Research
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Research Interests |
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Our interests lie in the feedbacks between atmospheric chemistry and climate change. We make use of the oxygen isotopic composition of sulfate and nitrate aerosols from aerosol, water, snow and ice core samples to study photochemical oxidation pathways on a variety of time scales. See below for more detailed information about our current and past projects! |
 Photo
by M.G. Hastings |
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Research Tools |
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Laboratory: Our lab consists of a
Dionex 2000 ion chromatograph, Barnstead water purification system, clean
(laminar flow) hood, and a MAT 253 isotope ratio mass spectrometer.
We are also part of the ISOLAB at the University of Washington.
Click on the ISOLAB link
for information on facilities, people, projects, etc.
Global 3D chemical transport modeling (CTM): We use the GEOS-Chem model, a global 3 dimensional model of atmospheric chemistry and transport. We use the model to help interpret our isotope data. In turn, the isotope measurements provide an additional chemical diagnostic, allowing us to improve the model's chemistry. We have two dual processor Linux PCs for model simulations and data analysis. |
 Dionex
2000 Ion Chromatograph |
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 MAT
253 Isotope Ratio Mass Spec. |
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Click on the links below for more detailed descriptions of our research projects!! | ||
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Current ongoing projects: West Antarctic Ice Sheet (WAIS) Divide ice core project Measurements and modeling of Greenland snowpit nitrate D17O Paleoclimate and atmospheric chemistry: calibrating the D17O proxy Investigating acidification mechanisms of Saharan dust aerosols (RODA) Quantifying the influence of metal catalyzed sulfur oxidation on the global sulfur budget | ||
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Examples of past projects: Influence of sea-salt aerosols on the marine boundary layer sulfur budget |
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