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| Ferron, Bruno; Marotzke, Jochem. |
| World Ocean Circulation Experiment (WOCE) hydrographic sections and a sea-surface climatology are combined with a ocean general circulation model through a 4D-variational method to analyze the meridional overturning of the Indian Ocean. The regional model is run with realistic surface forcings over year 1995 for which most of WOCE Indian Ocean sections were made. The assimilation controls the initial temperature and salinity fields, surface forcings and open-boundary velocities, temperature and salinity. When no observations are assimilated, the model shows that the deep (below 1000 m) meridional overturning is weak compared to observation-based estimates. This is a common feature of general circulation models. In contrast, after the assimilation, the... |
| Tipo: Text |
Palavras-chave: Overturn; Oceanographic surveys; Hydrographic data; Ocean circulation. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/2003/publication-582.pdf |
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| Molinari, R.L.; Beal, L.M.; Chereskin, T.K.; Robbins, P.E.. |
| Two sets of direct velocity measurements were taken, concurrent with hydrographic data, in the bottom waters of the northern Somali Basin in June and September, 1995. The velocities indicate a temporal flow reversal in the bottom circulation, which is consistent with the changing density structure between the sections. In June, there is evidence of a southward Deep Western Boundary Current with a transport of 5 Sv. By September, flow close to the boundary is northward, with a transport of 2.6 Sv. Furthermore, the deep density gradient across the interior of the Somali Basin also changes between occupations, implying a cyclonic circulation in June and anticyclonic flow in September. Rossby wave activity is high in this region during the southwest monsoon,... |
| Tipo: Journal Contribution |
Palavras-chave: Hydrographic data. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/555 |
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| Abdel-Halim, A.M.; Aboel-Khair, E.M.; Fahmy, M.A.; Shridah, M.A.. |
| Environmental Information and Monitoring Programme (EIMP) for the Egyptian coastal waters of Aqaba Gulf was established to initial monitoring and data base system by applying quality control assessments in order to evaluate, protect and sustainable use of coastal regions. Within the framework of this programme six bimonthly field campaigns were carried out annually during 1998 – 2004. A total of 11 coastal stations were selected to cover different locations of the Gulf. The surface distribution patterns of hydrographical parameters (water temperature, salinity, dissolved oxygen and pH) as well as chlorophyll-a, total suspended matter, transparency, nitrogen and phosphorus forms and reactive silicate were investigated. The obtained data of seven years work... |
| Tipo: Journal Contribution |
Palavras-chave: Environmental Field Study; Coastal waters; Hydrographic data; Environmental assessment; Coastal waters. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/1911 |
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