Libertarians for junk science

February 21, 2010

Yeah, I agree — but ask yourself, you who call yourselves “libertarian” or “skeptic,” why you’re not asking the same questions?

From the Murph Report, “Libertarians for junk science.”  From a guy named Kevin Carson, a self-described anarchist — and voice in the wilderness.

He discusses the unthinking acceptance political libertarians and conservatives give to all stories against  doing something about global warming, and about DDT’s problems.


Another warming contrarian who can’t/won’t shoot straight

February 12, 2010

Joanne Nova is, I gather, a former television personality in Australia now blogging away against science and the study of climate change at JoNova.  Here’s how far off the track she is:  She’s been sucked in by Monckton,  as some great scientist and hero — he whose biggest achievements are to call scientists “bedwetters” and attack the reputations of famous dead women (what is it about Monckton and dead women?).

Her latest post is a hoot. She’s claiming that the case for global warming is coming apart.  She illustrates it with this PhotoShop™ masterpiece (note the “JoNova” in the lower lefthand corner, and note it well):

JoNova's PhotoShop of Glen Canyon Dam for an article on wildly inaccurate claims about climate change; original photo copyright by Wild Nature Images.

JoNova defaces photo of Glen Canyon Dam. Original photo copyright by Wild Nature Images.

Glen Canyon Dam poses problems for serious advocates of environnmental protection for many reasons, not the least being the death of Glen Canyon.  This dam represents one of the greatest losses of the environmental movement.  That’s not why Nova chose the photos, I’m sure — I’d be surprised if she could find Glen Canyon on a map, and I’m all but certain she’s clueless about the controversy about the dam (don’t even wonder whether she’s ever read Ed Abbey).

Regardless where one stands on the issues around Glen Canyon Dam, one cannot look at this photo without seeing the white stripe from the water behind the dam, running about 50 feet up the canyon walls.

Check out the original, copyrighted photo here, at WildNatureImages.com (and maybe buy a copy — it’s a great photo of the dam, Lake Powell and the area; no bluer sky anywhere).  I presume that, even with the huge “JoNova” on it, Nova will allow free duplication of her original work; but why didn’t she credit the guy who took the photo (Ron Niebrugge) and the people who put it on the internet for her (WildNatureImages.com)?  Update:  Nova is giving credit, now.

The original, without comment, is at once more beautiful, more awe-striking, and more accurate a portrayal of the effects of climate than Nova’s doctored version:

Glen Canyon Dam - photo by Ron Niebrugge, at WildNatureImages.com

Glen Canyon Dam, photo by Ron Niebrugge, at WildNatureImages.com. Displayed here with express written permission.

See, climate change is thought to be one of the culprits for that white line. Glen Canyon Dam is in straits right now, as is the Colorado River Compact that created the legal justification for constructing the dam, because precipitation in the mountains where the Colorado River is born has fallen dramatically in the past couple of decades — and Lake Powell has shrunk to a vestige of its former self, of its planned extent, of the extent hoped for in cooler times.

Lake Powell's drop, circa 2008, photo by Marco Ammannati via National Parks Traveler

Lake Powell's drop, circa 2008, photo by Marco Ammannati via National Parks Traveler. Caption from National Parks Traveler: "At Glen Canyon National Recreation Area, years of drought, possibly an indicator of climate change, have revealed Lake Powell's bathtub walls. Spring runoff, however, could soon make those bathtub walls vanish."

JoNova uses a photograph showing the harms of climate change, to claim that climate change does not occur.

Is this the stupidest anti-climate change statement ever made?

Offer your candidates for dumber or stupider claims below.  It’s time we started counting and cataloging.

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Eugenie Scott defends science, education, and evolution, in the Bone Room

February 5, 2010

It’s 30 minutes, and 30 minutes well-spent.


MSM understand dangers of warming

February 1, 2010

Editorial in the St. Louis Post-Dispatch, another of America’s great legacy of great newspapers:

The decade that ended in 2009 was the warmest on record, NASA reported earlier this month. It displaced the decade of the 1990s as the warmest ever. The 1990s displaced the 1980s.

Last year was the second-warmest since 1880, when modern temperature measurements began. The warmest year on record was 2005. All of the 10 warmest years on record have occurred since 1998. Perhaps you’re starting to see a pattern.

Tip of the old scrub brush to Open Mind, who also notes that the last decade was the warmest ever.


Wattsupgate: Denialists claim all knowledge is wrong

January 31, 2010

It really is that bad.  Climate science denialists now attack any information simply for not being what they want it to be.  Lysenko’s Ghost smiles broadly.

Anthony Watts is just the most prominent of the bloggers making hoax charges of error and worse in the fourth report from the Intergovernmental Panel on Climate Change (IPCC), because of a footnote that cites a rock climbing magazine.

Here’s the trouble for Watts:  There is no indication that the citation is in error in any way.  Watts’s move is more fitting of King George III’s campaign against Ben Franklin’s lightning rods, the prosecution of John Peter Zenger, the pre-World War II campaign against Einstein’s work because he was born a Jew, or the hoary old Red Channels campaign against Texas history told by John Henry Faulk.  It’s as bad as the Texas State Board of Education’s attack on Brown Bear, Brown Bear, What Do You See? Watts’ and others’ complaint is simply that Climbing magazine’s story on the worldwide retreat of glaciers suitable for climbing is not published in a juried science journal.

In other words, they indict the science, not because it’s wrong — they have no evidence to counter it — but because it’s too American Patriot correct Jewish left Texan mistakenly thought to be political well-known, too accessible, (small “d”) democratically-reported.

And of course, any comment that points that out at Watts’s blog goes into long-term “moderation,” keeping it from the light of day in the best tradition of the Crown’s defense of Gov. Cosby’s misadministration of New York (see “John Peter Zenger”).  Watts said in a quote that should have been attributed to the Daily Telegraph:

The IPCC’s remit is to provide an authoritative assessment of scientific evidence on climate change.

In its most recent report, it stated that observed reductions in mountain ice in the Andes, Alps and Africa was being caused by global warming, citing two papers as the source of the information.

However, it can be revealed that one of the sources quoted was a feature article published in a popular magazine for climbers which was based on anecdotal evidence from mountaineers about the changes they were witnessing on the mountainsides around them.

The other was a dissertation written by a geography student, studying for the equivalent of a master’s degree, at the University of Berne in Switzerland that quoted interviews with mountain guides in the Alps.

The revelations, uncovered by The Sunday Telegraph, have raised fresh questions about the quality of the information contained in the report, which was published in 2007.

It comes after officials for the panel were forced earlier this month to retract inaccurate claims in the IPCC’s report about the melting of Himalayan glaciers.

By those standards, Watts’s own readers should eschew his blog — it’s not peer reviewed science by any stretch, and Watts isn’t an established authority in climate science (he’s not even working for an advanced degree).  Consistency isn’t a virtue or concern among climate change denialists.  Watt’s entire modus operandi is much more anecdotal than the story in Climbing, which was written by a physicist/climber who studies climate change in the world’s mountains.

And did you notice?  They’re whining about research done by a scientist in pursuit of a degree, complaining about the second citation.  That’s the exaclty kind of research that they claim the magazine article is not.  Their complaint is, it appears, that a scientist in pursuit of education is not the right “kind” of person to do climate research. It’s the chilling sort of bigotry that we spent so much time in the 20th century fighting against.  In the 21st century, though, it appears one can still get away with demonizing knowledge, education and research, part of the campaign to indict “elitism,” the same sort of elitism aspired to by America’s founders.  Too much of the criticism against scientists involved in documenting global warming is the cheap bigotry the critics claim to find in science, falsely claimed in my view.

Topsy-turvy.

And the glaciers?  Yeah, the evidence tends to show they are in trouble.  Those Himalayan glaciers?  The IPCC report was accurate in everything except the speed at which the glaciers decline — they should be with us for another three centuries, not just 50 years, if we can reduce warming back to 1990s levels (oddly, denialists rarely deal with the facts of accelerating warming, preferring to point to a local snowstorm as a rebuttal of all knowledge about climate).

Oh, and the research?  The author of the story in Climbing magazine is Mark Bowen.  Dr. Bowen’s Ph.D. is in physics from MIT. He’s a climber, and he researches climate change on the world’s highest mountains.  His 2005 book, Thin Ice, focused tightly on what we can learn about climate from the world’s highest mountains.   Bowen is the expert Anthony Watts would like to be.

Cover of Mark Bowen's book defending climate science, "Censoring Science."

Cover of Mark Bowen’s book defending climate science, “Censoring Science.”

Bowen’s newest book:  Censoring Science:  Inside the political attack on James Hansen and the truth of global warming. Watts doesn’t want anyone to read that book.  It is easy to imagine Watt’s s attack is, he hopes, pre-emptive, against Bowen’s book.

I’ll wager Watts hasn’t read the article in Climbing, and didn’t know who Bowen was when he launched his attack, though.  The denials of bias coming out of the denialists’ camp will be interesting to watch.

Let the denialists roll out the rope far enough, they’ll inevitably hang themselves.

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Tracks on the beach, footprints in the sand

January 30, 2010

Maybe not the tracks you expected — pulse quickening, all the same:

Grizzly bear tracks, Sithylemenkat Lake, Kanuti National Wildlife Refuge, Alaska - photo by Steve Hillebrand USFWS, public domain

Grizzly bear tracks, Sithylemenkat Lake, Kanuti National Wildlife Refuge, Alaska - August 2006 photo by Steve Hillebrand USFWS, public domain


No climate change denialists will apply

January 28, 2010

Australia is looking for a scientist to head up the next round of Australia’s reports to the Intergovernmental Panel on Climate Change (IPCC).

But who would want a job that pays nothing and brings a great deal of grief?  Crikey notes that scientists, especially Australian scientists, get slandered and libeled daily by climate change denialists.  Not to mention the death threats.

That fat pay the denialists keep claiming comes to the scientists, and urges them to misreport the data?

The only remuneration IPCC scientists get – as a quick check of last week’s ad would have made clear — is travel costs and living expenses while they are at IPCC meetings.  The IPCC work is on top of their day jobs as academics and researchers.

That’s right, ladies and gentleman:  Climate Denialist Extraordinaire Christopher Monckton profits from his obnoxious and error-filled lectures more than the guys who do the heavy lifting.

You know that denialists won’t apply to do the job.  Most of us suspect they don’t have the courage of their convictions to do it, but there’s another problem:  Very few of them are qualified.  They don’t do science.

Bookmark the story. Remind the denialists of it from time to time.

IPCC art, on AR5 process

(New year’s greetings from the IPCC.)


Yellowstone Earthquake Swarm of 2010 fizzling out?

January 27, 2010

Inside Yellowstone noted just three earthquakes in the Yellowstone swarm in a 24-hour period covering most of Saturday.

It wasn’t the End of the World as Old Faithful Knows It, after all.

The Yellowstone Volcano Observatory (YVO) suggests the swarm continues, however — but doesn’t suggest anyone should be too concerned about it.

As of January 26, 2010 9:00 AM MST there have been 1,360 located earthquakes in the recent Yellowstone National Park swarm. The swarm began January 17, 2010 around 1:00 PM MST about 10 miles (16 km) northwest of the Old Faithful area on the northwestern edge of Yellowstone Caldera. Swarms have occurred in this area several times over the past two decades.

There have been 11 events with a magnitude larger than 3, 101 events of magnitude 2 to 3, and 1248 events with a magnitude less than 2. The largest events so far have been a pair of earthquakes of magnitude 3.7 and 3.8 that occurred after 11 PM MST on January 20, 2010.

The first event of magnitude 3.7 occurred at 11:01 PM MST and was shortly followed by a magnitude 3.8 event at 11:16 PM. Both shocks were located around 9 miles to the southeast of West Yellowstone, MT and about 10 miles to the northwest of Old Faithful, WY. Both events were felt throughout the park and in surrounding communities in Wyoming, Montana, and Idaho.

See the University of Utah Seismograph Stations for the most recent earthquake data and press releases. The team is working 24/7 to analyze and communicate information about the swarm. Seismograph recordings from stations of the Yellowstone seismograph network can be viewed online at: http://quake.utah.edu/helicorder/yell_webi.htm.

You can get the information from the horse’s mouth (Dragon’s Mouth?) — some enterprising earth sciences, geography or general science teacher can probably work up a great assignment for students to deal with the data and make sense from them.

Ground deformations in the Yellowstone Caldera, from satellite photos - Geology.com imageGround deformations in the Yellowstone Caldera, from satellite photos - Geology.com image

Ground deformations in the Yellowstone Caldera, from satellite photos, in 2005 - Geology.com image (This isn't really directly related to the earthquake swarm, but it's a cool image.)

Update, March 12, 2011: This post has been mighty popular over the last week.  Can someone tell me, in comments, whether this post was linked to by another site?  Why the popularity all of a sudden — even before the Japan earthquake and tsunami?  Please do!


Astounding manipulation of data — from the climate denialists

January 26, 2010

Especially since they purloined the e-mails from the Hadley Climate Research Unit (CRU), climate change denialists get bolder and bolder about making wilder and wilder statements of disinformation.

For example, our old friend Anthony Watts now makes criminal charges in his headlines, that scientists altered data to reflect the opposite of what their research found and then lied about it — but read the story, about Himalayan glaciers.  Watts quotes a story with a bad headline from The Daily Mail, in which a scientist tells how important scientisits consider the situation in the Himalayas, with glacier decline. There is no confession of any wrongdowing, but Watt’s headlines it “Scientist admits IPCC usied fake data to influence policy makers.”  There’s no confession.  Were it so wildly inaccurate, wouldn’t Watts post the science that rebuts the IPCC claim?

Anyway, Dale Husband takes a harder look at some of the denialist claims.  Nils-Axel Morner claims that, contrary to all measures and the actual submersion of islands, sea level rises do not occur.  Morner testified to that point to the British government in 2005, according to Dale Husband.

Can you detect the “trick” Morner used to deny sea level rise in his graph?

Morner's "data trick" to show no sea level rise, 2005

Morner's "data trick" to show no sea level rise, 2005

Morner’s work is the basis of Anthony Watts’ and Christopher Monckton’s claims that the Maldives are not sinking, and probably the “science” basis for almost all claims that the oceans do not rise.  You gotta follow the footnotes.

The intellectual execution, drawing and quartering of Morner’s claims is worth a read, at Dale Husband’s Intellectual Rants.

Good heavens.  Is Morner really the intellectual basis of this part of the denialists’ denial?  This isn’t an area I’ve followed closely.  My experience is that if Monckton cites him, he’s probably wrong.  But Morner is the major author on sea levels in the denialist compilation of what they claim is not crank science.

Maybe the denialists should just take up yoga.  If you stand on your head to look at the charts, they all look different, and the charts showing the temperature rising aren’t quite so scary.


Yellowstone earthquake swarm, 2010

January 25, 2010

Stop me if you’ve heard this one:

Earthquake swarm hits the area of the Yellowstone Caldera, around Yellowstone Park; wackoes start predicting the End of the World As We Know It, at least for West Yellowstone, Montana, and Jackson Hole, Wyoming.  Unless they are Bobby Jindal, and they predict that the quakes didn’t even happen.

Oh, yeah — that was the series of earthquake swarms in late 2008 and early 2009, right?

Not exactly.  It’s happened again.

Yellowstone Volcano Observatory logo
YELLOWSTONE VOLCANO OBSERVATORY INFORMATION STATEMENT
Thursday, January 21, 2010 2:26 PM MST (Thursday, January 21, 2010 2126 UTC)

Yellowstone Volcano
44°25’48” N 110°40’12” W, Summit Elevation 9203 ft (2805 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

The earthquake swarm on the northwest edge of Yellowstone Caldera that began on January 17, 2010 continues.

PRESS RELEASE FROM YVO PARTNER UNIVERSITY OF UTAH SEISMOGRAPH STATIONS

Released: January 21, 2010 2:00PM MST

This release is a continuation of information updates building upon our two previous press releases on the ongoing earthquake swarm on the west side of Yellowstone National Park. The University of Utah Seismograph Stations reports that a pair of earthquakes of magnitude 3.7 and 3.8 occurred in the evening of January 20, 2010 in Yellowstone National Park.

The first event of magnitude 3.7 occurred at 11:01 PM and was shortly followed by a magnitude 3.8 event at 11:16 PM. Both shocks were located around 9 miles to the southeast of West Yellowstone, MT and about 10 miles to the northwest of Old Faithful, WY. Both events were felt throughout the park and in surrounding communities in Wyoming, Montana, and Idaho.

These two earthquakes are part of an ongoing swarm in Yellowstone National Park that began January 17, 2010 (1:00 PM MST). The largest earthquake in the swarm as of 12 PM, January 21, 2010, was a magnitude 3.8. There have been 901 located earthquakes in the swarm of magnitude 0.5 to 3.8. This includes 8 events of magnitude larger than 3, with 68 events of magnitude 2 to 3, and 825 events of magnitude less than 2. There have been multiple personal reports of ground shaking from observations inside the Park and in surrounding areas for some of the larger events (for felt reports, please visit http://earthquake.usgs.gov/eqcenter/dyfi/). Earthquake swarms are relatively common in Yellowstone.

The swarm earthquakes are likely the result of slip on pre-existing faults rather than underground movement of magma. Currently there is no indication of premonitory volcanic or hydrothermal activity, but ongoing observations and analyses will continue to evaluate these different sources.

Seismic information on the earthquake can be viewed at the University of Utah Seismograph Stations: http://www.seis.utah.edu/.

Seismograph recordings from stations of the Yellowstone seismograph network can be viewed online at: http://quake.utah.edu/helicorder/yell_webi.htm.

Anyone who has felt earthquakes in the swarm are encouraged to fill out a form on the USGS Community Felt reports web site: http://earthquake.usgs.gov/eqcenter/dyfi/.

This press release was prepared by the Yellowstone Volcano Observatory partners of the U.S. Geological Survey, the University of Utah, and the National Park Service: http://volcanoes.usgs.gov/yvo/

The Yellowstone Volcano Observatory (YVO) is a partnership of the U.S. Geological Survey (USGS), Yellowstone National Park, and University of Utah to strengthen the long-term monitoring of volcanic and earthquake unrest in the Yellowstone National Park region. Yellowstone is the site of the largest and most diverse collection of natural thermal features in the world and the first National Park. YVO is one of the five USGS Volcano Observatories that monitor volcanoes within the United States for science and public safety.

CONTACT INFORMATION:
Peter Cervelli, Acting Scientist-in-Charge, USGS

pcervelli@usgs.gov (650) 329-5188


The Yellowstone Volcano Observatory (YVO) was created as a partnership among the U.S. Geological Survey (USGS), Yellowstone National Park, and University of Utah to strengthen the long-term monitoring of volcanic and earthquake unrest in the Yellowstone National Park region. Yellowstone is the site of the largest and most diverse collection of natural thermal features in the world and the first National Park. YVO is one of the five USGS Volcano Observatories that monitor volcanoes within the United States for science and public safety.

Here’s the map as of Sunday night, January 24, 9:10 p.m. MST (where the observatory is located); while this map may update here, you may want to click over to the observatory for more information (click on the map):

Yellowstone National Park Special Map, showing earthquakes in last week.

Yellowstone National Park Special Map, showing earthquakes in last week.

Eruptions has a short post on the swarmVolcanism, which covers volcanoes better than Sherwin-Williams covers the world, has a short post, probably appropriate to the newsworthiness.  Stoichiometry mentions them.  Not much to say yet, right?  Yellowstone Insider doesn’t seem too alarmed.

In mass media, The Billings (Montana) Gazette notes that these quakes are probably just shifting rocks, and not volcanic activity.  The headline in the Bozeman (Montana) Daily Chronicle captures the news:  “Earthquake Swarm Suggests Just Another Day in Yellowstone.”

Meanwhile, Scott Bowen at True/Slant sounds just a little alarmistRalph Maughan sets the right tone:  “No, it doesn’t mean the end is near.”  The tinfoil hat concessions probably won’t make nearly the money they did a year ago.

Outside of the Yellowstone and Intermountain areas, students will probably ask about 2012.  Tell them the Mayans didn’t know anything about Old Faithful.

Resources:

Shake a little news to the rest of the world:

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This history really cooks!

January 24, 2010

Another anniversary worth noting.

On January 24, 1950, the U.S. Patent Office awarded Percy L. Stevens patent # 2,495,429, for his “Method of Treating Foodstuffs” with waves from a magnetron oscillator.  Sixty years ago today Percy Stevens changed culinary life forever.

You guessed it:  The microwave oven.

Microwave oven patent Percy L Stevens - US2495429 (drawing only)

Patent for "Method for Treating Foodstuffs," granted January 24, 1950, to Percy L. Stevens of the Raytheon Corp. - the microwave oven. Image via FreePatentsOnline.com

On CBS “Sunday Morning” Charles Osgood said that in 1975 microwave oven sales surpassed conventional oven sales for the first time.  This is more remarkable because the first commercial microwave in 1955 was too big for home kitchens, and at $1,300, too pricey.  Japanese modifications of the magnetron to shrink it made microwave ovens much like those we have today ready for the market for the first time in 1967.  Eight years from market entry to majority of the market.

It only makes sense:  Today offices on every floor of every office building have microwave ovens in their break rooms, but almost none ever had conventional ovens.  College students have microwaves in their dormitory rooms.  Even gasoline stations offer foods for microwaving by customers.

Spencer’s invention makes it possible to heat foods quickly with a relatively small device, in thousands of places where no conventional oven would work well, or be welcomed.

According to legend — accurate? — Spencer got the idea after working with magnetron tubes while carrying a chocolate bar in his pocket.  He noticed the chocolate bar melted.  Within a short time he had demonstrated the ability to pop popcorn and burst an egg with the microwaves from the tube.

Sign of the changing times:  Many children today do not know how to pop popcorn without a microwave.  Legend has it that children in elementary school ask where the Massachusetts natives kept the microwaves with which they popped the corn that delighted the settlers of the Plymouth Colony.

Microwave oven inventor Percy Stevens with early microwave equipment at Raytheon

Microwave oven inventor Percy Spencer with early microwave equipment at Raytheon - photo from Spencer family archive

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Where’s that global cooling the denialists promised?

January 20, 2010

Forgetting that the planet has seasons, climate denialists for months have been hoo-hooing  about snowfalls and cold weather.  Some of the more serious propagandists among them claim that the Earth is now in a cooling cycle, and that temperatures have been falling since the record hot year of 1998.

Really?

Head on over to Open Mind, and take a look at the facts.

NASA GISS [Goddard Institute for Space Studies] has released the estimated monthly temperature for December 2009, which closes out the year 2009, which closes out the decade of the 2000s. The result: 2005 is still the hottest calendar year, 2009 is the 2nd-hottest year ever, although it’s really in a statistical tie with 1998, 2002, 2003, 2006, and 2007.

They’ve confused weather with climate.  They’ve failed to keep score.  Perhaps they’ve spent wasted their time hacking e-mails instead of measuring climate.

RealClimate carries the news in a post by some of NASA’s top scientists, including James Hansen:

The past year, 2009, tied as the second warmest year in the 130 years of global instrumental temperature records, in the surface temperature analysis of the NASA Goddard Institute for Space Studies (GISS). The Southern Hemisphere set a record as the warmest year for that half of the world. Global mean temperature, as shown in Figure 1a, was 0.57°C (1.0°F) warmer than climatology (the 1951-1980 base period). Southern Hemisphere mean temperature, as shown in Figure 1b, was 0.49°C (0.88°F) warmer than in the period of climatology.

How will the critics treat this news?  And, what were they doing during the past decade when all those warm days rolled into weeks, rolled into months and years, and finally, to the warmest decade ever?

Global land  temperature mean for the decade ending 2009, plus hemispheric comparisons

Caption from RealClimate: Figure 1. (a) GISS analysis of global surface temperature change. Green vertical bar is estimated 95 percent confidence range (two standard deviations) for annual temperature change. (b) Hemispheric temperature change in GISS analysis. (Base period is 1951-1980. This base period is fixed consistently in GISS temperature analysis papers. . . Base period 1961-1990 is used for comparison with published HadCRUT analyses in Figures 3 and 4.)

Heat things up a bit, and spread the alarm:

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Tonight in Iowa City! DDT and myth lecture

January 19, 2010

A reminder that Prof. O’Shaughnessy’s lecture on DDT and myths rolls tonight in Iowa City.  We hope to have a report, later.

As we posted earlier:

Do we have any readers in Iowa City?  Near Iowa City?

A presentation on the history of malaria and DDT, and the recent use and abuse of those stories to flog environmentalists and others on the internet, is set for the Hardin Library for Health Sciences at the University of Iowa in Iowa City, on January 19, 2010 (next Tuesday).

If you’re there, can you snap a couple of pictures to send, and get any handouts, and write up a piece about it?

Here is the press notice on-line:

Presentation on the History of Malaria and DDT

The University of Iowa History of Medicine Society invites you to hear Patrick T. O’Shaughnessy, PhD, Associate Professor, Department of Occupational and Environmental Health, University of Iowa, speak on “Malaria and DDT: the History of a Controversial Association” on Tuesday, January 19th, 5:30 to 6:30, room 2032 Main Library. [in Iowa City, Iowa.]

Dr. O’Shaughnessy observes:  ”Although it helped prevent millions of cases of malaria after its widespread use in the 1950’s, the pesticide DDT was banned from use in the United States and fell out of favor as an agent to reduce cases of malaria around the world. This history of the events associated with the effort to eradicate malaria, as well as the environmental movement that led to the ban on DDT, will center on the story of a story that incorporated both issues and grew into a modern myth still seen in books and multiple websites today.”

The session is free and open to the public.  Light refreshments will be served.

Hardin Library for the Health Sciences stands on the campus in Iowa City.

Hardin Library for the Health Sciences
600 Newton Road
Iowa City, IA 52242-1098

319-335-9871

The Hardin Library for the Health Sciences is located on Newton Road, directly north of the University of Iowa Hospitals and Clinics and approximately 1/2 mile east of Carver-Hawkeye Arena.  Go here for directions and more information.

Maybe I’m not the only bothered by the usual abuse of history and science on the issues of DDT and malaria.

Note: Tim Lambert notes at Deltoid that O’Shaughnessy is the guy who wrote what may be the definitive work on the famous — or infamous — Borneo Cat Drop. If you live in or near Iowa City, this lecture may be a wise investment of time.  High school teachers, your students could benefit, too.


Annals of Global Warming: Bering Strait, choke point and butterfly effect

January 17, 2010

From the National Science Foundation, we get more stuff that students in high school ought to learn, stuff which would give the conservatives on the Texas State Board of Education full-fledged conniptions, stuff that just doesn’t fit into Texas’s Teach-To-The-Test™ education standards.

Reading the press release brings home two points to me.  First, for the sake of Texas social studies standards, this story tells the physical effects of “choke points.”  The Bering Strait limited human migration to populate the America’s, meeting the definition of choke point favored by Texas Essential Knowledge and Skills (TEKS), and this story sheds light on that issue.  But it also points out that choke points affect more than just humans.  This was a key finding of the President’s Commission on Americans Outdoors that led to a recommendation that we create green corridors favorable for animal migration.  In the Bering Strait, it’s migration of ice and cold and warm water that get choked off — and that, too, affects human history.  Second, this may enlighten students to the butterfly effect noted in the science we call chaos, where a small physical perturbation in one area can have enormous consequences later, and far away, in the dynamic systems that keep our planet alive.  (Yeah, the Bering Strait is bigger than a butterfly.  I know.)

Press Release 10-003

Global Ice Age Climate Patterns Influenced by Bering Strait

Small geographic feature has large impacts on climate

Ice pouring through the Bering Strait, from the Arctic to Pacific Ocean - NASA photo via NSF

Ice is shown choking the Bering Strait in recent times; the ice moves from the strait south to the Bering Sea. Credit: NASA

January 10, 2010

In a vivid example of how a small geographic feature may have far-reaching impacts on climate, new research shows that water levels in the Bering Strait helped drive global climate patterns during ice age episodes dating back more than 100,000 years.

The international study, led by scientists at the National Center for Atmospheric Research (NCAR) in Boulder, Colo., found that the repeated opening and closing of the narrow strait due to fluctuating sea levels affected currents that transported heat and salinity in the Atlantic and Pacific Oceans.

As a result, summer temperatures in parts of North America and Greenland oscillated between comparatively warm and cold phases, causing ice sheets to alternate between expansion and retreat and affecting sea levels worldwide.

While the findings do not directly bear on current global warming, according to Steve Nelson, National Science Foundation (NSF) program director for NCAR, they highlight the complexity of Earth’s climate system and the fact that seemingly insignificant changes can lead to dramatic tipping points for climate patterns, especially in and around the Arctic.

“The global climate is sensitive to impacts that may seem minor,” says NCAR scientist Aixue Hu, the project’s lead scientist. “Even small processes, if they are in the right location, can amplify changes in climate around the world.”

The research results are published this week in the journal Nature Geoscience.

Funded by NSF and the U.S. Department of Energy, the scientists used the latest generation of supercomputers to study past climate at a level of detail that would have been impossible just a few years ago.

Hu and his colleagues set out to solve a key mystery of the last glacial period: Why, starting about 116,000 years ago, did northern ice sheets repeatedly advance and retreat for about the next 70,000 years? The enormous ice sheets held so much water that sea levels rose and dropped by as much as about 100 feet (30 meters) during these intervals.

In other cases, scientists have associated such major oscillations in climate with fluctuations in Earth’s orbit around the Sun. But in the time period the research team looked at, the orbital pattern did not correspond with the geologic movement of the ice sheets and associated sea level changes.

The researchers considered an alternative possibility: that changes in the Bering Strait, the main gateway in the Northern Hemisphere between the Atlantic and Pacific Oceans, might have affected ocean currents across much of the globe.

Although small–the strait is currently about 50 miles (80 kilometers) wide between Russia and the westernmost islands of Alaska–it allows water to circulate from the relatively fresh north Pacific to the saltier north Atlantic via the Arctic Ocean. This flow is instrumental to regulating the strength of a current known as the meridional overturning circulation, a key driver of heat from the tropics to the poles.

Using the NCAR-based Community Climate System Model, a powerful computer tool for studying worldwide climate, the researchers compared the responses of ice age climate to conditions in the Bering Strait.

They ran the model on new supercomputers at NCAR and the Department of Energy’s Oak Ridge National Laboratory, enabling them to focus on smaller-scale geographic features that, until recently, could not be captured in long-term simulations of global climate.

The simulations accounted for the changes in sea level, revealing a recurring pattern–each time playing out over several thousand years–in which the reopening and closing of the strait had a far-reaching impact on ocean currents and ice sheets.

As the climate cooled because of changes in Earth’s orbit, northern ice sheets expanded. This caused sea levels to drop worldwide, forming a land bridge from Asia to North America and nearly closing the Bering Strait.

With the flow of comparatively fresh water from the Pacific to the Atlantic choked off, the Atlantic grew more saline. The saltier and heavier water led to an intensification of the Atlantic’s meridional overturning circulation, a current of rising and sinking water that, like a conveyor belt, pumps warmer water northward from the tropics.

This circulation warmed Greenland and parts of North America by about 3 degrees Fahrenheit (1.5 degrees Celsius)–enough to reverse the advance of ice sheets in those regions and reduce their height by almost 400 feet (112 meters) every thousand years. Although the Pacific cooled by an equivalent amount, it did not have vast ice sheets that could be affected by the change in climate.

Over thousands of years, the Greenland and North American ice sheets melted enough to raise sea levels and reopen the Bering Strait.

The new inflow of fresher water from the Pacific weakened the meridional overturning circulation, allowing North America and Greenland to cool over time. The ice sheets resumed their advance, sea levels dropped, the Bering Strait again mostly closed, and the entire cycle was repeated.

The combination of the ocean circulation and the size of the ice sheets–which exerted a cooling effect by reflecting sunlight back into space–affected climate throughout the world.

The computer simulations showed that North America and Eurasia warmed significantly during the times when the Bering Strait was open, with the tropical and subtropical Indian and Pacific Oceans, as well as Antarctica, warming slightly.

The pattern was finally broken about 34,000 years ago, the point in Earth’s 95,000-year orbital cycle at which the planet was so far from the Sun at certain times of year that the ice sheets continued to grow even when the Bering Strait closed.

When the orbital cycle brought Earth closer to the Sun in the northern winter, the ice sheets retreated sufficiently about 10,000 years ago to reopen the strait. This helped lead to a relatively stable climate, nurturing the rise of civilization.

“This kind of study is critical for teasing out the nuances of our climate system,” says NCAR scientist Gerald Meehl, a co-author of the paper. “If we can improve our understanding of the forces that affected climate in the past, we can better anticipate how our climate may change in the future.”

In addition to NCAR, the study team included researchers from the National Center for Scientific Research (CNRS) in France, University of Colorado in Boulder, Catholic University of Louvain in Belgium, Australian National University and Harvard University.

-NSF-
Download the high-resolution JPG version of the image [of ice flowing through the Bering Strait, above]. (1.4 MB)

Bering Strait, NASA photo via National Science Foundation

The Bering Strait separates the U.S. and Russia by only 90 kilometers. Credit: NASA

Download the high-resolution JPG version of the image. (570 KB)

Currents move warm and cold water across the Arctic Ocean - UCAR map

Altered currents once produced ocean warming (right, dark red) that melted ice sheets. Credit: UCAR

Download the high-resolution JPG version of the image. (680 KB)

Media Contacts
Cheryl Dybas, NSF (703) 292-7734 cdybas@nsf.gov
David Hosansky, NCAR/UCAR (303) 497-8611 hosansky@ucar.edu

The National Science Foundation (NSF) is an independent federal agency that supports fundamental research and education across all fields of science and engineering. In fiscal year (FY) 2009, its budget is $9.5 billion, which includes $3.0 billion provided through the American Recovery and Reinvestment Act. NSF funds reach all 50 states through grants to over 1,900 universities and institutions. Each year, NSF receives about 44,400 competitive requests for funding, and makes over 11,500 new funding awards. NSF also awards over $400 million in professional and service contracts yearly.

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Annals of Global Warming: Black soot and glaciers in Tibet

January 5, 2010

Another in a series on the history of global warming; this comes from the Earth Observatory at NASA (visit that site — the image is more stunning, larger):

tibet_geos5_2009269

Black Soot and the Survival of Tibetan Glaciers

Posted December 15, 2009
Black Soot and the Survival of Tibetan Glaciers

Color bar for Black Soot and the Survival of Tibetan Glaciers
download large image (677 KB, JPEG) acquired September 26, 2009
download large animation image (9 MB, M4V) acquired August 1, 2009 – November 9, 2009

On the Tibetan Plateau, temperatures are rising and glaciers are melting faster than climate scientists would expect based on global warming alone. A recent study of ice cores from five Tibetan glaciers by NASA and Chinese scientists confirmed the likely culprit: rapid increases in black soot concentrations since the 1990s, mostly from air pollution sources over Asia, especially the Indian subcontinent. Soot-darkened snow and glaciers absorb sunlight, which hastens melting, adding to the impact of global warming.

NASA climate scientists combine satellite and ground-based observations of soot and other particles in the air with weather and air chemistry models to study how the atmosphere moves pollution from one place to another. This image is from a computer simulation of the spread of black soot (“black carbon” to climate scientists) over the Tibetan Plateau from August through November 2009. It shows black carbon aerosol optical thickness on September 26, 2009. (Aerosol optical thickness is scale that describes how much pollution was in the air based on how much of the incoming sunlight the particles absorbed.) Places where the air was thick with soot are white, while lower concentrations are transparent purple.

The highest concentrations of black soot are in the right-hand side of the image, over the densely populated coastal plain of China. But high concentrations occur over India, as well, and the black soot spreads across the southern arc of the Tibetan Plateau, which is defined by the towering peaks of the Himalaya Mountains. (Note: Topography has been exaggerated to highlight features that influence air movement). The animation shows how the black carbon pollution from India often circulates at high concentrations for several days against the base of the Himalaya, periodically “sloshing” over the rim of the mountains and spilling northward over the plateau, before being carried away over the Bay of Bengal or the Arabian Sea.

Writing about the implications of the study for the Goddard Institute for Space Studies Website, NASA climate scientist and study co-author James Hansen said, “[C]ontinued, ‘business-as-usual’ emissions of greenhouse gases and black soot will result in the loss of most Himalayan glaciers this century, with devastating effects on fresh water supplies in dry seasons. The black soot arises especially from diesel engines, coal use without effective scrubbers, and biomass burning, including cook stoves. Reduction of black soot via cleaner energies would have other benefits for human health and agricultural productivity. However, survival of the glaciers also requires halting global warming, which depends upon stabilizing and reducing greenhouse gases, especially carbon dioxide.”

NASA image by Gregory Shirah, Goddard Scientific Visualization Studio, based on model simulations from the Goddard Earth Observing System Model, Version 5 (GEOS-5). Caption by Rebecca Lindsey.