Interaction of the Cold Conveyor Belt with Polar Jet Streaks.
Abstract
Evaluation of the interaction of the low level Cold Moist Conveyor Belt (CMCB) with upper level jet streaks is accomplished using isentropic surfaces. Primary goals are: 1) to assess where the CMCB flows with respect to the low level flow and upper level jet streak; 2) to demonstrate that the CMCB plays a part in the transverse circulations for the upper jet streak entrance and exit regions; and 3) to isolate which physical parameters play an important role in modifying the low level transverse circulations of the CMCB as related to upper level jet streaks. Attempts to identify certain physical forcing mechanisms related to het streaks revealed mixed results. Comparisons of the orientation of vertical motion fields in CMCB to jet streaks indicated varied contributions by diffluence, warm advection, jet streaks, and curvature in jet exit region. In jet entrance region, more consistent contributions by cold air devection, confluence, and curvature were observed compatable with several theoretical and observational studies on curved jet streaks in the entrance region. (These)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1987
- Accession Number
- ADA186774
Entities
People
- William D. Nicholas
Organizations
- Air Force Institute of Technology