Search Results for: HO83

Guest Weblog: Ben Herman Of The University Of Arizona – Maximum Temperature Trends and the HO83

Posted on January 21, 2008 by

HO83 ASOS Hygrothermometer (temperature/dewpoint sensor) Note: This was originally posted on Dr. Roger Pielke Sr’s blog Climate Science at http://www.climatescience.org I’m reposting it here since we’ve had a number of posts on the HO83 thermometer inaccuracy and it’s impact on the surface … Continue reading →

Posted in Weather_stations | Tagged , , | 3 Comments

Inside the ASOS HO83 Temp/dewpoint sensor

Posted on January 10, 2008 by

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 Observing Stations (ASOS). The most famous problem occurred in Tucson, … Continue reading →

Posted in Weather_stations | Tagged , , , , | 6 Comments

Connecticut’s new short lived all time high temperature record corrected – but was it ever a record at all?

Posted on July 30, 2011 by

The recent heat wave in the Midwest and the eastern United States has been characterized by all sorts of exaggerated claims. One even made it into Wikipedia as an “official” all time high record. From http://en.wikipedia.org/wiki/U.S._state_temperature_extremes Dr. Roy Spencer alerted … Continue reading →

Posted in Climate data, records, Weather, Weather_stations | Tagged , , , , , , | 64 Comments

Record highs? – NOAA staffers are beginning to doubt the accuracy of the measurement system

Posted on July 7, 2011 by

While Joe Romm squawks about record highs being “obscenely hot” over at Think-Climate Progress, there’s a quiet bit of questioning going on within NOAA about the veracity of the surface temperature measurements, particularly related to ASOS stations at airports, which … Continue reading →

Posted in Climate data, Weather_stations | 61 Comments

How not to measure temperature, part 88 – Honolulu’s Official Temperature ±2

Posted on June 16, 2009 by

People send me stuff, some days my email explodes. Today I got all sorts of things about Obama and John Holdren and the new NCDC climate spincycle which Steve McIntyre has dubbed Chucky Returns Part IV. That one made me … Continue reading →

Posted in Climate_change, measurement, media, Weather_stations | 81 Comments

Misguided thinking: All time low temperature record for Illinois called into question by NWS citing lack of confidence in equipment. “ASOS better than AWOS”

Posted on January 17, 2009 by

ASOS (left) AWOS (right) – both at airports click for larger images People send me stuff. Last night I got an email from reader Andrew Schut that said: See public information statement below.  I’m perplexed. ASOS was put in for … Continue reading →

Posted in Climate data, Climate_change, Weather_stations | 91 Comments

Feeling the Heat, is it real or is it ASOS?

Posted on October 25, 2008 by

Guest post by Russ Steele (Note Russ was the very first volunteer for surfacestations.org, I’m traveling today, so I’ll comment later on this investigation. – Anthony) Feeling the Heat was published by Environment California a non-profit group a few weeks … Continue reading →

Posted in Climate_change, Weather_stations | 39 Comments

How not to measure temperature, part 60

Posted on April 17, 2008 by

A good number of official climate stations of record in the USHCN network used for climate studies are at airports. All have been converted to the automated ASOS systems, and the placement of these is often chosen to be away … Continue reading →

Posted in Weather_stations | 26 Comments

How not to measure temperature, part 48. NOAA cites errors with Baltimore’s Rooftop USHCN Station

Posted on January 23, 2008 by

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 of.  The Baltimore Customs House.   Baltimore USHCN station circa … Continue reading →

Posted in Weather_stations | 16 Comments

How not to measure Temperature, part 46. Reno’s USHCN Station

Posted on January 10, 2008 by

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 lack of accessible photographic vantage points. Reno’s USHCN station is … Continue reading →

Posted in Weather_stations | 6 Comments