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Iselin Medhaug

Associate Professor
NORCE, Uni Research Klima

Climate dynamics - North Atlantic climate variability, Atlantic ocean circulation, multidecadal variability, meridional heat transport, coupled climate models, natural climate variability

Geof 230 (meteorological part) - Physical-biological coupling in marine ecosystems (fall 2011 and 2012)

Geof 110 - Introduction to Atmosphere-Ocean dynamics (teaching assistant spring 2014)

Academic article
  • Show author(s) 2021. The vulnerability of lakes to climate change along an altitudinal gradient. Communications Earth & Environment.
  • Show author(s) 2016. Improving together: Better science writing through peer learning. Hydrology and Earth System Sciences. 2965-2973.
  • Show author(s) 2015. Global and regional surface cooling in a warming climate: a multi-model analysis. Climate Dynamics.
  • Show author(s) 2014. The Atlantic multidecadal oscillation: its manifestations and impacts with special emphasis on the Atlantic region north of 60°N. Journal of Marine Systems. 117-130.
  • Show author(s) 2013. The Norwegian Earth System Model, NorESM1-M - Part 2: Climate response and scenario projections. Geoscientific Model Development. 389-415.
  • Show author(s) 2012. Mechanisms for decadal scale variability in a simulated Atlantic Meridional Overturning Circulation. Climate Dynamics. 77-93.
  • Show author(s) 2012. Arctic/Atlantic exchanges via the Subpolar Gyre. Journal of Climate. 2421-2439.
  • Show author(s) 2011. North Atlantic 20th century multidecadal variability in coupled climate models: Sea surface temperature and ocean overturning circulation. Ocean Science. 389-404.
  • Show author(s) 2009. UV radiation and skin cancer in Norway. Journal of Photochemistry and Photobiology. B: Biology. 232-241.
Lecture
  • Show author(s) 2017. Experiences from the Norwegian PhD research school and SiU partnership between UiB, UWash, MIT, UMass, and MUN.
  • Show author(s) 2014. The Atlantic Multidecadal Oscillation and its biological impacts.
  • Show author(s) 2014. The Atlantic Multidecadal Oscillation and its biologial impacts.
  • Show author(s) 2013. Atlantic Multidecadal Variability: its manifestations and impacts with special emphasis on the region north of 60 deg. N.
Popular scientific lecture
  • Show author(s) 2013. Kan kalde vinder fra Arktis gi varmere hav?
  • Show author(s) 2010. Vil Golfstrømmen stoppe?
Academic lecture
  • Show author(s) 2014. Global and regional surface cooling in a warming climate; a multi-model analysis.
  • Show author(s) 2013. Surface exchange between subpolar and subtropical North Atlantic using virtual drifters.
  • Show author(s) 2013. Simulated and reconstructed Atlantic gyre circulation and its relationship with the North Atlantic Oscillation during the past 600 years.
  • Show author(s) 2013. A tour of the North Atlantic through the eyes of a "float".
  • Show author(s) 2013. A Lagrangian view of the North Atlantic surface circulation and heat transport in the Bergen Climate Model.
  • Show author(s) 2012. The variability of the Atlantic Meridional Overturning Circulation - The Nordic Seas in a new perspective.
  • Show author(s) 2012. Mechanisms for decadal scale variability in the North Atlantic Ocean circulation in the Bergen Climate Model (talk).
  • Show author(s) 2012. Global cooling in a warming climate.
  • Show author(s) 2012. Atlantic Ocean circulation - Changing the focus from overturning to gyre.
  • Show author(s) 2011. Role of the Southern Ocean for Atlantic Meridional Overturning Circulation (AMOC).
  • Show author(s) 2011. Mechanisms for decadal scale variability in the North Atlantic Ocean circulation in the Bergen Climate Model.
  • Show author(s) 2010. Variability in Northern Deep Water Masses on Decadal scale.
  • Show author(s) 2010. Sources and sinks for heat and salt in the Arctic Mediterranean via exchanges at the Greenland-Scotland Ridge.
  • Show author(s) 2010. Open-ocean Deep Convection in Climate Models.
  • Show author(s) 2010. Mechanisms for AMOC variability in the modelled pre-industrial climate.
  • Show author(s) 2010. Mechanisms for AMOC variability in pre-industrial climate in BCM.
  • Show author(s) 2010. Distribution of the Northern Water Mass Formation completing the Atlantic Meridional Overturning Circulation.
  • Show author(s) 2010. Atlantic meridional overturning circulation.
  • Show author(s) 2009. North Atlantic 20th century climate variability in coupled climate models.
  • Show author(s) 2009. Measured and modelled UV-radiation in Norway.
  • Show author(s) 2008. Measured and modelled UV radiation in Norway.
Doctoral dissertation
  • Show author(s) 2011. North Atlantic multidecadal variability in coupled climate models – Mechanisms and responses.
Interview
  • Show author(s) 2013. Merk deg disse ansiktene med det samme. De tilhører unge mennesker som vil.
  • Show author(s) 2013. 40 klimaforskere inntar Nyksund.
  • Show author(s) 2012. Temperaturfall tross global oppvarming.
  • Show author(s) 2012. Kald vind gjør Norskehavet varmt.
  • Show author(s) 2012. Kald vind gjør Norskehavet varmt.
  • Show author(s) 2011. Kalde vinder, varmere vann.
Poster
  • Show author(s) 2012. Mechanisms for decadal scale variability in the North Atlantic Ocean circulation in the Bergen Climate Model.
  • Show author(s) 2010. Northern Water Mass Transformation.
  • Show author(s) 2008. UV-radiation and skin cancer in Norway.
  • Show author(s) 2008. Reconstruction of UV-radiation in Norway.

More information in national current research information system (CRIStin)

In press: 

L.R. Vinnå, I. Medhaug, M. Schmid, and D. Bouffard. The vulnerability of lakes to climate change along an altitudinal gradient. Communications Earth & Environment

 

Peer reviewed articles:

M.B. Stolpe, K. Cowtan, I. Medhaug, and R. Knutti (2020) Pacific Variability Reconciles Observed and Modelled Global Mean Temperature Increase since 1950. Climate Dynamics doi: 10.1007/s00382-020-05493-y

A.L. Merrifield, L. Brunner, R. Lorenz, I. Medhaug, and R. Knutti (2020) A weighting scheme to incorporate large ensembles in multi-model ensemble projections. Earth System Dynamics, 11: 807-834, doi: 10.5194/esd-11-807-2020

M.B. Stolpe, I. Medhaug, U. Beyerle, and R. Knutti (2019) Weak Dependence of Future Global Mean Warming on the Background Climate State. Climate Dynamics, 53: 5079-5099, doi: 10.1007/s00382-019-04849-3

M.B. Stolpe, I. Medhaug, J. Sedlacek, and R. Knutti (2018) Multidecadal Variability in Global Surface Temperatures Related to the Atlantic Meridional Overturning Circulation. Journal of Climate, 31: 2889-2906 doi: 10.1175/JCLI-D-17-0444.1

M.B. Stolpe, I. Medhaug and R. Knutti (2017) Contribution of Atlantic and Pacific Multidecadal Variability to Twentieth Century Temperature Changes. Journal of Climate, 30: 6279-6295, doi: 10.1175/JCLI-D-16-0803.1

I. Medhaug, M.B. Stolpe, E.M. Fischer and R. Knutti (2017) Reconciling controversies about the 'global warming hiatus'. Nature, 545: 41-47, doi:10.1038/nature22315

M.A. Stiller-Reeve, C. Heuzé, W.T. Ball, R.H. White, G. Messori, K. van der Wiel, I. Medhaug, A. Eckes, A. O'Callaghann, M.J. Newland, S. Williams, M. Kasoar, H.E. Wittmeier, and V. Kumer (2016) Improving together: better science writing through peer learning. Hydrology and Earth System Sciences, 20: 2965-2973, doi:10.5194/hess-20-2965-2016

I. Medhaug and H. Drange (2016) Global and regional surface cooling in a warming climate - a multi-model analysis. Climate Dynamics, 46: 3899-3920, doi:10.1007/s00382-015-2811-y (open access)

K. Drinkwater, M. Miles, I. Medhaug, O.H. Otterå, T. Kristiansen, S. Sundby and Y. Gao (2014) The Atlantic Multidecadal Oscillation: its manifestations and impacts with special emphasis on the region north of 60N. Journal of Marine Systems, 133: 117-130, doi:10.1016/j.jmarsys.2013.11.001.

T. Iversen, M. Bentsen, I. Bethke, J.B. Debernard, A. Kirkevåg, Ø. Seland, H. Drange, J.E. Kristjansson, I. Medhaug, M. Sand, I.A. Seierstad (2013) The Norwegian Earth System Model, NorESM1-M. Part 2: Climate Response and Scenario Projections. Geoscientific Model Development, 6:389-415, doi:10.5194/gmd-6-389-2013 (open access)

H.R. Langehaug, I. Medhaug, T. Eldevik and O.H. Otterå (2012) Arctic/Atlantic exchanges via the Subpolar Gyre. Journal of Climate, 25:2421-2439, doi: 10.1175/JCLI-D-11-00085.1. [pdf]

I. Medhaug, H.R. Langehaug, T. Eldevik, T. Furevik and M. Bentsen (2012) Mechanisms for decadal scale variability in a simulated Atlantic Meridional Overturning Circulation. Climate Dynamics, 39(1-2):77-93, doi: 10.1007/s00382-011-1124-z (open access)

I. Medhaug and T. Furevik (2011) North Atlantic 20th century multidecadal variability in coupled climate models: Sea surface temperature and ocean overturning circulation. Ocean Science, 7:389-404, doi:10.5194/os-7-389-2011 (open access)

I. Medhaug, J.A. Olseth and J. Reuder (2009) UV radiation and skin cancer in Norway. J. Photochemistry and Photobiology - B: Biology, 96:232-241, doi:10.1016/j.photobiol.2009.06.011. [pdf]

PhD thesis:

I. Medhaug North Atlantic multidecadal variability in coupled climate models - Mechanisms and responses. Bergen: Geophysical Institute, University of Bergen, 2011, 137 pp.

Master's thesis:

I. Medhaug Reconstruction of UV-radiation and its potential implications on development of skin cancer. Bergen: Geophysical Institute, University of Bergen 2007 106 pp.

 

Conference and scientific meeting contributions:

Presentations

Medhaug, I, HR Langehaug, T Eldevik, OH Otterå, T Furevik, and M Bentsen
Mechanisms for decadal scale variability in the North Atlantic Ocean circulation in the Bergen Climate Model. European Geoscience Union (EGU), General Assembly 2012; Vienna, Austria, 2012, EGU2012-5921.

Medhaug, I. The variability of the Atlantic Meridional Overturning Circulation - The Nordic Seas in a new perspective. Imperial College London - Space and Atmospheric physics meeting, London, UK, 12.03.2012.

Medhaug, I The role of the southern ocean for the Atlantic Meridional Overturning
Circulation (AMOC). Trial lecture for the degree of PhD, University of Bergen, Norway, 21.03.2011.

Medhaug, I, and HR Langehaug Mechanisms for AMOC variability in the modelled preindustrial climate; POCAHONTAS – BIAC symposium on “Polar ocean-atmosphere circulation and processes”, Rosendal, Norway, 20-23.09.2010.

Medhaug, I Mechanisms for AMOC variability in pre-industrial climate in BCM; NorClim annual meeting, Voss, Norway, 2-3.09.2010.

Medhaug, I. and Furevik, T. North Atlantic 20th Century Climate Variability in Coupled Climate Models. MOCA-09; Montreal, Canada, 19-29.07.2009

Olseth, J. A., I. Medhaug, J. Reuder, B.B. Sjølingstad, O. Sætre, Deyang and B. Johnsen. Measured and modelled UV-radiation in Norway; COST726 Final Seminar, 13-14 May 2009, Warsaw, Poland.

Olseth, J.A., I. Medhaug, J. Reuder, B.B. Sjølingstad and O. Sætre. Measured and modelled UV radiation in Norway; The Nordic Meteorology Conference; 02.06-2008-06.06-2008, Reykjavik, Iceland.

Olseth, J.A, I. Medhaug, J. Reuder, B.B. Sjølingstad, and O. Sætre. UV-radiation in Norway: Measurements, reconstructions and applications. UV Conference ”One century of UV radiation research”; 18.09.2007-20.09.2007, Davos, Switzerland.

Medhaug, I. Reconstruction of UV radiation and its potential implications on development of skin cancer. Workshop at Cost 726 ”Long trem changes and climatology of UV radiation over Europe” MCM9-meeting; 17.09.2007, Davos, Switzerland.

Olseth, J.A., I. Medhaug, J. Reuder, B.B. Sjølingstad and O. Sætre. UV-radiation: Examples from Bergen on measurements, Reconstructions and Applications. Workshop at Cost 726 ”Long term changes and climatology of UV radiation over Europe” MCM8-meeting; 29.03.2007-30.03.2007, Budapest, Hungary.

 

Posters

Medhaug, I. Climate variability in the North Atlantic in the 20th century; Climate teleconnection between high and latitudes - Summer school, NZC-IAP Chinese Academy of Science, 27.-30.10-2008, Beijing, China.

Medhaug, I., J.A. Olseth and J. Reuder. UV-radiation and skin cancer in Norway.: The Nordic Meteorology Conference; 02.-06.06-2008, Reykjavik, Iceland.

Medhaug, I., J. A. Olseth and J. Reuder. Reconstruction of UV-radiation in Norway. European Geoscience Union (EGU), General Assembly 2008; 13.-18.4-2008, Vienna, Austria.

NorClim - Climate of Norway and the Arctic in the 21st Century

IMMUNITY - Integrated model-data approach for understanding multidecadal natural climate variability