Johannes Röhrs
Om
Johannes Röhrs er Professor II ved Institutt for teknisk kybernetikk ved NTNU, med hovedstilling som leder for avdeling for Hav og Is ved Meteorologisk institutt.
Han har doktorgrad i Oseanografi fra Universitet i Bergen (2014) og mastergrad i Meteorologi fra Universitetet i Hamburg.
Forskning
My research is motivated by practical needs for understanding and forecasting of the upper ocean and sea ice. I have been working on drift modeling, data assimilation, marine pollution, ocean current predictions, and marine ecosystem functioning. Specific topics have been wave-current interaction, plankton transport, oil drift modelling, marine plastic pathways, sea ice, and data assimilation using 4D-var and ensemble prediction techniques. I am passionate about using a wide range of methods including dynamic modelling, neural networks, experimental field work, and remote sensing.
Key topics
- Operational Oceanography
- Upper ocean dynamics
- Numeric and data-driven modeling
- Data assimilation
- Ensemble prediction
- Remote sensing
Publikasjoner
2025
-
Palerme, Cyril;
Röhrs, Johannes;
Lavergne, Thomas;
Rusin, Jozef;
Kvanum, Are Frode;
Sørensen, John Atle Macdonald;
Melsom, Arne;
Brajard, Julien;
Idzanovic, Martina;
Durán Moro, Marina.
(2025)
MET-AICE v1.0: an operational data-driven sea ice prediction system for the European Arctic.
Geoscientific Model Development
Vitenskapelig artikkel
-
Grue, John;
Röhrs, Johannes.
(2025)
Nonlinear internal wave groups due to the interplay between a coastal current, the tide and a ridge-valley shelf topography.
Journal of Nonlinear Waves
Vitenskapelig artikkel
-
Rabault, Jean;
Halsne, Trygve;
Carrasco, Ana;
Korosov, Anton;
Voermans, Joey;
Bohlinger, Patrik;
Debernard, Jens Boldingh;
Müller, Malte;
Breivik, Øyvind;
Nose, Takehiko.
(2025)
Buoy measurements of strong waves in ice amplitude modulation: a signature of the impact of sea ice closedness on waves in ice attenuation.
The Cryosphere
Vitenskapelig artikkel
-
Aguiar, Victor Cesar Martins de;
Moiseev, Artem;
Johansson, Malin;
Röhrs, Johannes;
Johnsen, Harald;
Eltoft, Torbjørn.
(2025)
Assessing Ocean Surface Radial Current Uncertainties Derived from SAR via Atmospheric Ensemble Modeling.
IEEE Geoscience and Remote Sensing Letters
Vitenskapelig artikkel
-
Nordam, Tor;
Dissanayake, Anusha Lakmali;
Brakstad, Odd Gunnar;
Hakvåg, Sigrid;
Øverjordet, Ida Beathe;
Litzler, Emma;
Nepstad, Raymond;
Drews, Annika;
Röhrs, Johannes.
(2025)
Fate of Dissolved Methane from Ocean Floor Seeps.
Environmental Science and Technology
Vitenskapelig artikkel
-
Vikebø, Frode Bendiksen;
Nepstad, Raymond;
Matuszak, Mateusz;
Rikardsen, Edel S. U.;
Laurel, Benjamin J.;
Meier, Sonnich;
Eriksen, Elena;
Röhrs, Johannes;
Christensen, Kai Håkon;
Smieszek-Rice, Malgorzata Dominika.
(2025)
Polar cod early life stage exposure to potential oil spills in the Arctic.
Aquatic Toxicology
Vitenskapelig artikkel
-
Aguiar, Victor Cesar Martins de;
Idzanovic, Martina;
Röhrs, Johannes;
Johansson, Malin.
(2025)
Performance diagnostics for probabilistic Lagrangian drift prediction.
Journal of operational oceanography. Publisher: The Institute of Marine Engineering, Science & Technology
Vitenskapelig artikkel
-
Matuszak, Mateusz;
Röhrs, Johannes;
Isachsen, Pål Erik;
Idzanovic, Martina.
(2025)
Uncertainties in the finite-time Lyapunov exponent in an ocean ensemble prediction model.
Ocean Science
Vitenskapelig artikkel
2024
-
Rabault, Jean;
Taelman, Catherine Cecilia A;
Idzanovic, Martina;
Hope, Gaute;
Nose, Takehiko;
Kristoffersen, Yngve;
Jensen, Atle;
Breivik, Øyvind;
Bryhni, Helge;
Hoppmann, Mario.
(2024)
A position and wave spectra dataset of Marginal Ice Zone dynamics collected around Svalbard in 2022 and 2023.
Scientific Data
Vitenskapelig artikkel
2023
-
Röhrs, Johannes;
Halsne, Trygve;
Sutherland, Graig;
Dagestad, Knut-Frode;
Hole, Lars Robert;
Brostrøm, Gøran;
Christensen, Kai Håkon.
(2023)
Current shear and turbulence during a near-inertial wave.
Frontiers in Marine Science
Vitenskapelig artikkel
-
Aguiar, Victor Cesar Martins de;
Röhrs, Johannes;
Johansson, Malin;
Eltoft, Torbjørn.
(2023)
Assessing ocean ensemble drift predictions by comparison with observed oil slicks.
Frontiers in Marine Science
Vitenskapelig artikkel
-
Idzanovic, Martina;
Rikardsen, Edel;
Röhrs, Johannes.
(2023)
Forecast uncertainty and ensemble spread in surface currents from a regional ocean model.
Frontiers in Marine Science
Vitenskapelig artikkel
-
Röhrs, Johannes;
Gusdal, Yvonne;
Rikardsen, Edel S. U.;
Durán Moro, Marina;
Brændshøi, Jostein;
Kristensen, Nils Melsom;
Fritzner, Sindre Markus;
Wang, Keguang;
Sperrevik, Ann Kristin;
Idzanovic, Martina.
(2023)
Barents-2.5km v2.0: an operational data-assimilative coupled ocean and sea ice ensemble prediction model for the Barents Sea and Svalbard.
Geoscientific Model Development
Vitenskapelig artikkel
2021
-
Strand, Kjersti Opstad;
Huserbråten, Mats;
Dagestad, Knut-Frode;
Mauritzen, Cecilie;
Grøsvik, Bjørn Einar;
Nogueira, Leticia Antunes;
Melsom, Arne;
Röhrs, Johannes.
(2021)
Potential sources of marine plastic from survey beaches in the Arctic and Northeast Atlantic.
Science of the Total Environment
Vitenskapelig artikkel
-
Röhrs, Johannes;
Sutherland, Graig;
Jeans, Gus;
Bedington, Michael;
Sperrevik, Ann Kristin;
Dagestad, Knut-Frode;
Gusdal, Yvonne;
Mauritzen, Cecilie;
Dale, Andrew;
Lacasce, Joseph Henry.
(2021)
Surface currents in operational oceanography: Key applications, mechanisms, and methods.
Journal of operational oceanography. Publisher: The Institute of Marine Engineering, Science & Technology
Vitenskapelig artikkel
2020
-
Brekke, Camilla;
Espeseth, Martine;
Dagestad, Knut-Frode;
Röhrs, Johannes;
Hole, Lars Robert;
Reigber, Andreas.
(2020)
Integrated analysis of multi-sensor datasets and oil drift simulations - a free floating oil experiment in the open ocean.
Journal of Geophysical Research (JGR): Oceans
Vitenskapelig artikkel
-
Sutherland, Graig;
Soontiens, Nancy;
Davidson, Fraser;
Smith, Gregory C.;
Bernier, Natacha;
Blanken, Hauke;
Schillinger, Douglas;
Marcotte, Guillaume;
Röhrs, Johannes;
Dagestad, Knut-Frode.
(2020)
Evaluating the leeway coefficient of ocean drifters using operational marine environmental prediction systems.
Journal of Atmospheric and Oceanic Technology
Vitenskapelig artikkel
2019
-
Dagestad, Knut-Frode;
Röhrs, Johannes.
(2019)
Prediction of ocean surface trajectories using satellite derived vs. modeled ocean currents.
Remote Sensing of Environment
Vitenskapelig artikkel
-
Hole, Lars Robert;
Dagestad, Knut-Frode;
Röhrs, Johannes;
Wettre, Cecilie Drabløs;
Kourafalou, Vassiliki H.;
Androulidakis, Yannis;
Kang, HeeSook;
LeHenaff, Matthieu;
Garcia-Pineda, Oscar.
(2019)
The DeepWater Horizon Oil Slick: Simulations of
River Front Effects and Oil Droplet Size Distribution.
Journal of Marine Science and Engineering (JMSE)
Vitenskapelig artikkel
-
Nordam, Tor;
Kristiansen, Ruben;
Nepstad, Raymond;
Röhrs, Johannes.
(2019)
Numerical analysis of boundary conditions in a Lagrangian particle model for vertical mixing, transport and surfacing of buoyant particles in the water column.
Ocean Modelling
Vitenskapelig artikkel
-
Nordam, Tor;
Nepstad, Raymond;
Litzler, Emma;
Röhrs, Johannes.
(2019)
On the use of random walk schemes in oil spill modelling.
Marine Pollution Bulletin
Vitenskapelig artikkel
2018
-
Röhrs, Johannes;
Dagestad, Knut-Frode;
Asbjørnsen, Helene;
Nordam, Tor;
Skancke, Jørgen;
Jones, Cathleen;
Brekke, Camilla.
(2018)
The effect of vertical mixing on the horizontal drift of oil spills.
Ocean Science
Vitenskapelig artikkel
-
Dagestad, Knut-Frode;
Röhrs, Johannes;
Breivik, Øyvind;
Ådlandsvik, Bjørn.
(2018)
OpenDrift v1.0: A generic framework for trajectory modelling.
Geoscientific Model Development
Vitenskapelig artikkel
-
Röhrs, Johannes;
Sperrevik, Ann Kristin;
Christensen, Kai Håkon;
Breivik, Øyvind.
(2018)
NorShelf: An ocean reanalysis and data-assimilative forecast model for the Norwegian Shelf Sea.
Meteorologisk institutt
Forskningsrapport
-
Christensen, Kai Håkon;
Breivik, Øyvind;
Dagestad, Knut-Frode;
Röhrs, Johannes;
Ward, Brian.
(2018)
Short-term predictions of: Oceanic drift.
Oceanography
Vitenskapelig oversiktsartikkel
2017
-
Sperrevik, Ann Kristin;
Röhrs, Johannes;
Christensen, Kai Håkon.
(2017)
Impact of data assimilation on Eulerian versus Lagrangian
estimates of upper ocean transport.
Journal of Geophysical Research (JGR): Oceans
Vitenskapelig artikkel
2016
-
Jones, Cathleen Elaine;
Dagestad, Knut-Frode;
Breivik, Øyvind;
Holt, Benjamin;
Röhrs, Johannes;
Christensen, Kai Håkon;
Espeseth, Martine;
Brekke, Camilla;
Skrunes, Stine.
(2016)
Measurement and modeling of oil slick transport.
Journal of Geophysical Research (JGR): Oceans
Vitenskapelig artikkel
2015
-
Furevik, Birgitte Rugaard;
Schyberg, Harald;
Noer, Gunnar;
Tveter, Frank;
Röhrs, Johannes.
(2015)
ASAR and ASCAT in polar low situations.
Journal of Atmospheric and Oceanic Technology
Vitenskapelig artikkel
-
Röhrs, Johannes;
Sperrevik, Ann Kristin;
Christensen, Kai Håkon;
Broström, Göran;
Breivik, Øyvind.
(2015)
Comparison of HF radar measurements with Eulerian and Lagrangian surface currents.
Ocean Dynamics
Vitenskapelig artikkel
-
Röhrs, Johannes;
Christensen, Kai Håkon.
(2015)
Drift in the uppermost part of the ocean.
Geophysical Research Letters
Vitenskapelig artikkel
-
Sperrevik, Ann Kristin;
Christensen, Kai Håkon;
Röhrs, Johannes.
(2015)
Constraining energetic slope currents through assimilation of high-frequency radar observations.
Ocean Science
Vitenskapelig artikkel
2014
-
Röhrs, Johannes;
Furevik, Birgitte Rugaard;
Christensen, Kai Håkon.
(2014)
Surface wave effects in the upper ocean and consequences for biological modeling.
Universitetet i Bergen
Doktoravhandling
-
Röhrs, Johannes;
Christensen, Kai Håkon;
Vikebø, Frode Bendiksen;
Sundby, Svein;
Sætra, Øyvind;
Broström, Göran.
(2014)
Wave-induced transport and vertical mixing of pelagic eggs and larvae.
Limnology and Oceanography
Vitenskapelig artikkel
2013
-
Christensen, Kai Håkon;
Röhrs, Johannes;
Ward, Brian;
Fer, Ilker;
Broström, Göran;
Sætra, Øyvind;
Breivik, Øyvind.
(2013)
Surface wave measurements using a ship-mounted ultrasonic altimeter.
Methods in oceanography
Vitenskapelig artikkel
2012
-
Röhrs, Johannes;
Kaleschke, Lars;
Bröhan, David;
Siligam, P. K..
(2012)
An algorithm to detect sea ice leads by using AMSR-E passive microwave imagery.
Ocean Dynamics
Vitenskapelig artikkel
-
Röhrs, Johannes;
Christensen, Kai Håkon;
Hole, Lars Robert;
Boström, Göran;
Drivdal, Magnus;
Sundby, Svein.
(2012)
Observation-based evaluation of surface wave effects on currents and trajectory forecasts.
Ocean Dynamics
Vitenskapelig artikkel
Tidsskriftspublikasjoner
-
Palerme, Cyril;
Röhrs, Johannes;
Lavergne, Thomas;
Rusin, Jozef;
Kvanum, Are Frode;
Sørensen, John Atle Macdonald;
Melsom, Arne;
Brajard, Julien;
Idzanovic, Martina;
Durán Moro, Marina.
(2025)
MET-AICE v1.0: an operational data-driven sea ice prediction system for the European Arctic.
Geoscientific Model Development
Vitenskapelig artikkel
-
Grue, John;
Röhrs, Johannes.
(2025)
Nonlinear internal wave groups due to the interplay between a coastal current, the tide and a ridge-valley shelf topography.
Journal of Nonlinear Waves
Vitenskapelig artikkel
-
Rabault, Jean;
Halsne, Trygve;
Carrasco, Ana;
Korosov, Anton;
Voermans, Joey;
Bohlinger, Patrik;
Debernard, Jens Boldingh;
Müller, Malte;
Breivik, Øyvind;
Nose, Takehiko.
(2025)
Buoy measurements of strong waves in ice amplitude modulation: a signature of the impact of sea ice closedness on waves in ice attenuation.
The Cryosphere
Vitenskapelig artikkel
-
Aguiar, Victor Cesar Martins de;
Moiseev, Artem;
Johansson, Malin;
Röhrs, Johannes;
Johnsen, Harald;
Eltoft, Torbjørn.
(2025)
Assessing Ocean Surface Radial Current Uncertainties Derived from SAR via Atmospheric Ensemble Modeling.
IEEE Geoscience and Remote Sensing Letters
Vitenskapelig artikkel
-
Furevik, Birgitte Rugaard;
Schyberg, Harald;
Noer, Gunnar;
Tveter, Frank;
Röhrs, Johannes.
(2015)
ASAR and ASCAT in polar low situations.
Journal of Atmospheric and Oceanic Technology
Vitenskapelig artikkel
-
Röhrs, Johannes;
Kaleschke, Lars;
Bröhan, David;
Siligam, P. K..
(2012)
An algorithm to detect sea ice leads by using AMSR-E passive microwave imagery.
Ocean Dynamics
Vitenskapelig artikkel
-
Röhrs, Johannes;
Dagestad, Knut-Frode;
Asbjørnsen, Helene;
Nordam, Tor;
Skancke, Jørgen;
Jones, Cathleen;
Brekke, Camilla.
(2018)
The effect of vertical mixing on the horizontal drift of oil spills.
Ocean Science
Vitenskapelig artikkel
-
Dagestad, Knut-Frode;
Röhrs, Johannes.
(2019)
Prediction of ocean surface trajectories using satellite derived vs. modeled ocean currents.
Remote Sensing of Environment
Vitenskapelig artikkel
-
Röhrs, Johannes;
Sperrevik, Ann Kristin;
Christensen, Kai Håkon;
Broström, Göran;
Breivik, Øyvind.
(2015)
Comparison of HF radar measurements with Eulerian and Lagrangian surface currents.
Ocean Dynamics
Vitenskapelig artikkel
-
Brekke, Camilla;
Espeseth, Martine;
Dagestad, Knut-Frode;
Röhrs, Johannes;
Hole, Lars Robert;
Reigber, Andreas.
(2020)
Integrated analysis of multi-sensor datasets and oil drift simulations - a free floating oil experiment in the open ocean.
Journal of Geophysical Research (JGR): Oceans
Vitenskapelig artikkel
-
Sperrevik, Ann Kristin;
Röhrs, Johannes;
Christensen, Kai Håkon.
(2017)
Impact of data assimilation on Eulerian versus Lagrangian
estimates of upper ocean transport.
Journal of Geophysical Research (JGR): Oceans
Vitenskapelig artikkel
-
Sutherland, Graig;
Soontiens, Nancy;
Davidson, Fraser;
Smith, Gregory C.;
Bernier, Natacha;
Blanken, Hauke;
Schillinger, Douglas;
Marcotte, Guillaume;
Röhrs, Johannes;
Dagestad, Knut-Frode.
(2020)
Evaluating the leeway coefficient of ocean drifters using operational marine environmental prediction systems.
Journal of Atmospheric and Oceanic Technology
Vitenskapelig artikkel
-
Röhrs, Johannes;
Christensen, Kai Håkon.
(2015)
Drift in the uppermost part of the ocean.
Geophysical Research Letters
Vitenskapelig artikkel
-
Sperrevik, Ann Kristin;
Christensen, Kai Håkon;
Röhrs, Johannes.
(2015)
Constraining energetic slope currents through assimilation of high-frequency radar observations.
Ocean Science
Vitenskapelig artikkel
-
Strand, Kjersti Opstad;
Huserbråten, Mats;
Dagestad, Knut-Frode;
Mauritzen, Cecilie;
Grøsvik, Bjørn Einar;
Nogueira, Leticia Antunes;
Melsom, Arne;
Röhrs, Johannes.
(2021)
Potential sources of marine plastic from survey beaches in the Arctic and Northeast Atlantic.
Science of the Total Environment
Vitenskapelig artikkel
-
Hole, Lars Robert;
Dagestad, Knut-Frode;
Röhrs, Johannes;
Wettre, Cecilie Drabløs;
Kourafalou, Vassiliki H.;
Androulidakis, Yannis;
Kang, HeeSook;
LeHenaff, Matthieu;
Garcia-Pineda, Oscar.
(2019)
The DeepWater Horizon Oil Slick: Simulations of
River Front Effects and Oil Droplet Size Distribution.
Journal of Marine Science and Engineering (JMSE)
Vitenskapelig artikkel
-
Röhrs, Johannes;
Christensen, Kai Håkon;
Hole, Lars Robert;
Boström, Göran;
Drivdal, Magnus;
Sundby, Svein.
(2012)
Observation-based evaluation of surface wave effects on currents and trajectory forecasts.
Ocean Dynamics
Vitenskapelig artikkel
-
Nordam, Tor;
Dissanayake, Anusha Lakmali;
Brakstad, Odd Gunnar;
Hakvåg, Sigrid;
Øverjordet, Ida Beathe;
Litzler, Emma;
Nepstad, Raymond;
Drews, Annika;
Röhrs, Johannes.
(2025)
Fate of Dissolved Methane from Ocean Floor Seeps.
Environmental Science and Technology
Vitenskapelig artikkel
-
Röhrs, Johannes;
Halsne, Trygve;
Sutherland, Graig;
Dagestad, Knut-Frode;
Hole, Lars Robert;
Brostrøm, Gøran;
Christensen, Kai Håkon.
(2023)
Current shear and turbulence during a near-inertial wave.
Frontiers in Marine Science
Vitenskapelig artikkel
-
Dagestad, Knut-Frode;
Röhrs, Johannes;
Breivik, Øyvind;
Ådlandsvik, Bjørn.
(2018)
OpenDrift v1.0: A generic framework for trajectory modelling.
Geoscientific Model Development
Vitenskapelig artikkel
-
Christensen, Kai Håkon;
Röhrs, Johannes;
Ward, Brian;
Fer, Ilker;
Broström, Göran;
Sætra, Øyvind;
Breivik, Øyvind.
(2013)
Surface wave measurements using a ship-mounted ultrasonic altimeter.
Methods in oceanography
Vitenskapelig artikkel
-
Nordam, Tor;
Kristiansen, Ruben;
Nepstad, Raymond;
Röhrs, Johannes.
(2019)
Numerical analysis of boundary conditions in a Lagrangian particle model for vertical mixing, transport and surfacing of buoyant particles in the water column.
Ocean Modelling
Vitenskapelig artikkel
-
Aguiar, Victor Cesar Martins de;
Röhrs, Johannes;
Johansson, Malin;
Eltoft, Torbjørn.
(2023)
Assessing ocean ensemble drift predictions by comparison with observed oil slicks.
Frontiers in Marine Science
Vitenskapelig artikkel
-
Vikebø, Frode Bendiksen;
Nepstad, Raymond;
Matuszak, Mateusz;
Rikardsen, Edel S. U.;
Laurel, Benjamin J.;
Meier, Sonnich;
Eriksen, Elena;
Röhrs, Johannes;
Christensen, Kai Håkon;
Smieszek-Rice, Malgorzata Dominika.
(2025)
Polar cod early life stage exposure to potential oil spills in the Arctic.
Aquatic Toxicology
Vitenskapelig artikkel
-
Idzanovic, Martina;
Rikardsen, Edel;
Röhrs, Johannes.
(2023)
Forecast uncertainty and ensemble spread in surface currents from a regional ocean model.
Frontiers in Marine Science
Vitenskapelig artikkel
-
Jones, Cathleen Elaine;
Dagestad, Knut-Frode;
Breivik, Øyvind;
Holt, Benjamin;
Röhrs, Johannes;
Christensen, Kai Håkon;
Espeseth, Martine;
Brekke, Camilla;
Skrunes, Stine.
(2016)
Measurement and modeling of oil slick transport.
Journal of Geophysical Research (JGR): Oceans
Vitenskapelig artikkel
-
Nordam, Tor;
Nepstad, Raymond;
Litzler, Emma;
Röhrs, Johannes.
(2019)
On the use of random walk schemes in oil spill modelling.
Marine Pollution Bulletin
Vitenskapelig artikkel
-
Röhrs, Johannes;
Sutherland, Graig;
Jeans, Gus;
Bedington, Michael;
Sperrevik, Ann Kristin;
Dagestad, Knut-Frode;
Gusdal, Yvonne;
Mauritzen, Cecilie;
Dale, Andrew;
Lacasce, Joseph Henry.
(2021)
Surface currents in operational oceanography: Key applications, mechanisms, and methods.
Journal of operational oceanography. Publisher: The Institute of Marine Engineering, Science & Technology
Vitenskapelig artikkel
-
Röhrs, Johannes;
Christensen, Kai Håkon;
Vikebø, Frode Bendiksen;
Sundby, Svein;
Sætra, Øyvind;
Broström, Göran.
(2014)
Wave-induced transport and vertical mixing of pelagic eggs and larvae.
Limnology and Oceanography
Vitenskapelig artikkel
-
Rabault, Jean;
Taelman, Catherine Cecilia A;
Idzanovic, Martina;
Hope, Gaute;
Nose, Takehiko;
Kristoffersen, Yngve;
Jensen, Atle;
Breivik, Øyvind;
Bryhni, Helge;
Hoppmann, Mario.
(2024)
A position and wave spectra dataset of Marginal Ice Zone dynamics collected around Svalbard in 2022 and 2023.
Scientific Data
Vitenskapelig artikkel
-
Aguiar, Victor Cesar Martins de;
Idzanovic, Martina;
Röhrs, Johannes;
Johansson, Malin.
(2025)
Performance diagnostics for probabilistic Lagrangian drift prediction.
Journal of operational oceanography. Publisher: The Institute of Marine Engineering, Science & Technology
Vitenskapelig artikkel
-
Matuszak, Mateusz;
Röhrs, Johannes;
Isachsen, Pål Erik;
Idzanovic, Martina.
(2025)
Uncertainties in the finite-time Lyapunov exponent in an ocean ensemble prediction model.
Ocean Science
Vitenskapelig artikkel
-
Christensen, Kai Håkon;
Breivik, Øyvind;
Dagestad, Knut-Frode;
Röhrs, Johannes;
Ward, Brian.
(2018)
Short-term predictions of: Oceanic drift.
Oceanography
Vitenskapelig oversiktsartikkel
-
Röhrs, Johannes;
Gusdal, Yvonne;
Rikardsen, Edel S. U.;
Durán Moro, Marina;
Brændshøi, Jostein;
Kristensen, Nils Melsom;
Fritzner, Sindre Markus;
Wang, Keguang;
Sperrevik, Ann Kristin;
Idzanovic, Martina.
(2023)
Barents-2.5km v2.0: an operational data-assimilative coupled ocean and sea ice ensemble prediction model for the Barents Sea and Svalbard.
Geoscientific Model Development
Vitenskapelig artikkel
Rapport
-
Röhrs, Johannes;
Sperrevik, Ann Kristin;
Christensen, Kai Håkon;
Breivik, Øyvind.
(2018)
NorShelf: An ocean reanalysis and data-assimilative forecast model for the Norwegian Shelf Sea.
Meteorologisk institutt
Forskningsrapport
Studentoppgave eller avhandling
-
Röhrs, Johannes;
Furevik, Birgitte Rugaard;
Christensen, Kai Håkon.
(2014)
Surface wave effects in the upper ocean and consequences for biological modeling.
Universitetet i Bergen
Doktoravhandling
Formidling
2025
-
KonferanseforedragJohansson, Anna Malin Kristin; Jones, Cathleen Elaine; Plaza-Faverola, Andreia; Röhrs, Johannes; Mattingsdal, Rune. (2025) Investigation of naturally occurring oil seeps outside Prins Karls Forland using airborne and satellite data. Polar Night Week 2025
2024
-
KonferanseposterAguiar, Victor Cesar Martins de; Idzanovic, Martina; Röhrs, Johannes; Johansson, Anna Malin Kristin; Eltoft, Torbjørn. (2024) Time-lagged Ensemble Model Verification for Short-term Prediction of Drifter Trajectories. EGU General Assembly 2024
-
KonferanseposterLitzler, Emma; Nepstad, Raymond; Nordam, Tor; Röhrs, Johannes; Christensen, Kai Håkon; Rikardsen, Edel. (2024) Oil spill risk assessment based on ocean model ensemble prediction system. EGU General Assembly
2023
-
KonferanseforedragRöhrs, Johannes. (2023) Internal wave driven vertical exchange at the Hola trough. 7th DNVA-RSE Norway-Scotland Symposium on Waves and Marine Physical and Biological Processes
-
KonferanseposterAguiar, Victor Cesar Martins de; Idzanovic, Martina; Röhrs, Johannes; Johansson, Anna Malin Kristin; Eltoft, Torbjørn. (2023) Time-lagged Ensemble Model Verification for Trajectory Prediction. CIRFA Annual Conference
-
ForedragIdzanovic, Martina; Rikardsen, Edel; Röhrs, Johannes. (2023) Forecast uncertainty and ensemble spread in surface currents from a regional ocean model. ESA A-TSCV Workshop
2022
-
KonferanseforedragGrue, John; Röhrs, Johannes. (2022) Groups of short internal waves driven by interacting coastal current and internal tide at ridge-canyon topography. IX International Symposium on Stratified Flows
-
KonferanseposterIdzanovic, Martina; Röhrs, Johannes; Rikardsen, Edel. (2022) Analysis and Forecast Uncertainty of Surface Currents in the Barents-2.5 EPS. CIRFA Annual Conference 2022
2021
-
KonferanseposterIdzanovic, Martina; Röhrs, Johannes; Rikardsen, Edel. (2021) Validation and configuration of ensemble prediction systems with focus on forecasting of surface currents in the Barents Sea. CIRFA Annual Conference 2021
2019
-
KonferanseforedragRöhrs, Johannes; Dagestad, Knut-Frode; Asbjørnsen, Helene; Nordam, Tor; Skancke, Jørgen; Jones, Cathleen Elaine; Brekke, Camilla. (2019) Vertical mixing and horizontal drift of oil spills: simulations with the opensource oil spill model OpenOil. EGU General Assembly 2019
2017
-
KonferanseforedragRöhrs, Johannes; Christensen, Kai Håkon. (2017) Drift in the uppermost part of the ocean - 5th Norway-Scotland wave symposium 2017. 5th Norway-Scotland Wave Symposium
2016
-
KonferanseforedragRöhrs, Johannes; Christensen, Kai Håkon. (2016) Wind- and wave induced drift in the uppermost part of the ocean. Ocean Science Meeting
2014
-
KonferanseposterRöhrs, Johannes; Sundby, Svein; Vikebø, Frode Bendiksen; Christensen, Kai Håkon. (2014) SURFACE GRAVITY WAVES TRANSPORTING PELAGIC FISH EGGS: STOKES DRIFT AND VERTICAL MIXING. AGU/ASLO
-
KonferanseforedragSperrevik, Ann Kristin; Christensen, Kai Håkon; Röhrs, Johannes. (2014) ASSIMILATION OF HF RADAR CURRENTS IN AN EDDY RESOLVING MODEL. AGU/ASLO Ocean Science Meeting 2014
2012
-
KonferanseposterBroström, Göran; Christensen, Kai Håkon; Ward, Brian; Röhrs, J.; Drivdal, Magnus Bjørn; Sutherland, G.; Sætra, Øyvind; Hole, Lars R.; Sundby, Svein; Fer, Ilker. (2012) Waves, mixing, and drift in the upper ocean. Ocean Science Meeting
-
KonferanseposterRöhrs, Johannes; Christensen, Kai Håkon; Hole, Lars R; Brostrøm, Gøran; Drivdal, Magnus Bjørn; Sundby, Svein. (2012) Observations of surface wave effects and impacts on drifter trajectories. AGU Ocean Science Meeting 2012
-
KonferanseposterChristensen, Kai Håkon; Röhrs, Johannes; Ward, Brian; Drivdal, Magnus Bjørn; Brostrøm, Gøran. (2012) Surface wave measurements using ship-mounted ultrasonic altimeter. AGU Ocean Science Meeting 2012