Growing season extension and its impact on terrestrial carbon cycle in the Northern Hemisphere over the past 2 decades

Piao, Shilong; Friedlingstein, Pierre; Ciais, Philippe; Viovy, Nicolas; Demarty, Jérôme

doi:10.1029/2006gb002888

articleGlobal Biogeochemical CyclesSep 1, 2007BRONZE OA

Growing season extension and its impact on terrestrial carbon cycle in the Northern Hemisphere over the past 2 decades

SPShilong Piao PFPierre Friedlingstein PCPhilippe Ciais NVNicolas Viovy JDJérôme Demarty

Centre National de la Recherche Scientifique · Commissariat à l'Énergie Atomique et aux Énergies Alternatives · +2 more institutions

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Abstract

A number of studies have suggested that the growing season duration has significantly lengthened during the past decades, but the connections between phenology variability and the terrestrial carbon (C) cycle are far from clear. In this study, we used the “ORganizing Carbon and Hydrology In Dynamic Ecosystems” (ORCHIDEE) process based ecosystem model together with observed climate data to investigate spatiotemporal changes in phenology and their impacts on carbon fluxes in the Northern Hemisphere (>25°N) during 1980–2002. We found that the growing season length (GSL) has increased by 0.30 days yr −1 (R 2 = 0.27, P = 0.010), owing to the combination of an earlier onset in spring (0.16 days yr −1 ) and a…

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Topics & keywords

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Keywords

Phenology
Growing season
Primary production
Northern Hemisphere
Carbon cycle
Ecosystem
Environmental science
Terrestrial ecosystem

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