Kalender

Introduction meeting for new Bjerknes members. Contact the administration for more information.

Date: Friday 13 March 2026

Time: 10:00-12:00

Place:

      In person: Bjerknes lecture room 4020 (Jahnebakken 5, top floor)

      Online: Zoom

Program:

10:00-10:20 RA1: Robinson Hordoir (IMR): Barents Sea atlantification driven by a shift in atmospheric synoptic timescale

10:20-10:40 RA3/RA4: Marianne Williams-Kerslake (NERSC): Can we predict marine heatwaves up to multi-year time scales in the Nordic Seas?

10:40-11:00 RA3: Lukrecia Stulic (University of Bologna): Partitioning uncertainty in Antarctic sea ice projections

11:00- Mingling and Open Agenda (for those who wish to share or discuss) 

*RA stands for Research Area 

This informal discussion space is open to all Bjerknes members and guests.

Please feel free to join us and we welcome contributions from all.

Abstract

The global-scale meridional overturning circulation (MOC) plays an important role in the climate system by transporting heat, salt, nutrients, and other tracers across latitude circles. While waters are near the surface, air-sea fluxes exchange heat, water, carbon, and other tracers between the ocean and atmosphere, influencing weather and climate. Once removed from the surface, many of these tracers are nearly conserved following the flow, thus the MOC is an effective means to transport properties across global scales. Our understanding of the overturning circulation has developed in recent decades from both global and local perspectives. The focus of this talk will be on the local physics that concentrate vertical transports near boundaries, and non-local physics that connect surface forcing with those vertical transports. Idealized models, simple theories, and observations will be used to demonstrate these processes. Basic conservation principles are used to provide insight into the controlling physics and how the overturning in both depth space and density space depends on atmospheric forcing and environmental conditions.

Speaker information

BS, MS 1980, 1982, Mechanical Engineering, Clarkson College of Tech.
PhD 1988, Applied Mathematics, Harvard University
Visiting Scientist National Center for Atmospheric Research, 1988-1990
WHOI, 1990-present
Scientific interests: Application of idealized numerical and theoretical calculations to understanding
mean and low frequency variability of the general ocean circulation. Particular interests include marginal seas, mesoscale variability, Arctic Ocean.

Join Zoom Meeting 
https://uib.zoom.us/j/68304284910?pwd=2IgsDMWHuJlQw3XFHSTo3OoGBsRrhz.1

Meeting ID: 683 0428 4910
Password: 7pwZK4mG

Topic: Modeling the Polar regions - what do we have and what are we missing?

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Save the dates!