Coupled chemistry-climate models are being increasingly used to tackle the problem of understanding the mechanisms for driving changes in past, present and future atmospheric composition. Given the computational overheads of running these types of models the chemical mechanisms which are used are often chosen for their speed of simulation.
Satellite observations offer a powerful source of data to support air quality management, by providing information about air pollutant concentrations, trends, and transport, particularly where no other monitors are available; identification of pollution sources to constrain emissions estimates; and regional characterization of air pollutant distributions to support air monitor siting decisions.
Seminar: Reducing uncertainty in regional climate projection: New challenge for coupled ocean-atmosphere dynamics
Global mean temperature has risen for the past century and is projected to rise even more in response to the increasing atmospheric CO2 concentrations. Precipitation change is of vital importance to societies but precipitation projections are intrinsically challenging as they change sign from one region to another. Recent studies show that in the tropics, radiatively forced changes in precipitation and atmospheric circulation are tightly coupled to spatial patterns of ocean surface warming.
Geophysical Institute and Bjerknes Centre, Univeristy of Bergen, Bergen, Norway
Nansen Environmental and Remote Sensing Center, Bergen , Norway
The most pressing needs in understand climate change are now on the regional and local scale. Although it is well known that global temperatures will increase in the next century, what is more poorly known is how these changes will affect populations on the local scale. Consequently there is a pressing need to bring the predictions of climate models down to scales amenable to policy makers on this level.
Seminar Series: Tracing terrestrial biosphere-atmosphere exchange of CO2 and H2O using stable isotopes
Tracing terrestrial biosphere-atmosphere exchange of CO2 and H2O using stable isotopes
Dr. Lisa R. Welp
Scripps Institution of Oceanography, UC San Diego