Frank Nilsen

Characterising marine heatwaves in the Svalbard Archipelago and surrounding seas

Academic article 2026 Marianne Williams-Kerslake, Helene R. Langehaug, Ragnheid Skogseth, Frank Nilsen, Annette Samuelsen, Silvana Gonzalez, Noel Keenlyside

Mechanisms of warm-water intrusions onto the West Spitsbergen Shelf during winter

Academic article 2025 Lukas Frank, Jon Albretsen, Ragnheid Skogseth, Frank Nilsen, Marius Opsanger Jonassen

Svalbard Marginal Ice Zone 2024: A distributed network of temperature, waves, and sea ice drift observations

Academic article 2025 Malte Müller, Jean Rabault, Chiara de Geeter, Cyril Palerme, Bikas Chandra Bhattarai, Fabrice Collard, Steinar Eastwood, Sylvain Herlédan, Gaute Hope, Nick Hughes, Marius Opsanger Jonassen, Jørn Kristiansen, Frank Nilsen, Olaf Weisser

Towards an integrated data-driven infrastructure (InfraNor)

Academic chapter 2025 Rudolf Denkmann, Wenche Aas, Åshild Ønvik Pedersen, Jørgen Berge, Rune Storvold, Øystein Godøy, Ketil Isaksen, Ann Mari Fjæraa, Njål Gulbrandsen, Hanne H Christiansen, Jean-Charles Gallet, Kjetil Mevold, Eirik Malnes, Virve Ravolainen, Thomas Schuler, Hans Tømmervik, Frank Nilsen, Ilker Fer, Agnar Holten Sivertsen, Shridhar Digambar Jawak, Heikki Lihavainen

Atlantic water inflow into the Arctic Ocean: studies of pathways, transport and mixing processes using observations from ships and autonomous underwater vehicles

Doctoral thesis 2024 Eivind Hugaas Kolås, Ilker Fer, Frank Nilsen, Martin Ludvigsen, Zoe Charlotte Koenig

Vintermørkets hemmeligheter

Blog post 2021 Frank Nilsen

Den perfekte front

Blog post 2021 Frank Nilsen

Winter darkness: Revealing the secrets of the sea – UNIS

Blog post 2021 Frank Nilsen, Eva Toppe Jensen

Jakten på havstrømmene

Blog post 2018 Frank Nilsen

High resolution sea ice monitoring using space borne Synthetic Aperture Radar

Doctoral thesis 2017 Stefan Muckenhuber, Stein Sandven, Frank Nilsen

Wintertime warming of an Arctic shelf in response to large-scale atmospheric circulation

Academic article 2007 Finlo R. Cottier, Frank Nilsen, M.E. Inall, Sebastian Gerland, V. Tverberg, H. Svendsen

Wind-Driven Variability in the Spitsbergen Polar Current and the Svalbard Branch Across the Yermak Plateau

Academic article 2021 Frank Nilsen, Eli Anne Ersdal, Ragnheid Skogseth

When sea ice melted despite the bitter cold / Da sjøis smeltet i frysende kulde — Artica Svalbard

Blog post 2021 Frank Nilsen

Warming of Atlantic Water in two west Spitsbergen fjords over the last century (1912-2009)

Academic article 2013 Alexey K. Pavlov, Vigdis Tverberg, Boris Ivanov, Frank Nilsen, Stig Falk-Petersen, Mats A. Granskog

Warm subsurface waters in Hartogbukta can contribute to ice loss from Austfonna

Conference poster 2023 Ilker Fer, Frank Nilsen, Øyvind Lundesgaard

Warm core mesoscale eddies along the boundary current and in the Sofia Deep north of Svalbard

Conference lecture 2021 Eivind Hugaas Kolås, Kjersti Kalhagen, Zoe Charlotte Koenig, Ilker Fer, Frank Nilsen

Variability and decadal trends in the Isfjorden (Svalbard) ocean climate and circulation – An indicator for climate change in the European Arctic

Academic article 2020 R Skogseth, L.L.A. Olivier, Frank Nilsen, E Falck, N Fraser, V Tverberg, AB Ledang, A Vader, MO Jonassen, J Søreide, F Cottier, J Berge, BV Ivanov, S Falk-Petersen

Turbulence north of Svalbard in summer 2018: mixed layer evolution and Atlantic Water layer dynamics

Conference poster 2020 Zoé Charlotte Koenig, Eivind Kolås, Ilker Fer, Ragnheid Skogseth, Marika Marnela, Frank Nilsen

Tracing sources of freshwater contributions to first-year sea ice in Svalbard fjords

Academic article 2015 Matthew B. Alkire, Frank Nilsen, Eva Falck, Janne Søreide, Tove M. Gabrielsen

Topographically trapped waves along the continental slope north of Svalbard

Conference lecture 2020 Kjersti Kalhagen, Frank Nilsen, Ragnheid Skogseth, Ilker Fer, Zoé Charlotte Koenig, Eivind Kolås

The western Barents Sea circulation and hydrography: past and present

Conference poster 2023 Eivind Hugaas Kolås, Ragnheid Skogseth, Till Martin Baumann, Ilker Fer, Zoe Koenig, Frank Nilsen

The north pole region as an indicator of the changing arctic ocean: The need for sustaining observations

Academic article 2018 James Morison, Jeremy Wilkinson, Matthew B. Alkire, Frank Nilsen, Igor V Polyakov, William M. Smethie, Peter Schlosser, Frederic Vivier, Antonio Lourenco, Christine Provost, Jacques Pelon, Cecilia Peralta Ferriz, Michael Karcher, Benjamin Rabe, Craig Lee

The Nansen Legacy project invites you to its upcoming international symposium in November 2023

Conference poster 2023 Marit Reigstad, Sebastian Gerland, Tor Eldevik, Erin Kunisch, Ingrid Wiedmann, Arild Sundfjord, Bodil Annikki Ulla Barbro Bluhm, Camille Li, Frank Nilsen, Geir Johnsen, Håvard Hansen, Kai Håkon Christensen, Marius Årthun, Martin Ludvigsen, Matthias Forwick, Melissa Chierici, Morten D. Skogen, Øystein Arne Godøy, Randi Brunvær Ingvaldsen, Sissel Jentoft, Tove M. Gabrielsen

The Nansen Legacy project

Lecture 2020 Frank Nilsen

The Mytilus edulis population in Svalbard: how and why

Editorial 2006 Jørgen Berge, Geir Johnsen, Frank Nilsen, Frank Nilsen, Bjørn Gulliksen, Dag Slagstad, Daniela M. Pampanin

The Kongsfjorden transect: seasonal and inter-annual variability in hydrography

Academic chapter 2019 Vigdis Tverberg, Ragnheid Skogseth, Finlo Robert Cottier, Arild Sundfjord, Waldemar Walczowski, Mark E. Inall, Eva Falck, Olga Pavlova, Frank Nilsen

The Atlantification process in Svalbard: a broad view from the SIOS Marine Infrastructure network (ARiS)

Academic chapter 2025 Manuel Bensi, Frank Nilsen, Benedicte Ferré, Ragnheid Skogseth, Mateusz Moskalik, Meri Korhonen, Daniel Ludwig Vogedes, Vedrana Kovacevic, Francesco Paladini de Mendoza, Gianmarco Ingrosso, Leonardo Langone, Patrizia Giordano, Mark Inall, Beatriz Mano, Arild Sundfjord, Allison Michelle Bailey, Øyvind Foss, Malin Hildegard Elisabeth Daase, Laura Castro de la Guardia, Divya David T, Angelika Renner, Estelle Dumont, Oskar Glowacki, Franziska Ogg, Helene Olsen, Knut Ola Dølven, Eleanor Jones

The Atlantic Water flow along the Voring Plateau: Detecting frontal structures in oceanic station time series

Academic article 2007 JEO Nilsen, Frank Nilsen

Temporal and spatial variability of the oceanic front between the Atlantic Water and adjacent water masses north of Svalbard

Conference poster 2024 Stian Vikanes, Frank Nilsen, Ragnheid Skogseth

Supercooled water in an Arctic polynya: observations and modeling

Academic article 2009 Ragnheid Skogseth, Frank Nilsen, LH Smedsrud

Structure and transport of Atlantic water north of Svalbard from observations in summer and fall 2018

Conference lecture 2020 Eivind Kolås, Zoé Charlotte Koenig, Ilker Fer, Frank Nilsen, Marika Marnela

Structure and transport of Atlantic Water north of Svalbard from observations in summer and fall 2018

Academic article 2020 Eivind Kolås, Zoé Charlotte Koenig, Ilker Fer, Frank Nilsen, Marika Marnela

Still Arctic? — The changing Barents Sea

Academic review article 2023 Sebastian Gerland, Randi Brunvær Ingvaldsen, Marit Reigstad, Arild Sundfjord, Bjarte Bogstad, Melissa Chierici, Haakon Hop, Paul E. Renaud, Lars Henrik Smedsrud, Leif Christian Stige, Marius Årthun, Jørgen Berge, Bodil A. Bluhm, Katrine Borgå, Gunnar Bratbak, Dmitry V Divine, Tor Eldevik, Elena Eriksen, Ilker Fer, Agneta Fransson, Rolf Gradinger, Mats A. Granskog, Tore Haug, Katrine Husum, Geir Johnsen, Marius O. Jonassen, Lis Lindal Jørgensen, Svein Kristiansen, Aud Larsen, Vidar S. Lien, Sigrid Lind, Ulf Lindstrøm, Cecilie Mauritzen, Arne Melsom, Sebastian H. Mernild, Malte Müller, Frank Nilsen, Raul Primicerio, Janne E. Søreide, Gro I. van der Meeren, Paul Wassmann

Sjøisens utvikling

Academic chapter 2013 Frank Nilsen, Stein Sandven, Sebastian Gerland

Shelf/fjord exchange driven by coastal-trapped waves in the Arctic

Academic article 2015 Mark E. Inall, Frank Nilsen, Finlo Robert Cottier, Ragnhild Lundmark Daae

Sea-ice thickness variability in Storfjorden, Svalbard

Academic article 2011 Stefan Hendricks, Sebastian Gerland, Lars Henrik Smedsrud, Christian Haas, Andreas Aspmo Pfaffhuber, Frank Nilsen

Sea ice cover in Isfjorden and Hornsund, Svalbard (2000–2014) from remote sensing data

Academic article 2016 Stefan Muckenhuber, Frank Nilsen, Anton Korosov, Stein Sandven

Sea Ice and Oceonography

Academic chapter 2010 M.A. Brandon, F.R. Cottier, Frank Nilsen

Sea ice and Arctic Ocean oceanography

Non-fiction chapter 2017 Finlo Cottier, Michael Steele, Frank Nilsen

Revisiting heat and salt exchange at the ice-ocean interface: Ocean flux and modeling considerations

Academic article 2008 MG McPhee, JH Morison, Frank Nilsen

Recent Sea Level Changes in the Barents Sea: Atmospheric, Thermosteric, and Halosteric Contributions

Conference poster 2023 Bayoumy Mohamed, Frank Nilsen, Ragnheid Skogseth, stine rose

Population genetic structure of the parasitic copepod Lepeophtheirus salmonis throughout the Atlantic

Academic article 2011 Kevin Alan Glover, Åsta Bergmann Stølen, Amber Messmer, Ben F Koop, Ole Torrissen, Frank Nilsen

Polynjaer: Åpne vinduer i det isdekte polhavet

Academic article 2021 Eva Falck, Frank Nilsen, Ragnheid Skogseth

Physical Process Cruise 2018: Cruise Report

Research report 2020 Ilker Fer, Frank Nilsen, Anthony Bosse, Eva Falck, Trygve Olav Fossum, Lars Robert Hole, Zoé Charlotte Koenig, Eivind Kolås, Aleksander Libæk, Ben Lincoln, Martin Ludvigsen, Marika Marnela, Malte Müller, Petter Norgren, Jean Rabault, Andrew Siedl, Ragnheid Skogseth, inga Utkilen

Physical oceanography data from the cruise KH 2018709 with R.V. Kronprins Haakon, 12-24 September 2018

Research report 2019 Ilker Fer, Zoe Charlotte Koenig, Eivind Hugaas Kolås, Eva Falck, Trygve Olav Fossum, Martin Ludvigsen, Marika Marnela, Frank Nilsen, Petter Norgren, Ragnheid Skogseth

Physical oceanography data from the cruise KB 2018616 with R.V. Kristine Bonnevie

Research report 2020 Ilker Fer, Zoé Charlotte Koenig, Anthony Bosse, Eva Falck, Eivind Kolås, Frank Nilsen

Physical Oceanography Data from a Mooring on Spitsbergenbanken in the north-western Barents Sea, September 2018 – November 2019. [Dataset]

Research report 2024 Kjersti Kalhagen, Ilker Fer, Ragnheid Skogseth, Frank Nilsen, Ceslav Czyz

PC-2 Winter Process Cruise (WPC)

Research report 2021 Frank Nilsen, Ilker Fer, Till Martin Baumann, Øyvind Breivik, Ceslav Czyz, Lukas Frank, Kjersti Kalhagen, Zoe Charlotte Koenig, Eivind Hugaas Kolås, Stephan Thomas Kral, Bayoumy Mohamed A. Mabrouk, Tore Mo-Bjørkelund, Malte Müller, Jean Rabault

Ocean temperature oscillations enable reappearance of blue mussels Mytilus edulis in Svalbard after 1000 year absence

Academic article 2005 Jørgen Berge, Geir Johnsen, Frank Nilsen, Bjørn Gulliksen, Dag Slagstad

Ocean Mixing Process Study 2018: Cruise Report

Research report 2020 Ilker Fer, Frank Nilsen, Eva Falck, Anthony Bosse, Zoé Charlotte Koenig, Algot Kristoffer Peterson

Observations of hydrography and downflow of brine-enriched shelf water in the Storfjorden polynya, Svalbard

Academic article 2008 Ragnheid Skogseth, LH Smedsrud, Frank Nilsen, I Fer

Marine heatwaves characteristics in the Barents Sea based on high resolution satellite data (1982–2020)

Academic article 2022 Bayoumy Mohamed, Frank Nilsen, Ragnheid Skogseth

Marine Heatwaves (MHWs) in the Barents Sea: Case Study the 2016 Record MHW

Conference poster 2022 Bayoumy Mohamed, Ragnheid Skogseth, Frank Nilsen

Loss of sea ice during winter north of Svalbard

Academic article 2014 Ingrid Husøy Onarheim, Lars H. Smedsrud, Randi Ingvaldsen, Frank Nilsen

Interannual and Decadal Variability of Sea Surface Temperature and Sea Ice Concentration in the Barents Sea

Academic article 2022 Bayoumy Mohamed, Frank Nilsen, Ragnheid Skogseth

Identification and characterisation of novel SNP markers in Atlantic cod: Evidence for directional selection

Academic article 2008 T Moen, B Hayes, Frank Nilsen, Frank Nilsen, Madjid Delghandi, KT Fjalestad, Svein-Erik Fevolden, PR Berg, S Lien

HE34A-1990 Enhancement of ocean and sea ice insitu observations in the Arctic under the Horizon 2020 project INTAROS.

Conference poster 2020 Agnieszka Beszczynska-Möller, Hanne Sagen, Peter Voss, Mikael K Sejr, Thomas Soltwedel, Truls Johannessen, Marie-Noelle Houssais, Andreas Rogge, Ian Allan, Frank Nilsen, Angelika Renner, Lars H. Smedsrud, Nicholas Roden, Jean-Pierre Gattuso, Laurent Chauvaud, Claudie Marec, Bin Cheng, Andrew Luke King, Christine Provost, Marcel Babin, Mathilde B. Sørensen

Fjord-shelf exchanges controlled by ice and brine production: The interannual variation of Atlantic Water in Isfjorden, Svalbard

Academic article 2008 Frank Nilsen, F.R. Cottier, Ragnheid Skogseth, Sara Mattsson

Environmental status of Svalbard coastscapes and  focal ecosystem components

Conference lecture 2021 Janne Søreide, Vanessa Pitusi, Anna Vader, Børge Damsgård, Frank Nilsen, Ragnheid Skogseth, Amanda Poste, Allison Michelle Bailey, Kit Kovacs, Christian Lydersen, Sebastian Gerland, Sebastien Descamps, Hallvard Strøm, Paul Eric Renaud, Guttorm Christensen, Maria P. Arvnes, Piotr Graczyk, Denis Moiseev, Rakesh Kumar Singh, Simon Bélanger, Josef Elster, Jacek Urbanski, Mateusz Moskalik, Józef Maria Wiktor, Jan Marcin Weslawski

Effects of glacier runoff and wind on surface layer dynamics and Atlantic Water exchange in Kongsfjorden, Svalbard; a model study

Academic article 2017 Arild Sundfjord, Jon Albretsen, Yoshie Kasajima, Ragnheid Skogseth, Jack Kohler, Christopher Nuth, Jofrid Skardhamar, Finlo Robert Cottier, Frank Nilsen, Lars Asplin, Sebastian Gerland, Trond H. Torsvik

Deep Flow Variability Offshore South-West Svalbard (Fram Strait)

Academic article 2019 Manuel Bensi, Vedrana Kovačević, Leonardo Langone, Stefano Aliani, Laura Ursella, Ilona Goszczko, Thomas Soltwedel, Ragnheid Skogseth, Frank Nilsen, Davide Deponte, Paolo Mansutti, Roberto Laterza, Michele Rebesco, Leonardo Rui, Renata Giulia Lucchi, Anna Wåhlin, Angelo Viola, Agnieszka Beszczynska-Möller, Angelo Rubino

Cryosat postlaunch validation study for sea ice 2011-2012 PRODEX Final Report

Research report 2015 Stein Sandven, Marta Zygmuntowska, Kirill Khvorostovsky, Kjell Kloster, Sebastian Gerland, Angelika Renner, Frank Nilsen, Ragnheid Skogseth

CryoSat post-launch validation study for sea ice 2011-2012. Final report

Research report 2015 Stein Sandven, Kjell Kloster, Marta Zygmuntowska, Kirill Khvorostovsky, Sebastian Gerland, Angelika Renner, Frank Nilsen, Ragnheid Skogseid

Creation and tidal advection of a cold salinity front in Storfjorden: 2. Supercooling induced by turbulent mixing of cold water

Academic article 2013 Miles G. McPhee, Ragnheid Skogseth, Frank Nilsen, Lars Henrik Smedsrud

Creation and tidal advection of a cold salinity front in Storfjorden: 1. Polynya dynamics

Academic article 2013 Ragnheid Skogseth, Miles G. McPhee, Frank Nilsen, Lars Henrik Smedsrud

Complex air-ice-sea interplay in a dynamic, rapidly changing Arctic shelf sea: results from multiyear ocean observations from the northern Barents Sea

Conference lecture 2022 Øyvind Lundesgaard, Arild Sundfjord, Sigrid Lind, Frank Nilsen, Angelika Renner

Closing the loop – Approaches to monitoring the state of the Arctic Mediterranean during the International Polar Year 2007-2008

Academic review article 2011 Cecilie Mauritzen, Edmond Hansen, Maria Helena Andersson, Barbara Berx, Agnieszka Beszczynska-Möller, Ingunn Burud, Kai Håkon Christensen, Jens Debernard, Laura de Steur, Paul Dodd, Sebastian Gerland, Øystein Arne Godøy, Bogi Hansen, Stephen Hudson, Frode Høydalsvik, Randi Ingvaldsen, Pål Erik Isachsen, Yoshie Kasajima, Inga Koszalka, Kit Kovacs, Morten Ø. Køltzow, Joseph Henry Lacasce, Craig M. Lee, Thomas Lavergne, Christian Lydersen, Marcel Nicolaus, Frank Nilsen, Ole Andres Nøst, Kjell Arild Orvik, Marit Reigstad, Harald Schyberg, Lena Seuthe, Øystein Skagseth, Jofrid Skardhamar, Ragnheid Skogseth, Ann Sperrevik, Camilla Svensen, Henrik Søiland, Sigurd Henrik Teigen, Vigdis Tverberg, Christian Wexels Riser

Climatic trends of sea surface temperature and sea ice concentration in the Barents Sea

Conference lecture 2021 Bayoumy Mohamed A. Mabrouk, Frank Nilsen, Ragnheid Skogseth

Circulation and exchange in a broad Arctic fjord using glider-based observations

Academic article 2018 Neil J Fraser, Ragnheid Skogseth, Frank Nilsen, Mark E. Inall

Characteristics and trends of Atlantic Water – Polar Water front north of Svalbard 1905-2018

Conference lecture 2019 Marika Marnela, Frank Nilsen, Ragnheid Skogseth

Characterising Marine Heatwaves (MHWs) around the Svalbard Archipelago

Conference lecture 2025 Marianne Williams-Kerslake, Helene Reinertsen Langehaug, Annette Samuelsen, Noel Sebastian Keenlyside, Ragnheid Skogseth, Frank Nilsen, Silvana Gonzalez

Calving rates at tidewater glaciers vary strongly with ocean temperature

Academic article 2015 Adrian Luckman, Doug Benn, Finlo Cottier, Suzanne Bevan, Frank Nilsen, Mark Inall

Barotropic instability in the West Spitsbergen Current

Academic article 2010 Sigurd Henrik Teigen, Frank Nilsen, Bjørn Gjevik

Baroclinic instability in the West Spitsbergen Current

Academic article 2011 Sigurd Henrik Teigen, Frank Nilsen, Ragnheid Skogseth, Bjørn Gjevik, A. Beszczynska-Möller

Atlantic Water properties, transport, and water mass transformation north of Svalbard from one-year-long mooring observations

Conference lecture 2021 Zoe Charlotte Koenig, Kjersti Kalhagen, Eivind Hugaas Kolås, Ilker Fer, Frank Nilsen, Finlo Robert Cottier

Atlantic water north of Svalbard 1899-2018

Conference lecture 2020 Marika Marnela, Frank Nilsen, Ragnheid Skogseth, Kjersti Kalhagen

Arven etter Nansen

Conference lecture 2019 Frank Nilsen

ArcTiCA: Arctic tidal constituents atlas

Academic article 2024 M.G. Hart-Davis, S.L. Howard, R.D. Ray, O.B. Andersen, L. Padman, Frank Nilsen, D. Dettmering

Arctic fjords: a review of the oceanographic environment and dominant physical processes

Academic article 2010 Finlo R. Cottier, Frank Nilsen, Ragnheid Skogseth, V. Tverberg, Jofrid Skardhamar, H Svendsen

Advection of Atlantic Water to the western and northern Svalbard shelf since 17,500 cal yr BP

Academic article 2007 Marta Slubowska-Woldengen, Martha Slubowska, T.L. Rasmussen, Nalan Koc, D Klitgaard-Kristensen, Frank Nilsen, Anders Solheim

Adaptive Sampling of Surface Fronts in the Arctic Using an Autonomous Underwater Vehicle

Academic article 2021 Trygve Olav Fossum, Petter Norgren, Ilker Fer, Frank Nilsen, Zoe Charlotte Koenig, Martin Ludvigsen

A simple shelf circulation model: Intrusion of Atlantic water on the West Spitsbergen Shelf

Academic article 2016 Frank Nilsen, Ragnheid Skogseth, Juni Vaardal-Lunde, Mark Inall