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| Pinker, R. T.; Bentamy, Abderrahim; Katsaros, Kristina; Ma, Y.; Li, C.. |
| Many studies have been undertaken to evaluate turbulent heat fluxes at the ocean-atmosphere interface; less was done on the total net heat flux. We will compare heat budgets at the ocean-atmosphere interface as derived from satellites and from blended products, compare them to in situ observations, identify the location of largest differences, and attempt to explain reasons for these differences. The results over the Atlantic Sector (50 degrees S-50 degrees N) for a 3 year period show that differences in the turbulent fluxes among two widely used approaches are overshadowed by differences in the radiative fluxes. While the maximum difference in sensible and latent heat fluxes can be about 30 W/m(2), the mean values for latent heat fluxes are -2.27 W/m(2)... |
| Tipo: Text |
Palavras-chave: Oceanic heat fluxes; Oceanic net heat fluxes; Ocean-atmosphere interface. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00186/29713/28119.pdf |
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| Telford, R. J.; Li, C.; Kucera, M.. |
| We demonstrate that the temperature signal in the planktonic foraminifera assemblage data from the North Atlantic typically does not originate from near-surface waters and argue that this has the potential to bias sea surface temperature reconstructions using transfer functions calibrated against near-surface temperatures if the thermal structure of the upper few hundred metres of ocean changes over time. CMIP5 climate models indicate that ocean thermal structure in the North Atlantic changed between the Last Glacial Maximum (LGM) and the pre-industrial (PI), with some regions, mainly in the tropics, of the LGM ocean lacking good thermal analogues in the PI. Transfer functions calibrated against different depths reconstruct a marked subsurface cooling in... |
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| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00181/29202/27585.pdf |
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| Jiao, N.; Robinson, C.; Azam, F.; Thomas, H.; Baltar, F.; Dang, H.; Hardman-mountford, N. J.; Johnson, M.; Kirchman, D. L.; Koch, B. P.; Legendre, L.; Li, C.; Liu, J.; Luo, T.; Luo, Y. -w.; Mitra, A.; Romanou, A.; Tang, K.; Wang, X.; Zhang, C.; Zhang, R.. |
| This paper reviews progress on understanding biological carbon sequestration in the ocean with special reference to the microbial formation and transformation of recalcitrant dissolved organic carbon (RDOC), the microbial carbon pump (MCP). We propose that RDOC is a concept with a wide continuum of recalcitrance. Most RDOC compounds maintain their levels of recalcitrance only in a specific environmental context (RDOCt). The ocean RDOC pool also contains compounds that may be inaccessible to microbes due to their extremely low concentration (RDOCc). This differentiation allows us to appreciate the linkage between microbial source and RDOC composition on a range of temporal and spatial scales. Analyses of biomarkers and isotopic records show intensive MCP... |
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| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00239/35040/33575.pdf |
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| Bayne, B. L.; Ahrens, M.; Allen, S. K.; D'Auriac, M. Angles; Backeljau, T.; Beninger, P.; Bohn, R.; Boudry, Pierre; Davis, J.; Green, T.; Guo, X.; Hedgecock, D.; Ibarra, A.; Kingsley-smit, P.; Krause, M.; Langdon, C.; Lapegue, Sylvie; Li, C.; Manahan, D.; Mann, R.; Perez-paralle, L.; Powell, E. N.; Rawson, P. D.; Speiser, D.; Sanchez, J. -l.; Shumway, S.; Wang, H.. |
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| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00418/52944/53886.pdf |
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