Lagrangian calculations of raindrop growth in shallow convective clouds based on kinematic fields obtained through dual-Doppler data syntheses

Marcin J. Szumowski, Harry T. Ochs, Robert M Rauber

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A research is carried out to examine the effects of cloud-scale flow on drop growth and investigate if accretion alone can produce raindrops of sizes similar to those observed by the aircraft. A simple lagrangian collection model is used to produce drop-growth trajectory analyses using temporally evolving dual-Doppler-derived wind fields, interpolated to a three-dimensional grid. Radial velocity measurements are first synthesized on a Cartesian grid every 2.5 to 5 minutes. Drop trajectories are initialized at various positions in the lower part of the cloud. A range of initial droplet sizes between 30 and 100 mm diameter are used. The gridded velocity are interpolated to the position of the particle using a four-dimensional interpolating scheme. The interpolated values are then used in a first-order-accurate forward-in-time integration scheme to calculate drop-growth trajectories.

Original languageEnglish (US)
Title of host publicationInternational Conference on Radar Meteorology
Editors Anon
PublisherAmerican Meteorological Soc
Pages470-472
Number of pages3
StatePublished - 1995
EventProceedings of the 1995 27th Conference on Radar Meteorology - Vail, CO, USA
Duration: Oct 9 1995Oct 13 1995

Other

OtherProceedings of the 1995 27th Conference on Radar Meteorology
CityVail, CO, USA
Period10/9/9510/13/95

ASJC Scopus subject areas

  • Engineering(all)

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