Il seminario è stato organizzato all’interno del Programma di Dottorato in Scienza e Gestione dei Cambiamenti Climatici.
Questo evento è disponibile solo in lingua inglese
Lecturer
Prof. Raymond S. Bradley
Climate System Research Centre, University of Massachusetts, Amherst, U.S.A.
Abstract
Global temperatures have risen by ~1°C since the end of the 19th century. This increase has not been linear, as there have been periods when temperatures were stable for short periods before rising once again. The reasons for these changes in the rate of temperature rise are related to anthropogenic factors (sulphate aerosol pollution versus greenhouse gas inputs to the atmosphere) as well as to natural factors (volcanic eruptions, solar irradiance variations, El Niño/Southern Oscillation [ENSO] fluctuations, etc). 2011 was one of the warmest years on record, and the last decade was the warmest, globally, for many centuries. Extreme events are becoming more common, as insurance claims clearly show. While politicians sit on their hands and do little to help control CO2 emissions, the levels of carbon dioxide and other greenhouse gases in the atmosphere continue to increase. More heat accumulates in the oceans, ocean acidification increases and sea-level keeps rising as glaciers and ice caps melt. This poses significant problems for coastal cities, and especially Venice, where multiple factors exacerbate the difficulty of finding a solution. Global warming is continuing, and associated environmental changes may make matters even worse than previously thought.
Venezia, San Giobbe - San Giobbe, Venezia -
9 Oct 2012
Website Organized by
- Università Ca’ Foscari Venezia