Ocean - sea ice - atmosphere teleconnections between the Southern Ocean and North Atlantic during the Holocene (OCTEL)

The OCTEL project aims to explore the ocean, sea-ice and atmosphere interactions both in the Southern Ocean and the northern North Atlantic in order to assess the manifestation of interhemispheric teleconnections and their influence on climate during last 11 700 years (the Holocene) with a special focus on the last 2 000 years.

The joint Indo-Norwegian research project OCTEL is funded by the Research Council of Norway and Ministry of Earth Sciences of the Republic of India.

In the project, we
1) Generate new quantitative diatom-based sea surface temperature and sea-ice reconstructions from marine sediment cores from the Southern Ocean for the last 10 000 years, and from Svalbard for the last 2000 years.
2) Analyse the relation of oceanic and atmospheric variability both in the southern and northern hemispheres.
3) Assess the existence and magnitude of teleconnections between the Southern Ocean and the North Atlantic on different time-scales.
4) Model the dynamics of the ocean-sea ice-atmosphere system and teleconnections in the Atlantic Ocean.
5) Inform policy makers and the public of the project's results on the impact of regional climate changes to global climate change through teleconnections.

The project will contribute to increased knowledge on how the ocean–sea-ice–atmosphere systems of the Northern and Southern hemispheres are coupled together at different time-scales. This new knowledge will improve the global climate models and enable more precise climate projections for the future, which will be beneficial to society’s adaptation strategies.