Accession Number:

ADA047372

Title:

Validation and Refinement of the DELFIC Cloud Rise Module

Descriptive Note:

Final rept. 28 Oct-22 Dec 75

Corporate Author:

ATMOSPHERIC SCIENCE ASSOCIATES BEDFORD MA

Personal Author(s):

Report Date:

1977-01-15

Pagination or Media Count:

60.0

Abstract:

The DELFIC Cloud Rise Module is refined to produce best agreement with stabilized cloud top heights observed from 53 nuclear test shots in the yield range from 21 T to 15 MT. Agreement with observed data, for both cloud tops and bases, is shown to be excellent in the yield range from 0.5 T to 15 MT. Simulated cloud rise and growth also are shown to be in accord with observation. DELFIC cloud top height results are compared with results calculated from a power function of yield. The power function is obtained by least squares curve fitting to observed data. DELFIC yields a proportional reduction in variance of cloud top discrepancies in log space of 59 percent. Sensitivity of resulst to model structure and to various parameter values is discussed. Use of the model for very high yields 20 to 100 MT is explored. Limitations of model capability in this yield range are pointed out, and apparent anomalous results are explained. Author

Subject Categories:

  • Meteorology
  • Computer Programming and Software
  • Radioactivity, Radioactive Wastes and Fission Products

Distribution Statement:

APPROVED FOR PUBLIC RELEASE