Otávio Augusto Passaia

Otávio Augusto Passaia is a Civil Engineer (UFRGS), and MSc. in Water Resources and Environmental Sanitation from the Institute of Hydraulic Research (IPH), Federal University of Rio Grande do Sul (UFRGS). He had a one year exchange period at the Institut Polytechnique de Grenoble, Génie Industriel, France. He was a Researcher at Ceará State’s Foundation for Meteorology and Water Resources (FUNCEME), Brazil; and acts as a private professor/tutor, teaching classes in different subjects. He was also a civil engineer and Lieutenant at the Brazilian Navy.

His master thesis research aimed to evaluate the impact of multiple reservoirs on water dynamics in a semiarid region in Brazil. More than twenty thousand reservoirs were simulated with the MGB, a large-scale hydrological model.

His master’s research involved the Simulation of Brazilian Reservoirs in a Continental Hydrological Model. For this, it used the hydrological model of South America, already simulated and calibrated, whose discharge are available online.

We analyzed how an ideal representation of reservoirs in terms of forced discharge would improve a previously calibrated hydrological model under the Brazilian domain. We forced the continental-scale version of the MGB hydrological model on observed reservoir outflows from 109 hydropower dams, which are part of the Brazilian National Interconnected System (SIN) controlled by the National System Operator (ONS). Model simulated flows were replaced by the reservoir outflows in all these locations and were compared to the original discharge. The forced discharge simulation presented a mean improvement for Kling-Gupta Efficiency (KGE) of 21%, when compared to the original (naturalized flow) model. This analysis was a preliminary step towards an explicit representation of the reservoirs in the model; the representation will be conducted in a future study. Forced model reservoirs’ discharges are also available online.

He has developed a software to extract and process the ICESat altimetry data, through a routine in Matlab programming language. For further information, please access ICESatProcessor

Currículo Lattes