Heat and Moisture Budgets of an Extratropical Cyclone Based on Navy Operational Regional Atmospheric Prediction System (NORAPS) Analyses and Forecasts.

Abstract

Navy Operational Regional Atmospheric Prediction System (NORAPS) analyses and forecasts with 80 km resolution are used to investigate the rapid development of an extratropical cyclone during 28-29 March 1984 over the southeastern United States. The lateral transport of vorticity strongly contributes to the spin-up of the low-level cortex. Diabatic heating and moistening rates are estimated within 500 km of the storm from quasi-Lagrangian heat and moisture budgets and compared with the same rates internally predicted within the NORAPS model. The diagnosed maximum diabatic heating and moistening from analyses agree within 100 mb in elevation and 6 h in time with the model-predicted values. The model-predicted diabatic heating and moistening rates are 50% to 100% greater than diagnosed budget calculations due to an incorrect specification of the moistening and heating rates in NORAPS. Compared to more intense cases of explosive maritime cyclogenesis, the higher level and lower magnitude of maximum diabatic heating is consistent with the weaker deepening rate and continental nature of this storm. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1986
Accession Number
ADA174494

Entities

People

  • Robert E. Rau Jr

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Counter IED
  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acquisition
  • Boundary Layer
  • Budgets
  • Convection
  • Coordinate Systems
  • Cyclones
  • Data Acquisition
  • Energy Conversion
  • Geography
  • Grids
  • Heat Energy
  • Latent Heat
  • Meteorology
  • Oceanography
  • Research Facilities
  • United States
  • Weather Forecasting

Fields of Study

  • Environmental science

Readers

  • Atmospheric Science/Meteorology