Urban Surface Energy Balance Models: Model Characteristics and Methodology for a Comparison Study - Meteorological and Air Quality Models for Urban Areas - page 91

Table 11.3 Approach to vegetation modelling. See text for further explanation and Table 11.1 for
key to model codes

Approach Model

Canopy layer at the ground,
leaves in the atmosphere

MUKLIMO

Integrated CAT, LUMPS, ENVImet, GCTTC, MUCM, SUES, SUNBEEM

Integrated (separately
included)

VUCM

Integrated or separate tile CLMU, SM2U

None TUF2D, TUF3D, SUEB, UCLM

Separate tile BEP02, BEP05, HIRLAM-U, NSLUCM, MM5u, MOSES1T,

MOSES2T, MOUSES, TEB, TEB07, SUMM

Table 11.5 provides a summary of the features of the urban surface that are actu-
ally resolved by the models; for example, whether the canyon is a whole unit or if
walls and roofs are separate facets. Also included is whether each of these elements
has a specific orientation and whether they can be sunlit and shaded. Some models
assume an infinitely long canyon with no orientation and therefore only one wall
needs to be modelled (e.g. TEB); others have infinitely long canyons that run in
two cardinal directions each with varying sunlit and shaded wall areas through the
day (and at different times of year). To date, the intersection of such canyons has
received less attention (except in SUNBEEM) although it will be included in some
way when the site attributes are calculated and used in the model descriptions (see
Sect. 11.2.4).

Table 11.4 Categorisation of models in terms of slab, single layer, or multiple layer. See text for
further explanation and Table 11.1 for key to model codes

Slab Single layer Multiple layer

MOSES1T
MOSES2T
SUEB
SM2U

AUSSSM
CAT
CLMU
GCTTC
HIRLAM-U (+ analytical profile in canopy)
LUMPS
MOUSES
MUKLIMO (walls, roof, canopy)
NSLUCM
RUM
SLUCM
SUES
SUNBEEM
TEB
VUCM

BEP02
BEP05
ENVImet
MUCM
MUKLIMO (ground)
R-AUSSSM
SUEB
SUMM
SUNBEEM
TEB07
TUF2D, TUF3D
UCLM