A Description of the Impact of Changes to NOGAPS Convection Parameterization and the Increase in Resolution to T239L30

Abstract

The purpose of this report is to give a brief account of the recent changes to the Navy Operational Global Atmospheric Prediction System (NOGAPS). These changes include (1) adding middle level convection (Peng et al. 2002) and a simplified ice phase (Emanuel, personal communication) to the cumulus convection scheme, and (2) increasing the spectral resolution from 159 waves (corresponding to a horizontal resolution of 0.75o) to 239 waves (corresponding to 0.5o resolution) and increasing the number of vertical levels from 24 to 30, i.e. the resolution is increased from T159L24 to T239L30. The first change was transitioned in May 2002 and went operational into the T159L24 in June 2002. The second change (T239L30) was transitioned in June 2002 and is scheduled for operational use in September 2002.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2002
Accession Number
ADA605109

Entities

People

  • James A. Ridout
  • Melinda S. Peng
  • Timothy F. Hogan
  • William M. Clune

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Assimilation
  • Boundary Layer
  • Computer Science
  • Convection
  • Data Analysis
  • Gravity Waves
  • Latitude
  • Meteorology
  • Military Research
  • Oceans
  • Quality Control
  • Sea Surface Temperature
  • Statistical Analysis
  • Statistics
  • Surface Temperature
  • Tropical Cyclones
  • Weather Forecasting

Fields of Study

  • Environmental science

Readers

  • Atmospheric Science/Meteorology
  • Civilian Systems Systems Program Capability Development and Upgrade Support Activity Expense and Pay Management.
  • Cybersecurity.