Quote of the Week: That time when climate science believed UHI was causing most of the twentieth century warming

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. He writes: Tom Karl whose paper in 1988 defined the UHI adjustment for the first version of USHCN (which was…

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The Original Temperatures Project

Guest essay by Frank Lansner Presentation of the Original Temperatures project. Contents: 1. Introduction 2. Methods 3. Adjustments of temperature data 3.1. Adjustments: HISTALP – by the Austrian ZAMG 3.2. Adjustments: ECA&D – by the Dutch KNMI 3.3. Adjustments: The BEST project 3.3.1 BEST / Austria 3.3.2 BEST / Denmark 3.3.3 BEST / Hungary 3.3.4 BEST / UHI 3.3.5 BEST prefer…

First time in 20 years – more daily record lows than daily highs that were either tied or set in 2013

2013 was a cool year in many ways. Most interestingly, the last year this split between highs and lows happened in the USA, in 1993, we had the eruption from Mt. Pinatubo the prior year which ejected so much aerosol into the atmosphere that it blocked sunlight and cooled the planet. Source: http://www.woodfortrees.org/plot/hadcrut4gl/from:1978 This year,…

Claim: November 2013 is the 'warmest ever' – but will the real November 2013 temperature please stand up?

Lots of clima-hullaballo this week in the media thanks NOAA and this announcement in NOAA’s “State of the Climate” report seen here: http://www.ncdc.noaa.gov/sotc/global/ They state: The combined average temperature over global land and ocean surfaces for November 2013 was record highest for the 134-year period of record, at 0.78°C (1.40°F) above the 20th century average…

Will the real The Death Valley 134F high temperature record please stand up? NWS says one on file at NCDC is a 'fake'

“…someone made this fake form off the original and even forged Oscar Denton’s name on it.” Readers may recall that last week I noticed differences in the two “official” paper records presented by NOAA/NWS and the National Park Service in their respective web announcements about the 100 year anniversary of the 134°F reading in Greenland…

NOAA corrects 'State of the Climate' – offers no credit

NOAA Corrects Their 2012 State of the Climate Report – 2012 Was NOT the Warmest La Niña Year on Record Guest post by Bob Tisdale With as little fanfare as possible, NOAA has corrected their erroneous claim in their 2012 State of the Climate Report that of 2012 as the warmest “La Niña year” on record.…