No discussion of CO2 measurements please.
Gavin Schmidt and James Hansen say that errors in the U.S. “don’t matter” because it is only 2% of the earth’s surface (about 6% of the land surface). This implies that the accuracy of measurements in other parts of the world can be relied on. In the U.S. the 1930s have a similar level to […]
Hansen tells us that he won’t “joust with jesters”, as presumably he’s too busy adjusting to have time for jousting. We by contrast have lots of time to jest with adjusters.
In the discussion of my previous post, a reader posted a link to a fascinating picture of Tucson in 1923 – a picture complete with Stevenson screen in the foreground, if you can imagine, clearly visible on the right. Figure 1. Tucson c. 1923. From left to right: Agriculture Building, Old Main, and the Mines […]
Porto Velho and Londrina are two somewhat similar sized Brazilian cities (populations 335,000 and 500,000 respectively) which have remarkably different Hansen adjustments. One is adjusted up by 2 deg C and one is adjusted down by 2 deg C. It’s pretty strange to see.
Andrew Revkin of the New York Times writes here in a compacted story. Me versus Jor-El. I spent quite a bit of time saying that the errors mattered a lot at the individual station level and were “significant” for U.S. temperature. For example, consider this page at NASA which shows a comparison between temperatures by […]
Bernie has collated the population of the Brazil GHCN stations (used in GISS) located here. OF 20 GHCN/GISS “rural” stations, only 3 currently have populations under 5,000 and some are now cities. Of 7 GHCN/GISS “small” towns, 6 are currently cities.
I’ve loaded R-tables for the dset=1 and dset=2 versions. The R-tables are lists each 7364 long, each item is a station time series. The files are about 8 MB in size. I have a variety of little scripts to retrieve and analyze things. The data is located here: http://data.climateaudit.org/data/giss/giss.dset1.tab http://data.climateaudit.org/data/giss/giss.adj.tab Each file can be downloaded […]
Here’s something interesting: I’ve collated the GISS raw(dset=1) and GISS adjusted (dset=2) versions and then calculated the range of adjustments. The largest positive adjustment was over 8 deg C and the largest negative adjustment is greater than -6 deg C. I separated out the stations that had no adjustments (max adjustments under 0.01 deg C […]
I’ve spent some time (an inordinate amount of time) trying to figure out why GISS uses some GHCN stations and not others. Doing so has required a lot of work on GISS data sets which are nastily organized and with many seemingly ad hoc inclusions, exclusions and sloppinesses. Does any of this matter to world […]
Climate Audit 
Revkin on the Hansen Fiasco
Andrew Revkin of the New York Times writes here in a compacted story. Me versus Jor-El. I spent quite a bit of time saying that the errors mattered a lot at the individual station level and were “significant” for U.S. temperature. For example, consider this page at NASA which shows a comparison between temperatures by […]