Global gravity wave activity in the tropopause region from CHAMP radio occultation data

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We discuss the global gravity wave (GW) activity expressed by the specific potential energy in the altitude range from 5 km below to 10 km above the tropopause, derived from GPS radio occultation data from CHAMP (2001-2008). The GW analysis is based on vertical detrending of the individual measured...

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Autores principales: Schmidt, T., de la Torre, A., Wickert, J.
Formato: Artículo publishedVersion
Publicado: 2008
Materias:
Extractive metallurgy
Gravitation
Gravitational effects
Gravity waves
Hydrodynamics
Potential energy
Temperature control
Tropical engineering
Waves
Altitude ranges
Filtering methods
Gaussian filters
Possible errors
Radio occultations
Temperature gradients
Temperature profiles
Tropopause regions
Wave activities
Clouds
GPS
gravity wave
potential energy
temperature gradient
tropopause
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00948276_v35_n16_p_Schmidt
http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00948276_v35_n16_p_Schmidt_oai
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Repositorio Digital de la Universidad de Buenos Aires (UBA) de Universidad de Buenos Aires
id I28-R145-paper_00948276_v35_n16_p_Schmidt_oai
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spelling I28-R145-paper_00948276_v35_n16_p_Schmidt_oai2020-10-19 Schmidt, T. de la Torre, A. Wickert, J. 2008 We discuss the global gravity wave (GW) activity expressed by the specific potential energy in the altitude range from 5 km below to 10 km above the tropopause, derived from GPS radio occultation data from CHAMP (2001-2008). The GW analysis is based on vertical detrending of the individual measured temperature profiles by applying a Gaussian filter in two different ways: (i) filtering of the complete temperature profiles and (ii) separate filtering of the profiles for the tropospheric and lower stratospheric parts. The separate filtering method significantly reduces the usually observed wave activity enhancement in the tropopause region which highly depends on the performance of the complete filtering method to reproduce the change in the temperature gradient at the tropopause. We only consider vertical wavelengths less than 10 km. The global mean potential energy in the tropopause region deduced with these different background temperatures will be analyzed, differences will be emphasized and possible error sources of the new method will be considered. Copyright 2008 by the American Geophysical Union. Fil:de la Torre, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. application/pdf http://hdl.handle.net/20.500.12110/paper_00948276_v35_n16_p_Schmidt info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Geophys. Res. Lett. 2008;35(16) Extractive metallurgy Gravitation Gravitational effects Gravity waves Hydrodynamics Potential energy Temperature control Tropical engineering Waves Altitude ranges Filtering methods Gaussian filters Possible errors Radio occultations Temperature gradients Temperature profiles Tropopause regions Wave activities Clouds GPS gravity wave potential energy temperature gradient tropopause Global gravity wave activity in the tropopause region from CHAMP radio occultation data info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00948276_v35_n16_p_Schmidt_oai
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-145
collection Repositorio Digital de la Universidad de Buenos Aires (UBA)
topic Extractive metallurgy
Gravitation
Gravitational effects
Gravity waves
Hydrodynamics
Potential energy
Temperature control
Tropical engineering
Waves
Altitude ranges
Filtering methods
Gaussian filters
Possible errors
Radio occultations
Temperature gradients
Temperature profiles
Tropopause regions
Wave activities
Clouds
GPS
gravity wave
potential energy
temperature gradient
tropopause
spellingShingle Extractive metallurgy
Gravitation
Gravitational effects
Gravity waves
Hydrodynamics
Potential energy
Temperature control
Tropical engineering
Waves
Altitude ranges
Filtering methods
Gaussian filters
Possible errors
Radio occultations
Temperature gradients
Temperature profiles
Tropopause regions
Wave activities
Clouds
GPS
gravity wave
potential energy
temperature gradient
tropopause
Schmidt, T.
de la Torre, A.
Wickert, J.
Global gravity wave activity in the tropopause region from CHAMP radio occultation data
topic_facet Extractive metallurgy
Gravitation
Gravitational effects
Gravity waves
Hydrodynamics
Potential energy
Temperature control
Tropical engineering
Waves
Altitude ranges
Filtering methods
Gaussian filters
Possible errors
Radio occultations
Temperature gradients
Temperature profiles
Tropopause regions
Wave activities
Clouds
GPS
gravity wave
potential energy
temperature gradient
tropopause
description We discuss the global gravity wave (GW) activity expressed by the specific potential energy in the altitude range from 5 km below to 10 km above the tropopause, derived from GPS radio occultation data from CHAMP (2001-2008). The GW analysis is based on vertical detrending of the individual measured temperature profiles by applying a Gaussian filter in two different ways: (i) filtering of the complete temperature profiles and (ii) separate filtering of the profiles for the tropospheric and lower stratospheric parts. The separate filtering method significantly reduces the usually observed wave activity enhancement in the tropopause region which highly depends on the performance of the complete filtering method to reproduce the change in the temperature gradient at the tropopause. We only consider vertical wavelengths less than 10 km. The global mean potential energy in the tropopause region deduced with these different background temperatures will be analyzed, differences will be emphasized and possible error sources of the new method will be considered. Copyright 2008 by the American Geophysical Union.
format Artículo
Artículo
publishedVersion
author Schmidt, T.
de la Torre, A.
Wickert, J.
author_facet Schmidt, T.
de la Torre, A.
Wickert, J.
author_sort Schmidt, T.
title Global gravity wave activity in the tropopause region from CHAMP radio occultation data
title_short Global gravity wave activity in the tropopause region from CHAMP radio occultation data
title_full Global gravity wave activity in the tropopause region from CHAMP radio occultation data
title_fullStr Global gravity wave activity in the tropopause region from CHAMP radio occultation data
title_full_unstemmed Global gravity wave activity in the tropopause region from CHAMP radio occultation data
title_sort global gravity wave activity in the tropopause region from champ radio occultation data
publishDate 2008
url http://hdl.handle.net/20.500.12110/paper_00948276_v35_n16_p_Schmidt
http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00948276_v35_n16_p_Schmidt_oai
work_keys_str_mv AT schmidtt globalgravitywaveactivityinthetropopauseregionfromchampradiooccultationdata
AT delatorrea globalgravitywaveactivityinthetropopauseregionfromchampradiooccultationdata
AT wickertj globalgravitywaveactivityinthetropopauseregionfromchampradiooccultationdata
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