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The vertical component of the geostrophic wind

Egger, Joseph and Hoinka, Klaus-Peter (2017) The vertical component of the geostrophic wind. Quarterly Journal of the Royal Meteorological Society, 143 (704), pp. 1704-1713. Wiley. DOI: 10.1002/qj.3044 ISSN 0035-9009

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Official URL: http://dx.doi.org/10.1002/qj.3044


Motion in planetary geostrophic equations (PGEs) is represented by the three-dimensional geostrophic wind (ug, vg, wg) where ug and vg are the standard horizontal components while the vertical component wg can be derived, for example, from the Richardson equation. However, this vertical component appears not to have been evaluated as yet on the Basis of data nor compared to the actual vertical component w. Part of this missing Information is provided here by an evaluation of wg from observations and by analyzing the role of wg in linear versions of PGEs. The time mean fields wg in the Northern Hemisphere as well as the standard deviations σwg are compared to the correponding fields of w. It is found that wg comes reasonably close to w in the troposphere but deviates widely in the stratosphere while σwg is smaller than σw in the troposphere but not in the stratosphere. Linear wave motion is discussed and the linear steady-state response to the forcing by heat sources and mountains is explored to explain these results.

Item URL in elib:https://elib.dlr.de/116543/
Document Type:Article
Title:The vertical component of the geostrophic wind
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Egger, JosephLMU MünchenUNSPECIFIED
Date:April 2017
Journal or Publication Title:Quarterly Journal of the Royal Meteorological Society
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1002/qj.3044
Page Range:pp. 1704-1713
Keywords:geostrophic wind; planetary geostrophic equations; vertical component
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Atmosphären- und Klimaforschung
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics
Institute of Atmospheric Physics > Transport Meteorology
Deposited By: Volkert, Dr. Hans
Deposited On:05 Dec 2017 07:19
Last Modified:17 Jun 2019 11:47

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