Monitoring precipitation and lightning via changes in atmospheric gamma radiation

M. B. Greenfield, A. Domondon, S. Tsuchiya, G. Tomiyama

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

Abstract

Atmospheric γ-radiation has been measured since 1999 and recently at three elevations 220m from the first site to ascertain position dependency and optimal elevation for observing γ-rays from radon and radon-progeny found in precipitation. Radiation from time-independent and diurnal components was minimized in order to ascertain the reliability, accuracy and practicality of determining precipitation rates from correlated γ-rates. Data taken with 4-12.9cm3 NaI detectors at elevations above ground of 9.91, 14.2, 15.7, and 21.4 m were fit with a model assuming a surface and/or volume deposition of radon progeny on/in water droplets during precipitation which predicts γ-ray rates proportional to the 2/5 and/or 3/5 power of rain rates, respectively. With mostly surface deposition and age corrections for radon progeny, the correlation coefficients improved with elevation and reached a maximum at 0.95 around 20m. Atmospheric γ radiation enables monitoring precipitation rates to 0.3 mm/h with time resolution limited only by counting statistics. High γ-ray rates, decreasing with 40-minute half-life following lightning may be indirectly due to ions accelerated in electric field.

Original languageEnglish
Title of host publicationApplication of Accelerators in Research and Industry
Subtitle of host publication17th International Conference on the Application of Accelerators in Research and Industry
EditorsJerome L. Duggan, Margaret Hall, Ira Lon Morgan
PublisherAmerican Institute of Physics Inc.
Pages820-825
Number of pages6
ISBN (Electronic)0735401497
DOIs
Publication statusPublished - 2003 Aug 26
Event17th International Conference on the Application of Accelerators in Research and Industry - Denton, United States
Duration: 2002 Nov 122002 Nov 16

Publication series

NameAIP Conference Proceedings
Volume680
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other17th International Conference on the Application of Accelerators in Research and Industry
CountryUnited States
CityDenton
Period02/11/1202/11/16

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Greenfield, M. B., Domondon, A., Tsuchiya, S., & Tomiyama, G. (2003). Monitoring precipitation and lightning via changes in atmospheric gamma radiation. In J. L. Duggan, M. Hall, & I. L. Morgan (Eds.), Application of Accelerators in Research and Industry: 17th International Conference on the Application of Accelerators in Research and Industry (pp. 820-825). (AIP Conference Proceedings; Vol. 680). American Institute of Physics Inc.. https://doi.org/10.1063/1.1619837