Climate Climate & Energy

‘Long-term’ climate sensitivity of 6 degrees C for doubled CO2

The nation's top climate scientist is prolific: He has co-authored another important article: "Global Warming: East-West Connections" (PDF). And I'm not just saying that because he cites one of my articles. In fact, we've been having an email exchange and he strongly disagrees with me that it is too late, in a practical sense, to save the Arctic (and hence the polar bear). He believes strong and smart action now could work -- whereas I believe we need such action now to save the Greenland ice sheet, but doubt we can or will act in time to stop the total loss of Arctic summer ice.

I have previously written about the crucial climate variable -- the equilibrium climate sensitivity (typically estimated at about 3°C for double CO2) -- and how it only includes fast feedbacks, such as water vapor. Now Hansen has a draft article that looks at both current climate forcings and the paleoclimate record to conclude that "long-term" sensitivity is a stunning 6°C for doubled CO2. Here is what Hansen says on the subject (though when you read it you may wonder why Hansen is more optimistic than I am, rather than less):

Global warming ‘insurmountable’ without Heroes!

So the fall season has begun and, as expected, shows from Boston Legal to Moonlight are going green -- even William Shatner got into the act. I'd be very interested in hearing from readers if any of their favorite shows had a green element.

In the opening voiceover of the second season opener, genetics professor Mohinder Suresh (Sendhil Ramamurthy) says that humanity's problems, including global warming, are "insurmountable" without our Heroes. Shades of The 4400.

I'm glad the writers mentioned global warming. But the way they did leaves the impression that we can't solve the problem without superhuman abilities. And people can't fly or teleport or heal themselves from any injury -- can they?

How climate skeptics like Fred Singer operate

Several posts ago, I reproduced a few emails to and from well-known climate skeptic Fred Singer.

Since then, I've had a few other exchanges emailed to me. They give great insight into how skeptics work the system to promote their view.

Here's the best one:

Important article on social norms and pro-environment behavior

This article is a little slow getting started, but valuable nonetheless.

It doesn’t make sense — and that’s the point

More than a few people were taken in by a guy peddling a coal/solar hybrid system at Solar Power 2007. "But, smokestacks on the roof -- that just doesn't make sense," said a government bureaucrat, who shall remain unnamed pending resolution of my grant proposal.

Indeed, it doesn't. As the less credulous might have predicted, it was a marketing spoof by Sharp Solar:

Rush Limbaugh calls climatologist James Hansen a ‘double agent’

Earlier this week, the notorious Rush Limbaugh got in trouble for calling soldiers in Iraq opposed to the war "phony."

Thursday he called the science of ozone depletion "phony" and the science of climate change "fraudulent." Limbaugh went on to accuse Dr. James Hansen, America's top climatologist, of being "dishonest," compared him to a "CIA double agent," and said he should be "drummed out of NASA."

Does anyone take Limbaugh seriously anymore? Apparently, the answer is yes. Here are facts and links for the open-minded:

European fisheries ‘poor,’ island nation Palau rich in corals

Stakes in the seas are high, but in at least one case, an interest in ocean health can lead to cooperation between unlikely teammates ...

... the Woods Hole Oceanographic Institution held an international conference on the possibility of mitigating global warming by seeding the ocean with iron, a controversial procedure which would theoretically boost phytoplankton populations ...

... meanwhile, the scientist behind the theory that the earth is a living organism suggested installing a series of giant pipes in the oceans to circulate water, creating algae blooms, under the theory that the algae would consume carbon dioxide and promote cloud production ...

On climate nightmares, the Ursula problem, and planning ahead

      A couple of weeks ago, Wroth — as we affectionately call our story editor and chief punster — gave me a call. “Sonja, I’d like some pictures of your kids for our parenting series slideshow.” Not skipping a beat, I replied, “Piercings and all?” I wasn’t sure my two teenagers quite fit […]

By popular demand

Brad Pitt on climate and energy:

Tune in to the Live Earth Concert Special tonight

A CliffsNotes version of the summer’s 24-hour eco-music event will air tonight on MyNetworkTV. The two-hour "Live Earth — The Concert Special" promises clips of the hottest performances from the seven-continent concert for a climate in crisis — as well as tips for making eco-changes in your daily life. Check MyNetworkTV for local airtimes and […]