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Open AccessArticle

Exploring an Alternative Configuration of the Hydroclimatic Modeling Chain, Based on the Notion of Asynchronous Objective Functions

1
Department of Civil and Water Engineering, Laval University, Québec, QC G1V 0A6, Canada
2
Direction de la recherche forestière, Ministère des Forêts, de la Faune et des Parcs, Québec, QC G1P 3W8, Canada
*
Author to whom correspondence should be addressed.
Water 2019, 11(10), 2012; https://doi.org/10.3390/w11102012
Received: 8 August 2019 / Revised: 17 September 2019 / Accepted: 25 September 2019 / Published: 27 September 2019
(This article belongs to the Special Issue Hydroclimatic Variability at Local, Regional, and Global Scales)
This study explores an alternative configuration of the hydroclimatic modeling chain around the notion of asynchronous objective-function (AOF). AOFs are calibration criteria purposely ignoring the correlation between observed and simulated variables. Within the suggested alternative configuration, the hydrologic model is being forced and calibrated with bias corrected climate variables over the reference period instead of historical meteorological observations. Consequently, the alternative configuration circumvent the redundant usage of climate observation operated within conventional configurations for statistical post-processing of simulated climate variables and calibration of the hydrologic model. AOFs optimize statistical properties of hydroclimatic projections, preserving the sequence of events imbedded within the forcing climate model. Both conventional and alternative configurations of the hydroclimatic modeling chain are implemented over a mid-size nivo-pluvial catchment located in the Saint-Lawrence Valley, Canada. The WaSiM-ETH hydrological model is forced with a bias-corrected member of the Canadian Regional Climate Model Large Ensemble (CRCM5-LE). Five AOFs are designed and compared to the common Kling-Gupta efficiency (KGE) metric. Forced with observations, AOFs tend to provide a hydrologic response comparable to KGE during the nival season and moderately degraded during the pluvial season. Using AOFs, the alternative configuration of the hydroclimatic modeling chain provides more coherent hydrologic projections relative to a conventional configuration. View Full-Text
Keywords: hydroclimatology; modeling chain; objective functions; catchment scale hydroclimatology; modeling chain; objective functions; catchment scale
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MDPI and ACS Style

Ricard, S.; Sylvain, J.-D.; Anctil, F. Exploring an Alternative Configuration of the Hydroclimatic Modeling Chain, Based on the Notion of Asynchronous Objective Functions. Water 2019, 11, 2012. https://doi.org/10.3390/w11102012

AMA Style

Ricard S, Sylvain J-D, Anctil F. Exploring an Alternative Configuration of the Hydroclimatic Modeling Chain, Based on the Notion of Asynchronous Objective Functions. Water. 2019; 11(10):2012. https://doi.org/10.3390/w11102012

Chicago/Turabian Style

Ricard, Simon; Sylvain, Jean-Daniel; Anctil, François. 2019. "Exploring an Alternative Configuration of the Hydroclimatic Modeling Chain, Based on the Notion of Asynchronous Objective Functions" Water 11, no. 10: 2012. https://doi.org/10.3390/w11102012

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