Geography Reference
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Fig. 1 (a) The classical data flow for expert analysing pollution propagation. (b) A new data flow
that allows to map the results in 2D on the web
today somehow a more realistic solution according to the difficulty we have to
obtain authorization to set sensors in a city. An important point is that these models,
using fluid dynamic, require a representation of the space in 3D (see Fig. 1a, b ).
Many models have been developed by experts to compute specific phenomena
from a set of measures. In France for example the model Saturne (see http://cerea.
enpc.fr ) , allows to study either the effect of a phenomenon on the environment
(such as the pollution on a district) or the effect of the environment on a phenom-
enon (such as the impact of buildings on the local rising of temperature). Saturne
software is based on fluid dynamic (CFD) model, developed by EDF, and contains
an atmospheric module, developed by the CEREA laboratory, which allows the
computation of different pollution propagation (Winiarek et al. 2013 ). This module
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