IFOP’s Chonos page launches new application
21 December, 2020

IFOP’s Chonos page launches new application

December 25th, 2020 Periodista Gabriela.Gutiérrez

Chonos (chonos.ifop.cl), IFOP Fishing Development Institute web portal, since 2018, houses Chilean Patagonia oceanographic information system, continues to grow with FLOW publication (chonos.ifop.cl/aguadulce/visor) new application based on numerical modeling that adds to the already existing MOSA (oceanographic forecast), partiMOSA (particle dispersion model), ATLAS (marine environment environmental information library) and CLIC (matrices connectivity).

FLOW is jointly developed by IFOP and Meteodata (www.meteodata.cl) allows the user to view, through an interactive map, rivers and glaciers average daily flow rates in Los lagos, Aysén and General Carlos Ibáñez del Campo, Magallanes and Chilean Antarctica regions; obtained from VIC hydrological model (“Variable Infiltration Capacity Model”).

VIC (Liang et al., 1994) is a hydrological model that solves energy and water balance equations to calculate flows (surface runoff + subsurface base flow) from the input of meteorological data from the CR2MET model of 5 km resolution on a hydrographic network generated by TauDEM software and the SRTM topographic elevation database of 30 meters resolution. The spatial resolution of VIC is 5 kilometers, which yields a total of 31120 hydrographic basins that discharge fresh water to the marine system of Chilean Patagonia.

FLOW presents these flows in daily averages in time series that currently go from 1980 to 2018, allowing, thanks to its scalability, to update the results of the model. VIC is calibrated and evaluated in its performance with 62 fluviometric stations of the General Water Directorate.

In Putemún IFOP researcher Pablo Reche words, “FLOW expands knowledge of freshwater flow discharges in Chilean Patagonia marine system, which due to the enormous extension and operational remote accessibility is not possible at the moment through direct measurements. In this way, FLOW serves to feed the other Chonos numerical models and thus solve the processes that generate low-density flows at the head of estuaries and fjords. “

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