Journal article

Human contribution to the lengthening of the growing season during 1950-99

Nikolaos Christidis, Peter A Stott, Simon Brown, David J Karoly, John Caesar

JOURNAL OF CLIMATE | AMER METEOROLOGICAL SOC | Published : 2007

Abstract

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 and largely due to the earlier onset of spring, rather than the later ending of autumn. The growing season length, based on exceedence of local temperature thresholds, has a rate of increase of about 1.5 days ..

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University of Melbourne Researchers