Journal cover Journal topic
Annales Geophysicae An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 1.585 IF 1.585
  • IF 5-year value: 1.698 IF 5-year
    1.698
  • CiteScore value: 1.62 CiteScore
    1.62
  • SNIP value: 0.820 SNIP 0.820
  • IPP value: 1.52 IPP 1.52
  • SJR value: 0.781 SJR 0.781
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 83 Scimago H
    index 83
  • h5-index value: 24 h5-index 24
Volume 31, issue 11
Ann. Geophys., 31, 2039–2048, 2013
https://doi.org/10.5194/angeo-31-2039-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.
Ann. Geophys., 31, 2039–2048, 2013
https://doi.org/10.5194/angeo-31-2039-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.

Regular paper 21 Nov 2013

Regular paper | 21 Nov 2013

A nonlinear interaction event between a 16-day wave and a diurnal tide from meteor radar observations

K. M. Huang1,3,4, A. Z. Liu2, S. D. Zhang1,3,4, F. Yi1,3,4, C. M. Huang1,3,4, Q. Gan1,3,4, Y. Gong1,3,4, and Y. H. Zhang5 K. M. Huang et al.
  • 1School of Electronic Information, Wuhan University, Wuhan, China
  • 2Department of Physical Sciences, Embry-Riddle Aeronautical University, Daytona Beach, Florida, USA
  • 3Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, Wuhan, China
  • 4State Observatory for Atmospheric Remote Sensing, Wuhan, China
  • 5College of Hydrometeorology, Nanjing University of Information Science and Technology, Nanjing, China

Abstract. Relative to extensive studies of interactions between the quasi 2-day wave and tides, nonlinear interaction of the 16-day wave with tides was reported less, in particular interaction with the diurnal tide. We present an observational study of a possible nonlinear interaction event between the 16-day wave and the diurnal tide based on meteor radar measurement at Maui. An obvious 16-day wave can be observed from raw wind data. Its maximum meridional wind amplitude can attain 18.0 m s−1 at a height of 92 km during the time of our attention, which is larger than that in previous reports. Sum and difference interactions between the 16-day wave and the diurnal tide are observed to have rather different intensities. Because sum nonlinear interaction is very intense, the secondary sum wave with a period of 22.59 h is stronger than the diurnal tide. However, weak spectrum of the secondary difference wave is hardly identified. The beat of the diurnal tide with the secondary sum wave leads to substantial modulation of the diurnal tide at a period of 16 days. Moreover, this strong secondary sum wave further interacts with the 16-day wave to generate a new secondary wave with a period of 21.33 h. Such an interaction may be also regarded as a third-order nonlinear interaction between the 16-day wave and the diurnal tide with two-step interaction. Hence, the third-order nonlinear interaction between planetary waves and tides may occur significantly in the MLT region.

Publications Copernicus
Download
Citation