Quantification of the chemical ozone loss in the northern and southern polar vortices using SCIAMACHY limb measurements
This study deals with the retrieval of stratospheric and lower mesospheric ozone profiles from satellite observations of limb--scattered solar radiation with SCIAMACHY on the Envisat satellite. The retrieval combines spectral information in the Chappuis and Hartley absorption bands of ozone and empl...
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Online Access: | https://media.suub.uni-bremen.de/handle/elib/2759 https://nbn-resolving.org/urn:nbn:de:gbv:46-diss000117402 |
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ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/2759 2023-05-15T13:12:04+02:00 Quantification of the chemical ozone loss in the northern and southern polar vortices using SCIAMACHY limb measurements Quantifizierung des chemischen Ozonabbaus innerhalb des polaren Vortexder Nord- und Südhemisphäre mit Hilfe von SCIAMACHY limb Messungen Sonkaew, Thiranan Burrows, John Schrems, Otto 2010-01-18 application/pdf https://media.suub.uni-bremen.de/handle/elib/2759 https://nbn-resolving.org/urn:nbn:de:gbv:46-diss000117402 eng eng Universität Bremen FB1 Physik/Elektrotechnik https://media.suub.uni-bremen.de/handle/elib/2759 urn:nbn:de:gbv:46-diss000117402 info:eu-repo/semantics/openAccess Stratospheric ozone loss Polar vortex Diabatic ozone descend SCIAMACHY Limb measurement 550 550 Earth sciences and geology ddc:550 Dissertation doctoralThesis 2010 ftsubbremen 2022-11-09T07:09:53Z This study deals with the retrieval of stratospheric and lower mesospheric ozone profiles from satellite observations of limb--scattered solar radiation with SCIAMACHY on the Envisat satellite. The retrieval combines spectral information in the Chappuis and Hartley absorption bands of ozone and employs the SCIATRAN radiative transfer model. The retrieved ozone profiles are applied into two aspects.First, the sensitivity of the ozone profile retrieval to tropospheric clouds is examined using the SCIATRAN radiative transfer model. The considered clouds are vertically and horizontally homogeneous. An aerosol-free atmosphere and Mie phase functions for cloud particles are assumed. Neglecting clouds in the retrieval, the relative errors of ozone profile retrievals in a cloudy atmosphere are computed. The cloud sensitivity of the limb ozone retrievals is significant in the Chappuis bands at lower stratospheric altitudes. The relative error in the retrieved ozone concentrations gradually decreases with increasing altitude and becomes negligible above approximately 40 km. Cloud optical thickness, ground albedo and solar zenith angle have a large impact on the ozone retrievals. For a given cloud optical thickness value, clouds with different geometrical thicknesses or different cloud altitudes have a similar impact on the ozone retrievals, if the clouds are outside the field of view of the instrument. The effective radius of water droplets and the solar azimuth angle has a small influence on the error. Neglecting clouds in the ozone profile retrievals generally leads to a low bias. For the most frequent cloud types, the total error is below 6% above 15 km altitude, if clouds are completely neglected in the retrieval. Second, the stratospheric and lower mesospheric ozone profile data set of SCIAMACHY measurements of limb-scattered solar radiation in the period 2002-2009 is used to determine the chemical ozone loss in both the Arctic and Antarctic polar vortices using the vortex average method. The vortex boundary is ... Doctoral or Postdoctoral Thesis albedo Antarc* Antarctic Arctic Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) Antarctic Arctic |
institution |
Open Polar |
collection |
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
op_collection_id |
ftsubbremen |
language |
English |
topic |
Stratospheric ozone loss Polar vortex Diabatic ozone descend SCIAMACHY Limb measurement 550 550 Earth sciences and geology ddc:550 |
spellingShingle |
Stratospheric ozone loss Polar vortex Diabatic ozone descend SCIAMACHY Limb measurement 550 550 Earth sciences and geology ddc:550 Sonkaew, Thiranan Quantification of the chemical ozone loss in the northern and southern polar vortices using SCIAMACHY limb measurements |
topic_facet |
Stratospheric ozone loss Polar vortex Diabatic ozone descend SCIAMACHY Limb measurement 550 550 Earth sciences and geology ddc:550 |
description |
This study deals with the retrieval of stratospheric and lower mesospheric ozone profiles from satellite observations of limb--scattered solar radiation with SCIAMACHY on the Envisat satellite. The retrieval combines spectral information in the Chappuis and Hartley absorption bands of ozone and employs the SCIATRAN radiative transfer model. The retrieved ozone profiles are applied into two aspects.First, the sensitivity of the ozone profile retrieval to tropospheric clouds is examined using the SCIATRAN radiative transfer model. The considered clouds are vertically and horizontally homogeneous. An aerosol-free atmosphere and Mie phase functions for cloud particles are assumed. Neglecting clouds in the retrieval, the relative errors of ozone profile retrievals in a cloudy atmosphere are computed. The cloud sensitivity of the limb ozone retrievals is significant in the Chappuis bands at lower stratospheric altitudes. The relative error in the retrieved ozone concentrations gradually decreases with increasing altitude and becomes negligible above approximately 40 km. Cloud optical thickness, ground albedo and solar zenith angle have a large impact on the ozone retrievals. For a given cloud optical thickness value, clouds with different geometrical thicknesses or different cloud altitudes have a similar impact on the ozone retrievals, if the clouds are outside the field of view of the instrument. The effective radius of water droplets and the solar azimuth angle has a small influence on the error. Neglecting clouds in the ozone profile retrievals generally leads to a low bias. For the most frequent cloud types, the total error is below 6% above 15 km altitude, if clouds are completely neglected in the retrieval. Second, the stratospheric and lower mesospheric ozone profile data set of SCIAMACHY measurements of limb-scattered solar radiation in the period 2002-2009 is used to determine the chemical ozone loss in both the Arctic and Antarctic polar vortices using the vortex average method. The vortex boundary is ... |
author2 |
Burrows, John Schrems, Otto |
format |
Doctoral or Postdoctoral Thesis |
author |
Sonkaew, Thiranan |
author_facet |
Sonkaew, Thiranan |
author_sort |
Sonkaew, Thiranan |
title |
Quantification of the chemical ozone loss in the northern and southern polar vortices using SCIAMACHY limb measurements |
title_short |
Quantification of the chemical ozone loss in the northern and southern polar vortices using SCIAMACHY limb measurements |
title_full |
Quantification of the chemical ozone loss in the northern and southern polar vortices using SCIAMACHY limb measurements |
title_fullStr |
Quantification of the chemical ozone loss in the northern and southern polar vortices using SCIAMACHY limb measurements |
title_full_unstemmed |
Quantification of the chemical ozone loss in the northern and southern polar vortices using SCIAMACHY limb measurements |
title_sort |
quantification of the chemical ozone loss in the northern and southern polar vortices using sciamachy limb measurements |
publisher |
Universität Bremen |
publishDate |
2010 |
url |
https://media.suub.uni-bremen.de/handle/elib/2759 https://nbn-resolving.org/urn:nbn:de:gbv:46-diss000117402 |
geographic |
Antarctic Arctic |
geographic_facet |
Antarctic Arctic |
genre |
albedo Antarc* Antarctic Arctic |
genre_facet |
albedo Antarc* Antarctic Arctic |
op_relation |
https://media.suub.uni-bremen.de/handle/elib/2759 urn:nbn:de:gbv:46-diss000117402 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766250209256407040 |