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contributor authorEstournel, Claude
contributor authorVehil, Raoul
contributor authorGuedalia, Daniel
contributor authorFontan, Jacques
contributor authorDruilhet, Aimé
date accessioned2017-06-09T13:59:15Z
date available2017-06-09T13:59:15Z
date copyright1983/01/01
date issued1983
identifier issn0733-3021
identifier otherams-10429.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4145545
description abstractPollutants (gaseous and aerosol) contained in urban atmospheres alter radiative fluxes at the surface.Numerous radiative models have been developed, and while few experimental data are available, results areoften contradictory. We have taken measurements, over several weeks, of downward radiation (solar andinfrared) over the city of Toulouse and a rural reference site. The downward IR flux was larger at the urbansite by day and night (increase between 15 and 25 W m2). Attenuation of the incident solar radiation atthe urban site was observed (30 W m2 in the middle of the day). A radiative model enabled us to show thatthe IR flux increase is mainly due to higher air temperature associated with the urban "heat island." Theenhissivity increase due to the addition of absorbing constituents in the urban area was very weak. Theattenuation of solar radiation was due to absorption by urban aerosol. Total incoming radiation (solar+ infrared) was similar at the two sites by day and was slightly higher at the urban site during the night.
publisherAmerican Meteorological Society
titleObservations and Modeling of Downward Radiative Fluxes (Solar and Infrared) in Urban/Rural Areas
typeJournal Paper
journal volume22
journal issue1
journal titleJournal of Climate and Applied Meteorology
identifier doi10.1175/1520-0450(1983)022<0134:OAMODR>2.0.CO;2
journal fristpage134
journal lastpage142
treeJournal of Climate and Applied Meteorology:;1983:;volume( 022 ):;issue: 001
contenttypeFulltext


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