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Abstract:

A spectral analysis of two balloon soundings of temperature performed in the troposphere and lower stratosphere over the Andes Mountains in Argentina with a vertical resolution of 10 m has been performed. The first and second soundings, launched at the same location, were performed during unusually calm and disturbed atmospheric conditions respectively. Considerable deviations from the -3 value predicted for the spectral slopes in the power-law range by current saturation theories are found. These departures are reduced if the data resolution at disposal is diminished, thereby eliminating the highest wavelength harmonics. Slopes do not clearly steepen with increasing height as suggested by other authors and topography seems to be responsible for this fact at low altitudes. The spectral amplitude increase with height detected from recent lidar data is corroborated only in the sounding with calm atmospheric conditions. Spectra are found to scale with the buoyancy frequency not as simply as suggested by the saturation models. Copyright 1997 by the American Geophysical Union.

Registro:

Documento: Artículo
Título:High-resolution temperature profiles measured with stratospheric balloons near the Andes Mountains
Autor:De La Torre, A.; Alexander, P.; Giraldez, A.
Filiación:Departamento de Física, Fac. de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
Lab. Ionosferico Armada R.A., Provincia de Buenos Aires, Argentina
Departamento de Física, Fac. de Ciencias Exactas y Naturales, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Lab. Ionosferico Armada R.A., Av. del Libertador 324, Provincia de Buenos Aires, Argentina
Palabras clave:Atmospheric movements; Buoyancy; Meteorological balloons; Sounding apparatus; Spectrum analysis; Temperature measurement; Troposphere; Balloons; Spectrum analysis; Stratospheric balloons; Atmospheric temperature; Meteorological balloons; balloon measurement; spectral analysis; stratosphere; temperature profile; Argentina, Andes; Atmospheric conditions; Buoyancy frequency; Current saturation; Lower stratosphere; Spectral amplitude; Stratospheric balloon; Temperature profiles; Vertical resolution
Año:1997
Volumen:24
Número:9
Página de inicio:1079
Página de fin:1082
DOI: http://dx.doi.org/10.1029/97GL01024
Título revista:Geophysical Research Letters
Título revista abreviado:Geophys. Res. Lett.
ISSN:00948276
CODEN:GPRLA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00948276_v24_n9_p1079_DeLaTorre

Referencias:

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  • Beatty, T.J., Hosteler, C.A., Gardner, C.S., Lidar observations of gravity waves and their spectra near the mesopause and stratopause at Arecibo (1992) J. Atmos. Sci., 49, pp. 477-496
  • Brigham, E.O., (1973) The Fast Fourier Transform, 246p. , Prentice-Hall, New Jersey
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  • De La Torre, A., Teitelbaum, H., Vial, F., Stratospheric and tropospheric gravity wave measurements near the Andes Mountains (1996) J. Atmos. Terr. Phys., 58, pp. 521-530
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Citas:

---------- APA ----------
De La Torre, A., Alexander, P. & Giraldez, A. (1997) . High-resolution temperature profiles measured with stratospheric balloons near the Andes Mountains. Geophysical Research Letters, 24(9), 1079-1082.
http://dx.doi.org/10.1029/97GL01024
---------- CHICAGO ----------
De La Torre, A., Alexander, P., Giraldez, A. "High-resolution temperature profiles measured with stratospheric balloons near the Andes Mountains" . Geophysical Research Letters 24, no. 9 (1997) : 1079-1082.
http://dx.doi.org/10.1029/97GL01024
---------- MLA ----------
De La Torre, A., Alexander, P., Giraldez, A. "High-resolution temperature profiles measured with stratospheric balloons near the Andes Mountains" . Geophysical Research Letters, vol. 24, no. 9, 1997, pp. 1079-1082.
http://dx.doi.org/10.1029/97GL01024
---------- VANCOUVER ----------
De La Torre, A., Alexander, P., Giraldez, A. High-resolution temperature profiles measured with stratospheric balloons near the Andes Mountains. Geophys. Res. Lett. 1997;24(9):1079-1082.
http://dx.doi.org/10.1029/97GL01024