Older records may be fragile but was diligence any better in recent decades? Guest essay by Bob Fernley Jones Background: Out of over 20,000 Bureau of Meteorology (BoM) weather stations on record [1], 112 have had their data “corrected” under a process known as homogenisation, (the acronym for it in full is ACORN-SAT). Oddly though,…
An analysis of the U.S. Historical Climatological Network (USHCN) shows that only about 8%-1% (depending on the stage of processing) of the data survives in the climate record as unaltered/estimated data. Guest essay by John Goetz A previous post showed that the adjustment models applied to the GHCN data produce estimated values for approximately 66% of…
Guest essay by John Goetz As noted in an earlier post here, approximately 66% of the GHCN record is estimated after processing by the GHCN adjustment models. In the current GHCN data set, there are 226 unique country codes represented. Following are the top and bottom stewards of temperature data, by country, based on the…
Summary of GHCN Adjustment-Model Effects on Temperature Data Guest essay by John Goetz As the debate over whether or not this year will be the hottest year ever burns on, it is worth revisiting a large part of the data used to make this determination: GHCN v3. The charts in this post use the dataset…
Apologies to singer Tony Bennett for the title. Our own “Charles the moderator” writes in with this curious picture from Weather Underground showing downtown San Francisco at about 2:15PM September 8th, 2015. The disparity of temperature just a few blocks away is quite stunning. In the two temperatures circled in the downtown area yesterday there is…
Every once in a while a new reporter arrives onto the climate scene that immediately thinks they know everything there is to know about climate, and therefore doesn’t need to interview the people he/she writes about, ask questions of them, research the facts, or get any other points of view to reflect balance whatsoever, because…
As readers know, the recent paper Karl et al. 2015, written by the head of the National Climatic Data Center now NCEI, went to great lengths to try to erase “the pause” from the surface temperature record using a series of adjustments. Those adjustments are deemed unacceptable and criticized by some climate scientists, such as…
