A GRAPHICAL METHOD FOR PREPARING 1000-MILLIBAR PROGNOSTIC CHARTS

Richard J. Reed University of Washington

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Abstract

A method is presented for preparing 1000-millibar (surface) prognostic charts. The method makes use of the graphical technique developed by Fjörtoft and is based on a baroclinic model which resembles closely that employed by Estoque in the prediction of cyclone development.

Three cases tested to date have yielded correlations of 0.93, 0.89 and 0.88 between predicted and observed 1000-mb height changes.

Abstract

A method is presented for preparing 1000-millibar (surface) prognostic charts. The method makes use of the graphical technique developed by Fjörtoft and is based on a baroclinic model which resembles closely that employed by Estoque in the prediction of cyclone development.

Three cases tested to date have yielded correlations of 0.93, 0.89 and 0.88 between predicted and observed 1000-mb height changes.

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