Idealized Modeling Studies of Long-Lived Large Amplitude Inertia Gravity Waves
Abstract
AFOSR/ASSERT funds for FY-99 have been used in support of: (1) continuing research designed to elicit the three-dimensional structure and evolution of large-scale environments conducive to the formation and presence of long-lived large-amplitude inertia-gravity waves (IGW): (2)IGW case studies IGWs in support of (1); and (3) the preparation and submission of manuscripts describing previously completed research findings for formal publication (abstracts are attached elsewhere to this report). The results from (2) show that a significant mesoscale pressure disturbance passes through the Flatland Atmospheric Observatory just after 1600 UTC 28 April 1996. This originated over northeastern KS and is associated with the back edge of a stratiform rain region which extends north of mesoscale convective system. NCEP Reanalyses and NWS soundings show that this convective event occurs in a region with many characteristics of an inertia-gravity wave environment (see report for FYs 97 and 98). The 50 MHz profiler shows that the wave is associated with strong downward motion in the middle troposphere. It is hypothesized that this downward motion penetrates into the low-level stable layer creating substantial adiabatic warming and hence driving the pressure falls observed at the surface.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1999
- Accession Number
- ADA382539
Entities
People
- Daniel Keyser
- Lance F. Bosart
Organizations
- State University of New York at Albany