Carissimi Associati SGI,
Carissimi Soci Società Associate,
su indicazione del Prof. Rodolfo Carosi (Università di Torino e Presidente SGI) vi segnaliamo l'ultimo podcast di Geology Bites (Conversations about geology with researchers making key contributions to our understanding of the Earth and the Solar System):
Isabel Montañez (Distinguished Professor in the Department of Earth and Planetary Sciences at the University of California, Davis) - Using the Late Paleozoic Ice Age as an Analog for Present-Day Climate
Di seguito troverete il messaggio dell'ideatore, Oliver Strimpel, e il link al sito web di Geology Bites.
Cordiali saluti,
La Segreteria
Hello, listeners,
In this episode, Isabel Montañez, Distinguished Professor at the University of California, Davis, talks about how she adapted our present day Earth-system models to fit the boundary conditions of the late Paleozoic ice age. She chose that period because in some key respects (historically low but rising atmospheric CO2, continental ice sheets) it was similar to the present day. She then used that model to test the sensitivities of the various Earth system parameters to changes in atmospheric CO2 or changing ecosystems.
What struck me is that many aspects of the climate system appeared to function then much as they do now, even though the continental configuration was the opposite of what we have now — a single supercontinent (Pangea) vs. separate distributed continents. The modelling also suggested that the increasing CO2 we're experiencing now could lead to some of the seafloor becoming anoxic or to vastly increased runoff as a result of changed precipitation patterns.
I hope you find it interesting.
Oliver
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