Early snowmelt significantly enhances boreal springtime carbon uptake

• DOI: 10.1073/pnas.1707889114
• Publication Date: 2017-10-03T00:40:29Z
• Authors: Jouni Pulliainen; Mika Aurela; Tuomas Laurila; Tuula Aalto; Matias Takala; Miia Salminen; Markku Kulmala; Alan Barr; Martin Heimann; Anders Lindroth; Ari Laaksonen; Chris Derksen; Annikki Mäkelä; Tiina Markkanen; Juha Lemmetyinen; Jouni Susiluoto; Sigrid Dengel; Ivan Mammarella; Juha-Pekka Tuovinen; Timo Vesala
• Keywords: Snowmelt; Carbon sink; Sink (geography); Carbon flux

Significance We quantified a 36-y trend of advanced spring recovery carbon uptake across the northern hemisphere boreal evergreen forest zone. From this trend, we estimated corresponding change in global gross primary production (GPP) and further magnitude spatiotemporal variability GPP, that is, cross-photosynthetic by forest. Our main findings are following: ( i ) developed proxy indicator for from situ flux data on CO 2 exchange recent satellite snowmelt products ii established relation between to assess changes springtime showing major advance sink.