A Simple Time-Varying Sensitivity Analysis (TVSA) for Assessment of Temporal Variability of Hydrological Processes

A Simple Time-Varying Sensitivity Analysis (TVSA) for Assessment of Temporal Variability of Hydrological Processes

Time-varying sensitivity analysis (TVSA) allows sensitivity in a moving window to be estimated and the time periods in which the specific components of a model can affect its performance to be identified. However, one of the disadvantages of TVSA is its high computational cost, as it estimates sensi...

Full description

Bibliographic Details
Main Authors: Yelena Medina, Enrique Muñoz
Format: Article
Language:English
Published: MDPI AG 2020-09-01
Series:Water
Subjects:
hydrological processes variability
sensitivity analysis
environmental hydrological modeling
Online Access:https://www.mdpi.com/2073-4441/12/9/2463
id doaj-0a76afe21d694cf5a3d7c29dfa106fce
record_format Article
spelling doaj-0a76afe21d694cf5a3d7c29dfa106fce2020-11-25T03:43:14ZengMDPI AGWater2073-44412020-09-01122463246310.3390/w12092463A Simple Time-Varying Sensitivity Analysis (TVSA) for Assessment of Temporal Variability of Hydrological ProcessesYelena Medina0Enrique Muñoz1Department of Civil Engineering, Universidad Católica de la Santísima Concepción, Concepción 4090541, ChileDepartment of Civil Engineering, Universidad Católica de la Santísima Concepción, Concepción 4090541, ChileTime-varying sensitivity analysis (TVSA) allows sensitivity in a moving window to be estimated and the time periods in which the specific components of a model can affect its performance to be identified. However, one of the disadvantages of TVSA is its high computational cost, as it estimates sensitivity in a moving window within an analyzed series, performing a series of repetitive calculations. In this article a function to implement a simple TVSA with a low computational cost using regional sensitivity analysis is presented. As an example of its application, an analysis of hydrological model results in daily, monthly, and annual time windows is carried out. The results show that the model allows the time sensitivity of a model with respect to its parameters to be detected, making it a suitable tool for the assessment of temporal variability of processes in models that include time series analysis. In addition, it is observed that the size of the moving window can influence the estimated sensitivity; therefore, analysis of different time windows is recommended.https://www.mdpi.com/2073-4441/12/9/2463hydrological processes variabilitysensitivity analysisenvironmental hydrological modeling
collection DOAJ
language English
format Article
sources DOAJ
author Yelena Medina
Enrique Muñoz
spellingShingle Yelena Medina
Enrique Muñoz
A Simple Time-Varying Sensitivity Analysis (TVSA) for Assessment of Temporal Variability of Hydrological Processes
Water
hydrological processes variability
sensitivity analysis
environmental hydrological modeling
author_facet Yelena Medina
Enrique Muñoz
author_sort Yelena Medina
title A Simple Time-Varying Sensitivity Analysis (TVSA) for Assessment of Temporal Variability of Hydrological Processes
title_short A Simple Time-Varying Sensitivity Analysis (TVSA) for Assessment of Temporal Variability of Hydrological Processes
title_full A Simple Time-Varying Sensitivity Analysis (TVSA) for Assessment of Temporal Variability of Hydrological Processes
title_fullStr A Simple Time-Varying Sensitivity Analysis (TVSA) for Assessment of Temporal Variability of Hydrological Processes
title_full_unstemmed A Simple Time-Varying Sensitivity Analysis (TVSA) for Assessment of Temporal Variability of Hydrological Processes
title_sort simple time-varying sensitivity analysis (tvsa) for assessment of temporal variability of hydrological processes
publisher MDPI AG
series Water
issn 2073-4441
publishDate 2020-09-01
description Time-varying sensitivity analysis (TVSA) allows sensitivity in a moving window to be estimated and the time periods in which the specific components of a model can affect its performance to be identified. However, one of the disadvantages of TVSA is its high computational cost, as it estimates sensitivity in a moving window within an analyzed series, performing a series of repetitive calculations. In this article a function to implement a simple TVSA with a low computational cost using regional sensitivity analysis is presented. As an example of its application, an analysis of hydrological model results in daily, monthly, and annual time windows is carried out. The results show that the model allows the time sensitivity of a model with respect to its parameters to be detected, making it a suitable tool for the assessment of temporal variability of processes in models that include time series analysis. In addition, it is observed that the size of the moving window can influence the estimated sensitivity; therefore, analysis of different time windows is recommended.
topic hydrological processes variability
sensitivity analysis
environmental hydrological modeling
url https://www.mdpi.com/2073-4441/12/9/2463
work_keys_str_mv AT yelenamedina asimpletimevaryingsensitivityanalysistvsaforassessmentoftemporalvariabilityofhydrologicalprocesses
AT enriquemunoz asimpletimevaryingsensitivityanalysistvsaforassessmentoftemporalvariabilityofhydrologicalprocesses
AT yelenamedina simpletimevaryingsensitivityanalysistvsaforassessmentoftemporalvariabilityofhydrologicalprocesses
AT enriquemunoz simpletimevaryingsensitivityanalysistvsaforassessmentoftemporalvariabilityofhydrologicalprocesses
_version_ 1724521193006956544

Similar Items