RedGage

Description

Download scientific diagram | The observational record of permafrost OC fluxes to sediment cores of the ESAS compared with (A) the Greenland ice core  18 O record (39), (B) the atmospheric CO 2 concentration (7), and (C) Northern Hemisphere temperature rise (6). The other panels show transport time corrected permafrost OC fluxes from ICDs to the 31-PC (D) and (uncorrected) peaks of ICD fluxes to the ESAS cores (E) 4-PC (13), PC-23 (11), and GC-58 (17). Furthermore, permafrost OC release by AL is shown for (F) the 31-PC and the other cores from the ESAS (G). The abbreviated time intervals are the DO-3, the LGM, the HS-1, the BA warm interstadial, the cold YD stadial, and the warm Holocene/Interglacial (including the EH PB). *The shown fluxes of the 31-PC include a correction for cross-shelf transport times due to increasing offshore distance with global sea-level rise during the EH (text S2). The ICD and AL fluxes indicate the minimum estimate, while pale peak shadows show the possible maximum estimate. from publication: Remobilization of dormant carbon from Siberian-Arctic permafrost during three past warming events | Carbon cycle models suggest that past warming events in the Arctic may have caused large-scale permafrost thaw and carbon remobilization, thus affecting atmospheric CO 2 levels. However, observational records are sparse, preventing spatially extensive and time-continuous... | Permafrost, Carbon and Arctic | ResearchGate, the professional network for scientists.