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Senior meteorologist with 18 years of experience at AccuWeather.
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Headline: Earth
Headline: Earth™:
Katie Fehlinger hosts Headline: Earth, which takes an unbiased look at all sides of the global warming debate. The weekly show features the latest headlines related to global warming, along with interviews of prominent and newsworthy guests, including global warming legislation advocate and chairman of the Environment and Public Works Committee (EPW), Senator (D) Barbara Boxer of California and global warming skeptic and former EPW chairman, Senator (R) James Inhofe of Oklahoma. Visit Headline: Earth's video page to see any or all of Katie's videos.


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July 30, 2007

Falling Ice Chunks Attributed to Global Warming?

Large chunks of ice, one weighing up to 50 pounds fell from the sky recently over Dubuque, Iowa. The larger chunks smashed through a woman's roof and ripped through nearby trees. The origin of the ice is still unknown, but authorities have theorized that the chunks either fell from an airplane or naturally accumulated high in the atmosphere since there were no thunderstorms nearby at the time. According to witness Karle Wigginton, the original chunk of ice was the size of a basketball, pure white in color and smooth in texture.

In the article from Pennlive.com, David Travis, a professor of geography and geology at the University of Wisconsin-Whitewater has studied this phenomenon and said it's possible that the ice could have been a megacryometeor, which is similar to a hailstone, but without the thunderstorm.

Travis' research team speculates the phenomenon could be linked to global warming, which could make the tropopause portion of the atmosphere colder, moister and more turbulent. Fellow blogger Jesse Ferrell blogged about a similar occurrence this past January (Giant Ice Block Smashes Car in Florida).

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Comments (27)

Jeff:

So NOW everything is caused by global warming? What happened to just weather?

JP:

Ice and preciptation needs condensation nuculei (usually microscopic clay particles) when changing over from a vapor to liquid/solid. Without convection and its turbulent mixing and violent updrafts, there is no way ice particles this large could continue to build before falling. What keeps hailstones from falling are forces that exceed the force of gravity -in the case of deep, violent convection it is updrafts.

Barring convection there is no physical explaination of basketball size ice stones. Ice stones the size of basketballs cannot form out of the blue. If the upper tropesphere was that saturated with moisture, thick cirrus stratus clouds would form, and the jetstream would deform those clouds (super cooled water droplets/ice crystals) and prevent any further ice build up. Witnesses stated that the skies were clear.

This story is absurd. There have been stories like this for decades, and researchers have confirmed that ice build up from high flying aircraft were resonsible -in many cases waste water is accidentally dumped from commericial aircraft.

Tom:

Another instance of the popular game "6 degrees of global warming".

EVERYTHING is evidence in favor of the 'global warming hypothesis'. Nothing is evidence against it.

Andrew:

This is more of a freak weather phenomium than an aspect of the climate.

While global warming involves warming and increased water vapor in the troposphere, the climatic effects will be noticed as increased precipitation. However, this is projected to be in only some portions of the globe; primarily Northern Europe, Canada and the Northeastern USA.

Andy:

I noticed that my dog had fleas the other day, it must be from global warming. Barry Bonds didn't take steroids to increase his strength and hit more home runs, it happened through global warming. That pet food poisoning was because of global warming.

Patrick Henry:

All 50 states have at least some weather stations reporting below normal temperatures for the year to date. Must be due to global warming.
http://www.hprcc.unl.edu/products/maps/acis/YearTDeptUS.png

Darren:

You know, you would think that with global WARMing, the big ice would have melted before it hit ground.

I can see the new Goreacle infomercial now, "...not only will we be drowned by rising sea levels, pummeled by big winds from super storms, but we will all have to continually look up to dodge global warming super ice-chunks just falling out of the sky for no other reason than big business, and of course, non-progressives, created them. Send me money immediately to stop BIG ICE!".

Rick Ressler:

There is a perfectly simple explanation to this - Al "Big Foot" Gore flushed the toilet in his gas guzzling, environmentally harmful private jet. I'm surprised the ice chunk wasn't larger!

Brett: This is hardly an "Effect of Global Warming." I would suggest creating a new category - "Unscientific Conjecture" and assigning reports like this one to it.

Paul:

Andrew,

You didn't mention the IPCC report. Could this (your failure to mention the aforementioned report) also be due to glo... the Modern Climatic Optimum?

Jonah:

Just for the record, the wastewater from commercial jets forms blue ice due to the sanitizer they put in it.

ted:

Of course the professor had to put in the Global Warming scenario. He is a professor of Geology and Geography. Up to this point those sciences were not getting the big AGW grants…..until NOW.
God bless American ingenuity and the scramble for the almighty grant money…..
……and when validating the AGW farce, science or plausability is neither appreciated or needed. The press and the lay public have made AGW a religion…. Pointing out nonsense is heretical. Mr. Gore has been pontificating for so long that I am sure he will be anointed the new Grande Inquisitor. Heretics beware

Thor:

This is ludicrous! Also if the air is cooling aloft then thunderstorm numbers should be increasing but the numbers don't support.

Travis:

Patrick,

It appears the chart you referenced also shows at least some weather stations in each state (only 48, actually--it doesn't show Alaska or Hawaii) reporting above average temperatures for the year to date. I fail to see your point unless you're simply trying to mock the AGW people.

Mark:

Travis is right. All 48 states have some stations above normal for the year.

Patrick Henry:

Travis,

One of my favorite hot spots on that map is the one in Tucson, Arizona - which is located in an asphalt parking lot baking in the desert heat.

About half the US is below normal for the year (despite the growth of urban areas), and about half is above normal. Just what you would expect in an average year. Australia and South America are having an exceptionally cold winter.

Hard to figure out exactly what Al Gore is talking about when he says the "earth has a fever" or where he plans to stick his thermometer once we have all been assimilated into the AGW borg.

Even more difficult to understand are the press releases from NOAA about this being the warmest year ever.

John Davis:

There are many well documented references of ice falls which are previous to the invention of the aircrafts.

Ice from icing processes has different physical, chemical and isotopic characteristics. Regarding aircraft lavatories, megacryometeors are not blue ice, and NO organic compounds were detected after their analysis by GC-MS.

Also, there are scientific articles about this topic which were publishes in very prestigious scientific journals. For instance, Science, Journal of Atmospheric Chemistry, Geotimes, Journal of te Human Environment, Journal of Chromatography, etc.

Likewise, there is a website in which you can find information about the progress of this investigation:

http://tierra.rediris.es/megacryometeors/index2.html

In my opinion, it is important to search for information in the scientific databases (e.g. web of science) before talking about a scientific question. I realize that all of you are extremely clever, but this is a recent investigation and perhaps you could learne something new.

More than 12 scientists were (and still are) involved in the study of megacryometeors. Perhaps one of them is stupid (even two), but the whole group is difficult (although not impossible).
Anyway, an important point is that they are giving their scientific results AFTER their study of the problem, and that they have published them (this is not easy) following the scientific procedure. Of course, it is much more easy to speak in a chat...


marc:

Is there a place I can get my weather forecasts without the unnecessary hysteria created by the global warming gangsters. I have stopped watching the weather channel...and this place apparently isn't far behind...

Travis:

Patrick,

Does the NOAA say that it's the warmest year ever in the United States, the world, or both? I'd also like to point out (relevant or not) that the west half of the country plus the upper plains states were significantly above average (note the large amounts of orange on the map). It would also appear that the cooler than normal temps across Texas, New Mexico, Oklahoma, and Kansas are due to the fact that they have received 10-20+ inches of rain above normal in the past six months due to a steady influx of warm, moist air from the Gulf of Mexico. As I recall, that caused quite a bit of flooding throughout that area.

Aside from those three states, the only place in the country with consistently below normal temps is the Northeast, a relatively small part of the country.

Temps:
http://www.hprcc.unl.edu/products/maps/acis/YearTDeptUS.png

Precipitation:
http://www.hprcc.unl.edu/products/maps/acis/6mPDeptUS.png

JP:

"All 50 states have at least some weather stations reporting below normal temperatures for the year to date. Must be due to global warming"

GISS data shows a downward trend since the middle of Jan for most of North America.

Emiliano:

"Australia and South America are having an exceptionally cold winter." hahahahaha! LOL!

Patrick Henry, what are you talking about? You always talk about the Southern Hemisphere and what you say is just wrong. It's 22�C where I live in Argentina; is that cold?. Check www.wxmaps.org and the 15-day outlook for Australia and New Zealand, and notice it's not "exceptionally cold" and same in South Africa... guess what, snow falls in those places because there are mountains there. This is the bitterly cold weather Patrick talks about:

http://www.weather.com/outlook/travel/businesstraveler/tenday/ASXX0023?from=36hr_topnav_business

And I also checked accueweather's forecast to confirm that Australia is going into a new Ice Age...lol!

http://www.accuweather.com/world-forecast-15day.asp?partner=accuweather&traveler=0&locCode=OCN|AU|ACT|CANBERRA&metric=1 that's AVERAGE patrick!

Anything that supports your position, Patrick?

Tom:

"Unscientific Conjecture"????

This would contain all of the "scientific" literature on AGW!

Tom :

John Davis - "Travis' research team speculates the phenomenon could be linked to global warming, which could make the tropopause portion of the atmosphere colder, moister and more turbulent."

This is not the peer-reviewed, published result of a scientific study. This is groundless, self-serving speculation.

mark l:

Emiliano,
Actually australia is below normal over the last three months on average. It was also extremely cold during june in australia.. Travis , the western u.s is below normal for the summer so far and california is very close to some records for the cool summmer.. Sacramento and the interior of california is having the second coolest summer in the last 50 years.. The u.s as a whole is well below normal also.. global warming is awesome

John Davis:

Tom:

About tropopause colder, moister and more turbulent:

Science 25 July 2003:
Vol. 301. no. 5632, pp. 469 - 470
DOI: 10.1126/science.1086051

Climate Change at Cruising Altitude?
Brian J. Hoskins

"...The tropopause is important on a daily
basis because it puts a lid on tropospheric
convection. It also plays a very active role in
the development of large weather systems:
One classic view of the growth of weather
systems involves the interaction of waves
propagating on temperature gradients at the
the tropopause in the equatorial region...."

The analysis of Santer et
al. suggests that over the past 20 years, the
observed globally averaged tropopause
height has risen by ~200 m. Their model
results show that this rise is consistent with
the changes in natural and anthropogenic
forcings over this period, and that greenhouse
gas and ozone changes are mostly responsible
for it. Continuing changes in the
properties of the tropopause as a result of
human activity could have wide-ranging
implications because of its physical and
chemical roles in the climate system.

About the significance of water vapor in the climate system:

WATER VAPOR in the CLIMATE SYSTEM
Special Report. December 1995
Copyright 1995 by the American Geophysical Union, 2000 Florida Ave., N.W., Washington, DC 20009.
http://www.agu.org/sci_soc/mockler.html

Travis:

Mark l,

If you could please provide some reference to show that temps in the western US are below normal so far this summer...what I found seemed to show exactly the opposite. I'm not saying that no record lows have been challenged, but certainly it seems the average trend has been upward.

http://www.hprcc.unl.edu/maps/index.php?action=update_daterange&daterange=Last1m

http://www.hprcc.unl.edu/maps/index.php?action=update_daterange&daterange=Last3m

Mark:

"the western u.s is below normal for the summer so far"

Really? Northern Nevada had their second warmest July on record. Montana and Idaho are having their warmest summer on record, including their warmest July on record.

Think before you type.

Tom:

John -
"Their model results show"...

Also, if you read the AGU link you provided, you will see they admit they do not have the necessary data on atmospheric water vapor to test their models.

Speculation, bad data and make-believe computer models.

This is not science.

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