In the 2007 analysis of the GISS dataset, Detroit Lakes was used as a test case. (See prior posts on this station here). I’ve revisited it in the BEST data set, comparing it to the older USHCN data that I have on hand from a few years ago. First, here is a simple plot of […]
Long-time CA visitors will recall the events in mid Sept 2007 when NASA GISS made abrupt changes to US historical temperature data without annotation – a month after the Y2K changes. Some fresh light has been shed on these events by the NASA FOI. At the time, I observed: no wonder Hansen can’t joust with […]
The word “hide” has obviously attracted a lot of attention lately – “hide the decline” even occasioning its own song. Today I’d like to discuss the following remarkable instructions by a NASA employee in the recently disclosed NASA emails (available at Judicial Watch): Robert, please move to the CU site and hide this after Jim […]
Some long time Climate Audit readers may remember this famous picture of the USHCN climate station of record in Detroit Lakes, MN. This is what I wrote on July 26th, 2007 about it in: How Not to Measure Temperature, Part 25 This picture, taken by www.surfacestations.org volunteer Don Kostuch is the Detroit Lakes, MN USHCN climate […]
During the past few days, I’ve been assessing the GHCN-Daily dataset, which is a very large data set and plan to do a number of posts on this topic, including a description of the data set. It turns out that literally hundreds of stations that expire around 1989 or 1990 in the NASA data set […]
Since August 1, 2007, NASA has had 3 substantially different online versions of their 1221 USHCN stations (1221 in total.) The third and most recent version was slipped in without any announcement or notice in the last few days – subsequent to their code being placed online on Sept 7, 2007. (I can vouch for […]
In the “good old days” (August 25, 2007: after they had corrected their Y2K error), I downloaded Hansen’s “combined” version (his dset=1). Jerry Brennan observed today that Hansen appeared to have already “moved on”, noticing apparent changes in Detroit Lakes and a couple of other sites. Here is a comparison of the Detroit Lakes (combined) […]
In my opinion, one of the main purpose of compiling the Hansen code is to produce intermediate versions to determine what Hansen really did. Today I’m going to compare the Step 0 version of Detroit Lakes MN (familiar to many readers from the Y2K error) as produced from running Hansen’s code with a current USHCN […]
There’s been quite a bit of publicity about Hansen’s Y2K error and the change in the U.S. leaderboard (by which 1934 is the new warmest U.S. year) in the right-wing blogosphere. In contrast, realclimate has dismissed it a triviality and the climate blogosphere is doing its best to ignore the matter entirely. My own view […]
The GISS homepage formerly said: The NASA GISS Surface Temperature Analysis (GISTEMP) provides a measure of the changing global surface temperature with monthly resolution for the period since 1880, when a reasonably global distribution of meteorological stations was established. Input data for the analysis, collected by many national meteorological services around the world, is the […]
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