Early on in my www.surfacestations.org project I got complaints like “why don’t you ever show a cooling bias?”. Problem was, there weren’t a lot of cold bias stations to show. Other…
Category: Weather_stations
How not to measure temperature, part 50. How to make a rural station "urban"
One of the things that happens when your work becomes well known is that people send you things to look at. Such is the case for today’s subject. Here we…
How not to measure temperature, part 49. Alaska's COOP Stations
Earlier I wrote up an essay on the NOAA climate station at Cordova, AK. Click thumbnail at left for a larger image. This station was directly next to the village diesel power plant.…
How not to measure temperature, part 48. NOAA cites errors with Baltimore's Rooftop USHCN Station
I happened across a NOAA internal training manual a couple of weeks ago that contained a photo of a USHCN official climate station that I thought I’d never get a photo…
Guest Weblog: Ben Herman Of The University Of Arizona – Maximum Temperature Trends and the HO83
HO83 ASOS Hygrothermometer (temperature/dewpoint sensor) Note: This was originally posted on Dr. Roger Pielke Sr’s blog Climate Science at www.climatescience.org I’m reposting it here since we’ve had a number of posts on…
A weeks worth of data from my new MMTS unit
Last week you may recall that I posted about my new self contained MMTS unit that I’m experimenting with as a possible replacement of as a check system for NOAA’s…
How not to measure temperature, part 47
Ajo, AZ USHCN Station photographed by Bob Thompson But wait, theres more: I’ve posted about stations that had proximity to a/c units before, but this one is of particular interest…
A typical day in the Stevenson Screen Paint Test
Experiment config on July 13th. The screens were subsequently moved further apart. Note aspirated air temperature reference in forground. I’ve been sorting through some of the data, and have found many…
Making NOAA's MMTS wireless
This is a custom wireless MMTS with internal data logger that I built, view from my backyard. NOTE: yes I know it is not the best placement, this is just…
Inside the ASOS HO83 Temp/dewpoint sensor
HO83 ASOS Hygrothermometer (temperature/dewpoint sensor) Much has been written about problems with artificially high temperature readings due to the HO83 aspirated air temperature/dewpoint temperature sensor used on NOAA Automated Surface…
How not to measure Temperature, part 46. Reno's USHCN Station
Last summer I attempted to do a survey of Reno’s USHCN official climate station. But I was thwarted by its placement at the Reno International Airport due to security and…
California USHCN station surveys are complete
California USHCN Stations I’m pleased to announce completion of USHCN station surveys for California’s USHCN stations. There were some challenges in completing some surveys. Some places were inaccessible, such as the…
Weathering and Thermometer Shelters
Former Virginia State Climatologist Patrick J. Michaels wrote an op-ed about his paper with Ross McKitrick from Canada’s University of Guelph in an American Spectator column today about the surface…
Spotting Weather Stations in SFO
San Francisco’s official weather stations, new and old locations are in this photo – can you find them? Last Thursday evening I had the pleasure of meeting up with Steve…
How not to measure temperature, part 45
I’ve covered California’s temperature stations and their exposure problems extensively, now it’s time to head north to Alaska. When you think of Alaska, you think of cold, snowy, pristine remote…
Spot the thermometer in this photo
I have a new tool for evaluation of the micro-site measurement environment near thermometers. The first site I’ve surveyed has not one but two potential biases. Can you spot them? Can…
USHCN National Weather Station Quality Plot
Early in the project, one of the criticisms heard against the surfacestations.org effort was that there had been “cherry picking” going on in the selections of stations to survey, and that…
How not to measure temperature, part 44
I’ve seen a couple of weather stations mounted on rooftops before, for example the station in Eureka, CA was on the roof of the post office for many years. This…
How not to measure temperature, part 43
Continuiung our tour of California climate monitoring stations, we visit the Portola train yard, where they not only switch freight, but measure the temperature too. This station is # 04-7085 and…
How not to measure temperature, part 42
Continuing our tour of some of the worst climate monitoring stations in California, we come to San Jose. In previous posts we’ve seen stations put next to parking lots. In…
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