AREAS WITH EXTREME VERTICAL MOMENTUM SHEAR

Abstract

Synoptic patterns of extreme shear of momentum along the vertical are investigated in relation to the concentration of the temperature field at 500 mb. For the United States, it was found in a study of two winters' data that all extreme momentum soundings were contained within an envelope in which the 500- mb. temperature gradient is at least 10 C./3.5 degrees latitude. The probability of occurrence of these critical temperature gradient areas is 2 per cent. Approximately two thirds of such areas have extreme momentum profiles. The median fraction of the areas with critical temperature gradients that have extreme momentum shear is 0.4. Areas with high temperature gradients occurred mainly in the latitude of 40-45 degrees.

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Document Details

Document Type
Technical Report
Publication Date
Aug 04, 1967
Accession Number
AD0828445

Entities

People

  • Herbert Riehl

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Classification
  • Critical Temperature
  • Grids
  • High Temperature
  • Isotherms
  • Jet Streams
  • Latitude
  • Meteorology
  • Momentum
  • New York
  • North America
  • Probability
  • Research Facilities
  • Security
  • Temperature Gradients
  • United States
  • Wind

Fields of Study

  • Environmental science

Readers

  • Ocean-Atmosphere Mesoscale Modeling, Data Assimilation, and Flux Boundary Layers
  • Seismology
  • Thermal Physics or Thermal Science.