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| Titel |
Sensitivity of the hydrological response in a Mediterranean catchment to different climate |
| VerfasserIn |
Monica Piras, Giuseppe Mascaro, Roberto Deidda, Enrique Vivoni |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250054409
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| Zusammenfassung |
| The Climate Induced Changes on the Hydrology of Mediterranean Basins (CLIMB) Project
is a multi-institutional research project, funded by 7th EU Framework Programme, which has
the main goal of reducing uncertainties in the quantification of climate change impact in
Mediterranean basins. Current studies including IPCC indicate, in fact, that the water budget
in these areas will be very likely affected by climate change, with severe impacts on
agricultural productivity and drinking water supply. One of the CLIMB study sites is the Rio
Mannu at Monastir, a 470 Km2 catchment located in an agricultural area in southern Sardinia
(Italy) with gently rolling topography. In this study, we show preliminary results on the
sensitivity of hydrological response in this basin under climatic changes conditions. For this
aim, outputs of several climate models are used to force the TIN-based Real-time
Integrated Basin Simulator (tRIBS), a fully distributed, physically based model able to
continuously simulate hydrological processes occurring in a basin, by explicitly taking into
account variability of meteorological forcing and basin properties. We first present
results of the calibration effort, based on a relatively limited dataset consisting
of: (i) hydrometeorological data available over 26 years in the period 1925-1964
and including daily rain gage observations, daily streamflow data at the outlet and
temperature observations from four stations, (ii) a 10-m Digital Elevation Model, (iii) a
digitized soil texture map, (iv) the CORINE land cover map. Once calibrated, we
use tRIBS to simulate the hydrological response in the Rio Mannu basin, under a
number of climate change scenarios, generated by several numerical climate models
collected by the PRUDENCE project of the FP5, the ENSEMBLES project of the FP6
and the US project PCMDI/CMIP3. Finally, we present and discuss preliminary
comparisons and analysis of the hydrological impacts of the different climatic scenarios. |
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