Category Archives: Data and observations

by Judith Curry

How confident can we be in our current and (recent) past observations of atmospheric composition and its impact on the Earth’s radiation balance?

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by Judith Curry

What do these three papers share in common?  All were written by scientists well outside the fields of atmospheric and climate science.

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by Greg Goodman

**UPDATE at end of thread**

The effect of the adjustments introduced in Met. Office’s HadSST3 release are compared to the original ICOADS data to evaluate their effects on the frequency content of the data. The relative merits of making a simple adjustment for the war-time glitch in ICOADS are also investigated. It is demonstrated that the various adjustments made in preparing Hadley SST versions combine to effectively removing long term variations from the climate record. Frequency analysis shows the adjustments generally disrupting, rather than improving the data.

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by Steve Mosher and Zeke Hausfather

Today the Berkeley Earth Surface Temperature Project publically released their accumulated minimum, maximum, and mean monthly data.

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by Judith Curry

This proposal by John Bates of NOAA NCDC nails what is needed in terms of climate data records.

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by Horst-Joachim Lüdecke, Rainer Link, Friedrich-Karl Ewert

It is nearly impossible to answer more than 1000 comments that the previous three threads [here, here and here] on the surface temperature data records have generated. Most technical comments and errors would settle themselves if the commentators better understood the methods applied.  This large number of comments demonstrates the interest in the BEST and the LU, LL publications.

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Guest Post by Lüdecke, Link, and Ewert

Our two papers [1], hereafter LU, and [2], hereafter LL, were published almost simultaneous with the release of the BEST papers. The basic objective of all of these papers is the same – to document reliably the surface temperature of the Earth from the beginning of the 19^th century until the present.

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by Vaughan Pratt

Paul Clark, the developer of the immensely useful WoodForTrees website that plots climate data, has kindly joined the discussion at Climate Etc., to clarify the meanings of ‘From:’, ‘To:’, and ‘Isolate’ which had been giving some people trouble. In this post I’d like to focus on the third of these, ‘Isolate’, whose utility may not have been fully appreciated.

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by Donald Rapp

Santer et al. (2005) emphasized that “a robust feature” of climate models is that increasing greenhouse gas concentrations will amplify warming in the middle and upper tropical troposphere (compared to the surface). It was then with some consternation that they noted that the data do not support this prediction; indeed, surface warming typically exceeds tropospheric warming.

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by Judith Curry

The new Berkeley Earth Surface Temperature product and the accompanying papers have generated considerable discussion.  Lets focus on the technical criticisms.

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by Judith Curry

The new surface temperature dataset developed by the Berkeley group is now available, along with four manuscripts that have been submitted for publication.

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by Judith Curry

The publication last week of results from the CERN CLOUD experiment on cosmic rays is generating significant buzz, with substantial debate on the implication of these results for climate change,

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by Tony Brown

Over the years I have become intrigued at the manner in which historic surface temperature records- that were never intended to be more than a broad reflection of the micro climate around them- have been used as if they were highly accurate scientific data and subsequently used to inform policy. I have written two articles about their historic accuracy, both of which can be accessed through this link.

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by Judith Curry

A comprehensive history of the controversy surrounding tropospheric temperature trends has recently been published in WIRES Climate Change (h/t WUWT and Lorne LeClerc).

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