To the top

Page Manager: Webmaster
Last update: 9/11/2012 3:13 PM

Tell a friend about this page
Print version

Influence of ground surfa… - University of Gothenburg, Sweden Till startsida
Sitemap
To content Read more about how we use cookies on gu.se

Influence of ground surface characteristics on the mean radiant temperature in urban areas

Journal article
Authors Fredrik Lindberg
Shiho Onomura
C. S. B. Grimmond
Published in International Journal of Biometeorology
Volume 60
Issue 9
Pages 1439-1452
ISSN 0020-7128
Publication year 2016
Published at Department of Earth Sciences
Pages 1439-1452
Language en
Links dx.doi.org/10.1007/s00484-016-1135-...
Keywords SOLWEIG, Surface temperature, Gothenburg, London, outdoor thermal comfort, solar-radiation, street canyon, energy, environments, fluxes, parameterization, freiburg, germany, summer
Subject categories Earth and Related Environmental Sciences

Abstract

The effect of variations in land cover on mean radiant temperature (T-mrt) is explored through a simple scheme developed within the radiation model SOLWEIG. Outgoing longwave radiation is parameterised using surface temperature observations on a grass and an asphalt surface, whereas outgoing shortwave radiation is modelled through variations in albedo for the different surfaces. The influence of ground surface materials on T-mrt is small compared to the effects of shadowing. Nevertheless, altering ground surface materials could contribute to a reduction in T-mrt to reduce the radiant load during heat-wave episodes in locations where shadowing is not an option. Evaluation of the new scheme suggests that despite its simplicity it can simulate the outgoing fluxes well, especially during sunny conditions. However, it underestimates at night and in shadowed locations. One grass surface used to develop the parameterisation, with very different characteristics compared to an evaluation grass site, caused T-mrt to be underestimated. The implications of using high temporal resolution (e.g. 15 minutes) meteorological forcing data under partly cloudy conditions are demonstrated even for fairly proximal sites.

Page Manager: Webmaster|Last update: 9/11/2012
Share:

The University of Gothenburg uses cookies to provide you with the best possible user experience. By continuing on this website, you approve of our use of cookies.  What are cookies?