Supports research to measure and model the concentration and distribution of gases and aerosols in the lower and middle atmosphere. Also supports research on the chemical reactions among atmospheric species; the sources and sinks of important trace gases and aerosols; the aqueous-phase atmospheric chemistry; the transport of gases and aerosols throughout the atmosphere; and the improved methods for measuring the concentrations of trace species and their fluxes into and out of the atmosphere. To appreciate …showed first 75 words of 471 total…

…showed last 75 words of 471 total…by climate variations that modify disease vectors and effect carriers of infectious diseases. Moreover, both the occurrence of skin cancer and the vigor of immune systems appear to be related to the intensity of ultraviolet radiation reaching the Earth's surface and hence are subject to variations in atmospheric chemical constituents. The responsibilities of the atmospheric sciences include the advance of fundamental understanding, the prediction of weather and climate change, and the identification of environmental threats.