Open Mind

Entries from January 2009

Open Thread #10

January 31, 2009 · 395 Comments

As was pointed out, some threads are getting prohibitively long. So here’s an open thread to continue discussion.

Categories: Global Warming

George Monbiot pulls no punches

January 26, 2009 · 75 Comments

Categories: Global Warming
Tagged:

Antarctica Warming

January 23, 2009 · 98 Comments

Anthony Watts has posted A letter from a meteorologist on the ground in Antarctica. It’s part 2 of Watts’ series attempting to torpedo new research indicating strong warming in West Antarctica over the last 50 years, and slight warming over the continent as a whole.

(more…)

Categories: Global Warming
Tagged:

A Bag of Hammers

January 19, 2009 · 150 Comments

The level of gullibility in reader comments has recently reached an all-time high.

(more…)

Categories: Global Warming
Tagged:

Elementary, my dear Watson

January 16, 2009 · 16 Comments

Sometimes a post is just too good not to link to. Like this one.

Categories: Global Warming

What if … ?

January 15, 2009 · 141 Comments

NASA GISS has released the year-end temperature figures for 2008. The numbers are bound to change in the near future, but only slightly, because more data is forthcoming; there’s always a delay receiving all the data from stations worldwide. But enough data has arrived to estimate the temperature anomalies for the year.

(more…)

Categories: Global Warming
Tagged:

CO2 Acceleration

January 12, 2009 · 65 Comments

The question arose recently, is it really true that atmospheric CO2 concentration is not just increasing but actually accelerating? Let’s take a look at some data.

(more…)

Categories: Global Warming
Tagged:

‘Tain’t Likely

January 10, 2009 · 78 Comments

Every year this century is among the top-10 hottest years on record. In fact the clustering of hottest years is even more lop-sided than that would indicate; by the end of 2006 it was noted that the 13 hottest years on record had all occurred since 1990 (and we’ve added a couple more to that list since then). How unlikely is that?

Precisely that question is addressed in “How unusual is the recent series of warm years?” (Zorita et al. 2008, Geophysical Research Letters 35, L24706 doi:10.1029/GL036228). The conclusion can be summed up in a phrase best said with a strong Maine accent: ’tain’t likely.

(more…)

Categories: Global Warming
Tagged:

Cold Hard Facts

January 8, 2009 · 200 Comments

Suppose you needed to understand these data:

glarea

You’re especially interested in the trend present, so you can have some idea what to expect in the future. You suspect that there’s a downward trend (based on visual inspection of the data), but you’re not sure whether or not it’s significant, or whether the trend might be nonlinear, and you’re not a statistician. So you hire someone to analyze the data, who reports that the proper characterization of the long-term trend is summarized thus:

glarea79

In fact, he flatly states that there’s no downward trend, as proved by the fact that the value for December of 2008 is about the same (a little bigger, in fact) than the value for December 1979. Then he presents you with a whopper of a bill for his services.

(more…)

Categories: Global Warming
Tagged:

Younger Dryas Impact Event

January 3, 2009 · 124 Comments

Not too long ago Firestone et al. (2008) reported considerable evidence for the impact of some object from space in northern North America about 12,900 years ago. Now, yet another report emerges showing the existence of “nanodiamonds” in sedimentary layers from that time, further evidence of an impact event which could have had important consequences for the environment at that time. In fact, there’s speculation (and in my opinion, well founded) that the impact event may have been the “trigger” which caused a climate event known as the Younger Dryas (”YD”).

(more…)

Categories: Global Warming
Tagged: