Paul:

And yes mantis, I went off the reporter's version of the report and not the actual report itself...

There is reasons for that.

#1 time. This post took 1 hour and 13 minutes to compile. (I work slow) I simply don't have time (unless you're paying me) to read every study.

(but post it and if time allows I'll debunk it too)

#2 The public does not read the study, they watch the news. So that's the "important" part in public debate terms... This story or some flavor of it will run in thousands of media outlets, I'm doing my little part to call bull shit on it.

#3 It is getting VERY COMMON for "scientists" to issue press releases that say one thing but their work really does not support it. I find it impossible to believe that all these poor climate scientists are victims of bad reporting - all in the same direction. -- No the people who did the study cultivated the press coverage and they got what they wanted. THE MEDIA DOES NOT read the studies before they report on them, they read the press releases.

And yes, I started typing this before anyone even posted.

Gerlich and Tscheuschner ma... (Below threshold)
kim:

Gerlich and Tscheuschner may have the little article that could.

icecap.us/images/uploads/Falsification_of_CO2.pdf

They claim the IPCC is desperately mistaken with their Greenhouse Gas Theory, and that it violates the 2nd Law of Thermodynamics.

This is a difficult paper, but the physicists are getting excited.
================================

I suspect you're right, Pau... (Below threshold)
kim:

I suspect you're right, Paul, this study is an artifact of observation.
====================================

One wonders what led them t... (Below threshold)
kim:

One wonders what led them to the 'confident conclusion' they mention at the end of the article. I note the article sticks in a lot of IPCC stuff which did not come from the study.
=========================

Oh Kim, the reporter idiot ... (Below threshold)
Paul:

Oh Kim, the reporter idiot (Jim Loony) clearly considers himself an environmental ranger. There is a more balanced version I saw later.

You're right, he quotes IPCC more than this study. Not surprising considering how intellectually lazy he is...

Really his newsroom can't get wikipedia?

BTW- Another thing I found ... (Below threshold)
Paul:

BTW- Another thing I found interesting for those of you in the comments....

Did you notice a dip during World War One....

Another during the Great Depression then a spike while we where fighting WWII and Korea?

I wonder how historical events skewed the numbers... especially during the depression there where less ships at sea and during WWII a large increase.

dunno, but interesting.

Well, Saddam increased albe... (Below threshold)
kim:

Well, Saddam increased albedo setting Kuwait on fire, and I'm sure there is a researcher somewhere who can link, even correctly, man's efforts during wars and economic exigencies to climate, or at least to weather.

I don't think those social events changed hurricanes, but like you, I don't know, and sometimes correlations do mean causal links.
=============================

I'd like to see the origina... (Below threshold)
kim:

I'd like to see the original paper and see how they address the improved reporting. Surely they did. Surely.
=============================

I think you have to be a me... (Below threshold)
kim:

I think you have to be a member to get it. Oh, well, it's horseshit, anyway.
=====================

This fits nicely with the f... (Below threshold)

This fits nicely with the front page story in our local rag about how global warming, sorry, specifically anthropogenic global warming (they were specific) is causing trees to grow faster. They even show a cut tree with the rings visible and, indeed, on the tree they show there are some larger rings towards the outside...of course the ones at the very outside, past 5 or so years, are very, very small. The obvious conclusion they draw? Anthropogenic global warming is making trees grow too fast so they will die faster. I can see it now, trees shooting up during the day, choking on our carbon dioxide, and all night long we're kept awake by the overinflated trees blowing to pieces.

Only one solution as I see it to abate the exploding tree apocalypse upon us - pave the earth.

Paul,I hate to tel... (Below threshold)
Heralder:

Paul,

I hate to tell you, but you're absolutely mistaken....so are the scientists.

The hurricanes are Bush's fault. So is global warming.

See, I feel better now. Blame everything on one guy and the world seems so simple!

"Did you notice a dip durin... (Below threshold)

"Did you notice a dip during World War One....

Another during the Great Depression then a spike while we where fighting WWII and Korea?

I wonder how historical events skewed the numbers... especially during the depression there where less ships at sea and during WWII a large increase."

Paul, I've wondered about that as well. I wonder if it had something to do with the military controlling meteorlogical info during those times (especially WWI and WWII.) I've never found out if the Best Track datasets included military records or not. I tend to think they did not, as I think I would have seen a reference to it...but I'm not sure.

I love how in the MSM if you dispute these, as Kim said, horsehit "findings" you are a skeptic. In reality it is these two researchers who are far outside the prevailing scientific opinion.

Shouldn't THEY be the skeptics?

Do you realize heralder how... (Below threshold)
WildWillie:

Do you realize heralder how many people dies from Bush's hurricanes? It has to do with Halliburton, oil and Cheney. Maybe Rove also. For sure the 8 fired USA's.

As far as Global Warming, it looks like Algores scam is falling apart. ww

Do you realize her... (Below threshold)
Heralder:
Do you realize heralder how many people dies from Bush's hurricanes?

Not as many as from Bush's World War II, Bush's Korean War and Bush's Vietnam.

It has to do with Halliburton, oil and Cheney. Maybe Rove also.

Whaddya mean maybe Rove? That guy can make someone's nose bleed just by winking at them.

Paul, as much as I agree wi... (Below threshold)
D-Hoggs:

Paul, as much as I agree with your stance, the second anybody relies on Wikipedia for proof of their argument, for me, their argument goes straight out the window. Could you shed a little light on why you trust it so much? I'm not trying to break balls here, but I just really hate that Wikipedia is used as evidence by so many, when anyone can get on that site and change what they like.

Oh yes according to the env... (Below threshold)
spurwing plover:

Oh yes according to the envromentalists wackos 2006 was suppost to be the worse hurricane season ever becuase of GLOBAL WARMING and it fizzled they claimed that 2006 hurricanes would make KATRINA look like a summer breeze whata bunch of blabbering idiots and the biggist amount of HOT AIR around comes from AL GORE,GREENPEACE and the rest of the global warming advocates. And to think their jerks at GREENPEACE wanted them to name hurricanes for various industries they claim were cuasing global warming GREENPEACE SUCK ENVROMENATL DEFENSE SUCKS

>Paul, I've wondered about ... (Below threshold)
Paul:

>Paul, I've wondered about that as well. I wonder if it had something to do with the military controlling meteorlogical info during those times (especially WWI and WWII.)

I dunno, remember, they aren't exactly static.. the numbers might be completely accurate.

But if ships = sensors and the number of ships changes from a low point to a high point in 10 years, it seems logical that more sensors = more storms.

If I had to gun to my head I'd guess the data was skewed by the number of sensors but in reality we don't have enough data to get more than a hunch.

To quote the tootsie roll pop commercial, "The world will ever know."

D-Hoggs..Don't knock Wikipe... (Below threshold)
Steve Crickmore:

D-Hoggs..Don't knock Wikipedia unabashedly. "The Bible was the world's first Wikipedia article".

Paul, as much as I agree... (Below threshold)
Paul:

Paul, as much as I agree with your stance, the second anybody relies on Wikipedia for proof of their argument, for me, their argument goes straight out the window. Could you shed a little light on why you trust it so much?

If you notice, I didn't quote the verbiage (interpretation) I only used them as the source for raw numbers. (I did put the verbiage in the "bonus section" by I wrote my own in the regular post.)

Look- Everything written by the hand of man is fallible. - Look at this news story for example.

Do I trust Wikiedia to have valid raw data? Well, admittedly, I'd love to have gotten the graphic from NOAA but the bottom line is I think it is reasonable to assume the data (that they sourced in the footnotes) was accurately represented.

I'm not trying to break balls here, but I just really hate that Wikipedia is used as evidence by so many, when anyone can get on that site and change what they like.

Here is my personal thing about Wikipedia; I NEVER go there for anything political. If the truth be told, this is borderline in my value system.... (being tangentially related to GW with is solely a political event)

But let me say this about "anyone can get on that site and change what they like." I know it feels funny but that is the future and I think for the better. "Open knowledge" is sooooooo much better than single source.

Or put another way, a bad day on Wikipedia beats a good day on Pravda. KnowhatImean?

Al Gore lied, Hurricanes di... (Below threshold)
Heralder:

Al Gore lied, Hurricanes died?

Steve Crickmore, fascinatin... (Below threshold)
Paul:

Steve Crickmore, fascinating article. I know squat about the bible so I'm not qualified to comment on it bt it was still fascinating.

FYI:<a href="http:... (Below threshold)
BC:

FYI:

Historical record of named storms.

Yellow bars depict total number of named systems, including tropical storms, green bars are hurricanes, and Cat 3 or greater hurricanes are in red.

-BC

Paul says If I had to g... (Below threshold)

Paul says If I had to gun to my head I'd guess the data was skewed by the number of sensors but in reality we don't have enough data to get more than a hunch.

To quote the tootsie roll pop commercial, "The world will ever know."

We may not have the data (how can you ever fill in the blanks from unobserved storms?), but you can clearly delineate the logical holes when you treat the Best Track data as "the entire story."

Anyone who doesn't learn the lesson Landsea pointed out simply isn't being serious. (Hell, even I figured this out before Landsea published his piece on undercounts in the data set.)

Given what we DO know we can still say this new study is bunk, without breaking a sweat.

Anybody know if the Mann re... (Below threshold)
gmax[TypeKey Profile Page]:

Anybody know if the Mann referenced in the Landsea article linked above by Horton is one and the same Michael Mann of global warming "hockey stick " fame? If yes, anyone surprised that he tries to explain away the improvements in observation with some mumbo jumbo about shipping lanes? This is a scientist?

Whew, I was about to post f... (Below threshold)
kim:

Whew, I was about to post for Paul that he had support from Landsea, but I should have said "Relax, Horton's got your back".
============================

Welcome Rich anyone who pen... (Below threshold)
Paul:

Welcome Rich anyone who pens,

Oh, I found that most important piece of present day "science"...the press release. Plus it's handy helper, the guide for idiot journalists. (So you can hold their hands when you tell them what to print.) But the actual study itself? Who needs it?!. Ah science.

Is ok in my book.

Anybody else notice that th... (Below threshold)

Anybody else notice that the Philosophical Transactions of the Royal Society is functioning like a leftist political journal out of Paris in the days of yore?

It was only a couple of weeks ago that they announced (in a non-peer reviewed piece) that the question of solar influence on climate was settled (by a single study no less.) It is like reading the tea leaves of the Soviet politburo.

Hey, the Queen knighted Ric... (Below threshold)
kim:

Hey, the Queen knighted Richard Armitage. Royal don't mean what it useter.
========================

shame on you Kim<a... (Below threshold)
Paul:

shame on you Kim

http://www.google.com/search?num=100&hl=en&safe=off&q=mann+emanuel+2006&btnG=Search

BTW thanks BC for the chart, looks the same. Ugly but the same numbers.

Welcome Rich, anyone who... (Below threshold)

Welcome Rich, anyone who pens...Is ok in my book.

Thanks Paul. That is the sort of thing I write when I'm agitated AND have had a couple pots of Earl Grey.

This week hurricanes = ... (Below threshold)
Jo:

This week hurricanes = global warming

And this week democrats = stupid.

But that is something that doesn't change from week to week.

William Gray in the 7/26 WS... (Below threshold)
kim:

William Gray in the 7/26 WSJ thinks that Atlantic thermohaline circulation is the cause of the increase since 1995.

Right, Paul. Mann and Emmanuel are charter members of the climatology echo chamber.
==========================

IF I listened to the GW ala... (Below threshold)
John F Not Kerry:

IF I listened to the GW alarmists, my head would be spinning. Like in 1984 , the reality is what THEY say it is. Solar activity has NO effect on climate change? Sure, that sounds believable. More hurricanes because of GW? Of course! Less hurricanes because of GW? Brilliant! Aside from the pseudo-science, the leaps in "logic" are almost death defying.

Paul wrote:BTW ... (Below threshold)
BC:

Paul wrote:

BTW thanks BC for the chart, looks the same. Ugly but the same numbers.

I think my chart is the one the Wikipedia ones are based on -- they plotted out and then did some curve fitting to get the 3 separate curves.

The overall trend has been an uneven, but gradual increase in the number of hurricanes. This is sort of a statistical thing -- hurricanes are powered by the temperature differential between the warm ocean water and the cold upper level atmosphere. So an increase in the average ocean temperatures would increase the probability of tropical storms becoming hurricanes, and a Category 1 hurricane becoming a Cat 2 and so on.

The rise in the global mean temps have been on the order of about 2 degrees Fahrenheit since the turn of the century. That's not a whole lot to drive up the probabilistic numbers for number and likely intensity levels of hurricanes. Also a key concept of global warm