Refinements in the use of equivalent latitude for assimilating sporadic inhomogeneous stratospheric tracer observations, 2: Precise altitude-resolved information about transport of Pinatubo aerosol to very high latitude
International audience From high latitude lidar observations, quite precise information is extracted about the temporal evolution and vertical distribution of volcanic aerosol in the high latitude lower stratosphere following the eruption of Mount Pinatubo. Irreversible mixing of lower stratospheric...
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ftccsdartic:oai:HAL:hal-00295505v1 2023-11-12T04:13:12+01:00 Refinements in the use of equivalent latitude for assimilating sporadic inhomogeneous stratospheric tracer observations, 2: Precise altitude-resolved information about transport of Pinatubo aerosol to very high latitude Good, P. Pyle, J. Institute for Environmental Research and Sustainable Development (IERSD) National Observatory of Athens (NOA) Centre for Atmospheric Science Cambridge, UK University of Cambridge UK (CAM) 2004-09-13 https://hal.science/hal-00295505 https://hal.science/hal-00295505/document https://hal.science/hal-00295505/file/acp-4-1837-2004.pdf en eng HAL CCSD European Geosciences Union hal-00295505 https://hal.science/hal-00295505 https://hal.science/hal-00295505/document https://hal.science/hal-00295505/file/acp-4-1837-2004.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00295505 Atmospheric Chemistry and Physics, 2004, 4 (7), pp.1837-1848 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2004 ftccsdartic 2023-10-21T23:17:47Z International audience From high latitude lidar observations, quite precise information is extracted about the temporal evolution and vertical distribution of volcanic aerosol in the high latitude lower stratosphere following the eruption of Mount Pinatubo. Irreversible mixing of lower stratospheric aerosol, to the arctic pole during early 1992, is demonstrated, as a function of potential temperature and time. This work complements previous studies, which either identify vortex intrusions - without demonstrating irreversible transport, or use lower resolution satellite observations. The observed transport is associated tentatively with the vortex disturbance during late January, 1992. A very large number of high resolution lidar observations of Mount Pinatubo aerosol are analysed, without any data averaging. Averaging in measurement or analysis can cause tracer mixing to be overestimated. Averaging in the analysis can also require assumptions about which quantity has the dominant error (in this case, the equivalent latitude coordinate or the measurement), and which part of the data contains real structure. The method below attempts to avoid such assumptions. Article in Journal/Newspaper Arctic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic |
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Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Good, P. Pyle, J. Refinements in the use of equivalent latitude for assimilating sporadic inhomogeneous stratospheric tracer observations, 2: Precise altitude-resolved information about transport of Pinatubo aerosol to very high latitude |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience From high latitude lidar observations, quite precise information is extracted about the temporal evolution and vertical distribution of volcanic aerosol in the high latitude lower stratosphere following the eruption of Mount Pinatubo. Irreversible mixing of lower stratospheric aerosol, to the arctic pole during early 1992, is demonstrated, as a function of potential temperature and time. This work complements previous studies, which either identify vortex intrusions - without demonstrating irreversible transport, or use lower resolution satellite observations. The observed transport is associated tentatively with the vortex disturbance during late January, 1992. A very large number of high resolution lidar observations of Mount Pinatubo aerosol are analysed, without any data averaging. Averaging in measurement or analysis can cause tracer mixing to be overestimated. Averaging in the analysis can also require assumptions about which quantity has the dominant error (in this case, the equivalent latitude coordinate or the measurement), and which part of the data contains real structure. The method below attempts to avoid such assumptions. |
author2 |
Institute for Environmental Research and Sustainable Development (IERSD) National Observatory of Athens (NOA) Centre for Atmospheric Science Cambridge, UK University of Cambridge UK (CAM) |
format |
Article in Journal/Newspaper |
author |
Good, P. Pyle, J. |
author_facet |
Good, P. Pyle, J. |
author_sort |
Good, P. |
title |
Refinements in the use of equivalent latitude for assimilating sporadic inhomogeneous stratospheric tracer observations, 2: Precise altitude-resolved information about transport of Pinatubo aerosol to very high latitude |
title_short |
Refinements in the use of equivalent latitude for assimilating sporadic inhomogeneous stratospheric tracer observations, 2: Precise altitude-resolved information about transport of Pinatubo aerosol to very high latitude |
title_full |
Refinements in the use of equivalent latitude for assimilating sporadic inhomogeneous stratospheric tracer observations, 2: Precise altitude-resolved information about transport of Pinatubo aerosol to very high latitude |
title_fullStr |
Refinements in the use of equivalent latitude for assimilating sporadic inhomogeneous stratospheric tracer observations, 2: Precise altitude-resolved information about transport of Pinatubo aerosol to very high latitude |
title_full_unstemmed |
Refinements in the use of equivalent latitude for assimilating sporadic inhomogeneous stratospheric tracer observations, 2: Precise altitude-resolved information about transport of Pinatubo aerosol to very high latitude |
title_sort |
refinements in the use of equivalent latitude for assimilating sporadic inhomogeneous stratospheric tracer observations, 2: precise altitude-resolved information about transport of pinatubo aerosol to very high latitude |
publisher |
HAL CCSD |
publishDate |
2004 |
url |
https://hal.science/hal-00295505 https://hal.science/hal-00295505/document https://hal.science/hal-00295505/file/acp-4-1837-2004.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00295505 Atmospheric Chemistry and Physics, 2004, 4 (7), pp.1837-1848 |
op_relation |
hal-00295505 https://hal.science/hal-00295505 https://hal.science/hal-00295505/document https://hal.science/hal-00295505/file/acp-4-1837-2004.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782331320790155264 |