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| Titel |
Variations in radiation and photolysis rates in the southern midlatitudes due to ozone depletion over the Antarctica |
| VerfasserIn |
Laura López Comi, Olaf Morgenstern, Guang Zeng, Sarah L. Masters |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250077693
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| Zusammenfassung |
| Lauder (45Ë S, 170Ë E), a research station located on the South Island of New Zealand, is a
clean-air atmospheric observatory representative of southern mid-latitudes. Long-term
records of various atmospheric chemical compounds have been measured here for up to three
decades. We assess observations of selected atmospheric chemical species, including
ozone, and their variability throughout the recording period. By utilizing these
observational data and a photolysis scheme (FAST-JX) we will address how changes in
the total ozone column and in aerosols at Lauder affect radiation and photolysis
rates of different species. The results serve as a stepping stone towards constructing
a single-column photolysis model for Lauder constrained with profiles of stable
species (e.g. ozone, methane, CO, HCHO, halogen compounds, etc) measured at
Lauder to derive variations and trends of shorter-lived species. One of our targets will
be changes in the tropospheric oxidizing capacity in the Southern Hemisphere. |
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