3 Nov 2013 - 2:30pm to 3:15pm
For years, tiny organic particles in the air we breath have bedeviled climate modelers. Some of these particles are byproducts of human activity; others can be traced to oxidized gas molecules emitted by trees. These particles play a significant role in climate and have the remarkable habit of trapping toxic pollutants and transporting them from industrial regions to the pristine arctic. So far, models have been able to explain at best one-tenth of the organics actually measured in the atmosphere.