Abstract
Abstract. Radio waves propagating in the atmosphere are affected by the prevailing atmospheric state. The state of the atmosphere can cause radio waves to refract more or less towards the ground. When the refractive index of the atmosphere differs from standard atmospheric conditions, the propagation is considered to be anomalous. Radars which are affected by anomalous propagation can observe ground clutter far beyond the radar horizon. In this work, 4.5 years' worth of data from five operational Swedish C-band dual-polarization weather radars are presented. Analyses of the data reveal a strong seasonal cycle and a weaker diurnal cycle in ground clutter from coastal regions across nearby waters. A comparison was drawn between the impacts of anomalous propagation on ground clutter measured with horizontal polarization and vertical polarization, respectively; however, no clear difference was found.
Reference47 articles.
1. Adediji, A., Ajewole, M., and Falodun, S.: Distribution of radio refractivity gradient and effective earth radius factor (k-factor) over Akure, South Western Nigeria, J. Atmos. Sol.-Terr. Phy., 73, 2300–2304, https://doi.org/10.1016/j.jastp.2011.06.017, 2011. a
2. Alberoni, P. P., Andersson, T., Mezzasalma, P., Michelson, D. B., and Nanni, S.: Use of the vertical reflectivity profile for identification of anomalous propagation, Meteorol. Appl., 8, 257–266, https://doi.org/10.1017/S1350482701003012, 2001. a
3. Atkinson, B. W. and Zhu, M.: Coastal effects on radar propagation in atmospheric ducting conditions, Meteorol. Appl., 13, 53–62, https://doi.org/10.1017/S1350482705001970, 2006. a
4. Babin, S. M.: Surface Duct Height Distributions for Wallops Island, Virginia, 1985–1994, J. Appl. Meteorol. Clim., 35, 86–93, https://doi.org/10.1175/1520-0450(1996)035<0086:SDHDFW>2.0.CO;2, 1996. a
5. Battan, L. J.: Radar observation of the atmosphere, The University of Chicago Press, ISBN-10: 1878907271, ISBN-13: 978-1878907271, 1973. a, b, c
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