CFLOS4D Accuracy Assessment Using Whole Sky Imager Data.

Abstract

The CFLOS4D and CFARC simulation programs are based on several fundamental models of clouds and cloud cover effects. Validating these programs, therefore, requires an approach which recognizes their inherent hierarchical nature. This report describes the hierarchical model validation and associated analyses of the CFLOS4D program using data collected by the WSI system. Specifically, we discuss the rigorous methodology used to compare WSI (Whole Sky Imager) data-derived results with simulator predictions at the system level and to perform data requirements analyses which determine the quantity of WSI data needed to assess simulator utility within specified accuracy. We then discuss several investigations at the model component level, including models governing the probability of a cloud-free-line-of-sight (CFLOS), CFLOS recurrence and persistence frequencies and sky cover temporal and spatial correlations.

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Document Details

Document Type
Technical Report
Publication Date
Apr 18, 1991
Accession Number
ADA239179

Entities

People

  • Kenneth B. Macnichol
  • Steven R. Finch

Organizations

  • TASC, Inc

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Artificial Satellites
  • Cloud Cover
  • Consistency
  • Data Analysis
  • Data Science
  • Data Sets
  • Databases
  • Ground Based
  • Information Science
  • Line Of Sight
  • Monte Carlo Method
  • Probability
  • Simulations
  • Simulators
  • Statistical Tests
  • Time Intervals

Readers

  • Atmospheric Remote Sensing.
  • Computational Modeling and Simulation