Zobrazeno 1 - 10
of 385
pro vyhledávání: '"Peter Köhler"'
Autor:
Junjie Wu, Gesine Mollenhauer, Ruediger Stein, Peter Köhler, Jens Hefter, Kirsten Fahl, Hendrik Grotheer, Bingbing Wei, Seung-Il Nam
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-11 (2022)
Shrinking of the Laurentide Ice Sheet mobilized the underlying rock organic carbon. Together with permafrost carbon release, this may contribute 12 ppm to deglacial CO2 rise, underscoring the impact of cryospheric change on the carbon cycle.
Externí odkaz:
https://doaj.org/article/0005f7e788b54f9d841677317c2cd495
Autor:
Peter Köhler, Roderik S. W. van de Wal
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-10 (2020)
This study presents a new definition of interglacials during the Quaternary. The authors find the appearance of interglacials is in general following the 41-kyr cycle of obliquity with various exceptions, suggesting a more complex physical mechanism
Externí odkaz:
https://doaj.org/article/b51d2e20170d495b8872b757ae109c52
Autor:
Peter Köhler
Publikováno v:
Frontiers in Climate, Vol 2 (2020)
The CO2 removal model inter-comparison (CDRMIP) has been established to approximate the usefulness of climate mitigation by some well-defined negative emission technologies. I here analyze ocean alkalinization in a high CO2 world (emission scenario S
Externí odkaz:
https://doaj.org/article/a4c11b886fa940a3b55f0fa243b2a73b
Autor:
Maria Winterfeld, Gesine Mollenhauer, Wolf Dummann, Peter Köhler, Lester Lembke-Jene, Vera D. Meyer, Jens Hefter, Cameron McIntyre, Lukas Wacker, Ulla Kokfelt, Ralf Tiedemann
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-12 (2018)
Permafrost-derived carbon (C) may have been an additional source of greenhouse gases during the last glacial-interglacial transition. Here the authors show that ancient C from degrading permafrost was mobilised during phases of rapid sea-level rise,
Externí odkaz:
https://doaj.org/article/4eae999ba2544975817c93ca8352f082
Autor:
Lorenzo Nicoletti, Andrea Romano, Adrian König, Peter Köhler, Maximilian Heinrich, Markus Lienkamp
Publikováno v:
Energies, Vol 14, Iss 15, p 4655 (2021)
Although battery electric vehicles (BEVs) are locally emission-free and assist automakers in reducing their carbon footprint, two major disadvantages are their shorter range and higher production costs compared to combustion engines. These drawbacks
Externí odkaz:
https://doaj.org/article/6c2363a3dccb49b38376312b2bb807ed
Autor:
Jörg Hasenclever, Gregor Knorr, Lars H. Rüpke, Peter Köhler, Jason Morgan, Kristin Garofalo, Stephen Barker, Gerrit Lohmann, Ian R. Hall
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-11 (2017)
Ice core data show a breakdown in the long-term temperature-atmospheric CO2 correlation during interglacial-glacial transitions. Here, via a novel modelling approach, the authors reveal marine volcanism, triggered by a fall in sea level, as a likely
Externí odkaz:
https://doaj.org/article/bf7003cebdce408087e07283c7e43be9
Autor:
Vera D Meyer, Jens Hefter, Peter Köhler, Ralf Tiedemann, Rainer Gersonde, Lukas Wacker, Gesine Mollenhauer
Publikováno v:
Environmental Research Letters, Vol 14, Iss 8, p 085003 (2019)
During the last deglaciation (18–8 kyr BP), shelf flooding and warming presumably led to a large-scale decomposition of permafrost soils in the mid-to-high latitudes of the Northern Hemisphere. Microbial degradation of old organic matter released f
Externí odkaz:
https://doaj.org/article/58ef704f0aba4a87966db96e5aca2cc0
Autor:
Peter Köhler
Publikováno v:
Environmental Research Letters, Vol 11, Iss 12, p 124016 (2016)
The depletion of ^14 C due to the emission of radiocarbon-free fossil fuels ( ^14 C Suess effect) might lead to similar values in future and past radiocarbon signatures potentially introducing ambiguity in dating. I here test if a similar impact on t
Externí odkaz:
https://doaj.org/article/5ae60c58945c4c159c47d92a45701fda
Publikováno v:
Environmental Research Letters, Vol 11, Iss 2, p 024007 (2016)
Carbon dioxide removal (CDR) approaches are efforts to reduce the atmospheric CO _2 concentration. Here we use a marine carbon cycle model to investigate the effects of one CDR technique: the open ocean dissolution of the iron-containing mineral oliv
Externí odkaz:
https://doaj.org/article/6e9e5e67d2074f91acae007961d0155f
Publikováno v:
Environmental Research Letters, Vol 8, Iss 1, p 014009 (2013)
Ongoing global warming induced by anthropogenic emissions has opened the debate as to whether geoengineering is a ‘quick fix’ option. Here we analyse the intended and unintended effects of one specific geoengineering approach, which is enhanced w
Externí odkaz:
https://doaj.org/article/2fbe50f52cc243368bf32023e278f95c