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Global Angular Momentum Fluxes in Height Coordinates

Egger, Joseph and Hoinka, Klaus-Peter (2011) Global Angular Momentum Fluxes in Height Coordinates. Monthly Weather Review, 139, pp. 2552-2560. DOI: 10.1175/2010MWR3514.1.

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Official URL: http://journals.ametsoc.org/doi/abs/10.1175/2010MWR3514.1

Abstract

While time and zonal mean budgets of axial angular momentum (AAM) have been presented in pressure coordinates and also in isentropic coordinates, AAM budgets in height coordinates have not been published yet. The results of such an analysis on the basis of the 40-yr European Centre for Medium-Range Weather Forecasts (ECMWF) Re-Analysis (ERA-40) winter data are presented in this paper, which includes explicitly evaluated vertical eddy fluxes of momentum and mass as new features. As expected, AAM fluxes related to the Hadley cell are dominant. Transient vertical AAM fluxes are directed upward at the midlatitudes. Transient mass transports are not negligible, while triple terms are unimportant. Problems with the global balance of torques acting at the surface are discussed as well as those of mass conservation.

Document Type:Article
Title:Global Angular Momentum Fluxes in Height Coordinates
Authors:
AuthorsInstitution or Email of Authors
Egger, JosephUniv. München, München
Hoinka, Klaus-PeterUNSPECIFIED
Date:2011
Journal or Publication Title:Monthly Weather Review
Refereed publication:Yes
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:139
DOI:10.1175/2010MWR3514.1
Page Range:pp. 2552-2560
Status:Published
Keywords:Angular momentum, Fluxes, Streamfunction, Winter/cool season, Hadley circulation
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 > Cloud Physics and Traffic Meteorology
Deposited By: Jana Freund
Deposited On:05 Sep 2011 12:25
Last Modified:13 Feb 2013 15:04

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