Navegar

Colección

Datos Estadísticas

Artículo

La versión final de este artículo es de uso interno. El editor solo permite incluir en el repositorio el artículo en su versión post-print. Por favor, si usted la posee enviela a
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

Global maps of potential wave energy per unit mass, recently performed with the Global Positioning System (GPS) Radio Occultation (RO) technique and different satellite missions (CHAMP and SAC-C since 2001, GRACE and COSMIC since 2006) revealed in Argentina, at the eastern side of the highest Andes Mountains, a considerable wave activity (WA) in comparison with other extra-tropical regions. The main gravity wave (GW) sources in this natural laboratory are deep convection (mainly during late Spring and Summer), topographic forcing and geostrophic adjustment. The mesoscale numerical WRF (Weather Research and Forecasting) 2.1.2 model was used to simulate the atmospheric parameters during two representative RO events showing apparent intense WA in this region. The significance of the relative position of the RO lines of sight, the line of tangent points and GW phase surfaces during each event is discussed in relation with the apparent WA detected. The GPS RO technique may not be by itself reliable enough to quantify and locate WA of single events. Nevertheless, it should be considered a useful tool to observe the global WA from statistical studies. We also discuss the relative contribution of high and medium intrinsic frequency mountain waves regularly observed, coexisting with inertio gravity waves, their origin and propagation characteristics. © 2009 COSPAR.

Registro:

Documento: Artículo
Título:A gravity wave analysis near to the Andes Range from GPS radio occultation data and mesoscale numerical simulations: Two case studies
Autor:Llamedo, P.; de la Torre, A.; Alexander, P.; Luna, D.; Schmidt, T.; Wickert, J.
Filiación:Departamento de Fsica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Department 1: Geodesy and Remote Sensing, Telegrafenberg A17, Potsdam, D-14473, Germany
Palabras clave:Andes; GPS RO; Gravity waves; WRF; Andes; Argentina; Atmospheric parameters; Deep convection; Eastern side; Geostrophic adjustment; Global map; GPS RO; Intrinsic frequency; Lines-of-sight; Mesoscale; Mountain wave; Natural laboratories; Numerical simulation; Phase surface; Propagation characteristics; Radio occultations; Relative contribution; Relative positions; Satellite mission; Single event; Statistical study; Tangent point; Topographic forcing; Tropical regions; Wave activity; Wave analysis; Wave energy; Weather research and forecasting; WRF; Atmospheric turbulence; Cosmology; Geodetic satellites; Global positioning system; Gravity waves; Hydrodynamics; Landforms; Wave energy conversion; Waves; Weather forecasting; Gravitational effects
Año:2009
Volumen:44
Número:4
Página de inicio:494
Página de fin:500
DOI: http://dx.doi.org/10.1016/j.asr.2009.04.023
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_v44_n4_p494_Llamedo

Referencias:

  • Alexander, M.J., Gille, J., Cavanaugh, C., Global estimates of gravity wave momentum flux from high resolution dynamics limb sounder observations (2008) J. Geophys. Res., 113, pp. D15S18. , 10.1029/2007JD008807
  • Alexander, P., de la Torre, A., Llamedo, P., Interpretation of gravity wave signatures in GPS radio occultations (2008) J. Geophys. Res., 113, pp. D16117. , 10.1029/2007JD009390
  • de la Torre, A., Alexander, P., Gravity waves above Andes detected from GPS radio occultation temperature profiles: mountain forcing? (2005) Geophys. Res. Lett., 32, pp. L17815. , 10.1029/2005GL022959
  • de la Torre, A., Schmidt, T., Wickert, J., A global analysis of wave potential energy in the lower stratosphere derived from 5 years of GPS radio occultation data with CHAMP (2006) Geophys. Res. Lett., 33, pp. L24809. , 10.1029/2006GL027696
  • Eckermann, S.D., Preusse, P., Global measurements of stratospheric mountain waves from space (1999) Science, 286, pp. 1534-1537
  • Gill, A., (1982) Atmosphere-Ocean Dynamics, , Academic Press, New York
  • Hirota, I., Niki, T., A statistical study of inertia-gravity waves in the middle atmosphere (1985) J. Meteorol. Soc. Jpn., 63, pp. 1055-1066
  • Jiang, J.H., Wu, D.L., Eckermann, S.D., Upper Atmosphere Research Satellite (UARS) MLS observation of mountain waves over the Andes (2002) J. Geophys. Res., 107, p. 8273. , 10.1029/2002JD002091
  • Kirchengast, G., Occultations for probing atmosphere and climate: setting the scene (2004) Occultations for Probing Atmosphere and Climate, pp. 1-8. , Springer, New York
  • Kursinski, E.R., Hajj, G.A., Schofield, J.T., Observing Earth's atmosphere with radio occultation measurement using the Global Positioning System (1997) J. Geophys. Res., 102 (D19), pp. 23429-23465
  • Lange, M., Jacobi, Ch., Analysis of gravity waves from radio occultation measurements (2003) First CHAMP Mission Results for Gravity, Magnetic and Atmospheric Studies, pp. 479-484. , Springer, Berlin
  • Liou, Y.A., Pavelyev, A.G., Liu, S.F., FORMOSAT-3/COSMIC GPS radio occultation mission: preliminary results (2007) IEEE Trans. Geo. Rem. Sens., 45, pp. 3813-3826
  • Preusse, P., Dörnbrack, A., Eckermann, S.D., Space-based measurements of stratospheric mountain waves by CRISTA 1. Sensitivity, analysis method, and a case study (2002) J. Geophys. Res., 107, p. 8178. , 10.1029/2001JD000699
  • Shutts, G.J., Kitchen, M., Hoare, P.H., A large amplitude gravity wave in the lower stratosphere detected by radiosonde (1988) Q. J. R. Meteorol. Soc., 114, pp. 579-594
  • Skamarock, W.C, Klemp, J. B, Dudhia, J, et al. A Description of the Advanced Research WRF Version 2.NCAR Technical Note, 2005; Torrence, C., Compo, G.P., A practical guide to wavelet analysis (1998) Bull. Am. Meteorol. Soc., 79, p. 6178
  • Wickert, J., Michalak, G., Schmidt, T., GPS radio occultation: results from CHAMP, GRACE, and FORMOSAT-3/COSMIC (2009) Terr. Atmos. Ocean. Sci., 20. , 10.3319/TAO.2007.12.26.01 (F3C)
  • Wu, D.L., Preusse, P., Eckermann, S.D., Remote sounding of atmospheric gravity waves with satellite limb and nadir techniques (2006) Adv. Space Res., 37, pp. 2269-2277
  • Wu, D.L., Zhang, F., A study of mesoscale gravity waves over North Atlantic with satellite observations and a mesoscale model (2004) J. Geophys. Res., 109, pp. D22104. , 10.1029/2004JD005090
  • Zhang, F., Generation of mesoscale gravity waves in upper-tropospheric jet-front systems (2004) J. Atmos. Sci., 61, pp. 440-457

Citas:

---------- APA ----------
Llamedo, P., de la Torre, A., Alexander, P., Luna, D., Schmidt, T. & Wickert, J. (2009) . A gravity wave analysis near to the Andes Range from GPS radio occultation data and mesoscale numerical simulations: Two case studies. Advances in Space Research, 44(4), 494-500.
http://dx.doi.org/10.1016/j.asr.2009.04.023
---------- CHICAGO ----------
Llamedo, P., de la Torre, A., Alexander, P., Luna, D., Schmidt, T., Wickert, J. "A gravity wave analysis near to the Andes Range from GPS radio occultation data and mesoscale numerical simulations: Two case studies" . Advances in Space Research 44, no. 4 (2009) : 494-500.
http://dx.doi.org/10.1016/j.asr.2009.04.023
---------- MLA ----------
Llamedo, P., de la Torre, A., Alexander, P., Luna, D., Schmidt, T., Wickert, J. "A gravity wave analysis near to the Andes Range from GPS radio occultation data and mesoscale numerical simulations: Two case studies" . Advances in Space Research, vol. 44, no. 4, 2009, pp. 494-500.
http://dx.doi.org/10.1016/j.asr.2009.04.023
---------- VANCOUVER ----------
Llamedo, P., de la Torre, A., Alexander, P., Luna, D., Schmidt, T., Wickert, J. A gravity wave analysis near to the Andes Range from GPS radio occultation data and mesoscale numerical simulations: Two case studies. Adv. Space Res. 2009;44(4):494-500.
http://dx.doi.org/10.1016/j.asr.2009.04.023