Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Samuel L. Jaccard"'
Autor:
Sofia Muller, François Fripiat, Samuel L. Jaccard, Leandro Ponsoni, Jens A. Hölemann, Alfredo Martínez-García, Bruno Delille
Publikováno v:
Frontiers in Marine Science, Vol 11 (2024)
Previous studies have reported an accumulation of nitrous oxide (N2O) on shallow continental shelves of the western Arctic Ocean. In this study, we sampled seawater profiles for N2O measurements in the eastern Arctic shelves, in the North Kara Sea, i
Externí odkaz:
https://doaj.org/article/76b70b9c96bb4264a82d66b7493a424e
Autor:
Xuyuan E. Ai, Lena M. Thöle, Alexandra Auderset, Mareike Schmitt, Simone Moretti, Anja S. Studer, Elisabeth Michel, Martin Wegmann, Alain Mazaud, Peter K. Bijl, Daniel M. Sigman, Alfredo Martínez-García, Samuel L. Jaccard
Publikováno v:
Communications Earth & Environment, Vol 5, Iss 1, Pp 1-12 (2024)
Abstract Previous studies suggest that meridional migrations of the Antarctic Circumpolar Current may have altered wind-driven upwelling and carbon dioxide degassing in the Southern Ocean during past climate transitions. Here, we report a quantitativ
Externí odkaz:
https://doaj.org/article/49301435a23546558db055422a37108f
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-9 (2023)
Abstract Changes in ocean ventilation have been pivotal in regulating carbon sequestration and release on centennial to millennial timescales. However, paleoceanographic reconstructions documenting changes in deep-ocean ventilation using 14C dating,
Externí odkaz:
https://doaj.org/article/b956086da4274fabaa0604a0fd873694
Autor:
Yi Zhong, Yanguang Liu, Hu Yang, Qiuzhen Yin, David J. Wilson, Zhengyao Lu, Samuel L. Jaccard, Torben Struve, Peter D. Clift, Stefanie Kaboth‐Bahr, Juan C. Larrasoaña, André Bahr, Xun Gong, Debo Zhao, Yanan Zhang, Wenyue Xia, Qingsong Liu
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 4, Pp n/a-n/a (2024)
Abstract Airborne mineral dust is sensitive to climatic changes, but its response to orbital forcing is still not fully understood. Here, we present a reconstruction of dust input to the Subarctic Pacific Ocean covering the past 190 kyr. The dust com
Externí odkaz:
https://doaj.org/article/5e33f454fac741dda0195b935bc55c13
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-11 (2022)
Analysis of the largest available database of Holocene temperature time series covering past 12,000 years reveals complex spatio-temporal trends and challenges the paradigm of a globally synchronous Holocene Thermal Maximum.
Externí odkaz:
https://doaj.org/article/80b2231aa5e244eeb76338baacf2742f
Autor:
Thomas A. Ronge, Jörg Lippold, Walter Geibert, Samuel L. Jaccard, Sebastian Mieruch-Schnülle, Finn Süfke, Ralf Tiedemann
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
Abstract The millennial-scale variability of the Atlantic Meridional Overturning Circulation (AMOC) is well documented for the last glacial termination and beyond. Despite its importance for the climate system, the evolution of the South Pacific over
Externí odkaz:
https://doaj.org/article/bd2292137833479a8704cb52ab7837bb
Autor:
Julia Gottschalk, Elisabeth Michel, Lena M. Thöle, Anja S. Studer, Adam P. Hasenfratz, Nicole Schmid, Martin Butzin, Alain Mazaud, Alfredo Martínez-García, Sönke Szidat, Samuel L. Jaccard
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-14 (2020)
A Southern Ocean influences on the carbon cycle is considered a key component of deglacial changes. Here, the authors show spatial differences in glacial Southern Ocean carbon storage that dissipated rapidly 14.6 kyr ago, revealing a South Indian Oce
Externí odkaz:
https://doaj.org/article/3e96362855ad4cbab64fcf7a8b73941c
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-1 (2022)
Externí odkaz:
https://doaj.org/article/dbc309843a334178a4cfe89111afa2a6
Autor:
Stéphanie Duchamp-Alphonse, Giuseppe Siani, Elisabeth Michel, Luc Beaufort, Yves Gally, Samuel L. Jaccard
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-10 (2018)
The contribution of the carbonate counter pump (CCP) to the last deglacial atmospheric CO2 rise has yet been largely ignored. Here, the authors show that an increased CCP in the Subantarctic Pacific along with high surface ocean fertility and [CO2aq]
Externí odkaz:
https://doaj.org/article/02e04af3444848dc9924eada6dcf5b3b
Autor:
Julia Gottschalk, Luke C. Skinner, Jörg Lippold, Hendrik Vogel, Norbert Frank, Samuel L. Jaccard, Claire Waelbroeck
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-11 (2016)
Direct proxy evidence for the many explanations for past millennial-scale atmospheric CO2 changes remains scarce. Here, the authors show that changes in the efficiency of respired carbon storage in the deep Southern Ocean were linked to variations in
Externí odkaz:
https://doaj.org/article/adbb270b69ff48f2ba20b119e47fa43f