Journal
IZVESTIYA ATMOSPHERIC AND OCEANIC PHYSICS
Volume 54, Issue 4, Pages 313-321Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0001433818040217
Keywords
atmospheric boundary layer; advection; urban heat island; energy consumption of municipal services; positive and negative feedbacks
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Funding
- Russian Scientific Fund [16-17-00114]
- Russian Science Foundation [16-17-00114] Funding Source: Russian Science Foundation
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Both horizontal and vertical heat exchanges and feedbacks between air temperature and anthropogenic heat fluxes significantly affect the characteristics of the urban heat island (UHI). The UHI intensity depends, in particular, on the ratio between the scales L-A (area of anthropogenic forcing) and L-gamma (distance passed by an air particle of the oncoming stably stratified flow before its temperature approaches air temperature within the UHI). Both advection and feedback effects may be estimated based on the equation for the local heat balance of the underlying surface. In this case, heat advection is taken into account by calculating temperatures individually for the atmospheric boundary layer and the surface of the urban canopy layer. The estimates show that the asymptotics of strong advection is more characteristic of a typical city. However, under weak winds, with consideration for the feedback between air temperature and anthropogenic heat flux, some deviations from this asymptotics are probable.
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