Urban Heat Island Effects on U.S. Temperature Trends, 1973-2020: USHCN vs. Hourly Weather Stations

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 New Look at the Urban Heat Island Effect

By Andy May Nicola Scafetta has just published a new paper in Climate Dynamics examining evidence of the urban heat island (UHI) effect (Scafetta, 2021). The paper is not paywalled…

More surfacestations project vindication: Strong UHI temperature biases confirmed in USA

WUWT readers may recall that NOAA did an experiment at Oak Ridge National Laboratory that vindicated my findings about the effects of local urbanization on surface temperature measurements. The urban…

The Megacities Are Cooking

Guest Post by Willis Eschenbach [OK, had to start over, had bad numbers for the areas. Graphics have been replaced. I was using “core area” but I should have been…

Poorly sited weather station leads to a fake record high in Germany

From Pierre Gosselin: Lingen Cheated: Germany’s New All-Time Record High Resulted From DWD Weather Service Lousy Station Siting During last week’s record-setting European heat wave, Germany’s previous record of 40.3C…

Scafetta on UHI

Guest post by Rud Istvan Charles the Moderator asked via email whether the following Scafetta paper had any merit? I opined yes, so here is another possible guest post. This…

Our Urban “Climate Crisis”

By Jim Steele Published in Pacifica Tribune May 14, 2019 What’s Natural Our Urban “Climate Crisis” Based on a globally averaged statistic, some scientists and several politicians claim we are…

Mosher: “microsite bias matters more than UHI, especially in the first kilometer”

Urban Stations in GHCN V4. Guest post by Steven Mosher Background The recent post at WUWT covered a new analysis by Goddard & Tett (hereafter GT) showed how UHI has…

BIG NEWS – Verified by NOAA – poor weather station siting leads to artificial long term warming

I’ve been saying for years that surface temperature measurements (and long term trends) have been affected by encroachment of urbanization on the placement of weather stations used to measure surface…

New paper: Urbanization has increased minimum temperatures 1.7K in the UK

From the Royal Meteorological Society. (h/t to reader NJSnowFan) How much has urbanisation affected United Kingdom temperatures? Ian L. M. Goddard, Simon F. B. Tett Abstract This study aims to…

The Climate Sciences Use Of The Urban Heat Island Effect Is Pathetic And Misleading

By Geoffrey H Sherrington, Spinal Tap’s Nigel Tufnel demonstrates his hifi speakers are louder because the numbers all go to 11. https://www.youtube.com/watch?v=KOO5S4vxi0o Scientific control knobs for climate change have to…

Urban Heat Island Influence Inadequately Considered in Climate Research

Guest Opinion: Dr. Tim Ball The Intergovernmental Panel on Climate Change (IPCC) deliberately limited climate science to focus on CO2 and temperature. The United Nations Framework Convention on Climate Change…

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…

Surprise: Cold wave reveals potential benefits of urban heat islands

From the PRINCETON UNIVERSITY, ENGINEERING SCHOOL and the “UHI is good for something” department. Still, it’s not a good place to measure climate change. The concrete and asphalt that make…

New paper shows issues with temperature records: Comparing the current and early 20th century warm periods in China

Guest post by Dr. Willie Soon, Dr. Ronan Connolly & Dr. Michael Connolly Recently, a new paper which we co-authored with five other researchers was published in Earth-Science Reviews entitled,…

Study: UHI in Los Angeles is driving off coastal clouds that dampen California wildfires

From the THE EARTH INSTITUTE AT COLUMBIA UNIVERSITY and “an actual case of man-made climate change” department. Urbanization and climate change combine to heighten danger Sunny California may be getting too…

China's Urban Heat Island Problem

How does urban-induced warming in Beijing interact with air temperature in summer? INSTITUTE OF ATMOSPHERIC PHYSICS, CHINESE ACADEMY OF SCIENCES Beijing has undergone several important urbanization development stages since late…

Study: city street & building layout determine intensity of the Urban Heat Island effect

How cities heat up The way streets and buildings are arranged makes a big difference in how heat builds up, study shows CAMBRIDGE, Mass. – The arrangement of a city’s…

Study: 'Heat island' effect could double climate change costs for world's cities

From the UNIVERSITY OF SUSSEX and overheated climate science department, comes a claim that just doesn’t seem plausible, suggesting that in the future, nearly 11% of a “worst-off city” gross…

Study: UHI in Hong Kong accounts for most 'warming' since 1970

From the INSTITUTE OF ATMOSPHERIC PHYSICS, CHINESE ACADEMY OF SCIENCES How much warmer has Hong Kong’s urban area become during the past 4 decades? Characterizing the urban temperature trend using…

Study: Haze in China amplifies UHI effect

Study reveals surprising role of haze in the warming of Chinese cities Research reveals that impacts of haze pollution in the US and China vary significantly From the YALE SCHOOL…

Important study: Waste heat is a major source of national warming, significantly pollutes climatic record

I covered a similar study back in 2008 which you can read about here. This study takes it to a national level, suggesting once again that surface temperature records are…

Future summers could be hotter than any on record

From the NATIONAL SCIENCE FOUNDATION and the “it’s always hotter in the city than the country department comes this collection of spin: In 50 years, summers across most of the globe…

Study: UHI affects the urban growing season

From the UNIVERSITY OF WISCONSIN-MADISON Spring comes sooner to urban heat islands, with potential consequences for wildlife MADISON, Wis. — With spring now fully sprung, a new study by University…