Prediction of Global Cloud Cover with a Very High Resolution Global Spectral Model.

Abstract

The completed research is in the area of cloud prediction with a high resolution global model. We have extended our studies on the handling of implicit clouds (i.e. clouds specified as a function of prevailing humidity). We have also examined this problem in the context of rainfall initialization (called physical initialization). We demonstrate a strong positive impact on cloud forecasts from such an initialization. We have also made a start on the problem of explicit cloud forecasts using cloud water mixing ratio and cloud fractions as basic forecast variables. Our preliminary results, described in the final report, are very encouraging. Mannoji (1994) has in fact noted a slight superiority of the explicit over the implicit scheme. That work was performed using a low resolution global model. Further work on the improvement of the explicit scheme at higher resolution is required. Cloud prediction, Global modelling of clouds.

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Document Details

Document Type
Technical Report
Publication Date
May 03, 1994
Accession Number
ADA279944

Entities

People

  • T. N. Krishnamurti

Organizations

  • Florida State University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Artificial Satellites
  • Boundary Layer
  • Climate Change
  • Cloud Cover
  • Doppler Effect
  • Grids
  • Heat Energy
  • High Resolution
  • Humidity
  • Latent Heat
  • Measurement
  • Meteorology
  • Precipitation
  • Radiative Transfer
  • Tensile Strength
  • Weather Forecasting

Fields of Study

  • Environmental science

Readers

  • Atmospheric Science/Meteorology
  • Computational Fluid Dynamics (CFD)