Numerical Simulation and in the Yellow River Analysis of a Squall Line Case and Huaihe River Basins
Abstract：Using NCEP 1°×1° reanalysis data and soundings data, a severe squall line case on June 3, 2009 in the Yellow River and Huaihe River basins was analyzed, and the case was simulated by the WRF model and studied further. Results showed that squall line was created by the horizontal trough behind the northeast cold vortex leading cold air to a southward movement and meeting with south warm moist air. The area near the ground dry line was a high incidence of thunderstorms and squall lines. Squall line occurred in the occasion of upper-level jet weakening and before the low-level jet establishing. The change of U and V wind component in upper and low level jet had some indicating significance. The locations of precipitation and strong wind in squall line were varied in different stages.
Keywords：squall linedry linejetnumerical simulation
Publication Date：2012-05-26
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 54-58 )