PLANETE TERRE: Notre adorable foyer
 
Le rôle vital des océans dans le climat de la planète – partie 1 / 2   

HOST: Greetings, caring viewers, to today’s episode of Planet Earth: Our Loving Home, the first of a two-part series, focusing on the deep interconnection between our oceans and the world’s climate.

The experts featured today are Dr. Steve Rintoul, an oceanographer from Australia’s national scientific research body, the Commonwealth Scientific and Industrial Research Organisation and Professor Anders Levermann, a senior researcher at the Potsdam Institute of Climate Impact Research in Germany and the lead author of the Sea Level Change chapter for the coming 5th Assessment Report of the United Nations Intergovernmental Panel on Climate Change.

Oceans cover 71% of the Earth’s surface, contain approximately 97 % of the world’s water,  sustain a diverse array of sea life and play a vital role in regulating our planet’s climate in a multitude of ways – including through thermohaline circulation, also known as the Great Ocean Conveyor.

Dr Rintoul (m): If you think about the globe and what this overturning circulation really looks like, it’s probably easiest to start in the northern part of the Atlantic (Ocean) up near Greenland and Iceland.

Water sinks at the surface there and flows southward through the whole Atlantic basin, until it reaches the Southern Ocean. And then very strong currents  in the Southern Ocean redistribute that water, (and) carry it around the globe, spinning around Antarctica.

That water then passes through the Indian and Pacific Oceans, ultimately returns to the Southern Ocean and gradually warms and becomes lighter again. And then (it) flows back in, northward through the Atlantic Basin in the upper part of the ocean, and that closes the loop.

For more details on the scientists featured on today’s program,
please visit the following websites:
Professor Anders Levermann
www.PIK-Potsdam.de
Dr. Steven Rintoul   
www.CSIRO.au


 
Recherche de toutes les émissions
 
 
Les plus populaires
 PLANETE TERRE, NOTRE FOYER AIMANT Végétalien : la façon la plus rapide de rafraichir la planète – partie 1 / 4
 PLANETE TERRE: NOTRE FOYER AIMANT Dr Rajendra K. Pachauri - réchauffement mondial : l’impact de la production et la consommation carnée sur le changement climatique – partie 1 / 2
 PLANETE TERRE: NOTRE FOYER AIMANT "Changements dans le climat, changements dans nos vies" un message de Greenpeace –Brésil - partie 1 / 2 (en portugais)
 PLANETE TERRE, NOTRE ADORABLE FOYER Sauver les zones arides : CdP10 Convention des Nations Unies contre la désertification - partie 1 / 3
 PLANETE TERRE: NOTRE FOYER AIMANT L’agriculture ahimsa : une agriculture bio sans terre - 1e partie
 PLANETE TERRE, NOTRE FOYER AIMANT Pas besoin d’eau ! La culture sèche en Âu Lạc (Vietnam)
 Growing Fruits and Vegetables in Sand - One Story From Âu Lạc(Vietnam)
 PLANETE TERRE: NOTRE FOYER AIMANT La méthode d’agriculture naturelle de Yoshikazu Kawaguchi – partie 1 / 2 (en japonais)
 LA PLANETE TERRE : NOTRE FOYER AIMANT Le monde enchanté des jardins de plantes indigènes d’Alrie Middlebrook – partie 1 / 2
 PLANETE TERRE : NOTRE FOYER AIMANT Lester Brown parle de la destruction écologique mondiale et de l’imminent effondrement de la civilisation – partie 1 / 2