Atmospheric composition and kinetic parameters derived from spectroscopic and in situ measurements
The chemistry that occurs in our atmosphere has far reaching implications for the biosphere through oxidation capacities, ultra-voilet absorption and radiative effects. Catalytic stratospheric ozone destruction chemistry combines bromine and chlorine homogeneous and heterogeneous processes to produc...
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ftawi:oai:epic.awi.de:23116 2023-05-15T13:46:50+02:00 Atmospheric composition and kinetic parameters derived from spectroscopic and in situ measurements Schofield, Robyn 2010 https://epic.awi.de/id/eprint/23116/ https://hdl.handle.net/10013/epic.35897 unknown Schofield, R. (2010) Atmospheric composition and kinetic parameters derived from spectroscopic and in situ measurements , Chemistry Department Seminar, Victoria University of Wellington, New ZealandJanuary. . hdl:10013/epic.35897 EPIC3Chemistry Department Seminar, Victoria University of Wellington, New ZealandJanuary., 15 Conference notRev 2010 ftawi 2021-12-24T15:34:31Z The chemistry that occurs in our atmosphere has far reaching implications for the biosphere through oxidation capacities, ultra-voilet absorption and radiative effects. Catalytic stratospheric ozone destruction chemistry combines bromine and chlorine homogeneous and heterogeneous processes to produce the massive ozone losses that result in increased ultra-voilet radiation levels over Antarctica and New Zealand. Large bromine explosions occur in the Antarctic and Arctic boundary layer and have been linked to the biogeochemical cycling of mercury in the polar regions. The affect of aerosol upon cloud microphysical properties is one of the largest uncertainties in ascertaining the future anthropogenic induced climate change. I will discuss some remote sensing spectroscopic methods used and modelling required to retrieve the vertical trace gas profile information and microphysical cloud properties from ground-based instrumentation. I will also discuss how kinetic information can be derived from airborne in-situ ClO measurements made over sunset. The ClOOCl photolysis rate and ClO+ClO <-> ClOOCl equilibrium constant determined in laboratory studies are compared with atmospheric observations. Conference Object Antarc* Antarctic Antarctica Arctic Climate change Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Arctic New Zealand The Antarctic |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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The chemistry that occurs in our atmosphere has far reaching implications for the biosphere through oxidation capacities, ultra-voilet absorption and radiative effects. Catalytic stratospheric ozone destruction chemistry combines bromine and chlorine homogeneous and heterogeneous processes to produce the massive ozone losses that result in increased ultra-voilet radiation levels over Antarctica and New Zealand. Large bromine explosions occur in the Antarctic and Arctic boundary layer and have been linked to the biogeochemical cycling of mercury in the polar regions. The affect of aerosol upon cloud microphysical properties is one of the largest uncertainties in ascertaining the future anthropogenic induced climate change. I will discuss some remote sensing spectroscopic methods used and modelling required to retrieve the vertical trace gas profile information and microphysical cloud properties from ground-based instrumentation. I will also discuss how kinetic information can be derived from airborne in-situ ClO measurements made over sunset. The ClOOCl photolysis rate and ClO+ClO <-> ClOOCl equilibrium constant determined in laboratory studies are compared with atmospheric observations. |
format |
Conference Object |
author |
Schofield, Robyn |
spellingShingle |
Schofield, Robyn Atmospheric composition and kinetic parameters derived from spectroscopic and in situ measurements |
author_facet |
Schofield, Robyn |
author_sort |
Schofield, Robyn |
title |
Atmospheric composition and kinetic parameters derived from spectroscopic and in situ measurements |
title_short |
Atmospheric composition and kinetic parameters derived from spectroscopic and in situ measurements |
title_full |
Atmospheric composition and kinetic parameters derived from spectroscopic and in situ measurements |
title_fullStr |
Atmospheric composition and kinetic parameters derived from spectroscopic and in situ measurements |
title_full_unstemmed |
Atmospheric composition and kinetic parameters derived from spectroscopic and in situ measurements |
title_sort |
atmospheric composition and kinetic parameters derived from spectroscopic and in situ measurements |
publishDate |
2010 |
url |
https://epic.awi.de/id/eprint/23116/ https://hdl.handle.net/10013/epic.35897 |
geographic |
Antarctic Arctic New Zealand The Antarctic |
geographic_facet |
Antarctic Arctic New Zealand The Antarctic |
genre |
Antarc* Antarctic Antarctica Arctic Climate change |
genre_facet |
Antarc* Antarctic Antarctica Arctic Climate change |
op_source |
EPIC3Chemistry Department Seminar, Victoria University of Wellington, New ZealandJanuary., 15 |
op_relation |
Schofield, R. (2010) Atmospheric composition and kinetic parameters derived from spectroscopic and in situ measurements , Chemistry Department Seminar, Victoria University of Wellington, New ZealandJanuary. . hdl:10013/epic.35897 |
_version_ |
1766245310161485824 |