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Use of the vertical reflectivity profile for identification of anomalous propagation
SMHI.
SMHI, Core Services.ORCID iD: 0000-0001-7370-8788
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2001 (English)In: Meteorological Applications, ISSN 1350-4827, E-ISSN 1469-8080, Vol. 8, no 3, 257-266 p.Article in journal (Refereed) Published
Abstract [en]

Anomalous propagation (anaprop), analogous to the upper mirage in the visual wavelengths, is still a major problem in radar meteorology. This phenomenon assumes particular importance in automatic recognition and estimation of rainfall. Anaprop echoes from terrain features such as hills and coasts Often give echoes up to 50-60 dBZ equivalent to heavy rain or hail in severe thunderstorms. Anaprop echoes from sea waves may be comparable in strength to those from moderate precipitation and also form similar patterns. Based on the evidence that the vertical reflectivity profile of precipitation is quite different from the anaprop profile, two methods for anaprop identification are presented. The method proposed by the Servizio Meteorologico Regionale (SMR, Italy) simply uses the operational scan procedure to discriminate between precipitation and anaprop. At the Swedish Meteorological and Hydrological Institute an 'ad hoc' scan strategy has been developed in order to obtain much more detail of the lowest reflectivity profile. A number of statistical parameters have been used to achieve a better discrimination between precipitation, land and sea clutter. A number of case studies, representing different echo intensities and patterns, and including a case of anaprop with embedded precipitation, are presented to assess the impact of these methods.

Place, publisher, year, edition, pages
2001. Vol. 8, no 3, 257-266 p.
National Category
Meteorology and Atmospheric Sciences
Research subject
Meteorology
Identifiers
URN: urn:nbn:se:smhi:diva-1472DOI: 10.1017/S1350482701003012ISI: 000171665400001OAI: oai:DiVA.org:smhi-1472DiVA: diva2:849334
Available from: 2015-08-28 Created: 2015-08-17 Last updated: 2016-04-07Bibliographically approved

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Citation style
  • apa
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