The Aitken mode represents newly formed particles, while the accumulation mode represents particles with long residence times. PM10 consists of these submicron particles and a coarse mode. The coarse mode represents particles from wind blown dust, sea salt, and anthropogenic emissions. Particle coagulation, condensational growth, and new particle formation are included as is the emission of particles from sources. Results from a preliminary set of model calculations will be presented.
Risk analysis comprises assessment, valuation, and communication of a hazard.
This study focuses upon communication of a hazard between the suppliers of severe weather messages and the consumers of the messages. The case study is the Cherokee County Tornado on Palm Sunday, 1994. A survey of residents affected by and living near the Cherokee County Tornado revealed problems in the delivery of severe weather messages from the National Weather Service to residents. The Cherokee County Tornado exemplified blockages in the delivery of severe weather statements from the National Weather Service to residents. The conclusion is that a 50 percent or 80 percent chance of a tornado is a powerful statement in arousing people.