Informing climate models with rapid chamber measurements of forest carbon uptake

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Informing climate models with rapid chamber measurements of forest carbon uptake. / Metcalfe, Daniel B.; Ricciuto, Daniel; Palmroth, Sari; Campbell, Catherine; Hurry, Vaughan; Mao, Jiafu; Keel, Sonja G.; Linder, Sune; Shi, Xiaoying; Näsholm, Torgny; Ohlsson, Klas E.A.; Blackburn, M.; Thornton, Peter E.; Oren, Ram.

I: Global Change Biology, Vol. 23, Nr. 5, 01.05.2017, s. 2130-2139.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Harvard

Metcalfe, DB, Ricciuto, D, Palmroth, S, Campbell, C, Hurry, V, Mao, J, Keel, SG, Linder, S, Shi, X, Näsholm, T, Ohlsson, KEA, Blackburn, M, Thornton, PE & Oren, R 2017, 'Informing climate models with rapid chamber measurements of forest carbon uptake', Global Change Biology, vol. 23, nr. 5, s. 2130-2139. https://doi.org/10.1111/gcb.13451

APA

Metcalfe, D. B., Ricciuto, D., Palmroth, S., Campbell, C., Hurry, V., Mao, J., ... Oren, R. (2017). Informing climate models with rapid chamber measurements of forest carbon uptake. Global Change Biology, 23(5), 2130-2139. https://doi.org/10.1111/gcb.13451

CBE

Metcalfe DB, Ricciuto D, Palmroth S, Campbell C, Hurry V, Mao J, Keel SG, Linder S, Shi X, Näsholm T, Ohlsson KEA, Blackburn M, Thornton PE, Oren R. 2017. Informing climate models with rapid chamber measurements of forest carbon uptake. Global Change Biology. 23(5):2130-2139. https://doi.org/10.1111/gcb.13451

MLA

Vancouver

Author

Metcalfe, Daniel B. ; Ricciuto, Daniel ; Palmroth, Sari ; Campbell, Catherine ; Hurry, Vaughan ; Mao, Jiafu ; Keel, Sonja G. ; Linder, Sune ; Shi, Xiaoying ; Näsholm, Torgny ; Ohlsson, Klas E.A. ; Blackburn, M. ; Thornton, Peter E. ; Oren, Ram. / Informing climate models with rapid chamber measurements of forest carbon uptake. I: Global Change Biology. 2017 ; Vol. 23, Nr. 5. s. 2130-2139.

RIS

TY - JOUR

T1 - Informing climate models with rapid chamber measurements of forest carbon uptake

AU - Metcalfe, Daniel B.

AU - Ricciuto, Daniel

AU - Palmroth, Sari

AU - Campbell, Catherine

AU - Hurry, Vaughan

AU - Mao, Jiafu

AU - Keel, Sonja G.

AU - Linder, Sune

AU - Shi, Xiaoying

AU - Näsholm, Torgny

AU - Ohlsson, Klas E.A.

AU - Blackburn, M.

AU - Thornton, Peter E.

AU - Oren, Ram

PY - 2017/5/1

Y1 - 2017/5/1

N2 - Models predicting ecosystem carbon dioxide (CO2) exchange under future climate change rely on relatively few real-world tests of their assumptions and outputs. Here, we demonstrate a rapid and cost-effective method to estimate CO2 exchange from intact vegetation patches under varying atmospheric CO2 concentrations. We find that net ecosystem CO2 uptake (NEE) in a boreal forest rose linearly by 4.7 ± 0.2% of the current ambient rate for every 10 ppm CO2 increase, with no detectable influence of foliar biomass, season, or nitrogen (N) fertilization. The lack of any clear short-term NEE response to fertilization in such an N-limited system is inconsistent with the instantaneous downregulation of photosynthesis formalized in many global models. Incorporating an alternative mechanism with considerable empirical support – diversion of excess carbon to storage compounds – into an existing earth system model brings the model output into closer agreement with our field measurements. A global simulation incorporating this modified model reduces a long-standing mismatch between the modeled and observed seasonal amplitude of atmospheric CO2. Wider application of this chamber approach would provide critical data needed to further improve modeled projections of biosphere–atmosphere CO2 exchange in a changing climate.

AB - Models predicting ecosystem carbon dioxide (CO2) exchange under future climate change rely on relatively few real-world tests of their assumptions and outputs. Here, we demonstrate a rapid and cost-effective method to estimate CO2 exchange from intact vegetation patches under varying atmospheric CO2 concentrations. We find that net ecosystem CO2 uptake (NEE) in a boreal forest rose linearly by 4.7 ± 0.2% of the current ambient rate for every 10 ppm CO2 increase, with no detectable influence of foliar biomass, season, or nitrogen (N) fertilization. The lack of any clear short-term NEE response to fertilization in such an N-limited system is inconsistent with the instantaneous downregulation of photosynthesis formalized in many global models. Incorporating an alternative mechanism with considerable empirical support – diversion of excess carbon to storage compounds – into an existing earth system model brings the model output into closer agreement with our field measurements. A global simulation incorporating this modified model reduces a long-standing mismatch between the modeled and observed seasonal amplitude of atmospheric CO2. Wider application of this chamber approach would provide critical data needed to further improve modeled projections of biosphere–atmosphere CO2 exchange in a changing climate.

KW - boreal forest

KW - earth system model

KW - model-data integration

KW - nutrient limitation

KW - photosynthetic downregulation

KW - Pinus sylvestris

UR - http://www.scopus.com/inward/record.url?scp=84983568243&partnerID=8YFLogxK

U2 - 10.1111/gcb.13451

DO - 10.1111/gcb.13451

M3 - Article

VL - 23

SP - 2130

EP - 2139

JO - Global Change Biology

JF - Global Change Biology

SN - 1354-1013

IS - 5

ER -