Implementation of a three-dimensional echo core tracking program: Implications for cloud growth estimations in the midwest

Nancy Westcott, Mary Schoen Petersen

Research output: Contribution to conferencePaper

Abstract

In Illinois, the 1989 Precipitation Augmentation for Crops Experiment (PACE) was carried out to document whether seeding of cumulus congestus clouds by ejecting silver iodide (AgI) flares just beneath cloud top (approximately-10°C), could alter early cloud growth properties causing the clouds to grow larger (Changnon, et al. , 1991). It was found that many of the individual reflectivity cores associated with the treated clouds (AgI or sand) were very complex in nature and that their histories would best be defined with the intervention of a radar analyst. Thus, an interactive core tracking program (ICORT) was developed. This program differs from others in that it is interactive, it operates on three-dimensional data, and it tracks individual echo reflectivity cores. This study examined the properties of 67 echo cores in light of the tracking procedures, the inherent properties of the radar data, and aircraft measuremens made at -10°C during treatment, and with regard to the variablility of core properties.

Original languageEnglish (US)
Pages475-477
Number of pages3
StatePublished - Jan 1 1993
Event26th International Conference on Radar Meteorology - Norman, OK, USA
Duration: May 24 1993May 28 1993

Other

Other26th International Conference on Radar Meteorology
CityNorman, OK, USA
Period5/24/935/28/93

ASJC Scopus subject areas

  • Engineering(all)

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    Westcott, N., & Petersen, M. S. (1993). Implementation of a three-dimensional echo core tracking program: Implications for cloud growth estimations in the midwest. 475-477. Paper presented at 26th International Conference on Radar Meteorology, Norman, OK, USA, .