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Journal of Climate
Increasing surface temperatures are expected to result in longer growing seasons. An optimal detection analysis is carried out to assess the significance of increases in the growing season length during 1950-99, and to measure the anthropogenic component of the change. The signal is found to be detectable, both on global and continental scales, and human influence needs to be accounted for if it is to be fully explained. The change in the growing season length is found to be asymmetric anddoi:10.1175/2007jcli1568.1 fatcat:ry5nf2tdtndgpmbtll7ky5yxvi