L`HISTOIRE DU CLIMAT AU COURS DU DERNIER CYCLE
PALEOCLIMATOLOGIE ET
ENVIRONNEMENTS TERRESTRES
•Variabilité climatique et
impact sur la végétation
•Changements de végétation
et impact sur le climat
•Changements climatiques et
impact sur les groupes
paléolithiques
Dernier Maximum Glaciaire
Maria Fernanda Sanchez Go
Ecole Pratique des Hautes E
http://www.paleoclimat-ephe
Ruddiman, 2001
Climate is the sum of meteorological phenomena that characterises the mean state of the
atmosphere, i.e. temperature, precipitations, GHG, over 30 years which depends, in turn, on
the dynamics of various components of the climate system (Claussen, 2007)
Climate is a complex system
Hautes latitudes
lost > gain
Energy at 40°N
lost = gain
Basses latitudes
lost < gain
Ocean currents and winds
Counterbalance the
differences
between
high and low
latitudes (p.e. Gulf Stream)
Present-day vegetation distribution
Prentice et al. 1992
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