Reference : Benchmarking carbon fluxes of the ISIMIP2a biome models
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
http://hdl.handle.net/2268/210645
Benchmarking carbon fluxes of the ISIMIP2a biome models
English
Chang, Jinfeng [> >]
Ciais, Philippe [> >]
Wang, Xuhui [> >]
Piao, Shilong [> >]
Asrar, Ghassem [> >]
Betts, Richard [> >]
Chevallier, Frédéric [> >]
Dury, Marie mailto [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Modélisation du climat et des cycles biogéochimiques >]
François, Louis mailto [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Modélisation du climat et des cycles biogéochimiques >]
Frieler, Katja [> >]
Garcia Cantu Ros, Anselmo [> >]
Henrot, Alexandra-Jane mailto [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Modélisation du climat et des cycles biogéochimiques >]
Hickler, Thomas [> >]
Ito, Akihiko [> >]
Morfopoulos, Catherine [> >]
Munhoven, Guy mailto [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP) >]
Nishina, Kazuya [> >]
Ostberg, Sebastian [> >]
Pan, Shufen [> >]
Peng, Shushi [> >]
Rafique, Rashid [> >]
Reyer, Christopher [> >]
Rödenbeck, Christrian [> >]
Schaphoff, Sibyll [> >]
Steinkamp, Jörg [> >]
Tian, Hanqin [> >]
Viovy, Nicolas [> >]
Yang, Jia [> >]
Zeng, Ning [> >]
Zhao, Fang [> >]
2017
Environmental Research Letters
Institute of Physics Publishing
12
045002
Yes (verified by ORBi)
International
1748-9326
Bristol
United Kingdom
[en] ISIMIP2a ; Biome ; Net Biome Productivity ; Net Primary Productivity
[en] The purpose of this study is to evaluate the eight ISIMIP2a biome models against independent estimates of long-term net carbon fluxes (i.e. Net Biome Productivity, NBP) over terrestrial ecosystems for the recent four decades (1971–2010). We evaluate modeled global NBP against 1) the updated global residual land sink (RLS) plus land use emissions (E LUC) from the Global Carbon Project (GCP), presented as R + L in this study by Le Quéré et al (2015), and 2) the land CO2 fluxes from two atmospheric inversion systems: Jena CarboScope s81_v3.8 and CAMS v15r2, referred to as F Jena and F CAMS respectively. The model ensemble-mean NBP (that includes seven models with land-use change) is higher than but within the uncertainty of R + L, while the simulated positive NBP trend over the last 30 yr is lower than that from R + L and from the two inversion systems. ISIMIP2a biome models well capture the interannual variation of global net terrestrial ecosystem carbon fluxes. Tropical NBP represents 31 ± 17% of global total NBP during the past decades, and the year-to-year variation of tropical NBP contributes most of the interannual variation of global NBP. According to the models, increasing Net Primary Productivity (NPP) was the main cause for the generally increasing NBP. Significant global NBP anomalies from the long-term mean between the two phases of El Niño Southern Oscillation (ENSO) events are simulated by all models (p < 0.05), which is consistent with the R + L estimate (p = 0.06), also mainly attributed to NPP anomalies, rather than to changes in heterotrophic respiration (Rh). The global NPP and NBP anomalies during ENSO events are dominated by their anomalies in tropical regions impacted by tropical climate variability. Multiple regressions between R + L, F Jena and F CAMS interannual variations and tropical climate variations reveal a significant negative response of global net terrestrial ecosystem carbon fluxes to tropical mean annual temperature variation, and a non-significant response to tropical annual precipitation variation. According to the models, tropical precipitation is a more important driver, suggesting that some models do not capture the roles of precipitation and temperature changes adequately.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/210645
10.1088/1748-9326/aa63fa

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