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Survey of whole air data from the second airborne Biomass Burning and Lightning Experiment using principal component analysis

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1928/13066

Survey of whole air data from the second airborne Biomass Burning and Lightning Experiment using principal component analysis

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dc.contributor.author Smith, Felisa, A.
dc.contributor.author Choi, Yunsoo
dc.contributor.author Elliott, Scott
dc.contributor.author Simpson, Isobel J.
dc.contributor.author Blake, Donald R.
dc.contributor.author Colman, Jonah J.
dc.contributor.author Dubey, Manvendra K.
dc.contributor.author Meinardi, Simone
dc.contributor.author Rowland, F. Sherwood
dc.contributor.author Shirai, Tomoko
dc.date.accessioned 2011-08-23T23:52:57Z
dc.date.available 2011-08-23T23:52:57Z
dc.date.issued 2003-03
dc.identifier.citation JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 108, NO. D5, 4163, doi:10.1029/2002JD002841, 2003 en_US
dc.identifier.issn 0148-0227
dc.identifier.uri http://hdl.handle.net/1928/13066
dc.description.abstract Hydrocarbon and halocarbon measurements collected during the second airborne Biomass Burning and Lightning Experiment (BIBLE-B) were subjected to a principal component analysis (PCA), to test the capability for identifying intercorrelated compounds within a large whole air data set. The BIBLE expeditions have sought to quantify and understand the products of burning, electrical discharge, and general atmospheric chemical processes during flights arrayed along the western edge of the Pacific. Principal component analysis was found to offer a compact method for identifying the major modes of composition encountered in the regional whole air data set. Transecting the continental monsoon, urban and industrial tracers (e.g., combustion byproducts, chlorinated methanes and ethanes, xylenes, and longer chain alkanes) dominated the observed variability. Pentane enhancements reflected vehicular emissions. In general, ethyl and propyl nitrate groupings indicated oxidation under nitrogen oxide (NOx) rich conditions and hence city or lightning influences. Over the tropical ocean, methyl nitrate grouped with brominated compounds and sometimes with dimethyl sulfide and methyl iodide. Biomass burning signatures were observed during flights over the Australian continent. Strong indications of wetland anaerobics (methane) or liquefied petroleum gas leakage (propane) were conspicuous by their absence. When all flights were considered together, sources attributable to human activity emerged as the most important. We suggest that factor reductions in general and PCA in particular may soon play a vital role in the analysis of regional whole air data sets, as a complement to more familiar methods. en_US
dc.language.iso en_US en_US
dc.publisher American Geophysical Union en_US
dc.subject whole air samples en_US
dc.subject hydrocarbons en_US
dc.subject halocarbons en_US
dc.subject principal component analysis en_US
dc.subject BIBLE-B en_US
dc.title Survey of whole air data from the second airborne Biomass Burning and Lightning Experiment using principal component analysis en_US
dc.type Article en_US


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