HR: 10:20h
AN: A22A-01 INVITED     [Abstracts]
TI: Evaluating NOx emissions, and emissions changes, using instrumented aircraft
AU: * Ryerson, T B
EM: thomas.b.ryerson@noaa.gov
AF: NOAA Aeronomy Laboratory, R/AL 7 325 Broadway, Boulder, CO 80305 United States
AB: The location, strength, and timing of anthropogenic NOx emissions strongly influences particulate matter and ozone formation in the continental boundary layer. Ambient measurements using instrumented aircraft will be analyzed to better quantify NOx source strength and variability on short and medium time scales. Daytime emissions from urban areas and power plants are routinely variable on time scales of hours to days and show occasional dramatic changes of 50% or more, with corresponding effects on secondary photochemistry as a result. Observations of the influence of nocturnal emissions of NOx from anthropogenic sources on secondary product formation will also be discussed.
DE: 0322 Constituent sources and sinks
DE: 0345 Pollution--urban and regional (0305)
DE: 0365 Troposphere--composition and chemistry
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting