Not exact matches
This could be because of the urban
heat island effect, which
causes temperatures in the city to rise as much 10 °C compared with those in the surrounding areas.
Turns out, the
island's central land area soaks up just enough
heat to
cause effects on the site's climate measurements under certain conditions.
Although he doesn't actually come out and say it, Evans suggests that the global warming trend in the surface temperature record is an artifact
caused by the urban
heat island (UHI)
effect:
The thermometer network is made up of a patchwork of non-research quality instruments that were never made to monitor long - term temperature changes to tenths or hundredths of a degree... Furthermore, land - based thermometers are placed where people live, and people build stuff, often replacing cooling vegetation with manmade structures that
cause an artificial warming (urban
heat island, UHI)
effect right around the thermometer.
Because they live and work in highly urbanized areas that have the necessary attributes that
cause a positive temperature feedback - often referred to as the Urban
Heat Island effect (UHI).
a), b) & c) combined imply that the urban -
heat -
island effect is NOT increasing on a global basis, and therefore CAN NOT serve as the «real»
cause giving rise to the impression of global warming as an artefact.
This is due to a phenomenon called the urban
heat island effect that
causes air temperatures in New York City and other major cities to be warmer than in neighboring suburbs and rural areas.
2) Anthropogenic thermal dissipation related
effects have been unfortunately oversimplied to the point of
causing confusion by the term «urban
heat island.»
Some of the temperature increases shown by Dr Jones in fact are
caused by temperature recording stations that were once in rural locations on the outskirts of cities now being affected by the Urban
Heat Island effect as urban development surrounded the weather stations.
Furthermore, land - based thermometers are placed where people live, and people build stuff, often replacing cooling vegetation with manmade structures that
cause an artificial warming (urban
heat island, UHI)
effect right around the thermometer.
FAIL The nonclimatic
effects they are talking about are Urban
Heat island trends
caused by «socioeconomic determinants of surface processes and data inhomogeneities.»
One of the more common arguments you hear from global
heating deniers and skeptics is that the urban
heat island effect is
causing global temperature measurements to look a lot hotter than they actually are.
Professor Muller and his colleagues, including this year's physics Nobel winner, Saul Perlmutter, had suspected the previous work had been tainted by the «urban
heat island effect», where increasing urbanisation around weather stations was
causing the temperature increases recorded over the past half - century.
I would also observe that this data is uncorrected for urban
heat island effects (as cities urbanize they get hotter, and
effect that is different than CO2 -
cause global warming and is usually corrected for in global warming studies).
By using trees in the cities, we can moderate the
heat -
island effect caused by pavement and buildings in commercial areas.