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PIRATA: A Sustained Observing System for Tropical Atlantic Climate Research and Forecasting ArchiMer
Bourlès, Bernard; Araujo, Moacyr; Mcphaden, Michael J.; Brandt, Peter; Foltz, Gregory R.; Lumpkin, Rick; Giordani, Hervé; Hernandez, Fabrice; Lefèvre, Nathalie; Nobre, Paulo; Campos, Edmo; Saravanan, Ramalingam; Trotte‐duhà, Janice; Dengler, Marcus; Hahn, Johannes; Hummels, Rebecca; Lübbecke, Joke F.; Rouault, Mathieu; Cotrim, Leticia; Sutton, Adrienne; Jochum, Markus; Perez, Renellys C.
PIRATA is a multinational program initiated in 1997 in the tropical Atlantic to improve our understanding and ability to predict ocean‐atmosphere variability. PIRATA consists of a network of moored buoys providing meteorological and oceanographic data transmitted in real‐time to address fundamental scientific questions as well as societal needs. The network is maintained through dedicated yearly cruises, which allow for extensive complementary shipboard measurements and provide platforms for deployment of other components of the Tropical Atlantic Observing System. This paper describes network enhancements, scientific accomplishments and successes obtained from the last 10 years of observations, as well as additional results enabled by cooperation with...
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Ano: 2019 URL: https://archimer.ifremer.fr/doc/00485/59680/62752.pdf
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Toward the Integrated Marine Debris Observing System ArchiMer
Maximenko, Nikolai; Corradi, Paolo; Law, Kara Lavender; Van Sebille, Erik; Garaba, Shungudzemwoyo P.; Lampitt, Richard Stephen; Galgani, Francois; Martinez-vicente, Victor; Goddijn-murphy, Lonneke; Veiga, Joana Mira; Thompson, Richard C.; Maes, Christophe; Moller, Delwyn; Löscher, Carolin Regina; Addamo, Anna Maria; Lamson, Megan R.; Centurioni, Luca R.; Posth, Nicole R.; Lumpkin, Rick; Vinci, Matteo; Martins, Ana Maria; Pieper, Catharina Diogo; Isobe, Atsuhiko; Hanke, Georg; Edwards, Margo; Chubarenko, Irina P.; Rodriguez, Ernesto; Aliani, Stefano; Arias, Manuel; Asner, Gregory P.; Brosich, Alberto; Carlton, James T.; Chao, Yi; Cook, Anna-marie; Cundy, Andrew B.; Galloway, Tamara S.; Giorgetti, Alessandra; Goni, Gustavo Jorge; Guichoux, Yann; Haram, Linsey E.; Hardesty, Britta Denise; Holdsworth, Neil; Lebreton, Laurent; Leslie, Heather A.; Macadam-somer, Ilan; Mace, Thomas; Manuel, Mark; Marsh, Robert; Martinez, Elodie; Mayor, Daniel J.; Le Moigne, Morgan; Molina Jack, Maria Eugenia; Mowlem, Matt Charles; Obbard, Rachel W.; Pabortsava, Katsiaryna; Robberson, Bill; Rotaru, Amelia-elena; Ruiz, Gregory M.; Spedicato, Maria Teresa; Thiel, Martin; Turra, Alexander; Wilcox, Chris.
Plastics and other artificial materials pose new risks to the health of the ocean. Anthropogenic debris travels across large distances and is ubiquitous in the water and on shorelines, yet, observations of its sources, composition, pathways, and distributions in the ocean are very sparse and inaccurate. Total amounts of plastics and other man-made debris in the ocean and on the shore, temporal trends in these amounts under exponentially increasing production, as well as degradation processes, vertical fluxes, and time scales are largely unknown. Present ocean circulation models are not able to accurately simulate drift of debris because of its complex hydrodynamics. In this paper we discuss the structure of the future integrated marine debris observing...
Tipo: Text Palavras-chave: Plastics; Marine debris; Sensor development; Observing network; Ecosystemstressors; Maritime safety.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00511/62272/66477.pdf
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Vortex pairing in an unstable anticyclonic shear flow: discrete subharmonics of one pendulum day ArchiMer
Flament, Pierre; Lumpkin, Rick; Tournadre, Jean; Armi, Laurence.
Observations of the downstream evolution of an oceanic zonal horizontal shear flow at a Reynolds number of about 10(11), formed as the westward North Equatorial Current passes the island of Hawai'i, reveal finite-amplitude anticyclonic vortices resulting from instability of the shear. The initial orbital period of the vortices is exactly one pendulum day (3.1 days at this latitude), centrifugal instability presumably inhibiting stronger vortices from forming. As they move downstream, they appear to pair and merge into successively larger vortices, in a geometric sequence of longer orbital periods; three subharmonic transitions are suggested with final orbital periods near 6, 12 and 24 days.
Tipo: Text Palavras-chave: Vortex; Oceanic shear flow.
Ano: 2001 URL: http://archimer.ifremer.fr/doc/2001/publication-644.pdf
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