Yearly Archives: 2009

A Shout Out to Dennis Wingo

CA reader and commenter Dennis Wingo laconically mentioned the other day that he’d managed to reconstruct early images of the Earth from the moon. The story has received some excellent and very favorable publicity. Dennis wrote to CA: I have been doing some reconstructions of lunar images from the mid 1960’s and reconstructed the famous […]

Spirit Cave, Thailand

A delayed report from Thailand on our trip to the Spirit Cave near the Burma border. Speleothems have become a popular proxy in the past decade, making up many new contestants in Mann et al 2008. We’ve discussed speleothems on numerous occasions, making reference to Jud Partin’s speleo in Borneo, a number of Chinese speleos […]

AR4 Models and the Ross Sea

I noticed something interesting in AR4 about Antarctic models, that no one mentioned in the initial commentary on Steig et al. When Steig et al 2009 came out, commenters had some fun teasing the clergy over at realclimate over Spencer Weart’s article the prior year. Pielke Jr Lucia CA Speaking for myself, I went to […]

Sea Ice 2009

For sea ice devotees.

Beckers and Rixen 2003 – Another Infilling Approach

Beckers and Rixen 2003 url is an interesting read in two respects: 1) they present a non-RegEM infilling approach. The method appears to be exactly the same as one that I (independently) implemented and illustrated about a month ago – what I termed “truncated PC”. This was actually the very first thing that I did […]

RegEM Impact on Peninsula Correlations

There has been a good deal of discussion regarding the correlation between temperatures at various locations throughout Antarctica. Several people have looked at the relationship between correlation and distance by creating graphs linking the two. IMO, one of the difficulties in interpreting these is that they are affected by a variety of factors, including the […]

Downloading UWisc Data

The Jeffs have been exploring the UWisc AVHRR data which is stored as a lot of gzipped ncdf files. I couldn’t figure out how to download and open this data into R. So, as I usually do in these cases, I asked CA reader Nicholas who, as usual, has a solution. I edited this slightly […]

…-omatic Correlations

Update Mar 28: Here is Luboš version replacing my much less pretty monochrome version showing the spatial decorrelation of the “Comiso” version of the data recently archived a couple of days ago by Steig. Figure 1. Spatial Correlation for Sample of “Comiso 2009” Antarctic Gridcells Jeff Id has compared this to corresponding surface stations at […]

Steig’s Secret Data

I checked in at Steig’s webpage to see if the long-awaited AVHRR had finally materialized. Update (Mar 26, 2009 aa am Eastern) This is now released. It had the following new paragraph (without any change notice to show that this dataset had not been there from time immemorial): cloudmaskedAVHRR.txt contains the monthly-averaged cloud-masked satellite data […]

Regular and "Special Decisions"

A couple of months ago, as I mentioned at the time, Ross and I submitted a paper to International Journal of Climatology discussing Santer, Schmidt et al versus Douglass et al. I just checked the status of the submission at the journal website and learned that the submission is subject to a “Special Decision”. We […]