Uncertainty in hydrologic modeling: Toward an integrated data assimilation framework

Y Liu, HV Gupta - Water resources research, 2007 - Wiley Online Library
Despite significant recent developments in computational power and distributed hydrologic
modeling, the issue of how to adequately address the uncertainty associated with …

Advancing data assimilation in operational hydrologic forecasting: progresses, challenges, and emerging opportunities

Y Liu, AH Weerts, M Clark… - Hydrology and earth …, 2012 - hess.copernicus.org
Data assimilation (DA) holds considerable potential for improving hydrologic predictions as
demonstrated in numerous research studies. However, advances in hydrologic DA research …

Artificial neural network modeling of the rainfall‐runoff process

K Hsu, HV Gupta, S Sorooshian - Water resources research, 1995 - Wiley Online Library
An artificial neural network (ANN) is a flexible mathematical structure which is capable of
identifying complex nonlinear relationships between input and output data sets. ANN …

Toward improved calibration of hydrologic models: Multiple and noncommensurable measures of information

HV Gupta, S Sorooshian… - Water Resources Research, 1998 - Wiley Online Library
Several contributions to the hydrological literature have brought into question the continued
usefulness of the classical paradigm for hydrologic model calibration. With the growing …

Multi-objective global optimization for hydrologic models

PO Yapo, HV Gupta, S Sorooshian - Journal of hydrology, 1998 - Elsevier
The development of automated (computer-based) calibration methods has focused mainly
on the selection of a single-objective measure of the distance between the model-simulated …

Dual state–parameter estimation of hydrological models using ensemble Kalman filter

H Moradkhani, S Sorooshian, HV Gupta… - Advances in water …, 2005 - Elsevier
Hydrologic models are twofold: models for understanding physical processes and models
for prediction. This study addresses the latter, which modelers use to predict, for example …

Uncertainty assessment of hydrologic model states and parameters: Sequential data assimilation using the particle filter

H Moradkhani, KL Hsu, H Gupta… - Water resources …, 2005 - Wiley Online Library
Two elementary issues in contemporary Earth system science and engineering are (1) the
specification of model parameter values which characterize a system and (2) the estimation …

Calibration of rainfall‐runoff models: Application of global optimization to the Sacramento Soil Moisture Accounting Model

S Sorooshian, Q Duan, VK Gupta - Water resources research, 1993 - Wiley Online Library
Conceptual rainfall‐runoff models are difficult to calibrate by means of automatic methods;
one major reason for this is the inability of conventional procedures to locate the globally …

An integrated hydrologic Bayesian multimodel combination framework: Confronting input, parameter, and model structural uncertainty in hydrologic prediction

NK Ajami, Q Duan, S Sorooshian - Water resources research, 2007 - Wiley Online Library
The conventional treatment of uncertainty in rainfall‐runoff modeling primarily attributes
uncertainty in the input‐output representation of the model to uncertainty in the model …

Hydrological data assimilation with the ensemble Kalman filter: Use of streamflow observations to update states in a distributed hydrological model

MP Clark, DE Rupp, RA Woods, X Zheng… - Advances in water …, 2008 - Elsevier
This paper describes an application of the ensemble Kalman filter (EnKF) in which
streamflow observations are used to update states in a distributed hydrological model. We …