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whether these changes modify the results. For this latter period a simulation was
achieved over Szeged as well to investigate the effect of urbanization in another
location.
The results were validated against observations of HMS stations. In both cities
two stations were selected: one in the centre and one in the outer part of the town.
In case of Budapest the inner station is situated in Kitaibel Street, close to the Buda
Hills, the other one operates in Pestszentlőrinc, in the outskirts (Fig. 1.4). However,
ECOCLIMAP considers both points as temperate suburban (it is composed of 60 %
town and 40 % nature). Szeged is located in the Southern Great Plain region, where
higher elevated orographic objects (hills or mountains) cannot be found in the vicinity of the town. The surroundings of its inner observational site are also categorized
as temperate suburban in ECOCLIMAP, while the outer point is actually a rural
point without buildings. This paper summarizes the performance of the SURFEX
model for these three experiments. Climate change assessment is not the aim of this
study, since 10-year periods are insufficient for such investigations.
Fig. 1.4 Flow chart about the use of SURFEX with topography [m] and the gridpoints that include
urban surface (right panels; red); white dots indicate the observational stations in the right panels
J. Fallmann et al.
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