Browse Prairie Research Institute by Author "Petersen, Mary Schoen"

  • Czys, Robert R.; Changnon, Stanley A.; Petersen, Mary Schoen; Westcott, Nancy E.; Scot, Robert W. (Illinois State Water Survey, 1993)
    This Part presents figures of the cloud to cloud values of all 191 variables for the 71 "large" or "α" clouds, plus some derived from them, such as two variables calculated using the number of flares fired into the cloud, ...

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  • Petersen, Mary Schoen (Illinois State Water Survey, 1991-10)
    The data are nearly identical to the original hourly surface observations as archived by the National Climatic Data Center (NCDC). The exceptions are the sky condition, cloud coverage, cloud type, and cloud height elements. ...

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  • Petersen, Mary Schoen (Illinois State Water Survey, 1990)
    This study arose from the need for a detailed documentation of the solar radiation (SR) climate of the Midwest region. Because the network of SR measurements for this region is either sparse or lacking in longevity, a ...

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