TY  - JOUR
A1  - Schneider von Deimling, Thomas
A1  - Meinshausen, Malte
A1  - Levermann, Anders
A1  - Huber, Veronika
A1  - Frieler, Katja
A1  - Lawrence, D. M.
A1  - Brovkin, Victor
T1  - Estimating the near-surface permafrost-carbon feedback on global warming
JF  - Biogeosciences
N2  - Thawing of permafrost and the associated release of carbon constitutes a positive feedback in the climate system, elevating the effect of anthropogenic GHG emissions on global-mean temperatures. Multiple factors have hindered the quantification of this feedback, which was not included in climate carbon-cycle models which participated in recent model intercomparisons (such as the Coupled Carbon Cycle Climate Model Intercomparison Project - (CMIP)-M-4). There are considerable uncertainties in the rate and extent of permafrost thaw, the hydrological and vegetation response to permafrost thaw, the decomposition timescales of freshly thawed organic material, the proportion of soil carbon that might be emitted as carbon dioxide via aerobic decomposition or as methane via anaerobic decomposition, and in the magnitude of the high latitude amplification of global warming that will drive permafrost degradation. Additionally, there are extensive and poorly characterized regional heterogeneities in soil properties, carbon content, and hydrology. Here, we couple a new permafrost module to a reduced complexity carbon-cycle climate model, which allows us to perform a large ensemble of simulations. The ensemble is designed to span the uncertainties listed above and thereby the results provide an estimate of the potential strength of the feedback from newly thawed permafrost carbon. For the high CO2 concentration scenario (RCP8.5), 33-114 GtC (giga tons of Carbon) are released by 2100 (68% uncertainty range). This leads to an additional warming of 0.04-0.23 degrees C. Though projected 21st century permafrost carbon emissions are relatively modest, ongoing permafrost thaw and slow but steady soil carbon decomposition means that, by 2300, about half of the potentially vulnerable permafrost carbon stock in the upper 3 m of soil layer (600-1000 GtC) could be released as CO2, with an extra 1-4% being released as methane. Our results also suggest that mitigation action in line with the lower scenario RCP3-PD could contain Arctic temperature increase sufficiently that thawing of the permafrost area is limited to 9-23% and the permafrost-carbon induced temperature increase does not exceed 0.04-0.16 degrees C by 2300.
Y1  - 2012
U6  - https://doi.org/10.5194/bg-9-649-2012
SN  - 1726-4170
SN  - 1726-4189
VL  - 9
IS  - 2
SP  - 649
EP  - 665
PB  - Copernicus
CY  - Göttingen
ER  - 
TY  - JOUR
A1  - Abramowicz, Isidoro
A1  - Arnold, Rafael
A1  - Drori, Itamar
A1  - Haußig, Hans-Michael
A1  - Huber, Jasmina
A1  - Katz, Daniel S.
A1  - Keßler, Katrin
A1  - Kleinecke, Ulrike
A1  - Knufinke, Ulrich
A1  - Przystawik, Mirko
A1  - Nemtsov, Jascha
A1  - Rebiger, Bill
A1  - Ries, Rotraud
A1  - Salzer, Dorothea M.
A1  - Schirrmeister, Sebastian
A1  - Stellmacher, Martha
ED  - Denz, Rebekka
ED  - Salzer, Dorothea M.
T1  - PaRDeS : Zeitschrift der Vereinigung für Jüdische Studien e.V. = 'Ein Gebet ohne Gesang ist wie ein Körper ohne Seele.' : Aspekte der synagogalen Musik
N2  - Die Zeitschrift möchte die fruchtbare und facettenreiche Kultur des Judentums sowie seine Berührungspunkte zur Umwelt in den unterschiedlichen Bereichen dokumentieren. Daneben dient die Zeitschrift als Forum zur Positionierung der Fächer Jüdische Studien und Judaistik innerhalb des wissenschaftlichen Diskurses sowie zur Diskussion ihrer historischen und gesellschaftlichen Verantwortung.
N2  - The journal aims at documenting the fruitful and multifarious culture of Judaism as well as its relations to its environment within diverse areas of research. In addition, the journal is meant to promote Jewish Studies within academic discourse and discuss its historic and social responsibility.
T3  - PaRDeS : Zeitschrift der Vereinigung für Jüdische Studien e.V. - 20 
Y1  - 2014
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-70306
SN  - 978-3-86956-290-2
SN  - 1614-6492
SN  - 1862-7684
IS  - 20
PB  - Universitätsverlag Potsdam
CY  - Potsdam
ER  -