Extreme Minimum Winter Temperatures in Ohio

Thumbnail Image



Journal Title

Journal ISSN

Volume Title


Research Projects

Organizational Units

Journal Issue


The Extreme Minimum Winter Temperature (EMWT) is the coldest temperature recorded each winter at a given weather station. This variable is a measure of winter temperature severity. EMWT influences the geographic distribution of plants, and is a prime control for the production of some fruit crops grown in Ohio. EMWT values are often used to map plant hardiness zones, but climatic variables rarely remain constant over time, and plant hardiness zones could shift significantly if the climate of Ohio changes and there is a change in EMWTs. EMWTs from 89 weather stations in Ohio were analyzed to determine spatial patterns and time trends. Summary statistics of EMWTs were tabulated and mean EMWT was mapped at a large scale. Linear and polynomial regression were utilized to examine the time series. EMWTs have not warmed during the climatic record of this variable. There does not appear to be a link between EMWTs in Ohio and the increasing levels of CO2 in the atmosphere. The present study demonstrates the need for more research in applied climatology based on observed climate records, not obscured by the assumptions of the global warming paradigm.


Author Institution: Department of Geography, Firelands College, Bowling Green State University



The Ohio Journal of Science. v94, n3 (June, 1994), 41-54