Accession Number:

ADA429211

Title:

Turbulent and Mesoscale Flow in Stable Conditions

Descriptive Note:

Final rept. 21 Jun 1999-20 Jun 2002

Corporate Author:

OREGON STATE UNIV CORVALLIS COLL OF OCEANIC AND ATMOSPHERIC SCIENCES

Personal Author(s):

Report Date:

2002-06-20

Pagination or Media Count:

4.0

Abstract:

The structure of the nocturnal boundary layer has been examined using seven levels of eddy correlation data on the main tower in CASES99 data. Turbulence generated above the nocturnal surface layer and below the nocturnal jet intermittently bursts downward toward the surface This flow regime cannot be properly modeled within existing formulations. A z-less formulation of the transport is combined with a traditional model to improve simulation of these conditions. The relationship between advection of turbulence and local shear-generation of turbulence is examined using the network of eddy correlation stations in CASES99. Advection of turbulent patches significantly influences the relationship between turbulence and shear as viewed using a single tower.

Subject Categories:

  • Meteorology
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE