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Discussion papers
https://doi.org/10.5194/hess-2018-603
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-2018-603
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: research article 21 Dec 2018

Submitted as: research article | 21 Dec 2018

Review status
This discussion paper is a preprint. A revision of this manuscript was accepted for the journal Hydrology and Earth System Sciences (HESS) and is expected to appear here in due course.

Evaluation of drought representation and propagation in Regional Climate Model simulations over Spain

Anaïs Barella-Ortiz and Pere Quintana-Seguí Anaïs Barella-Ortiz and Pere Quintana-Seguí
  • Observatori de l'Ebre (Universitat Ramon Llull – CSIC), Roquetes (Spain)

Abstract. Drought is an important climatic risk, of complex modeling due to the interaction of different processes and their corresponding temporal scales. It is expected to increase in intensity, frequency and duration due to a warmer climate. Therefore, it is vital to know the evolution of drought in relation to climate change. For this, the better understanding of processes involved in it is key. The study here presented, analyses drought representation and propagation by regional climate models from Med-CORDEX simulations by means of standardized indices. The models used are RCSM4, CCLM4, and PROMES. Focus is made on three types of drought: meteorological, soil moisture and hydrological. Results show that these models improve meteorological drought representation, but large uncertainties are identified in its propagation and the way soil moisture and hydrological droughts are characterised. These are mainly due to the relevance of model formulation. For instance, it affects the temporal scale at which precipitation variability propagates to soil moisture and streamflow. In addition, downscaling is also seen to affect streamflow variability, and thus hydrological drought.

Anaïs Barella-Ortiz and Pere Quintana-Seguí
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Interactive discussion
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
Anaïs Barella-Ortiz and Pere Quintana-Seguí
Anaïs Barella-Ortiz and Pere Quintana-Seguí
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Short summary
Drought is an important climatic risk. Its representation and propagation by regional climate models from Med-CORDEX simulations is analysed using standardized indices. Results show that these models improve meteorological drought representation, but large uncertainties are identified in its propagation and the way soil moisture and hydrological droughts are characterised. These are mainly due to model formulation, making necessary further improvements in land surface modelling.
Drought is an important climatic risk. Its representation and propagation by regional climate...
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