Polarimetric Signatures in the Stratiform Region of a Mesoscale Convective System

Zrnic, DS and Balakrishnan, N and Ziegler, CL and Bringi, VN and Aydin, K and Matejka, T (1993) Polarimetric Signatures in the Stratiform Region of a Mesoscale Convective System. In: Journal of Applied Meteorology, 32 (4). pp. 678-693.

PDF Polo.pdf - Published Version Restricted to Registered users only Download (1MB) | Request a copy

Abstract

Four polarimetric measurands were collected in the stratiform region of a mesoscale convective system. The four are the reflectivity factor, the differential reflectivity, the correlation coefficient between orthogonal copolar echoes, and the differential propagation constant. Most striking is a signature of large aggregates (about 10 mm in size) seen in the differential phase through the melting layer. Another significant feature is an abrupt notch in the correlation coefficient that occurs towards the bottom of the bright band. Aircraft observations and a one-dimensional cloud model are used to explain some polarimetric measurements and to infer the presence of aggregates, graupel, and supercooled cloud water in the stratiform region. These unique observations and model data provide inferences concerning the presence of graupel and the growth of large aggregates in the melting layer.

Item Type:	Journal Article
Publication:	Journal of Applied Meteorology
Publisher:	American Meterological Society
Additional Information:	Copyright of this article belongs to American Meterological Society.
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	23 Feb 2011 05:49
Last Modified:	09 Jan 2013 05:20
URI:	http://eprints.iisc.ac.in/id/eprint/35691

Actions (login required)

View Item