Numerical simulation of cold surges.
numericalsimulat00harr.pdf (4.318Mb)Abstract
A global, six-level primitive equation model was numerically
integrated to examine the interaction of a planetary
wave
with a growing mid-latitude baroclinic wave. The
purpose of this study was to determine the contribution of
the baroclinic wave to the initiation of a monsoon surge.
Three experiments were run. Experiment I depicted the
effect of the planetary wave on the southward migration of
cold air. The cyclogenesis of a mid-latitude baroclinic
wave was shown in Experiment II. Experiment III combined
the growing baroclinic wave with the stable planetary wave
in an attempt to simulate a cold surge. Characteristics of
a monsoon surge were present in the numerical simulation but
not to the extent or detail of observed surges . The results
indicated the important role of planetary wave advections
in the formation of cold surges.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
Related items
Showing items related by title, author, creator and subject.
-
Interactions between synoptic and planetary scales of motion
(1987-12);The effects of synoptic waves on the dynamics of planetary waves are investigated using normal mode analysis. Initialized analyses of the Navy Operational Global Atmospheric Prediction System (NOGAPS) for 19 days between ... -
A case study of high winds induced by upper-level frontogenesis and tropopause folding
(Monterey, California. Naval Postgraduate School, 1997-03);High surface winds over California and the bordering Pacific Ocean resulted in the death of one man and the loss of power to approximately 50,000 residences across the state. These damaging winds are hypothesized to result ... -
Sensitivity of planetary waves to initial conditions and forcing
(1984-12);The sensitivity of planetary waves to various initial conditions and thermal forcing is examined using a linear global primitive equation spectral model. Initial conditions are obtained by switching on a analytic heat ...
