Receptor modeling of globally circulating airborne particles collected at Mauna Loa Observatory, Hawaii

Miscellaneous · Fri Jan 01 00:00:00 EST 1988

OSTI ID:6873641

Hermann, D M

Weekly airborne particle samples were collected at Mauna Loa Observatory (MLO), Hawaii from February 1979 through May 1985. Receptor models were used to identify sources of airborne particles at MLO, determine compositions of particles from these sources, and assess the relative impacts of them. Major sources of ambient particles at MLO include Asian continental material, oceanic biological production of Se and SO{sub 4} species, marine particles, Asian anthropogenic material, local volcanic emissions, and basalt. Source composition profiles were developed for each component. The Asian continental component represents particles transported from Eastern Asia to the North Pacific, and the component consists of crustal material contaminated by anthropogenic emissions. To account for variations in the relative strengths of anthropogenic and crustal sources, a separate Asian anthropogenic component was also developed. During the dust season, Asian continental material accounts for 80% of total suspended particulate material (TSP) at MLO, oceanic productions of Se and SO{sub 4} 11%, marine particles 2.8%, basalt 1.9%, volcanic emissions 1.7%, and Asian anthropogenic material in excess of Asian continental material 3.2%. During the clean season, the oceanic biological production of Se and SO{sub 4} contributes 62% of TSP at MLO. Continental material contributes 22%, marine particles 6.4%, basalt 2.7%, volcanic emissions 2.4%, and anthropogenic materials in excess of continental material 4.3%.

• Research Organization: Maryland Univ., College Park, MD (USA)
• OSTI ID: 6873641
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
HAWAII
AIR POLLUTION
PARTICULATES
POLLUTION SOURCES
MATHEMATICAL MODELS
SELENIUM
SULFATES
AIR POLLUTION MONITORING
ECOLOGICAL CONCENTRATION
ENVIRONMENTAL TRANSPORT
SEASONAL VARIATIONS
VOLCANOES
ELEMENTS
FEDERAL REGION IX
MASS TRANSFER
NORTH AMERICA
OXYGEN COMPOUNDS
PARTICLES
POLLUTION
SEMIMETALS
SULFUR COMPOUNDS
USA
VARIATIONS
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)