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Global warming transforms the Arctic cloud cover

The Arctic is one of the cloudiest regions on the Earth. White carpet of clouds typically covers the Arctic during three quarters of year. In summertime, clouds reflect sunlight helping to keep the Arctic cool. In winter time, they capture and backscatter heat making the Arctic warmer than it could be under a clear sky. [img_assist|nid=93550|title=|desc=Figure 1. Historical variations since 1930 of the observed convective cloud fraction at the Wrangel Island station (redrawn from Chernokulsky and Esau, 2019).

Key indicators of Arctic climate change: 1971–2017

Key observational indicators of climate change in the Arctic, most spanning a 47 year period (1971–2017) demonstrate fundamental changes among nine key elements of the Arctic system. A new study finds that, coherent with increasing air temperature, there is an intensification of the hydrological cycle, evident from increases in humidity, precipitation, river discharge, glacier equilibrium line altitude and land ice wastage. Director at the Nansen Center, Sebastian H.

Investigating the possible causes for the recent warming hiatus

The IPCC stated in their latest assessment report that the global warming hiatus was attributable in roughly equal measure to natural variability and reduced trends in external forcing. A detailed study involving over 2000 years of model simulations has demonstrated that according to the Norwegian Earth System Model, there is no evidence that forcings errors play a significant role in explaining the hiatus. These results has been addressed in two papers lead by Nansen Center scientists Drs. Stephen Outten and Peter Thorne recently published in Journal of Geophysical Research.

Nansensenteret bidrar til ny rapport "Klima i Norge 2100"

Klima i Norge 2100Vann vil være en stor utfordring for Norge i framtiden, viser rapporten «Klima i Norge 2100», som ble presentert på Miljødirektoratet sin Klimatilpasningskonferansen i Oslo 22. september.

Summer school announcement; “Shipping in Arctic Water”

 The NVP-Nansen summer school 2013 “Shipping in Arctic Water: The interaction of sea ice, ship technology, climate change, economy and other operational conditions” will be organized in Longyearbyen at Svalbard from 18th to 26th August. 32 international graduate & postgraduate students are selected to participate. The final program for the summer school is attached here to.


First Nansen-Tutu Center publication in Nature; Impact of intensified Indian Ocean winds on mesoscale variability in the Agulhas system

Dr. Björn C. Backeberg at the Nansen-Tutu Center in Cape Town, has published together with Pierrick Penven* and Mathieu Rouault at the MA-RE Institute, University of Cape Town, a paper on Impact of intensified Indian Ocean winds on mesoscale variability in the Agulhas system.

[img_assist|nid=14331|title=|desc=Satellite measurements from the last two decades reveal accelerated eddies moving around Southern Africa.

ACOBAR: Acoustic Technology for Observing the interior of the Arctic Ocean

Developing an integrated ocean monitoring and forecasting system combining acoustic tomography, gliders, measurements and ice-ocean modelling to improve the estimates of the heat, mass and freshwater transport through the Fram Strait.

The large gap in data from the Arctic Ocean introduce severe uncertainties in detection of temperature and salinity changes, understanding of ocean-ice interactions and in modelling of processes and climate. During the International Polar Year from 2007 - 2009 several new instruments and platforms for ocean observations are deployed and the collection of data is significantly enhanced. There is, however, little support and commitment to continue these observations after IPY.

Project Details
Project Deputy Leader at NERSC: 
Hanne Sagen
Coordinating Institute: 
Nansen Environmental and Remote Sensing Center
Project Status: 
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