Tag Archives: UHI

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 … Continue reading

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Posted in Climate data, Temperature | Tagged , , , , , | 196 Comments

Is Fighting Global Warming the Solution to Water Shortages in Malawi (or Elsewhere)?

Guest essay by E. Calvin Beisner In late May two evangelical environmentalists, recently returned from visiting Malawi, published articles in which they said poor Malawians are suffering from reduced rainfall caused by manmade global warming. Jonathan Merritt wrote for Religion … Continue reading

Posted in Agriculture, Land use land cover change, UHI | Tagged , , , , , , , , | 90 Comments

The Chinese demonstrate that UHI has a real and essential effect on regional climate change

Study finds that urbanization has considerable influence on the regional climate change, they even blame proximity to air-conditioning as a factor. Press release from Science China Press (full paper follows) Urbanization and surface warming in eastern China A recent study … Continue reading

Posted in Land use land cover change, UHI | Tagged , , , , , , , | 33 Comments

Climate Craziness of the week – with the physical signature of UHI staring them right in the face, Mann & Borenstein go with their ‘gut’ instincts

Some people wonder if Michael Mann is simply an activist masquerading as a scientist, this lends credence to that idea. I wonder if Dr. Mann has ever visited weather stations in China to understand what is going on there? I … Continue reading

Posted in Climate Craziness of the Week, UHI | Tagged , , , , | 85 Comments

Berkeley Earth, Very Rural and Not

Jet exhaust as climate forcing Guest Post by Willis Eschenbach The good folks over at the Berkeley Earth Surface Temperature project have published their paper about urban heat islands. It’s called “Influence of Urban Heating on the Global Temperature Land … Continue reading

Posted in Land use land cover change, Surfacestations paper, UHI | Tagged , , , , , , , | 257 Comments

Preliminary comments on Hausfather et al 2013

There’s a new paper out today, highlighted at RealClimate by Hausfather et al titled Quantifying the Effect of Urbanization on U.S. Historical Climatology Network Temperature Records and published (in press) in JGR Atmospheres. I recommend everyone go have a look … Continue reading

Posted in Climate data, UHI, Watts et al 2012 | Tagged , , , | 106 Comments

Station bias – an old problem

A number of readers have commented about the story from Sunday about NOAA’s experiment at Oak Ridge Laboratory to determine the warming effects of siting suggesting that the experiment was long overdue. many found it surprising that it has taken … Continue reading

Posted in Surfacestations paper, UHI | Tagged , , , , , | 41 Comments

Via experiment, NOAA establishes a fact about station siting: ‘nighttime temperatures are indeed higher closer to the laboratory’

WUWT readers may recall that I wrote about this experiment being performed at Oak Ridge national Laboratory to test the issues related to station siting that I have long written about. NOAA’s ‘Janus moment’ – while claiming ‘The American public … Continue reading

Posted in Surfacestations paper, UHI | Tagged , , | 182 Comments

Unique paper looks for natural factors in station data–shows significant probabilities of natural signal

Since we have been paying a lot of attention to the surface record given the recent revelations surrounding the adjustments to data and NOAA’s release of the State of the Climate  Report claiming that the USA had the hottest year … Continue reading

Posted in Climate data, UHI | Tagged , , , , , , | 51 Comments

Measuring UHI on a bike produces a new paper

While NCDC’s Dr. Thomas Peterson tries to ignore UHI, from Hans Von Storch at Die Klimazwiebel (h/t to Jos de Laat) we learn that many other people are actively measuring it. WUWT reader may remember my “do it yourself UHI … Continue reading

Posted in UHI | Tagged , , , , , | 58 Comments

Law of unintended consequences bites the ‘white roof UHI solution’ – causes reduced rainfall

From Arizona State University Researchers emphasize evaluation of tradeoffs in battling urban heat island Urbanization will increase average temperatures in Arizona’s Sun Corridor and white roofs can combat that, but not without consequences for the region’s hydroclimate TEMPE, Ariz. – … Continue reading

Posted in UHI | Tagged , , , | 90 Comments

Recent paper demonstrates relationship between temperature and population density in the UHI of New Delhi

This gives credence to Dr. Roy Spencer’s population adjusted ISH surface temperature data for the USA Impact of population density on the surface temperature and micro-climate of Delhi Javed Mallick1 and Atiqur Rahman2,* 1Department of Civil Engineering, King Khalid University, … Continue reading

Posted in Climate data, UHI | Tagged , , , , | 50 Comments

The UHI’s of Texas are upon you

Joe D’Aleo suggested earlier today that I take a look at some of the data from NCDC’s web page called “US climate at a glance“. This page allows comparisons of the actual data not anomalies used in the NCDC USHCN … Continue reading

Posted in Climate data, UHI | Tagged , , , | 105 Comments

Trees do 8 times better in the New York City Urban Heat Island

From the The Earth Institute at Columbia University Do urban ‘heat islands’ hint at trees of future? Common oaks get a boost in New York’s Central Park City streets can be mean, but somewhere near Brooklyn, a tree grows far … Continue reading

Posted in UHI | Tagged , , , , , , , , | 76 Comments

Warming in the USHCN is mainly an artifact of adjustments

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. ============================================================== USHCN Surface Temperatures, 1973-2012: Dramatic Warming Adjustments, Noisy Trends Guest post by … Continue reading

Posted in Climate data, Weather_stations | Tagged , , , , , , | 152 Comments

New paper: UHI, alive and well in China

JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 116, D14113, 12 PP., 2011 doi:10.1029/2010JD015452 Observed surface warming induced by urbanization in east China Key Points The rapid urbanization has significant impacts on temperature over east China A new method was developed to dynamically … Continue reading

Posted in UHI | Tagged , , , | 53 Comments

Blogging from Indianapolis – Technology is amazing

This picture is where I’m blogging from as I write this. The roof of a parking garage in downtown Indianapolis. My laptop in the foreground, the offices of the Indianapolis Star newspaper in the background. Digital Camera + Laptop+ Free … Continue reading

Posted in Fun_stuff | Tagged , , | 13 Comments