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| Registros recuperados: 48 | |
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| Lagabrielle, Erwann; Crochelet, Estelle; Andrello, Marco; Schill, Steven R.; Arnaud-haond, Sophie; Alloncle, Neil; Ponge, Benjamin. |
| Connectivity is a crucial process underpinning the persistence, recovery, and productivity of marine ecosystems. The Convention on Biological Diversity, through the Aichi Target 11, has set the ambitious objective of implementing a ‘well connected system of protected areas’ by 2020. This paper identifies eight challenges toward the integration of connectivity into MPA network management and planning. A summary table lists the main recommendations in terms of method, tool, advice, or action to address each of these challenges. Authors belong to a science–management continuum including researchers, international NGO officers, and national MPA agency members. Three knowledge challenges are addressed: selecting and integrating connectivity measurement metrics;... |
| Tipo: Text |
Palavras-chave: Ocean; Coastal; Conservation evaluation; Marine protected areas; Spatial modelling; Fishing. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00226/33742/33891.pdf |
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| Zippel, Seth F.; Maksym, Ted; Scully, Malcolm; Sutherland, Peter; Dumont, Dany. |
| Observations of waves, winds, turbulence, and the geometry and circulation of windrows were made in a shallow bay in the winter of 2018 outside of Rimouski, Québec. Water velocities measured from a forward-looking pulse-coherent ADCP mounted on a small zodiac show spanwise (cross-windrow) convergence, streamwise (downwind) velocity enhancement, and downwelling in the windrows, consistent with the view that windrows are the result of counter-rotating pairs of wind-aligned vortices. The spacing of windrows, measured with acoustic backscatter and with surface imagery, was measured to be approximately twice the water depth, which suggests an aspect ratio of 1. The magnitude and vertical distribution of turbulence measured from the ADCP are consistent with a... |
| Tipo: Text |
Palavras-chave: Ocean; Atmosphere-ocean interaction; Boundary layer; Langmuir circulation; In situ oceanic observations; Surface observations. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00593/70552/68722.pdf |
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| Bourassa, Mark A.; Meissner, Thomas; Cerovecki, Ivana; Chang, Paul S.; Dong, Xiaolong; De Chiara, Giovanna; Donlon, Craig; Dukhovskoy, Dmitry S.; Elya, Jocelyn; Fore, Alexander; Fewings, Melanie R.; Foster, Ralph C.; Gille, Sarah T.; Haus, Brian K.; Hristova-veleva, Svetla; Holbach, Heather M.; Jelenak, Zorana; Knaff, John A.; Kranz, Sven A.; Manaster, Andrew; Mazloff, Matthew; Mears, Carl; Mouche, Alexis; Portabella, Marcos; Reul, Nicolas; Ricciardulli, Lucrezia; Rodriguez, Ernesto; Sampson, Charles; Solis, Daniel; Stoffelen, Ad; Stukel, Michael R.; Stiles, Bryan; Weissman, David; Wentz, Frank. |
| Strengths and weakness of remotely sensed winds are discussed, along with the current capabilities for remotely sensing winds and stress. Future missions are briefly mentioned. The observational needs for a wide range of wind and stress applications are provided. These needs strongly support a short list of desired capabilities of future missions and constellations. |
| Tipo: Text |
Palavras-chave: Satellite; Wind; Stress; Ocean; Requirements. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00511/62312/66565.pdf |
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| Aumont, Olivier; Belviso, Sauveur; Monfray, Patrick. |
| [1] A global model for surface dimethylsulfide (DMS) and particulate dimethylsulfoniopropionate (DMSP) (pDMS) distributions is presented. The main goals of this work were to be able to predict the regional distribution of the air-sea fluxes of DMS and to predict eventually their future evolution with climate change. Diagnostic relationships have been established from data sets obtained during the ALBATROSS and EUMELI cruises carried out in the Atlantic Ocean. These equations nonlinearly relate DMS and pDMSP concentrations to chlorophyll concentrations and to the trophic status of surface waters. This model has been embedded in the global ocean carbon cycle model Institut Pierre et Simon Laplace-Ocean Carbon Cycle Model version 2 (ISPL-OCCM2), a simple... |
| Tipo: Text |
Palavras-chave: Ocean; Biogeochemistry; Ecosystem modeling; DMS; Global. |
| Ano: 2002 |
URL: https://archimer.ifremer.fr/doc/00223/33448/31824.pdf |
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| Queiros, Ana M.; Huebert, Klaus B.; Keyl, Friedemann; Fernandes, Jose A.; Stolte, Willem; Maar, Marie; Kay, Susan; Jones, Miranda C.; Hamon, Katell; Hendriksen, Gerrit; Vermard, Youen; Marchal, Paul; Teal, Lorna R.; Somerfield, Paul J.; Austen, Melanie C.; Barange, Manuel; Sell, Anne F.; Allen, Icarus; Peck, Myron A.. |
| The Paris Conference of Parties (COP21) agreement renewed momentum for action against climate change, creating the space for solutions for conservation of the ocean addressing two of its largest threats: climate change and ocean acidification (CCOA). Recent arguments that ocean policies disregard a mature conservation research field and that protected areas cannot address climate change may be oversimplistic at this time when dynamic solutions for the management of changing oceans are needed. We propose a novel approach, based on spatial meta-analysis of climate impact models, to improve the positioning of marine protected areas to limit CCOA impacts. We do this by estimating the vulnerability of ocean ecosystems to CCOA in a spatially explicit manner and... |
| Tipo: Text |
Palavras-chave: Climate change; Conservation; COP21; Ecosystem model; Habitat; Marine spatial planning; Ocean; Ocean acidification; Species distribution; Warming. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00360/47089/48566.pdf |
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| Gourrion, Jerome; Szekely, Tanguy; Killick, Rachel; Owens, Breck; Reverdin, Gilles; Chapron, Bertrand. |
| Realistic ocean state prediction and its validation rely on the availability of high quality in situ observations. To detect data errors, adequate quality check procedures must be designed. This paper presents procedures that take advantage of the ever-growing observation databases that provide climatological knowledge of the ocean variability in the neighborhood of an observation location. Local validity intervals are used to estimate binarily whether the observed values are considered as good or erroneous. Whereas a classical approach estimates validity bounds from first- and second-order moments of the climatological parameter distribution, that is, mean and variance, this work proposes to infer them directly from minimum and maximum observed values.... |
| Tipo: Text |
Palavras-chave: Ocean; Climatology; Salinity; Temperature; Data quality control; Oceanic variability. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00628/74031/73359.pdf |
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| De Mey-frémaux, Pierre; Ayoub, Nadia; Barth, Alexander; Brewin, Robert; Charria, Guillaume; Campuzano, Francisco; Ciavatta, Stefano; Cirano, Mauro; Edwards, Christopher A.; Federico, Ivan; Gao, Shan; Garcia Hermosa, Isabel; Garcia Sotillo, Marcos; Hewitt, Helene; Hole, Lars Robert; Holt, Jason; King, Robert; Kourafalou, Villy; Lu, Youyu; Mourre, Baptiste; Pascual, Ananda; Staneva, Joanna; Stanev, Emil V.; Wang, Hui; Zhu, Xueming. |
| Integration of observations of the coastal ocean continuum, from regional oceans to shelf seas and estuaries/deltas with models, can substantially increase the value of observations and enable a wealth of applications. In particular, models can play a critical role at connecting sparse observations, synthesizing them, and assisting the design of observational networks; in turn, whenever available, observations can guide coastal model development. Coastal observations should sample the two-way interactions between nearshore, estuarine and shelf processes and open ocean processes, while accounting for the different pace of circulation drivers, such as the fast atmospheric, hydrological and tidal processes and the slower general ocean circulation and climate... |
| Tipo: Text |
Palavras-chave: Coastal; Ocean; Observations; Models; Synergy; Synthesis; Assimilation; Array design. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00508/61961/66050.pdf |
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| Tanhua, Toste; Pouliquen, Sylvie; Hausman, Jessica; O’brien, Kevin; Bricher, Pip; De Bruin, Taco; Buck, Justin J. H.; Burger, Eugene F.; Carval, Thierry; Casey, Kenneth S.; Diggs, Steve; Giorgetti, Alessandra; Glaves, Helen; Harscoat, Valerie; Kinkade, Danie; Muelbert, Jose H.; Novellino, Antonio; Pfeil, Benjamin; Pulsifer, Peter L.; Van De Putte, Anton; Robinson, Erin; Schaap, Dick; Smirnov, Alexander; Smith, Neville; Snowden, Derrick; Spears, Tobias; Stall, Shelley; Tacoma, Marten; Thijsse, Peter; Tronstad, Stein; Vandenberghe, Thomas; Wengren, Micah; Wyborn, Lesley; Zhao, Zhiming. |
| Well-founded data management systems are of vital importance for ocean observing systems as they ensure that essential data are not only collected but also retained and made accessible for analysis and application by current and future users. Effective data management requires collaboration across activities including observations, metadata and data assembly, quality assurance and control (QA/QC), and data publication that enables local and interoperable discovery and access and secures archiving that guarantees long-term preservation. To achieve this, data should be findable, accessible, interoperable, and reusable (FAIR). Here, we outline how these principles apply to ocean data and illustrate them with a few examples. In recent decades, ocean data... |
| Tipo: Text |
Palavras-chave: FAIR; Ocean; Data management; Data services; Ocean observing; Standardization; Interoperability. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00509/62068/66248.pdf |
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| Landschuetzer, Peter; Ilyina, Tatiana; Lovenduski, Nicole S.. |
| We use a neural network-based estimate of the sea surface partial pressure of CO2 (pCO(2)) derived from measurements assembled within the Surface Ocean CO2 Atlas to investigate the dominant modes of pCO(2) variability from 1982 through 2015. Our analysis shows that detrended and deseasonalized sea surface pCO(2) varies substantially by region and the respective frequencies match those from the major modes of climate variability (Atlantic Multidecadal Oscillation, Pacific Decadal Oscillation, multivariate ENSO index, Southern Annular Mode), suggesting a climate modulated air-sea exchange of CO2. We find that most of the regional pCO(2) variability is driven by changes in the ocean circulation and/or changes in biology, whereas the North Atlantic variability... |
| Tipo: Text |
Palavras-chave: Ocean; CO2; Variability; Carbon; Climate; Observations. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00675/78733/80972.pdf |
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| Picheral, Marc; Guidi, Lionel; Stemmann, Lars; Karl, David M.; Iddaoud, Ghizlaine; Gorsky, Gabriel. |
| The Underwater Vision Profiler (UVP) was developed to quantify the vertical distribution of macroscopic particles and zooplankton > 100 mu m in size. The smaller size limit is fixed by optical resolution, whereas the larger size limit is determined by the volume of water illuminated per image. The new fifth generation instrument (UVP5) is compact (30 kg in air) and operates either as a stand-alone instrument with an independent power supply for use on a mooring or free-drifting array, or as a component of a Conductivity, Temperature, and Depth (CTD)-rosette package. Images are recorded at a frequency up to 6 Hz. If the UVP5 is interfaced with a CTD, these images are acquired and analyzed in real time. Images are recorded every 20 cm at the 1 m s(-1)... |
| Tipo: Text |
Palavras-chave: Video plankton recorder; Marine snow; MU-M; Vertical distribution; Aggregate dynamics; In situ; System; Ocean; Flux; Phytoplankton. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00133/24413/22426.pdf |
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| Gasparin, Florent; Hamon, Mathieu; Rémy, Elisabeth; Le Traon, Pierre-yves. |
| Global ocean sampling with autonomous floats going to 4,000 m/6,000 m, known as the deep Argo array, constitutes one of the next challenges for tracking climate change. The question here is how such global deep array will impact on ocean reanalyses. Based on the different behavior of four ocean reanalyses, we first identified that large uncertainty exist in current reanalyses in representing local heat and freshwater fluxes in the deep ocean (1 W/m2 and 10 cm/yr regionally). Additionally, temperature and salinity comparison with deep Argo observations demonstrates that reanalysis error in the deep ocean are of the same size, or even stronger, than the deep ocean signal. An experimental approach, using the 1/4◦ GLORYS2V4 system, is then presented to... |
| Tipo: Text |
Palavras-chave: Ocean; Thermocline circulation; Bottom currents; Bottom water; In situ oceanic observations; Reanalysis data; Oceanic variability. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00515/62647/67023.pdf |
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| Regan, Heather; Lique, Camille; Talandier, Claude; Meneghello, Gianluca. |
| The Beaufort Gyre in the Arctic Ocean has spun up over the past two decades in response to changes of the wind forcing and sea ice conditions, accumulating a significant amount of freshwater. Here a simulation performed with a high-resolution, eddy resolving model is analyzed in order to provide a detailed description of the total and eddy kinetic energy, and their response to this spin up of the gyre. On average, and in contrast to the typical open ocean conditions, the levels of mean and eddy kinetic energy are of the same order of magnitude, and the eddy kinetic energy is only intensified along the boundary and in the subsurface. In response to the strong anomalous atmospheric conditions in 2007, the gyre spins up and the mean kinetic energy almost... |
| Tipo: Text |
Palavras-chave: Ocean; Arctic; Eddies; Ocean dynamics; Ocean models. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00598/71015/69288.pdf |
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| Roemmich, Dean; Alford, Matthew H.; Claustre, Hervé; Johnson, Kenneth; King, Brian; Moum, James; Oke, Peter; Owens, W. Brechner; Pouliquen, Sylvie; Purkey, Sarah; Scanderbeg, Megan; Suga, Toshio; Wijffels, Susan; Zilberman, Nathalie; Bakker, Dorothee; Baringer, Molly; Belbeoch, Mathieu; Bittig, Henry C.; Boss, Emmanuel; Calil, Paulo; Carse, Fiona; Carval, Thierry; Chai, Fei; Conchubhair, Diarmuid Ó.; D’ortenzio, Fabrizio; Dall’olmo, Giorgio; Desbruyeres, Damien; Fennel, Katja; Fer, Ilker; Ferrari, Raffaele; Forget, Gael; Freeland, Howard; Fujiki, Tetsuichi; Gehlen, Marion; Greenan, Blair; Hallberg, Robert; Hibiya, Toshiyuki; Hosoda, Shigeki; Jayne, Steven; Jochum, Markus; Johnson, Gregory C.; Kang, Kiryong; Kolodziejczyk, Nicolas; Körtzinger, Arne; Traon, Pierre-yves Le; Lenn, Yueng-djern; Maze, Guillaume; Mork, Kjell Arne; Morris, Tamaryn; Nagai, Takeyoshi; Nash, Jonathan; Garabato, Alberto Naveira; Olsen, Are; Pattabhi, Rama Rao; Prakash, Satya; Riser, Stephen; Schmechtig, Catherine; Schmid, Claudia; Shroyer, Emily; Sterl, Andreas; Sutton, Philip; Talley, Lynne; Tanhua, Toste; Thierry, Virginie; Thomalla, Sandy; Toole, John; Troisi, Ariel; Trull, Thomas W.; Turton, Jon; Velez-belchi, Pedro Joaquin; Walczowski, Waldemar; Wang, Haili; Wanninkhof, Rik; Waterhouse, Amy F.; Waterman, Stephanie; Watson, Andrew; Wilson, Cara; Wong, Annie P. S.; Xu, Jianping; Yasuda, Ichiro. |
| The Argo Program has been implemented and sustained for almost two decades, as a global array of about 4000 profiling floats. Argo provides continuous observations of ocean temperature and salinity versus pressure, from the sea surface to 2000 dbar. The successful installation of the Argo array and its innovative data management system arose opportunistically from the combination of great scientific need and technological innovation. Through the data system, Argo provides fundamental physical observations with broad societally-valuable applications, built on the cost-efficient and robust technologies of autonomous profiling floats. Following recent advances in platform and sensor technologies, even greater opportunity exists now than 20 years ago to (i)... |
| Tipo: Text |
Palavras-chave: Argo; Floats; Global; Ocean; Warming; Circulation; Temperature; Salinity. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00509/62043/66192.pdf |
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| Mazaud, A.; Kissel, C.; Laj, C.; Sicre, M. A.; Michel, E.; Turon, J. L.. |
| We examine the magnetic mineral deposition in three cores located at midlatitude sites in the South Indian Ocean, in an area where sediment eroded from the Kerguelen-Crozet plateau and transported by the marine currents, principally the Antarctic Circum Current, accumulates at a high sedimentation rate. We focus on Marine Isotopic Stage 3, characterized by large climatic fluctuations at northern latitudes, and compare the obtained records to the climatic records at Byrd ( Antarctica) and Summit (GISP2, Greenland) and to the North Atlantic Deep Water variations in the North Atlantic. Magnetic mineral deposition at the studied sites exhibits a profile with maxima at the time of Heinrich events H4 and H5, which suggests a strong Antarctic Circum Current when... |
| Tipo: Text |
Palavras-chave: Paleoceanography; South; Indian; Ocean; Paleoclimatology and paleoceanography; Environmental magnetism; Interhemispheric phasing. |
| Ano: 2007 |
URL: https://archimer.ifremer.fr/doc/00235/34612/32954.pdf |
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| Robson, Jon; Sutton, Rowan T.; Archibald, Alex; Cooper, Fenwick; Christensen, Matthew; Gray, Lesley J.; Holliday, N. Penny; Macintosh, Claire; Mcmillan, Malcolm; Moat, Ben; Russo, Maria; Tilling, Rachel; Carslaw, Ken; Desbruyeres, Damien; Embury, Owen; Feltham, Daniel L.; Grosvenor, Daniel P.; Josey, Simon; King, Brian; Lewis, Alastair; Mccarthy, Gerard D.; Merchant, Chris; New, Adrian L.; O'Reilly, Christopher H.; Osprey, Scott M.; Read, Katie; Scaife, Adam; Shepherd, Andrew; Sinha, Bablu; Smeed, David; Smith, Doug; Ridout, Andrew; Woollings, Tim; Yang, Mingxi. |
| Major changes are occurring across the North Atlantic climate system, including in the atmosphere, ocean and cryosphere, and many observed changes are unprecedented in instrumental records. As the changes in the North Atlantic directly affect the climate and air quality of the surrounding continents, it is important to fully understand how and why the changes are taking place, not least to predict how the region will change in the future. To this end, this article characterizes the recent observed changes in the North Atlantic region, especially in the period 2005–2016, across many different aspects of the system including: atmospheric circulation; atmospheric composition; clouds and aerosols; ocean circulation and properties; and the cryosphere. Recent... |
| Tipo: Text |
Palavras-chave: Atmosphere; Atmospheric composition; Cryosphere; Observations; Ocean; North atlantic. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00454/56606/58298.pdf |
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| Registros recuperados: 48 | |
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