Trace Gas Measurements made from Aircraft over North America and China
Abstract
Trace gases O3, CO, SO2, and aerosol optical properties were measured from a small research aircraft for ten summers over the Mid Atlantic region of the United States. The resultant profiles from the surface to about 3000 m altitude have been analyzed to show the role of long-range transport, boundary layer dynamics, convection, and emissions on concentrations and trends. Large, coal-fired power plants in the Ohio River Valley dominate O3 and SO2 concentrations under anti-cyclonic flow, but the contribution from these electricity generating units appears to have decreased over the past three years and pollutant concentrations have fallen, even when interannual variations in meteorology are removed. The same small aircraft package was flown over NE China last spring, and results are contrasted with those from North America.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2005
- Bibcode:
- 2005AGUFM.A42A..06D
- Keywords:
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- 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0345 Pollution: urban and regional (0305;
- 0478;
- 4251);
- 0365 Troposphere: composition and chemistry;
- 0368 Troposphere: constituent transport and chemistry