TY - JOUR
T1 - Interfacing the Urban Land–Atmosphere System Through Coupled Urban Canopy and Atmospheric Models
AU - Song, Jiyun
AU - Wang, Zhihua
N1 - Publisher Copyright:
© 2014, Springer Science+Business Media Dordrecht.
PY - 2014/3
Y1 - 2014/3
N2 - We couple a single column model (SCM) to a cutting-edge single-layer urban canopy model (SLUCM) with realistic representation of urban hydrological processes. The land-surface transport of energy and moisture parametrized by the SLUCM provides lower boundary conditions to the overlying atmosphere. The coupled SLUCM–SCM model is tested against field measurements of sensible and latent heat fluxes in the surface layer, as well as vertical profiles of temperature and humidity in the mixed layer under convective conditions. The model is then used to simulate urban land–atmosphere interactions by changing urban geometry, surface albedo, vegetation fraction and aerodynamic roughness. Results show that changes of landscape characteristics have a significant impact on the growth of the boundary layer as well as on the distributions of temperature and humidity in the mixed layer. Overall, the proposed numerical framework provides a useful stand-alone modelling tool, with which the impact of urban land-surface conditions on the local hydrometeorology can be assessed via land–atmosphere interactions.
AB - We couple a single column model (SCM) to a cutting-edge single-layer urban canopy model (SLUCM) with realistic representation of urban hydrological processes. The land-surface transport of energy and moisture parametrized by the SLUCM provides lower boundary conditions to the overlying atmosphere. The coupled SLUCM–SCM model is tested against field measurements of sensible and latent heat fluxes in the surface layer, as well as vertical profiles of temperature and humidity in the mixed layer under convective conditions. The model is then used to simulate urban land–atmosphere interactions by changing urban geometry, surface albedo, vegetation fraction and aerodynamic roughness. Results show that changes of landscape characteristics have a significant impact on the growth of the boundary layer as well as on the distributions of temperature and humidity in the mixed layer. Overall, the proposed numerical framework provides a useful stand-alone modelling tool, with which the impact of urban land-surface conditions on the local hydrometeorology can be assessed via land–atmosphere interactions.
KW - Land-use land-cover changes
KW - Land–atmosphere interactions
KW - Single column atmospheric model
KW - Urban canopy model
KW - Urban planning
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U2 - 10.1007/s10546-014-9980-9
DO - 10.1007/s10546-014-9980-9
M3 - Article
AN - SCOPUS:84925490421
SN - 0006-8314
VL - 154
SP - 427
EP - 448
JO - Boundary-Layer Meteorology
JF - Boundary-Layer Meteorology
IS - 3
ER -