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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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 city summers brutally hot might not be a bad thing during winter’s deep freeze. Researchers from Princeton University have found that the urban heat island…

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 sunny. Increasing summer temperatures brought on by a combination of intensifying urbanization and warming climate are driving off once common low-lying morning clouds in many…

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 1978. Linked with urbanization, the so-called “urban heat island effect” is a key problem caused by urban land expansion. Such changes in air temperature in…

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 seasonal unit root analysis: Hong Kong from 1970 to 2015 Scientists from Macao Polytechnic Institute are pioneers in exploring urban temperature in Hong Kong 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 OF FORESTRY & ENVIRONMENTAL STUDIES A new Yale-led study published in the journal Nature Communications sheds light on the surprising role that haze in China…