A case study of formation and maintenance of a lower stratospheric cirrus cloud over the tropics

A case study of formation and maintenance of a lower stratospheric cirrus cloud over the tropics

A rare occurrence of stratospheric cirrus at 18.6 km height persisting for about 5 days during 3–7 March 2014 is inferred from the ground-based Mie lidar observations over Gadanki (13.5° N, 79.2° E) and spaceborne observations. Due to the vertical transport by large updrafts on 3 March in the tr...

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Main Authors: M. Sandhya, S. Sridharan, M. Indira Devi, K. Niranjan, A. Jayaraman
Format: Article
Language:English
Published: Copernicus Publications 2015-05-01
Series:Annales Geophysicae
Online Access:https://www.ann-geophys.net/33/599/2015/angeo-33-599-2015.pdf
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spelling doaj-808e10f3e2bd40f0a16ceda9748452bd2020-11-24T22:55:10ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762015-05-013359960810.5194/angeo-33-599-2015A case study of formation and maintenance of a lower stratospheric cirrus cloud over the tropicsM. Sandhya0M. Sandhya1S. Sridharan2M. Indira Devi3K. Niranjan4A. Jayaraman5National Atmospheric Research Laboratory, Gadanki 517 112, Pakala Mandal, Chittoor District, Andhra Pradesh, IndiaDepartment of Physics, Andhra University, Visakhapatnam, Andhra Pradesh 530003 IndiaNational Atmospheric Research Laboratory, Gadanki 517 112, Pakala Mandal, Chittoor District, Andhra Pradesh, IndiaDepartment of Physics, Andhra University, Visakhapatnam, Andhra Pradesh 530003 IndiaDepartment of Physics, Andhra University, Visakhapatnam, Andhra Pradesh 530003 IndiaNational Atmospheric Research Laboratory, Gadanki 517 112, Pakala Mandal, Chittoor District, Andhra Pradesh, IndiaA rare occurrence of stratospheric cirrus at 18.6 km height persisting for about 5 days during 3–7 March 2014 is inferred from the ground-based Mie lidar observations over Gadanki (13.5° N, 79.2° E) and spaceborne observations. Due to the vertical transport by large updrafts on 3 March in the troposphere, triggered by a potential vorticity intrusion, the water vapour mixing ratio shows an increase around the height of 18.6 km. Relative humidity with respect to ice is ~ 150%, indicating that the cirrus cloud may be formed though homogeneous nucleation of sulfuric acid. The cirrus cloud persists due to the cold anomaly associated with the presence of a 4-day wave.https://www.ann-geophys.net/33/599/2015/angeo-33-599-2015.pdf
collection DOAJ
language English
format Article
sources DOAJ
author M. Sandhya
M. Sandhya
S. Sridharan
M. Indira Devi
K. Niranjan
A. Jayaraman
spellingShingle M. Sandhya
M. Sandhya
S. Sridharan
M. Indira Devi
K. Niranjan
A. Jayaraman
A case study of formation and maintenance of a lower stratospheric cirrus cloud over the tropics
Annales Geophysicae
author_facet M. Sandhya
M. Sandhya
S. Sridharan
M. Indira Devi
K. Niranjan
A. Jayaraman
author_sort M. Sandhya
title A case study of formation and maintenance of a lower stratospheric cirrus cloud over the tropics
title_short A case study of formation and maintenance of a lower stratospheric cirrus cloud over the tropics
title_full A case study of formation and maintenance of a lower stratospheric cirrus cloud over the tropics
title_fullStr A case study of formation and maintenance of a lower stratospheric cirrus cloud over the tropics
title_full_unstemmed A case study of formation and maintenance of a lower stratospheric cirrus cloud over the tropics
title_sort case study of formation and maintenance of a lower stratospheric cirrus cloud over the tropics
publisher Copernicus Publications
series Annales Geophysicae
issn 0992-7689
1432-0576
publishDate 2015-05-01
description A rare occurrence of stratospheric cirrus at 18.6 km height persisting for about 5 days during 3–7 March 2014 is inferred from the ground-based Mie lidar observations over Gadanki (13.5° N, 79.2° E) and spaceborne observations. Due to the vertical transport by large updrafts on 3 March in the troposphere, triggered by a potential vorticity intrusion, the water vapour mixing ratio shows an increase around the height of 18.6 km. Relative humidity with respect to ice is ~ 150%, indicating that the cirrus cloud may be formed though homogeneous nucleation of sulfuric acid. The cirrus cloud persists due to the cold anomaly associated with the presence of a 4-day wave.
url https://www.ann-geophys.net/33/599/2015/angeo-33-599-2015.pdf
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