Geir Evensen

Job Position: 
Professor II
 
Department: 
Mohn-Sverdrup Center for Global Ocean Studies and Operational Oceanography
 
Group: 
Modelling and Data Assimilation Group
 
E-mail: 
 
Field of Research: 
other scientific field
 

Main Research Area

Ocean Modelling, Data Assimilation and Forecasting

Project leader of the following projects

  1. eVITA-EnKF: Forecasting non-linear systems using the ensemble Kalman filter and related methods

Peer Review Publications and Books

19 total publications.

2010

  1. Seiler, A, Aanonsen, SI, Evensen, G, Rivenæs, JC . 2010 . Structural Surface Uncertainty Modeling and Updating Using the Ensemble Kalman Filter . 4 . Society of Petroleum Engineers . SPE Journal . 15
  2. Sakov, P, Evensen, G, Bertino, L . 2010 . Asynchronous data assimilation with the EnKF . 1 . Blackwell Munksgaard . Tellus A . 62A

2009

  1. Evensen, G . 2009 . The ensemble Kalman filter for combined state and parameter estimation . 3 . 83-104 . IEEE Control Systems Society . Control systems magazine . 29

2007

  1. Lisæter, KA, Evensen, G, Laxon, SW . 2007 . Assimilating synthetic CryoSat sea ice thickness in a coupled ice-ocean model . American Geophysical Union . Journal of Geophysical Research (Oceans) . 112

2004

  1. Evensen, G . 2004 . Sampling strategies and square root analysis schemes for the EnKF . 54 . 539-560 . Springer . Ocean Dynamics

2003

  1. Brusdal, KK, Brankart, JM, Halberstadt, G, Evensen, G, Brasseur, P, van Leeuwen, PJ, Dombrowsky, E, Verron, J . 2003 . A demonstration of ensemble based assimilation methods with a layered OGCM from the perspective of operational ocean forecasting systems . 40-41 . 253-289 . Journal of Marine Systems
  2. Evensen, G . 2003 . The Ensemble Kalman Filter: Theoretical Formulation and Practical Implementation . 53 . 343-367 . Ocean Dynamics

2002

  1. Haugen, VJ, Johannessen, OM, Evensen, G . 2002 . Indian Ocean. Part 1: Validation of the Miami isopycnic coordinate ocean model, and Part 2: ENSO events during 1958-1998 . C5 . 11-1-11-23 . American Geophysical Union . Journal of Geophysical Research . 107
  2. Eknes, M, Evensen, G . 2002 . An Ensemble Kalman Filter with a 1-D Marine Ecosystem Model . 36 . 75-100 . Journal of Marine Systems
  3. Haugen, VJ, Johannessen, OM, Evensen, G . 2002 . Mesoscale modeling study of the oceanographic conditions off the south west coast of India . 3 . 321-337 . The Academy . Journal of Earth System Science . 111
  4. Haugen, VJ, Evensen, G . 2002 . Assimilation of SST and SLA data into an OGCM for the Indian Ocean . 133-151 . Springer . Ocean Dynamics . 52

1997

  1. Evensen, G, Drange, H . 1997 . Data assimilation for coastal zone monitoring and forecasting . 516-522 . Elsevier Science . Operational Oceanography: The challenge for European co-operation. Proceedings of the First International Conference on EuroGOOS 7.-11. October 1996, The Hague, The Netherlands.
  2. Eknes, M, Evensen, G . 1997 . Parameter Estimation Solving a Weak Constraint Variational Formulation for an Ekman Model . C6 . 12479-12491 . American Geophysical Union . Journal of Geophysical Research: oceans . 102

1995

  1. Evensen, G . 1995 . Comparison of sequential updating, Kalman filter and variational methods for assimilating Rossby waves in the simulated Geosat altimeter data into a quasi-geostropic model . 15-30 . Journal of Marine Systems . 6

1994

  1. Evensen, G . 1994 . Inverse methods and data assimilation in nonlinear ocean models . 77 . 108-129 . Elsevier . Physica D
  2. Evensen, G . 1994 . Sequential data assimilation with a nonlinear quasi-geostrohpic model using Monte Carlo methods to forecast error statistics . C5 . American Geophysical Union . Journal of Geophysical Research . 99

1993

  1. Evensen, G . 1993 . Open boundary conditions for the extended Kalman filter with a quasi-geostrophic model . C9 . American Geophysical Union . Journal of Geophysical Research (Oceans) . 98

1992

  1. Evensen, G . 1992 . Using the Extended Kalman Filter with a Multilayer Quasi-Geostropic Ocean Model . C11 . 17905-17924 . American Geophysical Union . Journal of Geophysical Research (Oceans) . 97

1991

  1. Haugan, PM, Evensen, G, Johannessen, JA, Johannessen, OM, Pettersson, LH . 1991 . Modeled and observed mesoscale circulation and wave-current refraction during the 1988 Norwegian Continental Shelf experiment . C6 . 10487-10506 . American Geophysical Union . Journal of Geophysical Research (Oceans) . 96

Other Publications and Works

2011

  1. Simon, E, Kvamsdal, S, Bojarova, J, Wackernagel, H, Lie, I, Bertino, L, Evensen, G, Sakov, P, Counillon, F . 2011 . Forecasting non-linear systems with the Ensemble Kalman Filter and related data assimilation methods (eVITA-EnKF) . 325 . 19 . NERSC

2010

  1. Seiler, A . 2010 . Reservoir structural model updating using the Ensemble Kalman Filter . University of Bergen, Department of Mathematics . Doctoral Thesis No. 87

2009

  1. Evensen, G . 2009 . Data Assimilation: The Ensemble Kalman Filter . 2nd edition . 320 . Springer
  2. Seiler, A, Rivenæs, JC, Aanonsen, SI, Evensen, G . 2009 . Structural Uncertainty modelling and updating by production data integration . Abu Dhabi, UAE, 19-21 October 2009 . Society of Petroleum Engineers, Inc. . 2009 SPE/EAGE Reservoir Characterization and Simulation Conference
  3. Seiler, A, Evensen, G, Skjervheim, J-A, Hove, J, Vabø, JG . 2009 . Advanced reservoir management workflow using an EnKF based assisted history matching method . The Woodlands, Texas, USA, 2-4 February 2009 . Society of Petroleum Engineers, Inc. . The 2009 SPE Reservoir Simulation Symposium, 65533
  4. Seiler, A, Evensen, G, Skjervheim, J-A, Hove, J, Vabø, JG . 2009 . Using the EnKF for history matching and uncertainty quantification of complex reservoir models . John Wiley and Sons. Inc . Computational Methods for Large-Scale Inverse Problems and Quantification of Uncertainty

2008

  1. Counillon, F . 2008 . Ensemble-based data assimilation with an eddy-resolving model of the Gulf of Mexico . University of Bergen, Geophysical institute . Doctoral Thesis No. 75

2007

  1. Evensen, G, Hove, J, Meisingset, HC, Reiso, E, Seim, KS, Espelid, Ø . 2007 . Using the EnKF for Assisted History Matching of a North Sea Reservoir Model. SPE 106184 . 13 . Woodlands, Texas, 26–28 February 2007 . Society of Petroleum Engineers, Inc. . SPE Reservoir Simulation Symposium
  2. Lisæter, KA . 2007 . A coupled ice - ocean data assimilation system for Arctic monitoring and prediction . University of Bergen, Department of Mathematics . Doctoral Thesis No. 72
  3. Winther, N, Morel, YG, Evensen, G . 2007 . Efficiency of high order numerical schemes for momentum advection . 31-46 . Journal of Marine Systems

2006

  1. Johannessen, JA, Pettersson, LH, Eldevik, T, Durand, D, Evensen, G, Winther, N, Breivik, ØØ . 2006 . Coastal Physical and Biochemical Processes . 3 . 360. P. 179-196 . American Society of Photogrammetry and Remote Sensing . Remote Sensing of the Marine Environment . 6
  2. Evensen, G . 2006 . Data Assimilation -The Ensemble Kalman Filter
  3. Haugen, V, Natvik, L-J, Evensen, G, Berg, A, Flornes, K, Nævdal, G . 2006 . History matching using the ensemble Kalman filter on a North Sea field case. SPE 102430
  4. Winther, N, Evensen, G . 2006 . A hybrid coordinate ocean model for shelf sea simulation . 221-237 . Ocean Modelling

2005

  1. Leeuwenburgh, O, Evensen, G, Bertino, L . 2005 . The impact of ensemble filter definition on the assimilation of temperature profiles in the tropical Pacific . 3291-3300 . Royal Meterological Society . Quarterly Journal of the Royal Meteorological Society . 131
  2. Skjervheim, J-A, Evensen, G, Aanonsen, SI, Ruud, BO, Johansen, TA . 2005 . Incorporating 4D seismic data in reservoir simulation models using ensemble Kalman filter. SPE 95789

2004

  1. Albretsen, J, Winther, N, Søiland, H, Røed, LP, Brusdal, KK, Engedahl, H, Evensen, G, Hackett, B, Johannessen, JA, Skogen, M, Svendsen, E . 2004 . Models in MONCOZE . Report no. 14/2004, Met.no

2003

  1. Bertino, L, Evensen, G, Wackernagel, H . 2003 . Sequential data assimilation techniques in oceanography . 2 . 223-241 . International Statistical Review . 71
  2. Jacob, AA, Hamre, T, Evensen, G, Mughal, KA . 2003 . Developing a Marine Information System by Integrating Existing Ocean Models Using Object-Oriented Technology . 1-2 . 87-106 . Marine Geodesy . 26
  3. Lisæter, KA, Rosanova, JJ, Evensen, G . 2003 . Assimilation of ice concentration in a coupled ice ocean model, using the Ensemble Kalman filter . 368-388 . Ocean Dynamics . 53