Using the EnKF for history matching and uncertainty quantification of complex reservoir models
A. Seiler, G. Evensen, J.-A. Skjervheim, J. Hove, and J. G. Vabø
in Computational Methods for Large Scale Inverse Problems and Quantification of Uncertainty,
Edited by L. Biegler, G. Biros, O. Ghattas, M. Heinkenschloss, D. Keyes, B. Mallick, L. Tenorio, B. van Bloemen Waanders, K Willcox
John Wiley & Sons, Ltd. 2010
Asynchronous data assimilation with the EnKF
P. Sakov, G. Evensen and L. Bertino
Tellus Ser A., 2010
The ensemble Kalman filter for combined state and parameter estimation
G. Evensen
IEEE Control Systems Magazine, 29 (3), pp 83-104, 2009.
IEEE holds the copyright of this article and the original version is available on IEEE CSM,
Structural Uncertainty modelling and updating by production data integration
A. Seiler, J. C. Rivenes, S.I. Aanonsen, and G. Evensen
SPE 125352, 2009.
SPE holds the copyright of this article and the original version is available on http://www.spe.org,
Advanced reservoir management workflow using an EnKF based assisted history matching method
A. Seiler, G. Evensen, J.-A. Skjervheim, J. Hove, and J.G. Vabø
SPE 118906, 2009.
SPE holds the copyright of this article and the original version is available on http://www.spe.org,
Assimilating synthetic CryoSat sea ice thickness in a coupled ice-ocean model
Link to original paper

K.A. Lisaeter, G. Evensen and S. Laxon
J. Geophys. Res., 112, C07023, 14, 2007
Using the EnKF for assisted history matching of a North Sea Reservoir Model
G. Evensen, J. Hove, H.C. Meisingset, E. Reiso, K.S. Seim and Ø. Espelid
SPE 106184, 2007.
SPE holds the copyright of this article and the original version is available on http://www.spe.org,
Efficiency of high order numerical schemes for momentum advection
Link to original paper

N. G. Winther and and Yves Morel and G. Evensen
J. Marine Sys., 67, 31-46, (2007)
A hybrid coordinate ocean model for shelf sea simulation
N. G. Winther and G. Evensen
Ocean modelling, 13, 221-237, (2006)
History matching using the ensemble Kalman filter on a North Sea field case,
Vibeke Haugen and Lars-Jørgen Natvik and G. Evensen and Aina Berg and Kristin Flornes and Geir Nævdal,
SPE 102430, 2006
SPE holds the copyright of this article and the original version is available on http://www.spe.org,
Incorporating 4D seismic data in reservoir simulation models using ensemble Kalman filter
J-A. Skjervheim, G. Evensen, S.I. Aanonsen, B.O. Ruud and T.A. Johansen
SPE 95789, 2005.
SPE holds the copyright of this article and the original version is available on http://www.spe.org,
The impact of ensemble filter definition on the assimilation of temperature profiles in the Tropical Pacific,
O. Leeuwenburgh, G. Evensen and L. Bertino,
Q. J. R. Meteorol. Soc., 131, 3291-3300, 2005
Sampling strategies and square root analysis schemes for the EnKF with Correction
Geir Evensen,
Ocean Dynamics, 54, 539-560, 2004.
Springer holds the copyright of this article and the original version is available on http://link.springer.de,
Sequential data assimilation techniques in oceanography,
Laurent Bertino and Geir Evensen and Hans Wackernagel,
International Statistical Review, 71, 223-241, 2003
Assimilation of ice concentration in a coupled ice-ocean model, using the Ensemble Kalman Filter 
Knut Arild Lisaeter, Julia Rosanova, Geir Evensen,
Ocean Dynamics, 53, 368-388, 2003.
Springer holds the copyright of this article and the original version is available on http://link.springer.de,

The Ensemble Kalman Filter: Theoretical Formulation and Practical Implementation
Geir Evensen,
Ocean Dynamics, 53, 343-367, 2003.
Springer holds the copyright of this article and the original version is available on http://link.springer.de

A demonstration of ensemble based assimilation methods with a layered OGCM from the perspective of operational ocean forecasting systems ,
K. Brusdal, J.M. Brankart, G. Halberstadt, G. Evensen, P. Brasseur, P. J. van Leeuwen, E. Dombrowsky and J. Verron,
JMS, 40-41, 253-289, 2003

Assimilation of ocean colour data into a biochemical model of the North Atlantic. Part 1. Data assimilation experiments,
Lars-Jorgen Natvik and Geir Evensen,
JMS, 40-41, 127-153, 2003

Assimilation of ocean colour data into a biochemical model of the North Atlantic. Part 2. Statistical analysis,
Lars-Jorgen Natvik and Geir Evensen,
JMS, 40-41, 155-169, 2003

Developing a marine information system by integrating exising ocean models using object oriented technology,
A. Jacob, T. Hamre, G. Evensen and K.A. Mughal,
Marine Geodesy, 26, 87-106, 2003

An Ensemble Kalman Filter with a complex marine ecosystem model: Hindcasting phytoplankton in the Cretan Sea,
J.I. Allen, M. Eknes and G. Evensen,
Annales Geophys, 20, 1-13, 2002

Mesoscale modeling study of the oceanographic conditions off the south west coast of India,
Vibeke E. J. Haugen, Ola M. Johannessen and Geir Evensen,
Proceedings of Indian Academy of Sciences (Earth and Planetary Sciences), Vol. 111, 321-338, 2002

Assimilation of SST and SLA data into an OGCM for the Indian Ocean,
Vibeke E. J. Haugen and Geir Evensen,
Ocean Dynamics, 52, 133-151, 2002.
Springer holds the copyright of this article and the original version is available on http://link.springer.de
Indian Ocean. Part 1: Validation of the Miami isopycnic coordinate ocean model,and Part 2: ENSO events during 1958-1998,
V.E.J. Haugen, G. Evensen and O.M. Johannessen,
JGR, 107 (C5), 11-1 to 11-23, 2002
An Ensemble Kalman Filter with a 1--D Marine Ecosystem Model,
M. Eknes and G. Evensen,
JMS, 36, 75-100, 2002
Combining geostatistics and Kalman filtering for data assimilation in an estuarine system,
L. Bertino, G. Evensen and H. Wackernagel,
Inverse Problems, 18, 1-23, 2002

Sequential Data Assimilation for Nonlinear Dynamics: The Ensemble Kalman Filter,
G. Evensen,
In Ocean Forecasting: Conceptual basis and applications, edited by N. Pinardi and J. D. Woods, Springer-Verlag Berlin Heidelberg, 2002

Application of ensemble-based techniques in fish stock assessment,
Rune Gronnevik and Geir Evensen,
Sarsia, 86: 517-526, 2001

A singular evolutive extended Kalman filter to assimilate ocean color data in a coupled physical-biochemical model of the North Atlantic,
V. Carmillet, J.-M. Brankart, P. Brasseur, H. Drange and G. Evensen,
Ocean Modelling, 3, 167-192, 2001

A Weak Constraint Inverse for a Zero Dimensional Marine Ecosystem Model,
L.-J. Natvik, M. Eknes and G. Evensen,
JMS, 28, 1-2, pp. 19-44, 2001

Satellite earth observation in operational oceanography,
O.M. Johannessen, S. Sandven, A.D. Jenkins, D. Durand, L.H. Pettersson, H. Espedal, G. Evensen and T. Hamre,
Coastal Engineering, 41, pp. 155-176, 2000

An Ensemble Kalman Smoother for Nonlinear Dynamics,
Geir Evensen and Peter Jan van Leeuwen,
Mon. Weather Rev., 128, pp. 1852-1867, 2000

Results From a Hindcast Study of the Ocean Circulation Off the West Coast of Africa,
Geir Evensen,
Proceedings from Offshore Technology Conference, vol. 1, pp. 179-188, 1999

Coordinate Transformation on a Sphere Using Conformal Mapping,
M. Bentsen, G. Evensen, H. Drange and A. D. Jenkins,
Mon. Weather Rev., 127, pp. 2733--2740, 1999

Parameter estimation in dynamical models
Geir Evensen, D. Dee, J. Schroter
NATO ASI, Ocean Modeling and Parameterizations edited by E. P. Chassignet and J. Verron, 1998

On the Analysis Scheme in the Ensemble Kalman Filter
Gerrit Burgers, Peter Jan van Leeuwen and Geir Evensen
Mon. Weather Rev., 126, pp. 1719-1724, 1998

of Ensemble Integrations for Predictability Studies and Data Assimilation
Geir Evensen
Published in: Monte Carlo Simulations in Oceanography, Proceedings 'Aha Huliko'a Hawaiian Winter Workshop, University of Hawaii at Manoa, January 14--17, 1997

Solving for the generalized inverse of the Lorenz model
Geir Evensen and Nabil Fario
J. Meteor. Soc. Japan, 75, 229-243, 1997

Parameter Estimation Solving a Weak Constraint Variational Formulation for an Ekman Model
Mette Eknes and Geir Evensen
J. Geophys. Res., 102(C6), 12,479-12,491, 1997

Advanced data assimilation for strongly nonlinear dynamics
Geir Evensen
Mon. Weather Rev., 125, 1342-1354, 1997

Data assimilation for coastal zone monitoring and forecasting
Geir Evensen and Helge Drange
In Operational Oceanography: The Challenge for European Co-operation, edited by Stel, J.H., Behrens, H. W.A., Borst, J.C., Droppert, L.J., and v.d. Meulen, J., pp. 516--522, 1997, Elsevier Science.

Data Assimilation and Inverse Methods in Terms of a Probabilistic Formulation
Peter Jan van Leeuwen and Geir Evensen
Mon. Weather Rev., 124, pp. 2898-2913, 1996

Assimilation of Geosat Altimeter Data for the Agulhas Current using the Ensemble Kalman Filter with a Quasi-Geostrophic Model
Geir Evensen and Peter Jan van Leeuwen
Mon. Weather Rev., 124, pp. 85-96, 1996

Comparison of sequential updating, Kalman filter and variational methods for assimilating Rossby waves in the simulated Geosat altimeter data into a quasi-geostrophic model
Motoyoshi Ikeda and Geir Evensen and L. Cong
Journal of Marine Systems, 6, 15-30, 1995

Inverse Methods and Data Assimilation in Nonlinear Ocean Models
Geir Evensen
Physica D, 77, pp. 108-129, 1994

Sequential data assimilation with a nonlinear quasi-geostrophic model using Monte Carlo methods to forecast error statistics
Geir Evensen
J. Geophys. Res., (99), pp 10,143-10,162, 1994

Monitoring and modeling of the marine coastal environment
Johnny A. Johannessen and Lars P. R{\o}ed and Ola M. Johannessen and Geir Evensen and Bruce Hackett and Lasse H. Petterson and Peter M. Haugan and Stein Sandven and Robert Shuchman
Photogrametric Eng. and Remote Sensing, (59), pp 351-361, 1993

Open Boundary Conditions for the Extended Kalman Filter With a Quasi-Geostrophic Ocean Model
Geir Evensen
J. Geophys. Res., (98), pp 16,529-16,546, 1993

Using the Extended Kalman Filter with a Multilayer Quasi-Geostrophic Ocean Model
Geir Evensen
J. Geophys. Res., (97), pp. 17,905-17,924, 1992

Modeled and observed Mesoscale Circulation and wave-current refraction during the 1988 Norwegian continental shelf experiment
Peter M. Haugan and Geir Evensen and Johnny A. Johannessen and Ola M. Johannessen and Lasse Pettersson
JGR, C6 (96), pp. 10,487-10,506, 1991

Neutral plasma solution in a beam generated plasma using a one dimensional fluid model
Geir Evensen and Alf H. {\O}ien
Physica Scripta, (44), pp. 587-595, 1991