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Abstract:

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.

Registro:

Documento: Artículo
Título:Estimated errors in a global gravity wave climatology from GPS radio occultation temperature profiles
Autor:De La Torre, A.; Llamedo, P.; Alexander, P.; Schmidt, T.; Wickert, J.
Filiación:Facultad de Ingeniería, Universidad Austral, Av. Garay 125, C1063ABB Buenos Aires, Argentina
Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Telegrafenberg A17, Potsdam, D-14473, Germany
Palabras clave: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
Año:2010
Volumen:46
Número:2
Página de inicio:174
Página de fin:179
DOI: http://dx.doi.org/10.1016/j.asr.2010.02.033
Título revista:Advances in Space Research
Título revista abreviado:Adv. Space Res.
ISSN:02731177
CODEN:ASRSD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02731177_v46_n2_p174_DeLaTorre

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Citas:

---------- APA ----------
De La Torre, A., Llamedo, P., Alexander, P., Schmidt, T. & Wickert, J. (2010) . Estimated errors in a global gravity wave climatology from GPS radio occultation temperature profiles. Advances in Space Research, 46(2), 174-179.
http://dx.doi.org/10.1016/j.asr.2010.02.033
---------- CHICAGO ----------
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" . Advances in Space Research 46, no. 2 (2010) : 174-179.
http://dx.doi.org/10.1016/j.asr.2010.02.033
---------- MLA ----------
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" . Advances in Space Research, vol. 46, no. 2, 2010, pp. 174-179.
http://dx.doi.org/10.1016/j.asr.2010.02.033
---------- VANCOUVER ----------
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. Adv. Space Res. 2010;46(2):174-179.
http://dx.doi.org/10.1016/j.asr.2010.02.033