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Geir Evensen

Geir Evensen

Forsker I

+47 51 87 56 15
+47 930 90 947
Nygårdsgaten 112, 5008 Bergen, Norway

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An ensemble-based decision workflow for reservoir management – Journal of Petroleum Science and Engineering 2022
Data Assimilation Fundamentals: A Unified Formulation of the State and Parameter Estimation Problem – Springer 2022
Subspace Ensemble Randomized Maximum Likelihood with Local Analysis for Time-Lapse-Seismic-Data Assimilation – SPE Journal 2021
A study of disproportionately affected populations by race/ethnicity during the SARS-CoV-2 pandemic using multi-population SEIR modeling and ensemble data assimilation – Foundations of Data Science (FoDS) 2021
p-Kernel Stein Variational Gradient Descent for Data Assimilation and History Matching – Mathematical Geosciences 2021
Formulating the history matching problem with consistent error statistics – Computational Geosciences 2021
Handling Big Models and Big Data Sets in History-Matching Problems through an Adaptive Local Analysis Scheme – SPE Journal 2020
An international initiative of predicting the SARS-CoV-2 pandemic using ensemble data assimilation – Foundations of Data Science (FoDS) 2020
4D seismic history matching: Assessing the use of a dictionary learning based sparse representation method – Journal of Petroleum Science and Engineering 2020
Efficient Implementation of an Iterative Ensemble Smoother for Data Assimilation and Reservoir History Matching – Frontiers in Applied Mathematics and Statistics 2019
Revising the stochastic iterative ensemble smoother – Nonlinear processes in geophysics 2019
Sparse Representation of 4D Seismic Signal Based on Dictionary Learning – 2019
Accounting for model errors in iterative ensemble smoothers – Computational Geosciences 2019
Introducing Stochastic Model Errors In Ensemble-Based History Matching – 2018
Correlation-Based Adaptive Localization for Ensemble-Based History Matching: Applied To the Norne Field Case Study – SPE Reservoir Evaluation and Engineering 2018
Data assimilation in the geosciences: An overview of methods, issues, and perspectives – Wiley Interdisciplinary Reviews: Climate Change (WIRESs) 2018
History Matching Using an Iterative Ensemble Smoother with Correlation-Based Adaptive Localization - A Real Field Case Study – 2018
Conditioning reservoir models on rate data using ensemble smoothers – Computational Geosciences 2018
Correlation-Based Adaptive Localization for Ensemble-Based History Matching: Applied to the Norne Field Case Study – 2018
Analysis of iterative ensemble smoothers for solving inverse problems – Computational Geosciences 2018
Forecasting non-linear systems with the Ensemble Kalman Filter and related data assimilation methods (eVITA-EnKF) – Nansen Senter for Miljø og Fjernmåling 2011
Asynchronous data assimilation with the EnKF – Tellus A: Dynamic Meteorology and Oceanography 2010
Structural Surface Uncertainty Modeling and Updating Using the Ensemble Kalman Filter – SPE Journal 2010
The Ensemble Kalman Filter for Combined State and Parameter Estimation MONTE CARLO TECHNIQUES FOR DATA ASSIMILATION IN LARGE SYSTEMS – Control Systems Magazine 2009
Forecasting non-linear systems with the Ensemble Kalman Filter and related data assimilation methods (eVITA-EnKF) – Nansen Environmental and Remote Sensing Center (NERSC) 2009
History Matching Using the Ensemble Kalman Filter on a North Sea Field Case – SPE Journal 2008
Incorporating 4D seismic data in reservoir simulation models using ensemble Kalman filter – SPE Journal 2007
Coastal Physical and Biochemical Processes – 2006
The impact of ensemble filter definition on the assimilation of temperature profiles in the tropical Pacific – Quarterly Journal of the Royal Meteorological Society 2005
Monitoring the Norwegian Coastal Zone Environment (MONCOZE) – 2003
Developing a Marine Information System by Integrating Existing Ocean Models Using Object-Oriented Technology – Marine Geodesy 2003
Indian Ocean: Validation of the Miami Isopycnic Coordinate Ocean Model and ENSO events during 1958-1998 – Journal of Geophysical Research (JGR) 2002
Mesoscale modelling study of the oceanographic conditions off the southwest coast of India – Indian Academy of Science(Earth and Planetary Science) 2002
A singular evolutive extended Kalman filter to assimilate ocean colour data in a coupled physical-biogeochemical model for the North Atlantic – Ocean Modelling 2001
Satellite earth observation in operational oceanography – Coastal Engineering 2000
Coordinate Transformation on a Sphere Using Conformal Mapping – Monthly Weather Review 1999
A review of the possible applications of earth observations data within EuroGOOS. Review book proceedings from "The First International Conference on EuroGOOS" – Elsevier Sciences Ltd 1997
Monitoring and modeling of the marine coastal environment – Photogrammetric Engineering and Remote Sensing 1993
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