In its land surface temperature calculations, NASA GISS is little more than a distributor for NOAA GHCN. As Gavin Schmidt explained, they spend no more than 0.25 man-years on this product, which permits negligible (if any) quality control. Although there are 7280 stations in the GHCN network, only a fraction of these occur as up-to-date […]
Because of the puzzles in trying to replicate the NOAA graphic from archived data, I’ve also tried to replicate the HadCRU plots from archived data. Hu McCulloch has criticized the highly inappropriate use of Mercator projections by climate scientists and, as an exercise, I figured out a fairly simple method of plotting these results in […]
GISS has been providing a considerable amount of intermediate information on their results. Unfortunately, it’s been provided in binary format that is presumably suited for people who speak Fortran with a Unix accent. I presume that such people converse with one another in medieval Latin. It’s not very handy for people who use modern languages. […]
Are you like me and a little puzzled as to exactly how the GHCN-GISS problem happened? GISS blamed their supplier (NOAA GHCN). Unfortunately NOAA’s been stone silent on the matter. I checked the Russian data at meteo.ru and there was nothing wrong with it. Nor is there anything wrong at GHCN-Daily for stations reporting there. […]
Released today on the promised schedule are CRUTEM3 and HadCRUT3 for October 2008. October 2008 was in the top 8 crutem3 (0.517 deg C)and in the top 6 hadcru3 (0.440 deg C) Octobers. Because our collective eyes right now are fairly attuned to the colors of these grids and how changes in individual stations affect […]
It’s colder in Russia in October than in September, as Napoleon found out to his cost in 1812. Sitting in the ashes of a ruined city without having received the Russian capitulation, and facing a Russian maneuver forcing him out of Moscow, Napoleon started his long retreat by the middle of October. Flash forward almost […]
In my post December 1986, I presented a histogram showing the GISS estimate of December 1986 minus the actual for GHCN stations in Europe and Russia. As noted, GISS under-estimated December 1986 for this region by a greater than 2 to 1 margin. The result was, when GISS combined multiple records for a single station, […]
After I posted GISS Spackle and Caulk, a number of commenters marveled at the symmetry of the histogram (GISS temperature estimate minus actual temperature). Some were dismayed that there was not a clear warming bias in the plot. Others were giddy for the very same reason. A few noted (as I hoped) that the differences […]
John A writes: I’ve installed the “unfancy quotes” plug-in which now means that code published on this blog can now be cut/pasted into R without any further messing about (try the code below, for example). For previous R codes, the plug-in does not change the fancy quotes, unless Steve just opens the post for edit […]
I’ve spent a lot of time on this blog showing how badly maintained and situated the stations in the USHCN network are. And rightly so, the majority of them have issues. But, finding the good ones is actually more important, because they are the ones that hold the true unpolluted temperature signal. Unfortunately, the “good […]
Climate Audit 