Geoscience Reference
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Cerro del Chiquihuite
Cerro de la Catedral
Cerro de La Estrella
UNAM
Fig. 13. a) Proposed sites in Mexico Basin for the new radar deployment. Black line is the
political boundary of Mexico City: b) View of the Valley of Mexico basin from the Cerro de
la Estrella .
Fig. 14. Radar scan at 0 deg.: Left, The Cerro de La Estrella (2450 msl) and; right the Cerro
Catedral site (3785 msl). Red line is the political boundary of Mexico City.
The Mexico Basin rain gauge network (Méndez et al. 2009) is very dense (Fig. 4) and the new
Mexico Valley radar system should take advantage of this to implement quantitative
precipitation estimation schemes as one of main products generated by the early warning
system. To achieve this, a proper processing of radar data must implemented in order to
develop methodology to prevent beam blockage due to orography (Bech et al. 2003), ground
clutter (Fornasiero et al., 2006), which can produce frequent false alarms and affect the
precipitation estimative. These effects can be mitigated through the application of the
decision-tree method proposed by Lee et al. (1995) for a dual-polarized system, which able
to provide additional parameters such as differential reflectivity, correlation coefficient (and
their texture) that can be used to further reinforce the traditional techniques.
All products generated by the early warning system (graphic, data image, text, bulletin) will
be integrated into a display system based in GIS system. This will permit produce better
quality graphic resolution and generate tailor made products for specific needs to stake
holders and general public.
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