A Statistical Analysis of a Convective Boundary Layer Over Lake Michigan on 10 January 1984
Abstract
This research has focused on the continued study and analysis of data collected over Lake Michigan by NCAR research aircraft during a northerly flow cold-air outbreak on 10 Jan 84 during the Lake Effect Snow Studies (LESS) project. Turbulence statistics including variances, covariances, TKE, skewness and buoyancy have been calculated from 20Hz data for u,v,w,theta sub v and q for a strategically selected 30km flight segment and the two contiguous 15km flight segments that comprise such. Emphasis is placed on the interpretation and comparison among the LESS results as well as those for the Air Mass Transformation EXperiment (AMTEX), the Mesoscale Air-Sea EXchange (MASEX) experiment and the models of Deardorff (1980) and Moeng(1984). Of particular interest are the vertical profiles of normalized buoyancy (B) and vertical velocity skewness (S sub w) for the LESS results, where the former shows a primary maximum at level 1 and a secondary maximum at level 4 with the latter most likely due to condensational heating.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1991
- Accession Number
- ADA249449
Entities
People
- Daniel M. Rozema
Organizations
- Air Force Institute of Technology