• Binder, P., and Coauthors, 1995: Mesoscale Alpine Programme: Design proposal. 65 pp. [Available upon request at MAP Data Centre, ETH Zürich, Switzerland.].

    • Search Google Scholar
    • Export Citation
  • Browning, K. A., , and Wexler R. , 1968: The determination of kinematic properties of a wind field using Doppler radar. J. Appl. Meteor., 7 , 105113.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Doviak, R. J., , and Zrnić D. S. , 1984: Doppler Radar and Weather Observations. Academic Press, 458 pp.

  • Eilts, M. D., , and Smith S. D. , 1990: Efficient dealiasing of Doppler velocities using local environmental constraints. J. Atmos. Oceanic Technol., 7 , 118128.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Germann, U., 1999: Vertical wind profile by Doppler radars. MAP Newsl, 11 .. [Available from MeteoSwiss, Krähbühlstr, 58, CH-8044 Zürich, Switzerland.].

    • Search Google Scholar
    • Export Citation
  • Testud, J., , Breger G. , , Amayenc P. , , Chong M. , , Nutten B. , , and Sauvaget A. , 1980: A Doppler radar observation of a cold front. Three dimensional air circulation, related precipitation system and associated wave-like motions. J. Atmos. Sci., 37 , 7898.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Yamada, Y., , and Chong M. , 1999: VAD-based determination of the Nyquist interval number of Doppler velocity aliasing without wind information. J. Meteor. Soc. Japan, 77 , 447457.

    • Crossref
    • Search Google Scholar
    • Export Citation
All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 134 134 100
PDF Downloads 31 31 2

Real-Time Retrieval of the Wind from Aliased Velocities Measured by Doppler Radars

View More View Less
  • 1 Centre d'étude des Environnements Terrestre et Planétaires, Vélizy, France
  • | 2 MeteoSwiss, Locarno-Monti, Switzerland
© Get Permissions Rent on DeepDyve
Restricted access

Abstract

Doppler radar measurements provide the radial wind within an unambiguous interval due to the limited value of the sampling frequency (pulse repetition frequency). Many algorithms have been developed to retrieve true wind velocities from measured aliased wind velocities. However, these algorithms are time consuming, which can be a constraint in an operational context. Besides, most of them need independent information on the wind generally provided by complementary neighbor measurements such as radiosonde or wind profiler. This paper describes a new method aimed at providing an estimate of the real wind directly from aliased wind measurements without prior dealiasing, allowing the method to be used in real time by operational radars without additional information from other instruments. A potential application of the method is to provide a reference wind profile that can be used, in a second step, to dealias radial velocities.

Corresponding author address: Pierre Tabary, Centre d'étude des Environnements Terrestre et Planétaires, 10/12 avenue de l'Europe, 78140 Vélizy, France.Email: tabary@cetp.ipsl.fr

Abstract

Doppler radar measurements provide the radial wind within an unambiguous interval due to the limited value of the sampling frequency (pulse repetition frequency). Many algorithms have been developed to retrieve true wind velocities from measured aliased wind velocities. However, these algorithms are time consuming, which can be a constraint in an operational context. Besides, most of them need independent information on the wind generally provided by complementary neighbor measurements such as radiosonde or wind profiler. This paper describes a new method aimed at providing an estimate of the real wind directly from aliased wind measurements without prior dealiasing, allowing the method to be used in real time by operational radars without additional information from other instruments. A potential application of the method is to provide a reference wind profile that can be used, in a second step, to dealias radial velocities.

Corresponding author address: Pierre Tabary, Centre d'étude des Environnements Terrestre et Planétaires, 10/12 avenue de l'Europe, 78140 Vélizy, France.Email: tabary@cetp.ipsl.fr

Save