Energy flux parametrization as an opportunity to get Urban Heat Island insights: The case of Athens, Greece (Thermopolis 2009 Campaign)

TY - JOUR

T1 - Energy flux parametrization as an opportunity to get Urban Heat Island insights

T2 - The case of Athens, Greece (Thermopolis 2009 Campaign)

AU - Loupa, G.

AU - Rapsomanikis, S.

AU - Trepekli, A.

AU - Kourtidis, K.

PY - 2016

Y1 - 2016

N2 - Energy flux parameterization was effected for the city of Athens, Greece, by utilizing two approaches, the Local- Scale UrbanMeteorological Parameterization Scheme(LUMPS) and the Bulk Approach (BA). In situ acquired data are used to validate the algorithms of these schemes and derive coefficients applicable to the study area. Model results from these corrected algorithms are compared with literature results for coefficients applicable to other cities and their varying construction materials. Asphalt and concrete surfaces, canyons and anthropogenic heat releases were found to be the key characteristics of the city center that sustain the elevated surface and air temperatures, under hot, sunny and dryweather, during theMediterranean summer. A relationship between storage heat flux plus anthropogenic energy flux and temperatures (surface and lower atmosphere) is presented, that results in understanding of the interplay between temperatures, anthropogenic energy releases and the city characteristics under the Urban Heat Island conditions.

AB - Energy flux parameterization was effected for the city of Athens, Greece, by utilizing two approaches, the Local- Scale UrbanMeteorological Parameterization Scheme(LUMPS) and the Bulk Approach (BA). In situ acquired data are used to validate the algorithms of these schemes and derive coefficients applicable to the study area. Model results from these corrected algorithms are compared with literature results for coefficients applicable to other cities and their varying construction materials. Asphalt and concrete surfaces, canyons and anthropogenic heat releases were found to be the key characteristics of the city center that sustain the elevated surface and air temperatures, under hot, sunny and dryweather, during theMediterranean summer. A relationship between storage heat flux plus anthropogenic energy flux and temperatures (surface and lower atmosphere) is presented, that results in understanding of the interplay between temperatures, anthropogenic energy releases and the city characteristics under the Urban Heat Island conditions.

KW - Aerodynamic resistance for heat

KW - Anthropogenic releases

KW - Heat waves

KW - KB

KW - Objective hysteresis model

KW - Storage heat flux density

U2 - 10.1016/j.scitotenv.2015.10.056

DO - 10.1016/j.scitotenv.2015.10.056

M3 - Journal article

AN - SCOPUS:84946223045

SN - 0048-9697

VL - 542

SP - 136

EP - 143

JO - Science of the Total Environment

JF - Science of the Total Environment

ER -