Human error in the surface temperature record

Guest essay by John Goetz As noted in an earlier post, the monthly raw averages for USHCN data are calculated with up to nine days are missing from the daily…

Approximately 92% (or 99%) of USHCN surface temperature data consists of estimated values

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.…

Winners and losers in the GHCN estimation derby

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…

Approximately 66% of global surface temperature data consists of estimated values

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,…

Can Temperature Adjustments Right a Wrong?

Guest Post by John Goetz Adjustments to temperature data continue to receive attention in the mainstream media and science blogs. Zeke Hausfather wrote an instructive post on the Climate Etc.…

Just Another East Coast Blizzard

Guest post by John Goetz I read Judah Cohen’s opinion piece in the New York Times yesterday and could not decide if he was being serious or not when he…

GISS Step 1: Does it influence the trend?

Guest post by John Goetz The GISStemp Step 1 code combines “scribal records” (multiple temperature records collected at presumably the same station) into a single, continuous record. There are multiple…

And now, the most influential station in the GISS record is …

Guest post by John Goetz The GISS temperature record, with its various adjustments, estimations, and re-estimations, has drawn my attention since I first became interested in the methods used to…

GISS: World's airports continue to run warmer than ROW

Guest post by John Goetz As noted in the previous post, GISS has released their monthly global temperature summary for June, 2009. This month’s whopping anomaly of 0.63C is once…

Using the Dead to Fight AGW

by John Goetz In what seems to be a script straight from a Monty Python classic, the good folks of Santa Coloma de Gramenet in Spain seem to have found…