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Verlagsausgabe
DOI: 10.5445/IR/1000088159
Veröffentlicht am 30.11.2018

A Large Committed Long-Term Sink of Carbon due to Vegetation Dynamics

Pugh, Thomas; Jones, C. D.; Huntingford, C.; Burton, C.; Arneth, Almut; Brovkin, V.; Ciais, P.; Lomas, M.; Robertson, E.; Piao, S. L.; Sitch, S.

Abstract:
The terrestrial biosphere shows substantial inertia in its response to environmental change. Hence, assessments of transient changes in ecosystem properties to 2100 do not capture the full magnitude of the response realized once ecosystems reach an effective equilibrium with the changed environmental boundary conditions. This equilibrium state can be termed the committed state, in contrast to a transient state in which the ecosystem is in disequilibrium. The difference in ecosystem properties between the transient and committed states represents the committed change yet to be realized. Here an ensemble of dynamic global vegetation model simulations was used to assess the changes in tree cover and carbon storage for a variety of committed states, relative to a preindustrial baseline, and to attribute the drivers of uncertainty. Using a subset of simulations, the committed changes in these variables post‐2100, assuming climate stabilization, were calculated. The results show large committed changes in tree cover and carbon storage, with model disparities driven by residence time in the tropics, and residence time and productivity in t ... mehr


Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 2328-4277
URN: urn:nbn:de:swb:90-881595
KITopen-ID: 1000088159
Erschienen in Earth's future
Band 6
Heft 10
Seiten 1413–1432
Vorab online veröffentlicht am 04.10.2018
Nachgewiesen in Web of Science
Scopus
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