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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 27, issue 2
Ann. Geophys., 27, 547–553, 2009
https://doi.org/10.5194/angeo-27-547-2009
© Author(s) 2009. This work is distributed under
the Creative Commons Attribution 3.0 License.
Ann. Geophys., 27, 547–553, 2009
https://doi.org/10.5194/angeo-27-547-2009
© Author(s) 2009. This work is distributed under
the Creative Commons Attribution 3.0 License.

  02 Feb 2009

02 Feb 2009

Retrieval of static stability parameter from the radiosonde/rawinsonde ascent rate profiles: a wavelet approach

Prakash M. Dolas*,1 and Karanam Kishore Kumar1 Prakash M. Dolas and Karanam Kishore Kumar
  • 1Space Physics Laboratory, Vikram sarabhai space center, Thiruvananthapuram-695022, India
  • *now at: Rajiv Gandhi Science and Technology Commission, Govt. of Maharashtra, India

Abstract. In the present communication a novel method is presented to derive the altitude profile of Brunt-Väisälä period from the ascent rate profile of sounding balloons. The basic premise of the present method is that the oscillations in the ascent rate of the balloon will have the signature of Brunt-Väisälä frequency, which can be retrieved by using sophisticated spectral tools. We employ wavelet transforms to arrive at the Brunt-Väisälä period profile. Comparison of retrieved Brunt-Väisälä periods with the values derived from the temperature data available from the same radiosonde ascent shows good agreement. Retrieving the atmospheric temperature from the height profile of Brunt-Väisälä period is also discussed in the present communication. We have shown that it is possible to estimate the Brunt-Väisälä period and temperature profiles from the rawinsonde ascent rate data alone where temperature sounding is not available.

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