Ricardo Mantilla

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We present evidence that the El Niño phenomenon intensifies the annual cycle of malaria cases for Plasmodium vivax and Plasmodium falciparum in endemic areas of Colombia as a consequence of concomitant anomalies in the normal annual cycle of temperature and precipitation. We used simultaneous analyses of both variables at both timescales, as well as(More)
This discussion paper is/has been under review for the journal Geoscientific Model Development (GMD). Please refer to the corresponding final paper in GMD if available. Abstract This paper presents a discussion of the predictive capacity of the first implementation of the semi-distributed hydrological modeling system JGrass-NewAge. This model fo-cuses on(More)
An analysis of hydrologic variability in Colombia shows different seasonal effects associated with El Niño/Southern Oscillation (ENSO) phenomenon. Spectral and cross-correlation analyses are developed between climatic indices of the tropical Pacific Ocean and the annual cycle of Colombia's hydrology: precipitation, river flows, soil moisture, and the(More)
presents the design for the integrated hydrologic observations database that is proposed for the CUAHSI Hydrologic Information System (HIS). An independent review of this design was undertaken to evaluate whether the data model for hydrologic observations meets the needs of the CUAHSI community. Specifically the review sought to address whether the model is(More)
The mission of the Institute for Transportation (InTrans) at Iowa State University is to develop and implement innovative methods, materials, and technologies for improving transportation efficiency, safety, reliability, and sustainability while improving the learning environment of students, faculty, and staff in transportation-related fields. Federal and(More)
This document presents a sketch of the engineering and legal considerations necessary to implement a distributed storage flood mitigation system in Iowa. This document first presents the results of a simulation done to assess the advantages of active storage reservoirs over passive reservoirs for flood mitigation. Next, this paper considers how forecasts(More)
The discovery of the Horton laws for hydrologic variables has greatly lagged behind geomorphology, which began with Robert Horton in 1945. We define the classical and the generalized Horton laws for peak flows in rainfall-runoff events, which link self-similarity in network geomorphology with river basin hydrology. Both the Horton laws are tested in the(More)
ii Para Mark y Emma-mis grandes amores iii ACKOWLEDGMETS I would like to thank Dr. Larry Weber for inspiring me to go back to school and for all his guidance during these two years. I also want to thank Dr. Ricardo Mantilla for all his time and for sharing with me his passion for hydrological modeling. I specially want to thank Luciana Cunha, for providing(More)