ushcn, Tag

Hundreds of ‘ghost’ climate stations are no longer operational; instead they are assigned temperatures from surrounding stations.

Accordingly the motto of the oldest scientific institution is Nullius En Verba: Take no one’s word!

I argue that, based upon the importance of quality temperature trend calculations to national energy policy, a new dataset not dependent upon the USHCN Tmax/Tmin observations is required.

A review of state-of-the-art climate data tells a different story than what NOAA tells the public. While media outlets scream “hottest ever” for the world in June and July (it’s summer) and opportunistic...

AMS fellow Joe D’Aleo writes of a time when Thomas Karl, former director of the National Climatic Data Center (NCDC) actually believed that UHI and station siting was a problem that created a warm bias...

Guest Essay By Walter Dnes There have been a number of posts on USHCN temperature adjustments, including 1, 2, 3, 4, 5 and 6. They have focused primarily on annual adjustments. Whilst looking into the USHCN adjustments,...

Yesterday, NCDC released Version 2.5 of the USHCN data set. For those who don’t know, this is the U.S. Historical Climatology Network (USHCN) which NCDC considers a “gold standard” for US temperature measurements....

Some correspondence from NCDC on that missing data from 2008 to the present: Dear Anthony, The problem was caused by a glitch in an IT hardware transition in late July at NCDC.  This affected the period of record files on...

I noted with a chuckle today, this statement over at the California Academy of Sciences “Climate Change Blog”: I think that we all need to be careful of not falling into the unqualified and inexpert morass characterized...

The first press release announcement thread is getting big and unwieldy, and some commenters can’t finish loading the thread, so I’m providing this one with some updates...

Andrew Revkin asked me to provide comments on this article of his where the National Climatic Data Center was asked to respond to Watts et al 2012: A Closer Look at Climate Studies Promoted Before Publication Here is what...

PRESS RELEASE – U.S. Temperature trends show a spurious doubling due to NOAA station siting problems and post measurement adjustments. Chico, CA July 29th, 2012 – 12 PM PDT – FOR IMMEDIATE RELEASE A comparison and...

PRESS RELEASE – July 29th, 2012 12PM PDT – FOR IMMEDIATE RELEASE A reanalysis of U.S. surface station temperatures has been performed using the recently WMO-approved Siting Classification System devised by METEO-France’s...

Dr. Roger Pielke Sr. draws attention today to a new study that cites Fall et al. 2011 aka the “Surfacestations Paper” that I co-authored, which was a follow up to my original surveys published in Watts 2009. The...

Dr. Roy Spencer proves what we have been saying for years, the USHCN (U.S. Historical Climatology Network) is a mess compounded by a bigger mess of adjustments. ==============================================================...