The influence of Microphysics in the Formation of Intense Wake Lows: A Numerical Modeling Study

dc.contributor.author Gallus, William
dc.contributor.department Geological and Atmospheric Sciences
dc.date 2020-12-20T01:58:07.000
dc.date.accessioned 2021-02-25T23:44:21Z
dc.date.available 2021-02-25T23:44:21Z
dc.date.copyright Mon Jan 01 00:00:00 UTC 1996
dc.date.issued 1996-10-01
dc.description.abstract <p>A two-dimensional cloud model is used to investigate whether microphysical processes alone within the stratiform rain regions of mesoscale convection systems can induce strong descent and intense surface wake lows accompanying such systems. Idealized simulations are run with a domain that captures the back edge of the stratiform rain region. A simplified microphysical field, representing snow alone, is prescribed within the stratiform cloud to produce radar reflectivities similar to observations. When the prescribed snow field is assumed time-independent, strong subsidence develops but does not induce an intense wake low since microphysical cooling strongly opposes adiabatic warming. Simply increasing snow quantities, although resulting in heavier rain rates and stronger subsidence, does not produce significant pressure falls. However, when precipitation rates are prescribed to decrease with time as might occur with collapsing precipitation cores, subsidence induces greater pressure falls, and a tighter pressure gradient near the wake low, in better agreement with observations.</p>
dc.description.comments <p>This article is published as Gallus Jr, William A. "The influence of microphysics in the formation of intense wake lows: A numerical modeling study." <em>Monthly Weather Review</em> 124, no. 10 (1996): 2267-2281. DOI: <a href="https://doi.org/10.1175/1520-0493(1996)124<2267:TIOMIT>2.0.CO;2" target="_blank">10.1175/1520-0493(1996)1242.0.CO;2</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/ge_at_pubs/322/
dc.identifier.articleid 1339
dc.identifier.contextkey 20708707
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ge_at_pubs/322
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/96344
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/ge_at_pubs/322/1996_GallusWilliam_InfluenceMicrophysics.pdf|||Fri Jan 14 23:35:25 UTC 2022
dc.source.uri 10.1175/1520-0493(1996)124<2267:TIOMIT>2.0.CO;2
dc.subject.disciplines Meteorology
dc.title The influence of Microphysics in the Formation of Intense Wake Lows: A Numerical Modeling Study
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 782ee936-54e9-45de-a7e6-2feb462aea2a
relation.isOrgUnitOfPublication 29272786-4c4a-4d63-98d6-e7b6d6730c45
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