Temporal and spatial variations in the Venus mesosphere retrieved from Pioneer Venus OIR

Measurements of the Venus mesosphere made in 1978/79 by the Pioneer Venus Orbiter Infrared Radiometer (OIR) have been reanalysed. An optimal estimation retrieval technique has been applied to data from individual orbits. These retrievals reveal the structure of transient features such as the polar d...

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Main Author: Irwin, P
Format: Conference item
Published: 1997
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author Irwin, P
author_facet Irwin, P
author_sort Irwin, P
collection OXFORD
description Measurements of the Venus mesosphere made in 1978/79 by the Pioneer Venus Orbiter Infrared Radiometer (OIR) have been reanalysed. An optimal estimation retrieval technique has been applied to data from individual orbits. These retrievals reveal the structure of transient features such as the polar dipole and polar collar and short term variations in water vapour abundance and cloud top height. High abundances of water vapour are observed at equatorial latitudes in the early afternoon with a spatial structure which appears consistent with the ultraviolet 'Y' shaped structure. Additionally a two to four day period is observed in both water vapour abundance and cloud top height which is the characteristic period of this ultraviolet feature. © 1997 COSPAR. Published by Elsevier Science Ltd.
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spelling oxford-uuid:8ba9981e-eb3a-4e46-980e-debaae0b3d4b2022-03-26T22:39:32ZTemporal and spatial variations in the Venus mesosphere retrieved from Pioneer Venus OIRConference itemhttp://purl.org/coar/resource_type/c_5794uuid:8ba9981e-eb3a-4e46-980e-debaae0b3d4bSymplectic Elements at Oxford1997Irwin, PMeasurements of the Venus mesosphere made in 1978/79 by the Pioneer Venus Orbiter Infrared Radiometer (OIR) have been reanalysed. An optimal estimation retrieval technique has been applied to data from individual orbits. These retrievals reveal the structure of transient features such as the polar dipole and polar collar and short term variations in water vapour abundance and cloud top height. High abundances of water vapour are observed at equatorial latitudes in the early afternoon with a spatial structure which appears consistent with the ultraviolet 'Y' shaped structure. Additionally a two to four day period is observed in both water vapour abundance and cloud top height which is the characteristic period of this ultraviolet feature. © 1997 COSPAR. Published by Elsevier Science Ltd.
spellingShingle Irwin, P
Temporal and spatial variations in the Venus mesosphere retrieved from Pioneer Venus OIR
title Temporal and spatial variations in the Venus mesosphere retrieved from Pioneer Venus OIR
title_full Temporal and spatial variations in the Venus mesosphere retrieved from Pioneer Venus OIR
title_fullStr Temporal and spatial variations in the Venus mesosphere retrieved from Pioneer Venus OIR
title_full_unstemmed Temporal and spatial variations in the Venus mesosphere retrieved from Pioneer Venus OIR
title_short Temporal and spatial variations in the Venus mesosphere retrieved from Pioneer Venus OIR
title_sort temporal and spatial variations in the venus mesosphere retrieved from pioneer venus oir
work_keys_str_mv AT irwinp temporalandspatialvariationsinthevenusmesosphereretrievedfrompioneervenusoir