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Effect of surface friction on the structure of barotropically unstable tropical disturbances

dc.contributor.authorWilliams, R.T.
dc.contributor.authorSchminke, T.K.
dc.contributor.authorNewman, R.L.
dc.date.accessioned2015-07-29T18:24:10Z
dc.date.available2015-07-29T18:24:10Z
dc.date.issued1971-10
dc.identifier.citationMonthly Weather Review, Vol. 99, No. 10, pp. 778-785, October 1971.en_US
dc.identifier.urihttp://hdl.handle.net/10945/45646
dc.description.abstractThe structure of barotropically unstable disturbances in the Tropics is studied with a two-level quasi-geostrophic model. An Ekman layer is attached to the lower boundary. The equations are linearized and the most unstable mode is found numerically by using the initial value technique. Computations are made for a shear-zone wind profile and a jet profile; these fields are independent of height. The disturbance structure is found to be critically dependent on the absolute vorticity gradient in the mean flow. The predicted disturbance structures contain a number of features that are observed in tropical wave disturbances.en_US
dc.description.sponsorshipThis research was partially supported by the Navy Weather Research Facility. The numerical computations were performed by the W.R. Church Computer Center at the Naval Postgraduate School and by the University of Utah Computer Cener.en_US
dc.rightsThis 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.en_US
dc.titleEffect of surface friction on the structure of barotropically unstable tropical disturbancesen_US
dc.typeArticleen_US


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