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...
Main Authors: | , |
---|---|
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2004
|
Subjects: | |
Online Access: | https://hal.science/hal-00301082 https://hal.science/hal-00301082/document https://hal.science/hal-00301082/file/acpd-4-667-2004.pdf |
id |
ftccsdartic:oai:HAL:hal-00301082v1 |
---|---|
record_format |
openpolar |
spelling |
ftccsdartic:oai:HAL:hal-00301082v1 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. National Observatory of Athens (NOA) Centre for Atmospheric Science Cambridge, UK University of Cambridge UK (CAM) 2004-01-29 https://hal.science/hal-00301082 https://hal.science/hal-00301082/document https://hal.science/hal-00301082/file/acpd-4-667-2004.pdf en eng HAL CCSD European Geosciences Union hal-00301082 https://hal.science/hal-00301082 https://hal.science/hal-00301082/document https://hal.science/hal-00301082/file/acpd-4-667-2004.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00301082 Atmospheric Chemistry and Physics Discussions, 2004, 4 (1), pp.667-693 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2004 ftccsdartic 2023-10-21T23:13:47Z 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 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
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 |
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-00301082 https://hal.science/hal-00301082/document https://hal.science/hal-00301082/file/acpd-4-667-2004.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00301082 Atmospheric Chemistry and Physics Discussions, 2004, 4 (1), pp.667-693 |
op_relation |
hal-00301082 https://hal.science/hal-00301082 https://hal.science/hal-00301082/document https://hal.science/hal-00301082/file/acpd-4-667-2004.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782331323040399360 |