Gravity waves above Andes detected from GPS radio occultation temperature profiles: Mountain forcing?

A significant wave activity in the upper troposphere and lower stratosphere at midlatitudes (30-40S) above the Andes Range was recently detected from Global Positioning System Radio Occultation (GPS RO) temperature profiles, retrieved from SAC-C (Satélite de Aplicaciones Cientficas-C and CHAMP (CHAl...

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Detalles Bibliográficos
Autores principales: De La Torre, Alejandro Eduardo, Alexander, Pedro M.
Publicado: 2005
Materias:
Atmospheric temperature
Climatology
Global positioning system
Upper atmosphere
Weather satellites
Mountain waves
Radio occultation
Gravity waves
atmospheric wave
GPS
gravity wave
temperature profile
Andes
South America
Western Hemisphere
World
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00948276_v32_n17_p1_delaTorre
http://hdl.handle.net/20.500.12110/paper_00948276_v32_n17_p1_delaTorre
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00948276_v32_n17_p1_delaTorre
record_format dspace
spelling paper:paper_00948276_v32_n17_p1_delaTorre2023-06-08T15:09:32Z Gravity waves above Andes detected from GPS radio occultation temperature profiles: Mountain forcing? De La Torre, Alejandro Eduardo Alexander, Pedro M. Atmospheric temperature Climatology Global positioning system Upper atmosphere Weather satellites Mountain waves Radio occultation Gravity waves atmospheric wave GPS gravity wave temperature profile Andes South America Western Hemisphere World A significant wave activity in the upper troposphere and lower stratosphere at midlatitudes (30-40S) above the Andes Range was recently detected from Global Positioning System Radio Occultation (GPS RO) temperature profiles, retrieved from SAC-C (Satélite de Aplicaciones Cientficas-C and CHAMP (CHAllenging Minisatellite Payload) satellites. Previously, large amplitude, long vertical wavelength structures have been reported in this region, as detected from other limb-sounding devices and have been identified as mountain waves (MWs). The capability of GPS RO observations to detect typical MWs with horizontal wavelengths shorter than 150 km, as well as the proper association of the observed wave activity to mountain forcing is put in doubt. Other three possible sources are discussed. In particular, the generation of inertio-gravity waves by geostrophic adjustment near to a permanent jet situated above the mountains, may constitute another important mechanism in this region. These waves may possess longer horizontal and perhaps shorter vertical wavelengths than those typically expected in MWs and could be more easily detected from limb-sounding profiles. The "jet" mechanism will be discussed in a second paper. Copyright 2005 by the American Geophysical Union. Fil:de la Torre, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Alexander, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00948276_v32_n17_p1_delaTorre http://hdl.handle.net/20.500.12110/paper_00948276_v32_n17_p1_delaTorre
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Atmospheric temperature
Climatology
Global positioning system
Upper atmosphere
Weather satellites
Mountain waves
Radio occultation
Gravity waves
atmospheric wave
GPS
gravity wave
temperature profile
Andes
South America
Western Hemisphere
World
spellingShingle Atmospheric temperature
Climatology
Global positioning system
Upper atmosphere
Weather satellites
Mountain waves
Radio occultation
Gravity waves
atmospheric wave
GPS
gravity wave
temperature profile
Andes
South America
Western Hemisphere
World
De La Torre, Alejandro Eduardo
Alexander, Pedro M.
Gravity waves above Andes detected from GPS radio occultation temperature profiles: Mountain forcing?
topic_facet Atmospheric temperature
Climatology
Global positioning system
Upper atmosphere
Weather satellites
Mountain waves
Radio occultation
Gravity waves
atmospheric wave
GPS
gravity wave
temperature profile
Andes
South America
Western Hemisphere
World
description A significant wave activity in the upper troposphere and lower stratosphere at midlatitudes (30-40S) above the Andes Range was recently detected from Global Positioning System Radio Occultation (GPS RO) temperature profiles, retrieved from SAC-C (Satélite de Aplicaciones Cientficas-C and CHAMP (CHAllenging Minisatellite Payload) satellites. Previously, large amplitude, long vertical wavelength structures have been reported in this region, as detected from other limb-sounding devices and have been identified as mountain waves (MWs). The capability of GPS RO observations to detect typical MWs with horizontal wavelengths shorter than 150 km, as well as the proper association of the observed wave activity to mountain forcing is put in doubt. Other three possible sources are discussed. In particular, the generation of inertio-gravity waves by geostrophic adjustment near to a permanent jet situated above the mountains, may constitute another important mechanism in this region. These waves may possess longer horizontal and perhaps shorter vertical wavelengths than those typically expected in MWs and could be more easily detected from limb-sounding profiles. The "jet" mechanism will be discussed in a second paper. Copyright 2005 by the American Geophysical Union.
author De La Torre, Alejandro Eduardo
Alexander, Pedro M.
author_facet De La Torre, Alejandro Eduardo
Alexander, Pedro M.
author_sort De La Torre, Alejandro Eduardo
title Gravity waves above Andes detected from GPS radio occultation temperature profiles: Mountain forcing?
title_short Gravity waves above Andes detected from GPS radio occultation temperature profiles: Mountain forcing?
title_full Gravity waves above Andes detected from GPS radio occultation temperature profiles: Mountain forcing?
title_fullStr Gravity waves above Andes detected from GPS radio occultation temperature profiles: Mountain forcing?
title_full_unstemmed Gravity waves above Andes detected from GPS radio occultation temperature profiles: Mountain forcing?
title_sort gravity waves above andes detected from gps radio occultation temperature profiles: mountain forcing?
publishDate 2005
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00948276_v32_n17_p1_delaTorre
http://hdl.handle.net/20.500.12110/paper_00948276_v32_n17_p1_delaTorre
work_keys_str_mv AT delatorrealejandroeduardo gravitywavesaboveandesdetectedfromgpsradiooccultationtemperatureprofilesmountainforcing
AT alexanderpedrom gravitywavesaboveandesdetectedfromgpsradiooccultationtemperatureprofilesmountainforcing
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