A U.S.-European partnership, the Sentinel-6 Michael Freilich spacecraft will begin a five-and-a-half-year prime mission to collect the most accurate data yet on global sea level and how our oceans are…
Category: measurement
Caution: Pretty Pictures Can Fool You
Guest Essay by Kip Hansen In today’s digital and Internet-of-Things world, it is easy to transform information into images — graphs, charts and other visuals that are colorful and…
In Search of the Standard Day
By Dr Fabio Capezzuoli Recent posts and discussions on WUWT regarding air temperature sampling frequencies and their influence on the daily average – propagating to monthly and yearly trends – demonstrated…
Sharpening a Cyclical Shovel
Guest Post by Willis Eschenbach There are a number of lovely folks in this world who know how to use a shovel, but who have never sharpened a shovel. I’m…
Weather Observers Misread Wind Speeds, Skewing a Major Hazards Database
Weather spotters who report storm measurements and observations to a U.S. national compendium of storm data often exaggerate winds speeds—by about one third, on average. By Elizabeth Deatrick EOS.org People…
Mauna Loa Daily Meteorology
Guest Post by Willis Eschenbach As a confirmed data junkie, I’m fond of hourly data. The interesting processes in the climate system unfold on the scale of minutes and hours,…
What Are They Really Counting?
Guest Essay by Kip Hansen WARNING: This is not a technical essay. There is almost no science in it. It is not about AGW or any issue involved in the…
Are We Chasing Imaginary Numbers?
Guest Essay by Kip Hansen Spoiler Alert: This essay is not about the mathematical entity the imaginary number. I do think that an essay here about imaginary numbers of…
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…
