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Abstract:

The Global Positioning System (GPS) Radio Occultation (RO) technique has global coverage and is capable of generating high vertical resolution temperature profiles of the upper troposphere and lower stratosphere with sub-Kelvin accuracy and long-term stability, regardless of weather conditions. In this work, we take advantage of the anomalously high density of occultation events at the eastern side of the highest Andes Mountains during the initial mission months of COSMIC (Constellation Observing System for Meteorology, Ionosphere and Climate). This region is well-known for its high wave activity. We choose to study two pairs of GPS RO, both containing two occultations that occurred close in time and space. One pair shows significant differences between both temperature profiles. Numerical simulations with a mesoscale model were performed, in order to understand this discrepancy. It is attributed to the presence of a horizontal inhomogeneous structure caused by gravity waves. © 2010 COSPAR.

Registro:

Documento: Artículo
Título:A comparative and numerical study of effects of gravity waves in small miss-distance and miss-time GPS radio occultation temperature profiles
Autor:Alexander, P.; Luna, D.; de la Torre, A.; Llamedo, P.; Schmidt, T.; Wickert, J.
Filiación:Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
GFZ German Research Centre for Geosciences, Department 1: Geodesy and Remote Sensing, Telegrafenberg A17, Potsdam, D-14473, Germany
Palabras clave:Gravity waves; Numerical simulation; Radio occultation; Stratosphere; Close-in; Constellation observing system for meteorology; Eastern side; Global coverage; High density; High vertical resolution; Inhomogeneous structure; Ionosphere and climates; Long term stability; Lower stratosphere; Mesoscale model; Miss-distance; Numerical simulation; Numerical studies; Radio occultation; Radio occultations; Temperature profiles; Time and space; Upper troposphere; Wave activity; Weather conditions; Atmospherics; Computer simulation; Cosmology; Global positioning system; Gravitational effects; Gravity waves; Hydrodynamics; Ionosphere; Meteorology; Radio; Sulfur compounds; Temperature control; Waves; Mathematical models
Año:2010
Volumen:45
Número:10
Página de inicio:1231
Página de fin:1234
DOI: http://dx.doi.org/10.1016/j.asr.2009.12.015
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_v45_n10_p1231_Alexander

Referencias:

  • Alexander, P., de la Torre, A., Llamedo, P., Interpretation of gravity wave signatures in GPS radio occultations (2008) J. Geophys. Res., 113, pp. D16117
  • 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
  • Hajj, G.A., Ao, C.O., Iijima, B.A., Kuang, D., Kursinski, E.R., Mannucci, A.J., Meehan, T.K., Yunck, T.P., CHAMP and SAC-C atmospheric occultation results and intercomparisons (2004) J. Geophys. Res., 109, pp. D06109
  • Jiang, J.H., Wu, D.L., Eckermann, S.D., Upper Atmosphere Research Satellite (UARS) MLS observations of mountain waves over the Andes (2002) J. Geophys. Res., 107, p. 8273
  • Kuo, Y.-H., Schreiner, W.S., Wang, J., Rossiter, D.L., Zhang, Y., Comparison of GPS radio occultation soundings with radiosondes (2005) Geophys. Res. Lett., 32, pp. L05817
  • Kursinski, E.R., Hajj, G.A., Schofield, J.T., Linfield, R.P., Hardy, K.R., Observing Earths atmosphere with radio occultation measurements using the Global Positioning System (1997) J. Geophys. Res., 102, pp. 23429-23465
  • Liou, Y.-A., Pavelyev, A.G., Liu, S.-F., Pavelyev, A.A., Yen, N., Huang, C.-Y., Fong, C.J., FORMOSAT-3/COSMIC GPS radio occultation mission: preliminary results (2007) IEEE Trans. Geosci. Remote Sens., 45, pp. 3813-3826
  • Preusse, P., Dörnbrack, A., Eckermann, S.D., Riese, M., Schaeler, B., Bacmeister, J.T., Broutman, D., Grossmann, K.U., Space-based measurements of stratospheric mountain waves by CRISTA: 1. Sensitivity, analysis method, and a case study (2002) J. Geophys. Res., 107, p. 8178
  • Wu, D.L., Preusse, P., Eckermann, S.D., Jiang, J.H., de la Torre Juarez, M., Coy, L., Wang, D.Y., Remote sounding of atmospheric gravity waves with satellite limb and nadir techniques (2006) Adv. Space Res., 37, pp. 2269-2277

Citas:

---------- APA ----------
Alexander, P., Luna, D., de la Torre, A., Llamedo, P., Schmidt, T. & Wickert, J. (2010) . A comparative and numerical study of effects of gravity waves in small miss-distance and miss-time GPS radio occultation temperature profiles. Advances in Space Research, 45(10), 1231-1234.
http://dx.doi.org/10.1016/j.asr.2009.12.015
---------- CHICAGO ----------
Alexander, P., Luna, D., de la Torre, A., Llamedo, P., Schmidt, T., Wickert, J. "A comparative and numerical study of effects of gravity waves in small miss-distance and miss-time GPS radio occultation temperature profiles" . Advances in Space Research 45, no. 10 (2010) : 1231-1234.
http://dx.doi.org/10.1016/j.asr.2009.12.015
---------- MLA ----------
Alexander, P., Luna, D., de la Torre, A., Llamedo, P., Schmidt, T., Wickert, J. "A comparative and numerical study of effects of gravity waves in small miss-distance and miss-time GPS radio occultation temperature profiles" . Advances in Space Research, vol. 45, no. 10, 2010, pp. 1231-1234.
http://dx.doi.org/10.1016/j.asr.2009.12.015
---------- VANCOUVER ----------
Alexander, P., Luna, D., de la Torre, A., Llamedo, P., Schmidt, T., Wickert, J. A comparative and numerical study of effects of gravity waves in small miss-distance and miss-time GPS radio occultation temperature profiles. Adv. Space Res. 2010;45(10):1231-1234.
http://dx.doi.org/10.1016/j.asr.2009.12.015