Zobrazeno 1 - 10
of 549
pro vyhledávání: '"M. Leuenberger"'
Autor:
M. Bouchet, A. Landais, A. Grisart, F. Parrenin, F. Prié, R. Jacob, E. Fourré, E. Capron, D. Raynaud, V. Y. Lipenkov, M.-F. Loutre, T. Extier, A. Svensson, E. Legrain, P. Martinerie, M. Leuenberger, W. Jiang, F. Ritterbusch, Z.-T. Lu, G.-M. Yang
Publikováno v:
Climate of the Past, Vol 19, Pp 2257-2286 (2023)
The EPICA (European Project for Ice Coring in Antarctica) Dome C (EDC) ice core drilling in East Antarctica reaches a depth of 3260 m. The reference EDC chronology, the AICC2012 (Antarctic Ice Core Chronology 2012), provides an age vs. depth relation
Externí odkaz:
https://doaj.org/article/81e3b5d2917e4d5698f111cc0981da64
Autor:
J. Maccali, A. N. Meckler, S.-E. Lauritzen, T. Brekken, H. A. Rokkan, A. Fernandez, Y. Krüger, J. Adigun, S. Affolter, M. Leuenberger
Publikováno v:
Climate of the Past, Vol 19, Pp 1847-1862 (2023)
The southern coast of South Africa displays a highly dynamical climate as it is at the convergence of the Atlantic and Indian oceans, and it is located near the subtropical/temperate zone boundary with seasonal influence of easterlies and westerlies.
Externí odkaz:
https://doaj.org/article/fc74fb277aa0469a8e555da191f8ecfb
Autor:
P. Bergamaschi, A. Segers, D. Brunner, J.-M. Haussaire, S. Henne, M. Ramonet, T. Arnold, T. Biermann, H. Chen, S. Conil, M. Delmotte, G. Forster, A. Frumau, D. Kubistin, X. Lan, M. Leuenberger, M. Lindauer, M. Lopez, G. Manca, J. Müller-Williams, S. O'Doherty, B. Scheeren, M. Steinbacher, P. Trisolino, G. Vítková, C. Yver Kwok
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 13243-13268 (2022)
We present a novel high-resolution inverse modelling system (“FLEXVAR”) based on FLEXPART-COSMO back trajectories driven by COSMO meteorological fields at 7 km×7 km resolution over the European COSMO-7 domain and the four-dimensional variational
Externí odkaz:
https://doaj.org/article/6b9546156a41423590d46cf5ba18fc4e
Publikováno v:
Biogeosciences, Vol 17, Pp 4871-4882 (2020)
Stable isotopes in tree-ring cellulose are important tools for climatic reconstructions even though their interpretation could be challenging due to nonclimate signals, primarily those related to tree aging. Previous studies on the presence of tree-a
Externí odkaz:
https://doaj.org/article/3247b0d5cc6e4c14b0d96c70b0315c94
Publikováno v:
Atmospheric Measurement Techniques, Vol 13, Pp 101-117 (2020)
Atmospheric trace gas measurements of greenhouse gases are critical in their precision and accuracy. In the past 5 years, atmospheric measurement and gas metrology communities have turned their attention to possible surface effects due to pressure an
Externí odkaz:
https://doaj.org/article/038ce74724cb49f8bd92871cb498fad5
Publikováno v:
Atmospheric Measurement Techniques, Vol 13, Pp 119-130 (2020)
A critical issue for the long-term monitoring of atmospheric trace gases is precision and accuracy of the measurement systems employed. Both measuring and preparing reference gas mixtures for trace gases are challenging due to, for example, adsorptio
Externí odkaz:
https://doaj.org/article/417246596d9e4759bb8ca3ef91147781
Publikováno v:
Atmospheric Measurement Techniques, Vol 12, Pp 6803-6826 (2019)
Carbon dioxide and oxygen are tightly coupled in land biosphere CO2–O2 exchange processes, whereas they are not coupled in oceanic exchange. For this reason, atmospheric oxygen measurements can be used to constrain the global carbon cycle, especial
Externí odkaz:
https://doaj.org/article/e07f75f9c04742978df20046b5fcb9de
Publikováno v:
Biogeosciences, Vol 15, Pp 1047-1064 (2018)
Cellulose content (CC (%)) in tree rings is usually utilised as a tool to control the quality of the α-cellulose extraction from tree rings in the preparation of stable-isotope analysis in wooden tissues. Reported amounts of CC (%) are often limit
Externí odkaz:
https://doaj.org/article/b91f3a78485840afa0d1d601d700e33e
Autor:
T. A. Berhanu, S. Szidat, D. Brunner, E. Satar, R. Schanda, P. Nyfeler, M. Battaglia, M. Steinbacher, S. Hammer, M. Leuenberger
Publikováno v:
Atmospheric Chemistry and Physics, Vol 17, Pp 10753-10766 (2017)
Fossil fuel CO2 (CO2ff) is the major contributor of anthropogenic CO2 in the atmosphere, and accurate quantification is essential to better understand the carbon cycle. Since October 2012, we have been continuously measuring the mixing ratios of C
Externí odkaz:
https://doaj.org/article/fad842a3eff545cc9db717b7d5e72caf
Autor:
K. M. Keller, S. Lienert, A. Bozbiyik, T. F. Stocker, O. V. Churakova (Sidorova), D. C. Frank, S. Klesse, C. D. Koven, M. Leuenberger, W. J. Riley, M. Saurer, R. Siegwolf, R. B. Weigt, F. Joos
Publikováno v:
Biogeosciences, Vol 14, Iss 10, Pp 2641-2673 (2017)
Measurements of the stable carbon isotope ratio (δ13C) on annual tree rings offer new opportunities to evaluate mechanisms of variations in photosynthesis and stomatal conductance under changing CO2 and climate conditions, especially in conjunction
Externí odkaz:
https://doaj.org/article/6c8fd2e1616f49469252d9262f2064a3