The question today is: how does Hansen calculate quarterly and annual averages when there are missing values? It’s not obvious. The issue arose in the previous puzzle in trying to calculate Hansen’s adjustment prior to combining scribal versions. Essentially what happens as reported in the prior post is that when there is a missing value, […]
For your Sunday edification, today’s crossword puzzle pulls together 3 examples of Hansen data “combining”. The question is to find an AlGore-ithm that accounts for all three versions. The three data sets each have 3 columns: the first two are data versions; the third column is Hansen-combined. In each case, there is an overlap between […]
I’ve got an idea of how Hansen sliced the salami in Praha-Libus, an enterprise no doubt dear to Lubo” heart or, at least, stomach. There are only 2 series in play. Version 61111520000-0 goes from 1971 to 1991 and version 61111520000 – 1 goes from 1986 to 2007. For all values where there is only […]
John Goetz sent me some scanned excerpts from Hansen and Lebedeff 1987 which (only somewhat) clarify what Hansen’s doing – although the descriptions below do not clarify the Kalakan problem of how the combined station record becomes colder than any of the measurements in the period. There are somewhat different issues in combining records which […]
Ever wonder how to adjust in Russia – or what sot of gestures Russian adjusters make when they’re jesting and not jetsetting? Here are Hansen’s urban adjustments for 4 different Russian “urban” sites. In the graphics shown, an upward adjustment in the past is an upward re-statement to increase past temperatures to compare with present […]
I’ve been rather looking forward to a post on Waldo in India. I’ve been to India 4 times, though not for many years. I’m probably the only climateaudit reader who’s swum across the Ganges and one of the few pictures of my 1968 that’s survived is me in the Ganges. Today Waldo has another potentially […]
I’ve noticed that even Hansen’s rounding seems to give a little edge to modern values relative to older values. It’s not a big effect, but Hansen doesn’t seem to like to leave any scraps on the table. Cara, Siberia has 3 versions – all of which appear to be the same station; all 3 versions […]
A CA reader, John Goetz, has written in with a mind-numbing puzzle related to Waldo in Bagdarin, Siberia, where Waldo appears to have experienced an adjustment unusual even by the standards of NASA chiropractors.
Anthony’s presentation at Roger Pielke Sr’s seminar at UCAR appears to have been well-received. He’s posted some interested online reports at his blog and been written up here and here. In response to the criticisms about the failure of sites to meet standards, Lawrimore of NOAA said that they already adjusted for these problems: For […]
We have a new article from the Mannian school, this time involving supposedly “independent” NAS panelist, Doug Nychka, and geologist Caspar Ammann, who is very enthusiastic about calculating covariances using Mannian proxies. The lead author is a statistician, Bo Li. The article purports to use MBH99 proxies and says we do not critically evaluate these […]
Climate Audit 