The dominant role of semi-arid ecosystems in the trend and variability of the land CO2 sink
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The dominant role of semi-arid ecosystems in the trend and variability of the land CO2 sink. / Ahlström, Anders; Raupach, Michael R.; Schurgers, Guy; Smith, Benjamin; Arneth, Almut; Jung, Martin; Reichstein, Markus; Canadell, Josep G.; Friedlingstein, Pierre; Jain, Atul K.; Kato, Etsushi; Poulter, Benjamin; Sitch, Stephen; Stocker, Benjamin D.; Viovy, Nicolas; Wang, Ying Ping; Wiltshire, Andy; Zaehle, Soenke; Zeng, Ning.
In: Science, Vol. 348, No. 6237, 22.05.2015, p. 895-899.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - The dominant role of semi-arid ecosystems in the trend and variability of the land CO2 sink
AU - Ahlström, Anders
AU - Raupach, Michael R.
AU - Schurgers, Guy
AU - Smith, Benjamin
AU - Arneth, Almut
AU - Jung, Martin
AU - Reichstein, Markus
AU - Canadell, Josep G.
AU - Friedlingstein, Pierre
AU - Jain, Atul K.
AU - Kato, Etsushi
AU - Poulter, Benjamin
AU - Sitch, Stephen
AU - Stocker, Benjamin D.
AU - Viovy, Nicolas
AU - Wang, Ying Ping
AU - Wiltshire, Andy
AU - Zaehle, Soenke
AU - Zeng, Ning
PY - 2015/5/22
Y1 - 2015/5/22
N2 - The growth rate of atmospheric carbon dioxide (CO2) concentrations since industrialization is characterized by large interannual variability, mostly resulting from variability in CO2 uptake by terrestrial ecosystems (typically termed carbon sink). However, the contributions of regional ecosystems to that variability are not well known. Using an ensemble of ecosystem and land-surface models and an empirical observation-based product of global gross primary production, we show that the mean sink, trend, and interannual variability in CO2 uptake by terrestrial ecosystems are dominated by distinct biogeographic regions. Whereas the mean sink is dominated by highly productive lands (mainly tropical forests), the trend and interannual variability of the sink are dominated by semi-arid ecosystems whose carbon balance is strongly associated with circulation-driven variations in both precipitation and temperature.
AB - The growth rate of atmospheric carbon dioxide (CO2) concentrations since industrialization is characterized by large interannual variability, mostly resulting from variability in CO2 uptake by terrestrial ecosystems (typically termed carbon sink). However, the contributions of regional ecosystems to that variability are not well known. Using an ensemble of ecosystem and land-surface models and an empirical observation-based product of global gross primary production, we show that the mean sink, trend, and interannual variability in CO2 uptake by terrestrial ecosystems are dominated by distinct biogeographic regions. Whereas the mean sink is dominated by highly productive lands (mainly tropical forests), the trend and interannual variability of the sink are dominated by semi-arid ecosystems whose carbon balance is strongly associated with circulation-driven variations in both precipitation and temperature.
U2 - 10.1126/science.aaa1668
DO - 10.1126/science.aaa1668
M3 - Journal article
C2 - 25999504
VL - 348
SP - 895
EP - 899
JO - Science
JF - Science
SN - 0036-8075
IS - 6237
ER -
ID: 140390786