A Climatological Analysis of the Köppen Dfa/Dfb Boundary in Eastern North America, 1901-1990
In 1952, Jack Villmow proposed a new and more northerly border for the Dfa/Dfb climate boundary in eastern North America. This paper follows from Villmow's work with an improved data set over a longer period and considers the issue of anthropogenically induced global warming as a possible cause for explaining any change in the boundary.
Author Institution: Department of Geography, Mankato State University
The Ohio Journal of Science. v97, n3 (June, 1997), 53-58