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In our laboratory, we have developed the analytical capability to measure stable isotope variations at ultra-high precision (0.04 parts per thousand) in sulfur (34S/32S, 33S/32S), oxygen (18O/16O, 17O/16O), carbon (13C/12C), and nitrogen (15N/14N). Using this high precision as a diagnostic tracer, we have developed experimental programs in widely varying research fields which include atmospheric chemistry, the physical chemistry of photochemical reactions, early solar system history, paleo atmospheres, and the origin of life and of the solar system.
Our group employs stable isotope measurements to delineate the fates of different atmospheric species. From combined laboratory photochemistry experiments and field (tropo- and stratospheric) measurements, we are able to determine specific reaction pathways. High altitude samples are taken from aircraft, balloons and rockets to as high as 60 km. Our research sampling focuses upon studying the global impact by many important atmospheric molecules. These species include carbon dioxide, nitrous oxide, carbon monoxide, ozone, and sulfate (acid rain). These samples are collected throughout the world and include our work at the South Pole and in tropical rainforests. Hemispheric aerosol transport is also studied.
In our laboratory, we have developed the analytical capability to measure stable isotope variations at ultra-high precision (0.04 parts per thousand) in sulfur (34S/32S, 33S/32S), oxygen (18O/16O, 17O/16O), carbon (13C/12C), and nitrogen (15N/14N). Using this high precision as a diagnostic tracer, we have developed experimental programs in widely varying research fields which include atmospheric chemistry, the physical chemistry of photochemical reactions, early solar system history, paleo atmospheres, and the origin of life and of the solar system.
Our group employs stable isotope measurements to delineate the fates of different atmospheric species. From combined laboratory photochemistry experiments and field (tropo- and stratospheric) measurements, we are able to determine specific reaction pathways. High altitude samples are taken from aircraft, balloons and rockets to as high as 60 km. Our research sampling focuses upon studying the global impact by many important atmospheric molecules. These species include carbon dioxide, nitrous oxide, carbon monoxide, ozone, and sulfate (acid rain). These samples are collected throughout the world and include our work at the South Pole and in tropical rainforests. Hemispheric aerosol transport is also studied.
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Research in Cold and Arid Regions (2024)
APPLIED GEOCHEMISTRY (2024): 105860
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MINERALOGY AND PETROLOGYno. 2 (2023): 373-386
GEOPHYSICAL RESEARCH LETTERSno. 2 (2022)
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