Doppler Velocities at Orthogonal Polarizations in Radar Echoes From Insects and Birds

Author

Melnikov, Vitaly ; Leskinen, Matti ; Koistinen, Jarmo

Author_Institution

NOAA/Office of Oceanic & Atmos. Res.NSSL, Univ. of Oklahoma, Norman, OK, USA

Volume

11

Issue

3

fYear

2014

fDate

Mar-14

Firstpage

592

Lastpage

596

Abstract

The differential Doppler velocities (DDVs) measured with weather radar at horizontal and vertical polarizations in echoes from insects and birds are considered. In weather echoes, DDV is usually less than 0.5 ms^{- 1}, whereas in echoes from flying birds and insects, it can reach 5-7 ms^{- 1}. Such large difference can be used as an additional parameter in distinguishing between weather and nonmeteorological echoes. It is shown that large values of DDV pertain to multipeaked Doppler spectra with different spectral differential reflectivity values in the peaks.

Keywords

Doppler radar; meteorological radar; radar polarimetry; Doppler spectra; Doppler velocitiy; differential Doppler velocities; flying birds; nonmeteorological echo; orthogonal polarizations; radar echoes; spectral differential reflectivity; weather echoes; weather radar; Birds; Doppler effect; Doppler radar; Insects; Meteorology; Radar polarimetry; Differential Doppler velocity (DDV); radar echo from birds and insects; radar polarimetry;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing Letters, IEEE

Publisher

ieee

ISSN

1545-598X

Type

jour

DOI

10.1109/LGRS.2013.2272011

Filename

6567947