Sentences with phrase «term urban heat»

Indeed, the term urban heat island is used to describe the dome of warm air that frequently builds up over towns and cities.

Not exact matches

Explanation of the urban heat island effect in terms of both temperature and precipitation.

Attributing 0.1 C of the surface record increase to urban heat effects (from micro to macro) in 50 - 60 years is scientifically justifiable without guesswork, and does not refer to a short - term trend.

Local and state governments are already deploying strategies for heat mitigation to reduce urban heat islands, prepare for long - term trends of higher temperatures and plan emergency responses for heatwaves.

«We evaluate to what extent the temperature rise in the past 100 years was a trend or a natural fluctuation and analyze 2249 worldwide monthly temperature records from GISS (NASA) with the 100 - year period covering 1906 - 2005 and the two 50 - year periods from 1906 to 1955 and 1956 to 2005... The data document a strong urban heat island eff ect (UHI) and a warming with increasing station elevation... About a quarter of all the records for the 100 - year period show a fall in temperatures... that the observed temperature records are a combination of long - term correlated records with an additional trend, which is caused for instance by anthropogenic CO2, the UHI or other forcings... As a result, the probabilities that the observed temperature series are natural have values roughly between 40 % and 90 %, depending on the stations characteristics and the periods considered.»

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.

The state of knowledge about urban heat islands around 1980 is described and work since then is assessed in terms of similarities to and contrasts with that situation.

2) Anthropogenic thermal dissipation related effects have been unfortunately oversimplied to the point of causing confusion by the term «urban heat island.»

The green roof will also decrease the «heat island» effect, which is a term used to describe the temperature spike in urban areas compared to nearby rural areas due to environmental disturbances and pollution.

Urban to non-urban temperature differences of several degrees reported in numerous case studies are typically taken under optimal conditions for urban heat island development, with differences reduced considerably in long - term averUrban to non-urban temperature differences of several degrees reported in numerous case studies are typically taken under optimal conditions for urban heat island development, with differences reduced considerably in long - term averurban temperature differences of several degrees reported in numerous case studies are typically taken under optimal conditions for urban heat island development, with differences reduced considerably in long - term averurban heat island development, with differences reduced considerably in long - term averages.

GISS does make an adjustment to deal with potential artifacts associated with urban heat islands, whereby the long - term regional trend derived from rural stations is used instead of the trends from urban centers in the analysis.

«The corresponding reduction of natural vegetation and water bodies results in higher temperatures in urban areas which may seem to be localized effect but in long - term it may contribute to the global heat.»

All terrestrial surface - temperature databases exhibit signs of urban heat pollution and post measurement adjustments that render them unreliable for determining accurate long - term temperature trends.

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