INVESTIGADORES
DE LA TORRE Alejandro
artículos
Título:
High-resolution temperature profiles measured with stratospheric balloons near the Andes Mountains
Autor/es:
A. DE LA TORRE, P. ALEXANDER, A. GIRALDEZ
Revista:
GEOPHYSICAL RESEARCH LETTERS
Editorial:
AMER GEOPHYSICAL UNION
Referencias:
Lugar: wASHINGTON; Año: 1997 vol. 24 p. 1079 - 1082
ISSN:
0094-8276
Resumen:
A spectral analysis of two balloon soundings of temperaturep erformedi n the tropospherea nd lower stratosphere over the Andes Mountains in Argentina with a vertical resolution of 10 m has been performed. The first and seconds oundingsl,a unched 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 suggestedb y other authorsa nd topographys eemst o 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. Introduction
