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Research article2022Peer reviewedOpen access

Jet stream position explains regional anomalies in European beech forest productivity and tree growth

Dorado-Linan, Isabel; Ayarzaguena, Blanca; Babst, Flurin; Xu, Guobao; Gil, Luis; Battipaglia, Giovanna; Buras, Allan; Cada, Vojtech; Julio Camarero, J.; Cavin, Liam; Claessens, Hugues; Drobyshev, Igor; Garamszegi, Balazs; Grabner, Michael; Hacket-Pain, Andrew; Hartl, Claudia; Hevia, Andrea; Janda, Pavel; Jump, Alistair S.; Kazimirovic, Marko;
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The mechanistic pathways connecting ocean-atmosphere variability and terrestrial productivity are well-established theoretically, but remain challenging to quantify empirically. Such quantification will greatly improve the assessment and prediction of changes in terrestrial carbon sequestration in response to dynamically induced climatic extremes. The jet stream latitude (JSL) over the North Atlantic-European domain provides a synthetic and robust physical framework that integrates climate variability not accounted for by atmospheric circulation patterns alone. Surface climate impacts of north-south summer JSL displacements are not uniform across Europe, but rather create a northwestern-southeastern dipole in forest productivity and radial-growth anomalies. Summer JSL variability over the eastern North Atlantic-European domain (5-40E) exerts the strongest impact on European beech, inducing anomalies of up to 30% in modelled gross primary productivity and 50% in radial tree growth. The net effects of JSL movements on terrestrial carbon fluxes depend on forest density, carbon stocks, and productivity imbalances across biogeographic regions.Here the authors show that extremes in the summer jet stream position over Europe create a beech forest productivity dipole between northwestern and southeastern Europe and can result in regional anomalies in forest carbon uptake and growth.

Published in

Nature Communications
2022, Volume: 13, article number: 2015

    UKÄ Subject classification

    Meteorology and Atmospheric Sciences
    Climate Research
    Forest Science

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