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The turbulent ocean: technological frontiers, new paradigms, and the emerging Arctic

Professor Ilker Fer

Geophysical Institute, University of Bergen, Norway

Only one human life ago, the ocean below the surface was conceptualized as a calm environment, described by highly simplified laws of motion.

Observations were mainly coarse snapshots. These snapshots missed the scales of ocean flows and their complex interactions. Today our knowledge of the ocean is something else. Ocean motions span from centimeters to hundreds of kilometers and distribute heat, dissolved gasses, salts, nutrients, and pollutants around the globe. Increasingly sophisticated observation methods and our ability to model the motions using computers have improved our description of the mechanisms and processes that set the ocean’s “weather” and ocean’s “mixing”. We know now that small whirls in the turbulent ocean ultimately affect ocean currents, marine ecosystems, and climate. Today we can describe and constrain the distribution and variability of ocean’s mixing. This is due to emerging technologies, including autonomous or remotely piloted underwater vehicles, and advanced sampling methods. A particular example is the role of ocean heat in accelerating sea ice melt in the Arctic.   The ocean is serving us a huge favour – it absorbs heat and greenhouse gases from the atmosphere and buffers the damaging effects at the expense of increasing ocean temperatures, sea level, and acidity. The state of the ocean in turn largely affects the life of humans, animals, and plants, in coastal regions and beyond.

Venue : Uni Dufour

Public talks 2022

How rock weathering sets Earth’s thermostat
Professor Friedhelm von Blanckenburg
GFZ German Research Centre for Geosciences, Potsdam

7 November 2022 - 18h30

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Volcanoes, their eruption and risk management
Professor Steve Sparks
University of Bristol, UK

8 November 2022 - 18h30

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Tiny critters, huge impacts: Ocean microbes, climate, and health
Prof. Kimberly A. Prather
Distinguished Chair in Atmospheric Chemistry, Scripps Institution of Oceanography, University of California, San Diego

10 November 2022 - 18h30

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How can we know anything about the origin of life?
Professor Nick Lane
University College London

11 November 2022 - 18h30

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Lectures moderation
Olivier Dessibourg
Scientific journalist, physicist, mathematician

 

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Previous editions

2021

Le hasard existe-t-il vraiment?

2018

Gravity, l'attraction universelle

2016

La révolution génomique

2014

Les secrets du soleil

2012

Architecture moléculaire

2010

La révolution quantique

2008

Grandes épidémies: le retour ?

2006

[r]évolution climatique ?

2004

Cellules souches et médecine rgénératrice

2002

Aux Portes du Nano-Monde