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| Boersma, K. Folkert; Vinken, Geert C. M.; Tournadre, Jean. |
| We address the lack of temporal information on ship emissions, and report on rapid short-term variations of satellite-derived ship NOx emissions between 2005 and 2012 over European seas. Our inversion is based on OMI observed tropospheric NO2 columns and GEOS-Chem simulations. Average European ship NOx emissions increased by similar to 15% from 2005 to 2008. This increase was followed by a reduction of similar to 12% in 2009, a direct result of the global economic downturn in 2008-2009, and steady emissions from 2009 to 2012. Observations of ship passages through the Suez Canal and satellite altimeter derived ship densities suggests that ships in the Mediterranean Sea have reduced their speed by more than 30% since 2008. This reduction in ship speed is... |
| Tipo: Text |
Palavras-chave: Ship emissions; Air pollution; NOx emissions; Satellite altimetry; OMI; Europe. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00307/41790/40994.pdf |
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| Husson, Berengere; Sarradin, Pierre-marie; Zeppilli, Daniela; Sarrazin, Jozee. |
| In community ecology, niche analysis is a classic tool for investigating species’ distribution and dynamics. Components of a species’ niche include biotic and abiotic factors. In the hydrothermal vent ecosystem, although composition and temporal variation have been investigated since these deep-sea habitats were discovered nearly 40 years ago, the roles and the factors behind the success of the dominant species of these ecosystems have yet to be fully elucidated. In the Lucky Strike vent field on the Mid Atlantic Ridge (MAR), the dominant species is the mussel Bathymodiolus azoricus. Data on this species and its associated community were collected during four oceanographic cruises on the Eiffel Tower edifice and integrated in a novel statistical framework... |
| Tipo: Text |
Palavras-chave: Bathymodiolus azoricus; OMI; Habitat; Niche; Mid-Atlantic ridge; Lucky strike. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00341/45254/44692.pdf |
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