Publication Date


Document Type


First Advisor

Staver, Allen E.

Degree Name

M.S. (Master of Science)

Legacy Department

Department of Geography


Atmospheric temperature--Middle West; Summer--Middle West; Middle West--Climate


The climatic aspects of Upper Midwestern summer temperature are examined here using several statistical procedures. The region’s areal and temporal variation of summer mean temperatures during the period, 1931 to 1976, are investigated using statistical analyses. Regional summer seasonal mean temperature homogeneity is evaluated to add significance to the analyses which deal with the region’s areal summer season mean temperature variation, A Student-T distribution test which compares the regional summer seasonal mean temperatures with a sample of divisional summer seasonal mean temperatures is used to evaluate homogeneity, Continentality of the region is also discussed in relation to the region’s climatic homogeneity. It must be emphasized that regional summer seasonal mean temperature homogeneity enables any regional variation of summer seasonal mean temperature to be explained more exclusively by effects inherent within the Upper Midwestern summer temperature climate. Statistical procedures used in this study include a cluster analysis which determined years with similar summer seasons using yearly summer month mean temperatures as the clustering criteria, A contingency analysis is used here to measure the summer seasonal mean temperature persistence of four yearly segments derived from the forty-six year period, 1931 to 1976, The region’s seventy-five state climatic divisions are classified into six categories in this study using a discriminant analysis. Classification criteria used for the discriminant procedure were the divisional summer month mean temperature differences from the regional summer month mean temperatures, expressed as the number of regional summer month standard deviations. A multiple regression was also used in this study to deter^- tnine the predictability of the region* s annual summer seasonal mean temperatures using the preceding winter month mean temperatures as predictors. Discussion of the statistical procedures used here is limited to the scope of the study.


Includes bibliographical references.||Includes illustrations and maps.


vi, 86 pages




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