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Atmosphere, atmosphere

Series : Image and science : doubts about knowledge

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  00:26:00  2001  Color  Sound

The earth's temperature is going up, but is this due to natural warming or thoughtless human intervention? According to Gérard Mégie, an expert on the ozone layer, scientists now believe it is almost certain that humans are responsible for the greenhouse effect.In order to investigate climate change, researchers obtain core sample of ice from the earth's major glaciers, from which they can read off yearly climate fluctuations. Core samples obtained in Antarctica, which can reach a length of three km, reveal 400,000 years of climate history. Models for predicting future climates are still inexact, but one thing is certain: the percentage of carbon gases in the atmosphere has reached its highest level in 400,000 years.

Associate producer : Gédéon Programmes
Participation : CNC
 
Identification
Audiovisual processPrises de vues réelles.Utilisation d'extraits de films (station russe Vostok en Antarctique) et de photos d'archives.
Interventions en son direct et commentaire voix off. Musique.
Date of broadcasting2001 (La Cinquième)
(ONLINE)
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Discipline

Earth Sciences

Places  

Antarctica

Technical Sheet
Number964
PublicTeaching ; Large audience
Original Supportvideo Beta SP
VersionFrench
Delivery supportBeta SP
Ark Identifier