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- De Boer, Agatha M., et al.
(author)
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Control of the glacial carbon budget by topographically induced mixing
- 2014
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In: Geophysical Research Letters. - 0094-8276 .- 1944-8007. ; 41:12, s. 4277-4284
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Journal article (peer-reviewed)abstract
- Evidence for the oceanic uptake of atmospheric CO2 during glaciations suggests that there was less production of southern origin deep water but, paradoxically, a larger volume of southern origin water than today. Here we demonstrate, using a theoretical box model, that the inverse relationship between volume and production rate of this water mass can be explained by invoking mixing rates in the deep ocean that are proportional to topographic outcropping area scaled with ocean floor slope. Furthermore, we show that the resulting profile, of a near-linear decrease in mixing intensity away from the bottom, generates a positive feedback on CO2 uptake that can initiate a glacial cycle. The results point to the importance of using topography-dependent mixing when studying the large-scale ocean circulation, especially in the paleo-intercomparison models that have failed to produce the weaker and more voluminous bottom water of the Last Glacial Maximum.
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- Jüling, André, et al.
(author)
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Multidecadal variability in the climate system : phenomena and mechanisms
- 2020
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In: The European Physical Journal Plus. - : Springer Science and Business Media LLC. - 2190-5444. ; 135:6
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Research review (peer-reviewed)abstract
- An open and fundamental issue in climate dynamics is the origin of multidecadal variability in the climate system. Resolving this issue is essential for adequate attribution of human-induced climate change. The purpose of this paper is to provide a perspective on multidecadal variability from the analysis of observations and results from model simulations. Data from the instrumental record indicate the existence of large-scale coherent patterns of multidecadal variability in sea surface temperature. Combined with long time series of proxy data, these results provide ample evidence for the existence of multidecadal sea surface temperature variations. Results of a hierarchy of climate models have provided several mechanisms of this variability, ranging from pure atmospheric forcing, via internal ocean processes to coupled ocean-atmosphere interactions. An important problem is that current state-of-the-art climate models underestimate multidecadal variability. We argue that these models miss important processes in their representation of ocean eddies and focus on a robust mechanism of multidecadal variability which is found in multi-century simulations with climate models having a strongly eddying ocean component.
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- Ladds, MJGW, et al.
(author)
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Publisher Correction: A DHODH inhibitor increases p53 synthesis and enhances tumor cell killing by p53 degradation blockage
- 2018
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In: Nature communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 9:1, s. 2071-
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Journal article (peer-reviewed)abstract
- The original PDF version of this Article listed the authors as “Marcus J.G.W. Ladds,” where it should have read “Marcus J. G. W. Ladds, Ingeborg M. M. van Leeuwen, Catherine J. Drummond et al.#”.Also in the PDF version, it was incorrectly stated that “Correspondence and requests for materials should be addressed to S. Lín.”, instead of the correct “Correspondence and requests for materials should be addressed to S. Laín.”This has been corrected in the PDF version of the Article. The HTML version was correct from the time of publication.
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- Orton, G, et al.
(author)
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Earth-based observations of the Galileo probe entry site
- 1996
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In: SCIENCE. - : AMER ASSOC ADVANCEMENT SCIENCE. - 0036-8075. ; 272:5263, s. 839-840
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Journal article (peer-reviewed)abstract
- Earth-based observations of Jupiter indicate that the Galileo probe probably entered Jupiter's atmosphere just inside a region that has less cloud cover and drier conditions than more than 99 percent of the rest of the planet. The visual appearance of the
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