European land CO2 sink influenced by NAO and East-Atlantic Pattern coupling

Large-scale climate patterns control variability in the global carbon sink. In Europe, the North-Atlantic Oscillation (NAO) influences vegetation activity, however the East-Atlantic (EA) pattern is known to modulate NAO strength and location. Using observation-driven and modelled data sets, we show...

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Bibliographic Details
Published in:Nature Communications
Main Authors: Bastos, Ana, Janssens, Ivan A., Gouveia, Celia M., Trigo, Ricardo M., Ciais, Philippe, Chevallier, Frederic, Penuelas, Josep, Roedenbeck, Christian, Piao, Shilong, Friedlingstein, Pierre, Running, Steven W.
Other Authors: Bastos, A (reprint author), Univ Paris Saclay, CEA CNRS UVSQ, LSCE IPSL, Lab Sci Climat & Environm, F-91191 Gif Sur Yvette, France.; Bastos, A (reprint author), Univ Lisbon, Fac Ciencias, IDL, P-1749016 Lisbon, Portugal., Univ Paris Saclay, CEA CNRS UVSQ, LSCE IPSL, Lab Sci Climat & Environm, F-91191 Gif Sur Yvette, France., Univ Lisbon, Fac Ciencias, IDL, P-1749016 Lisbon, Portugal., Univ Antwerp, Dept Biol, Univ Pl 1, B-2610 Antwerp, Belgium., CREAF, Barcelona 08193, Spain., CREAF CSIC UAB, Global Ecol Unit, CSIC, Barcelona 08193, Spain., Max Planck Inst Biogeochem, D-07701 Jena, Germany., Peking Univ, Coll Urban & Environm Sci, Dept Ecol, 5 Yiheyuan Rd, Beijing 100871, Peoples R China., Univ Exeter, Coll Engn Math & Phys Sci, Exeter EX4 4QF, Devon, England., Univ Montana, Numer Terradynam Simulat Grp, Missoula, MT 59812 USA., Bastos, A (reprint author), Univ Lisbon, Fac Ciencias, IDL, P-1749016 Lisbon, Portugal.
Format: Journal/Newspaper
Language:English
Published: NATURE COMMUNICATIONS 2016
Subjects:
ATMOSPHERIC CIRCULATION
CLIMATE FEEDBACKS
CARBON
OSCILLATION
TEMPERATURES
TRANSITION
TRANSPORT
DYNAMICS
DROUGHT
SPRINGS
North Atlantic
North Atlantic oscillation
Online Access:https://hdl.handle.net/20.500.11897/435362
https://doi.org/10.1038/ncomms10315
Description
Summary:Large-scale climate patterns control variability in the global carbon sink. In Europe, the North-Atlantic Oscillation (NAO) influences vegetation activity, however the East-Atlantic (EA) pattern is known to modulate NAO strength and location. Using observation-driven and modelled data sets, we show that multi-annual variability patterns of European Net Biome Productivity (NBP) are linked to anomalies in heat and water transport controlled by the NAO-EA interplay. Enhanced NBP occurs when NAO and EA are both in negative phase, associated with cool summers with wet soils which enhance photosynthesis. During anti-phase periods, NBP is reduced through distinct impacts of climate anomalies in photosynthesis and respiration. The predominance of anti-phase years in the early 2000s may explain the European-wide reduction of carbon uptake during this period, reported in previous studies. Results show that improving the capability of simulating atmospheric circulation patterns may better constrain regional carbon sink variability in coupled carbon-climate models. Portuguese Foundation for Science and Technology [SFRH/BD/78068/2011]; QSECA [PTDC/AAGGLO/4155/2012]; European Research Council Synergy grant [ERC-2013-SyG 610028 IMBALANCE-P] SCI(E) PubMed ARTICLE ana.bastos@lsce.ipsl.fr 10315 7

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