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Journal article
Transport of sulfur dioxide from the Asian Pacific Rim to the North Pacific troposphere
Journal of Geophysical Research, Washington, DC, v 102(D23), pp 28489-28499
01 Jan 1997
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The NASA Pacific Exploratory Mission over the Western Pacific Ocean (PEM-West B) field experiment provided an opportunity to study sulfur dioxide (SO sub(2) ) in the troposphere over the western Pacific Ocean from the tropics to 60 degrees N during February-March 1993. The large suite of chemical and physical measurements yielded as complex matrix in which to understand the distribution of sulfur dioxide over the western Pacific region. In contrast to the late summer period of Pacific Exploratory Mission-West A (PEM-West A) (1991) over this same area, SO sub(2) showed little increase with altitude, and concentrations were much lower in the free troposphere than during the PEM-West B period. Volcanic impacts on the upper troposphere were again found as a result of deep convection in the tropics. Extensive emission of SO sub(2) from the Pacific Rim land masses were primarily observed in the lower well-mixed part of the boundary layer but also in the upper part of the boundary layer. Analyses of the SO sub(2) data with aerosol sulfate, beryllium-7, and lead-210 indicated that SO sub(2) contributed to half or more of the observed total oxidized sulfur (SO sub(2) plus aerosol sulfate) in free tropospheric air. The combined data set suggests that SO sub(2) above 8.5 km is transported from the surface but with aerosol sulfate being removed more effectively than SO sub(2) . Cloud processing and rain appeared to be responsible for lower SO sub(2) levels between 3 and 8.5 km than above or below this region.
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Details
- Title
- Transport of sulfur dioxide from the Asian Pacific Rim to the North Pacific troposphere
- Creators
- Donald ThorntonAlan BandyByron BlomquistRobert TalbotJack Dibb
- Publication Details
- Journal of Geophysical Research, Washington, DC, v 102(D23), pp 28489-28499
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- [Retired Faculty]
- Web of Science ID
- WOS:000071162700037
- Scopus ID
- 2-s2.0-0001540974
- Other Identifier
- 991019168552304721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Meteorology & Atmospheric Sciences