Estimated errors in a global gravity wave climatology from GPS radio occultation temperature profiles

In a previous paper by Schmidt et al. (2008), from CHAllenging Minisatellite Payload (CHAMP) Global Positioning System (GPS) radio occultation data, a comparison was made between a Gaussian filter applied to the "complete" temperature profile and to its "separate" tropospheric an...

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Autores principales: De La Torre, A., Llamedo, P., Alexander, P., Schmidt, T., Wickert, J.
Formato: JOUR
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Acceso en línea:http://hdl.handle.net/20.500.12110/paper_02731177_v46_n2_p174_DeLaTorre
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spelling todo:paper_02731177_v46_n2_p174_DeLaTorre2023-10-03T15:15:40Z Estimated errors in a global gravity wave climatology from GPS radio occultation temperature profiles De La Torre, A. Llamedo, P. Alexander, P. Schmidt, T. Wickert, J. GPS radio occultation Gravity waves Wave energy Climatology Gravity waves Molecular physics Potential energy Radio Temperature control Uncertainty analysis Wave energy conversion Challenging minisatellite payloads GPS radio occultations Radio occultations Statistical simulation Temperature profiles Vertical temperature profile Wave climatologies Wave energy Global positioning system In a previous paper by Schmidt et al. (2008), from CHAllenging Minisatellite Payload (CHAMP) Global Positioning System (GPS) radio occultation data, a comparison was made between a Gaussian filter applied to the "complete" temperature profile and to its "separate" tropospheric and stratospheric height intervals, for gravity wave analyses. It was found that the separate filtering method considerably reduces a wave activity artificial enhancement near the tropopause, presumably due to the isolation process of the wave component. We now propose a simple approach to estimate the uncertainty in the calculation of the mean specific wave potential energy content, due exclusively to the filtering process of vertical temperature profiles, independently of the experimental origin of the data. The approach is developed through a statistical simulation, built up from the superposition of synthetic wave perturbations. These are adjusted by a recent gravity wave (GW) climatology and temperature profiles from reanalyses. A systematic overestimation of the mean specific wave potential energy content is detected and its variability with latitude, altitude, season and averaging height interval is highlighted. © 2010 COSPAR. Published by Elsevier Ltd. All rights reserved. Fil:De La Torre, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Llamedo, P. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02731177_v46_n2_p174_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 GPS radio occultation
Gravity waves
Wave energy
Climatology
Gravity waves
Molecular physics
Potential energy
Radio
Temperature control
Uncertainty analysis
Wave energy conversion
Challenging minisatellite payloads
GPS radio occultations
Radio occultations
Statistical simulation
Temperature profiles
Vertical temperature profile
Wave climatologies
Wave energy
Global positioning system
spellingShingle GPS radio occultation
Gravity waves
Wave energy
Climatology
Gravity waves
Molecular physics
Potential energy
Radio
Temperature control
Uncertainty analysis
Wave energy conversion
Challenging minisatellite payloads
GPS radio occultations
Radio occultations
Statistical simulation
Temperature profiles
Vertical temperature profile
Wave climatologies
Wave energy
Global positioning system
De La Torre, A.
Llamedo, P.
Alexander, P.
Schmidt, T.
Wickert, J.
Estimated errors in a global gravity wave climatology from GPS radio occultation temperature profiles
topic_facet GPS radio occultation
Gravity waves
Wave energy
Climatology
Gravity waves
Molecular physics
Potential energy
Radio
Temperature control
Uncertainty analysis
Wave energy conversion
Challenging minisatellite payloads
GPS radio occultations
Radio occultations
Statistical simulation
Temperature profiles
Vertical temperature profile
Wave climatologies
Wave energy
Global positioning system
description In a previous paper by Schmidt et al. (2008), from CHAllenging Minisatellite Payload (CHAMP) Global Positioning System (GPS) radio occultation data, a comparison was made between a Gaussian filter applied to the "complete" temperature profile and to its "separate" tropospheric and stratospheric height intervals, for gravity wave analyses. It was found that the separate filtering method considerably reduces a wave activity artificial enhancement near the tropopause, presumably due to the isolation process of the wave component. We now propose a simple approach to estimate the uncertainty in the calculation of the mean specific wave potential energy content, due exclusively to the filtering process of vertical temperature profiles, independently of the experimental origin of the data. The approach is developed through a statistical simulation, built up from the superposition of synthetic wave perturbations. These are adjusted by a recent gravity wave (GW) climatology and temperature profiles from reanalyses. A systematic overestimation of the mean specific wave potential energy content is detected and its variability with latitude, altitude, season and averaging height interval is highlighted. © 2010 COSPAR. Published by Elsevier Ltd. All rights reserved.
format JOUR
author De La Torre, A.
Llamedo, P.
Alexander, P.
Schmidt, T.
Wickert, J.
author_facet De La Torre, A.
Llamedo, P.
Alexander, P.
Schmidt, T.
Wickert, J.
author_sort De La Torre, A.
title Estimated errors in a global gravity wave climatology from GPS radio occultation temperature profiles
title_short Estimated errors in a global gravity wave climatology from GPS radio occultation temperature profiles
title_full Estimated errors in a global gravity wave climatology from GPS radio occultation temperature profiles
title_fullStr Estimated errors in a global gravity wave climatology from GPS radio occultation temperature profiles
title_full_unstemmed Estimated errors in a global gravity wave climatology from GPS radio occultation temperature profiles
title_sort estimated errors in a global gravity wave climatology from gps radio occultation temperature profiles
url http://hdl.handle.net/20.500.12110/paper_02731177_v46_n2_p174_DeLaTorre
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AT schmidtt estimatederrorsinaglobalgravitywaveclimatologyfromgpsradiooccultationtemperatureprofiles
AT wickertj estimatederrorsinaglobalgravitywaveclimatologyfromgpsradiooccultationtemperatureprofiles
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