Archive for March, 2011

Anthony Watts: The BEST surface temperature dataset

Posted: March 6, 2011 by tallbloke in climate

Reposted with permission from WUWT – My thanks to Anthony Watts

I have some quiet time this Sunday morning in my hotel room after a hectic week on the road, so it seems like a good time and place to bring up statistician William Briggs’ recent essay and to add some thoughts of my own. Briggs has taken a look at what he thinks will be going on with the Berekeley Earth Surface Temperature project (BEST).  He points out the work of David Brillinger whom I met with for about an hour during my visit. Briggs isn’t far off.

Brillinger, another affable Canadian from Toronto, with an office covered in posters to remind him of his roots, has not even a hint of the arrogance and advance certainty that we’ve seen from people like Dr. Kevin Trenberth. He’s much more like Steve McIntyre in his demeanor and approach. In fact, the entire team seems dedicated to providing an open source, fully transparent, and replicable method no matter whether their new metric shows a trend of warming, cooling, or no trend at all, which is how it should be. I’ve seen some of the methodology, and I’m pleased to say that their design handles many of the issues skeptics have raised and has done so in ways that are unique to the problem.

Mind you, these scientists at LBNL (Lawrence Berkeley National Labs) are used to working with huge particle accelerator datasets to find minute signals in the midst of seas of noise. Another person on the team, Dr. Robert Jacobsen, is an expert in analysis of large data sets. His expertise in managing reams of noisy data is being applied to the problem of the very noisy and very sporadic station data. The approaches that I’ve seen during my visit give me far more confidence than the “homogenization solves all” claims from NOAA and NASA GISS, and that the BEST result will be closer to the ground truth that anything we’ve seen.

But as the famous saying goes, “there’s more than one way to skin a cat”. Different methods yield different results. In science, sometimes methods are tried, published, and then discarded when superior methods become known and accepted. I think, based on what I’ve seen, that BEST has a superior method. Of course that is just my opinion, with all of it’s baggage; it remains to be seen how the rest of the scientific community will react when they publish.

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This technical paper by Patrick Geryl from Belgium represents a long and careful investigation into the link between solar rotation speed at various solar latitudes and the length and strength of the solar cycle. English is not Patrick’s first language, but he has made a tremendous effort to make his paper readable for us all. Please take your time to digest and understand this work, this area of investigation has high importance for the integration of our understanding of planetary motion, solar activity and the solar surface motion which is the key to the link between them.

The Sun’s Eleven Year Magnetic Reversal
Copyright Patrick Geryl 2011

The presented theory in this draft document uses the speed of the rotating magnetic fields of the Sun in order to calculate the magnetic field activity of the Sun and the number of sunspots which appear on the Sun’s surface. A sunspot is a place on the Sun’s surface which is characterized by a very strong magnetic field. Therefore, the number of the sunspots on the Sun is a good indicator of the intensity of the overall Sun’s magnetic activity. It is well-known that the magnetic field of the Sun peaks every eleven years, a cycle known as the sunspot cycle. At the peak of magnetic activity, the sun records maxima of sunspot numbers on its surface. It should be noted that the length of the sunspot cycle is not always exactly eleven years, to the contrary, it varies as discussed by Mursula and Ulich (1).

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WordPress hit by DDOS attack

Posted: March 4, 2011 by tallbloke in Uncategorized

If anyone noticed the severe connectivity issues affecting this site yesterday, here’s the reason:

http://news.cnet.com/8301-1009_3-20038874-83.html

Blog host WordPress.com was the target of a distributed denial-of-service (DDoS) attack earlier today described by the company as the largest in its history.

As a result, a number of blogs–including those that are a part of WordPress’ VIP service–suffered connectivity issues. That includes the Financial Post, the National Post, TechCrunch, along with the service’s nearly 18 million hosted blogs.

According to a post by Automattic employee Sara Rosso on the company’s VIP Lobby (which had been down at the time of the attacks, though was archived by Graham Cluley over at Naked Security), the size of the attack reached “multiple Gigabits per second and tens of millions of packets per second.” Rosso had also said putting a stop to the attack was “proving rather difficult.”

Read more:
These guys might have some good advice:
Good cartoon too.
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The blog daily viewing figures were badly affected, and the total for the day involved the number of the beast. Yikes!

Polar bears observe another deadline floating by, face down

Mark Serreze, NSIDC’s doom sayer, seems to have realized that the impending failure of his prediciton of an ice free arctic as soon as 2012[Wrong, see comments] is getting a bit too close for comfort, and has back-pedalled. Now the ice free arctic may be a few decades rather than years away. This is a much safer prediction for Mark, he’ll have long retired by the time this one gets proved wrong. Just five months ago in September 2010 Serreze said:

“I stand by my previous statements that the Arctic summer sea ice cover is in a death spiral. It’s not going to recover…I hate to say it but I think we are committed to a four- to six-degree warmer Arctic.”

In this week’s ‘Nature’ he says:

“Although the paper by Tietsche and colleagues brings a more optimistic view of the Arctic’s future….”

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Here we are again. Some readers will be mighty tired of this subject, but evidently there is still a lot of uncertainty of measurement, doubt about the validity of concepts and unwarranted certainty in statements around the question of the ability of infrared ‘back radiation’ from the atmosphere to warm the world’s oceans. It’s an important issue, because it forms the backbone of a lot of claims about the effects of the anthropogenic emission of carbon dioxide and other ‘greenhouse gases’.
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