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Full-Text Articles in Atmospheric Sciences
Observations Of Greenhouse Gas Isotopologues With Ace-Fts And Waccm, Eric Michael Buzan
Observations Of Greenhouse Gas Isotopologues With Ace-Fts And Waccm, Eric Michael Buzan
Chemistry & Biochemistry Theses & Dissertations
Increases in greenhouse gas concentrations in the atmosphere are the major driver of climate change. Quantifying the sources and sinks of these gases is a major focus of research. Measuring isotopologues, or molecules that differ in isotopic composition, is one useful way of constraining the budget of a molecule as they are highly sensitive to different sources and sinks. However, measurements above the surface have been restricted to a few locations and have only reached the lower stratosphere. Satellite-based remote sensing can achieve nearly global measurement coverage, but so far no satellites have measured isotopologues.
Presented here are measurements of …
Source-Specific Molecular Signatures For Light-Absorbing Organic Aerosols, Amanda Susan Willoughby
Source-Specific Molecular Signatures For Light-Absorbing Organic Aerosols, Amanda Susan Willoughby
Chemistry & Biochemistry Theses & Dissertations
Organic aerosols (OA) are universally regarded as an important component of the atmosphere based on quantitative significance as well as the far-reaching impact they have on global climate forcing and human health. Despite the acknowledged importance, OA amounts and impacts remain the largest uncertainties regarding radiative forcing estimates. Incomplete chemical characterization of aerosol organic matter (OM) and a lack of concrete source apportionment is a major source of this uncertainty. The primary focus of this study is to provide much needed molecular details regarding ambient OA from key emission sources, and establish links between molecular and optical properties.
Complete chemical …