Observations of convective thermals with weather radar

Melnikov, Valery; Zrnić, Dusan S.

doi:10.1175/JTECH-D-17-0068.1

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Observations of convective thermals with weather radar

2017
By Melnikov, Valery ; Zrnić, Dusan S.
Source: Journal of Atmospheric and Oceanic Technology, 34(7), 1585-1590

[PDF-2.48 MB]

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Journal Title:

Journal of Atmospheric and Oceanic Technology
Personal Author:

Melnikov, Valery ; Zrnić, Dusan S.

Melnikov, Valery ; Zrnić, Dusan S. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; NSSL (National Severe Storms Laboratory) ; CIMMS (Cooperative Institute for Mesoscale Meteorological Studies)

OAR (Oceanic and Atmospheric Research) ; NSSL (National Severe Storms Laboratory) ; CIMMS (Cooperative Institute for Mesoscale Meteorological Studies) Less -
Description:

It is shown that the NEXRAD weather radar with enhanced detectability is capable of observing the evolution of convective thermals. The fields of radar differential reflectivity show that the upper parts of the thermals are observable due to Bragg scatter, whereas scattering from insects dominates in the lower parts. The thermal-top rise rate is between 1.5 and 3.7 m s−1 in the analyzed case. Radar observations of thermals also enable estimations of their maximum heights, horizontal sizes, and the turbulent dissipation rate within each thermal. These attributes characterize the intensity of convection.
Keywords:

[+]

Radars/Radar Observations Weather Radar Signal Processing
Source:

Journal of Atmospheric and Oceanic Technology, 34(7), 1585-1590
DOI:

https://doi.org/10.1175/JTECH-D-17-0068.1
Document Type:

Journal Article
Funding:

Grant no. NA17RJ1227
Rights Information:

Other
Compliance:

Submitted
Main Document Checksum:

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urn:sha256:aecd8aacd3c037b90b834e99ea9858a0674d365d57f544e3c012d8b75d4259b0
Download URL:

https://repository.library.noaa.gov/view/noaa/32332/noaa_32332_DS1.pdf
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Observations of convective thermals with weather radar

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