The temperature of the subsurface Atlantic Water in the northern Barents Sea increased rapidly during the late 1990s.

Global warming can signal bad news for the Baltic ecosystem. If the waters of the Baltic get warmer it may instigate low oxygen conditions and massive blooms of cyanobacteria ("blue-green algae").

The Arctic sea ice cover is a sensitive indicator of climate variability and change.

A new study from the Bjerknes Centre explains decadal variations in the oceanic circulation south of Greenland and Iceland. 

A large part of the changes in the warm water flow can be inferred from observations of sea surface height.

A recent study by Bjerknes Centre scientists demonstrates the link between observed fluctuations of atmospheric jet streams and the theoretical concepts that describe why jet streams exist.

The dominating exchange of carbon in the Nordic Seas takes place across the Greenland-Scotland Ridge. Horizontal transport of carbon in the region is almost two orders of magnitude larger than the uptake from the atmosphere in the Nordic Seas.

In a new study published in Ocean Science, Bjerknes Centre scientist Anders Sirevaag and co-authors present results from a 16 day long drift experiment in the central Arctic Ocean in 2008. Compared to the early 1990’s, the measurements from 2008 show that the upper central Arctic contained more freshwater in the summer, but was saltier during winter. This indicates that there has been a transition towards a more seasonal Arctic ice cover, which means that more ice is forming during winter and melting during summer.

A recently published study from the University of Bergen and the Bjerknes Centre indicates that an increase in the strength of the cold northerly winds may increase the transport of warm Atlantic water into the northern sea, and consequently a reduced Arctic sea ice cover.

Model study reveals that future large and episodic volcanic eruptions induce favourable climate condition for more land and oceanic carbon uptake and delay climate change effect.

A new article in Nature Geoscience revises our current understanding of how the dense overflow waters from the Nordic seas are formed.

The world oceans uptake of CO2 will decrease in our century under global warming, but there are big regional differences.

Past environmental conditions can be inferred from fossil pollen and other microfossil assemblages. A new study allows these reconstructions, which provide important evidence for interpreting past climatic conditions, to be assessed statistically.

An expansive megadrought that parched ancient Africa and southern Asia about 16,000 years ago was one of the most intense and far-reaching dry periods in the history of modern humans.

During the period AD 1650-1760, farmers living in Nordfjord were repeatedly forced to apply for tax reductions following damage to farms and farmland caused by snow-avalanches. A new study from the Bjerknes Centre indicates that this period featured the highest snow-avalanche frequency of the last 7000 years.

In a recent study published in Climate of the Past, Carin Andersson and co-workers at the Bjerknes Centre focus on the conflicting trends in reconstructed surface ocean temperatures for the North Atlantic and Norwegian Sea since the last ice age.

Upper ocean properties in the Southeast Pacific show rapid changes with high amplitudes on decadal to centennial time scales. This variability may be linked to the tropical ocean and climate via an intermediate depth “ocean tunnel”.

Grease ice is not described by the climate models, but may play a central role in Arctic sea ice production in the future. A new publication describes grease ice measurements from Svalbard, and predicts the grease ice thickness based on wind and current forcing.

The inflow of warm Atlantic water and the ocean-atmosphere fluxes are of significant importance to the regional ocean climate, as well as for the biomass production and fish distribution in the Barents Sea.

Scientists from the Bjerknes Centre with results that can revise our understanding of past ocean circulation changes.