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| Registros recuperados: 26 | |
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| Gras, Michael; Roel, Beatriz A.; Coppin, Franck; Foucher, Eric; Robin, Jean-paul. |
| The English Channel cuttlefish (Sepia officinalis) is the most abundant cephalopod resource in the Northeast Atlantic and one of the three most valuable resources for English Channel fishers. Depletion methods and age-structured models have been used to assess the stock, though they have shown limitations related to the model assumptions and data demand. A two-stage biomass model is, therefore, proposed here using, as input data, four abundance indices derived from survey and commercial trawl data collected by Ifremer and Cefas. The model suggests great interannual variability in abundance during the 17 years of the period considered and a decreasing trend in recent years. Model results suggest that recruitment strength is independent of spawning-stock... |
| Tipo: Text |
Palavras-chave: Abundance indices; English Channel; Exploitation rate; Sepia officinalis; SST; Stock–recruitment relationship; Trawl survey; Two-stage biomass model. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00248/35923/34448.pdf |
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| Vautravers, Maryline J.; Shackleton, Nicholas J.. |
| The marine isotopic stage 3 (MIS3) at Ocean Drilling Program (ODP) Site 1060 (Gulf Stream) shows both sharp onset and end of interstadials, the existence of very short lived warm events during stadials, and points to differences in detail between the sea surface temperature (SST) record from the western North Atlantic and the atmospheric temperature record inferred from delta O-18 in Greenland ice. Investigating MIS3 and obtaining comparable data from other locations appears crucial. The eastern Atlantic provides well-documented records of climate changes. We have selected a core from off Portugal and use it to examine Dansgaard/Oeschger events (D/O) at centennial-scale resolution (139 years on average between two data points). We have obtained a faunal... |
| Tipo: Text |
Palavras-chave: SST; Planktonic foraminifera; Last glacial. |
| Ano: 2006 |
URL: https://archimer.ifremer.fr/doc/00234/34548/33352.pdf |
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| Bentamy, Abderrahim; Grodsky, Semyon A.; Chapron, Bertrand; Carton, James A.. |
| Global winds provided by satellite scatterometry are an important aspect of the ocean observing system. Many applications require well-calibrated time series of winds over time periods spanned by multiple missions. But sensors on individual satellites differ, introducing differences in wind estimates. This study focuses on global winds from two scatterometers, ERS-2 (1996-2001) and QuikSCAT (1999-2009) that show persistent differences during their period of overlap (July-1999 to January 2001). We examine a set of collocated observations during this period to evaluate the causes of these differences. The use of different operating frequencies leads to differences that depend on rain rate, wind velocity, and SST. The enhanced sensitivity to rain rate of the... |
| Tipo: Text |
Palavras-chave: Scatterometer winds; SST; Inter-instrument bias. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00139/25071/23190.pdf |
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| Letson, David; McCullough, B.D.. |
| In this paper we seek to characterize the robustness of the ENSO/soybean price relationship and to determine whether it has practical economic content. If such a meaningful relationship exists, the implications could be profound for commodity traders and for public sector investments in climate forecasting capabilities. Also, the validity of economic evaluations of climate impacts and climate forecasts based on ENSO-price independence would come into question. Our findings suggest a relationship between interannual climate and soybean prices, although we are not able to attribute the relationship to ENSO or to say the ENSO is economically important. |
| Tipo: Journal Article |
Palavras-chave: Climate forecasting; Granger causality; Spectral analysis; SOI; SST; Resource /Energy Economics and Policy; C22; Q11. |
| Ano: 2001 |
URL: http://purl.umn.edu/15443 |
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| Lampert, Luis. |
| Le manque de données disponibles sur les eaux marines guyanaises peut en partie être comblé par l’apport des images satellite remontant à plus de 10 années. Cette étude propose de faire le point sur l’évolution de la température de surface de la mer (SST) dans le cadre de la DCE. Une approche régionale et locale a été menée afin de déterminer si la température est suffisamment discriminante pour permettre une proposition de découpage de la masse d’eau côtière MEC. |
| Tipo: Text |
Palavras-chave: DCE; SST; Guyane; Satellite; ODYSSEA; OSTIA; Masse d’eau côtière. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00294/40509/39305.pdf |
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| Kaimuddin, Awaluddin H.; Laë, Raymond; Tito De Morais, Luis. |
| The presence of tropical species has been reported in Atlantic-European waters with increasing frequency in recent years. Unfortunately, the history of their migrations is not well understood. In this study, we examined the routes and timing of fish migrations in several ecosystems of the East Atlantic Ocean, combining several publicly available and unpublicized datasets on species occurrences. The species studied were those noted as exotic or rare outside their previous known area of distribution. We used sea surface temperature (SST) data obtained from 30 years of satellite observation to define three distinct time periods. Within these periods, temperature trends were studied in six ecosystems: the North Sea, the Celtic Sea, the South European Atlantic... |
| Tipo: Text |
Palavras-chave: Speciesmigration; Atlantic-europeanwaters; Biogeographic; SST; Bathymetry; GIS. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00469/58030/60434.pdf |
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| Romero, O. E.; Kim, J. -h.; Barcena, M. A.; Hall, I. R.; Zahn, R.; Schneider, R.. |
| The hydrography of the Indian-Atlantic Ocean gateway has been connected to high-latitude climate dynamics by oceanic and atmospheric teleconnections on orbital and suborbital timescales. A wealth of sedimentary records aiming at reconstructing the late Pleistocene paleoceanography around the southern African continent has been devoted to understanding these linkages. Most of the records are, however, clustered close to the southern South African tip, with comparatively less attention devoted to areas under the direct influence of frontal zones of the Southern Ocean/South Atlantic. Here we present data of the composition and concentration of the diatom assemblage together with bulk biogenic content and the alkenone-based sea surface temperature (SST)... |
| Tipo: Text |
Palavras-chave: Agulhas; SST; Diatoms; Fronts; Silica; Southern Ocean. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00294/40555/39440.pdf |
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| Rodriguez-sanz, Laura; Graham Mortyn, P.; Herguera, Juan C.; Zahn, Rainer. |
| Fine-scale, paired Mg/Ca-O-18 profiles (Globigerinoides ruber white, sensu lato) from the San Lazaro Basin (SLB) at 25 degrees N in the Northeast Pacific reveal a transition from a predominant presence of tropical/subtropical waters during the last glacial termination (T1) to an increasing influence of fresh and cold California Current waters toward the Holocene. Changing atmospheric circulation patterns over the Northeast Pacific in step with the demise of the Northern Hemisphere ice sheets and/or with a shift from El Nino- to La Nina-like conditions toward the Holocene are prime candidates to explain this water mass change. O-18(SW-IVC) increases of similar to 0.5-0.7 during the Younger Dryas (YD) and Heinrich stadial 1 (HS1) at the SLB are observed in a... |
| Tipo: Text |
Palavras-chave: SST; California margin; Last deglaciation. |
| Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00264/37491/35812.pdf |
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| ADRIANO-ANAYA,LOURDES; TREJO-ROBLERO,GUADALUPE; ROSAS-QUIJANO,RAYMUNDO; VELÁZQUEZ-OVALLE,GAMALIEL; VÁZQUEZ-OVANDO,ALFREDO. |
| RESUMEN El objetivo del presente estudio fue evaluar la influencia de la aplicación de fertilizantes orgánicos a árboles adultos de marañón por un ciclo productivo sobre la producción y calidad de frutos y pseudofrutos. Para lo anterior, se establecieron tres tratamientos: fertilización orgánica (BIO), fertilización sintética (FS) y sin fertilización (SF). Se cuantificó el número de panículas m-3, número de flores por panícula y el número de frutos m-3 en los árboles. Después del corte, a frutos y pseudofrutos se analizaron propiedades físicoquímicas de interés. Aunque el tratamiento FS promovió mayor número de panículas por unidad de área foliar (P < 0.05) sobre los otros tratamientos, el rendimiento fue igual (P > 0.05), medido como la cantidad de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: SST; Lípidos; Actividad antioxidante; Anacardium occidentale; Biofertilizantes. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000500702 |
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| Costoya, X.; Fernandez-novoa, D.; Decastro, M.; Santos, F.; Lazure, Pascal; Gomez-gesteira, M.. |
| The influence of Loire and Gironde River discharges over the sea surface temperature (SST) in the eastern Bay of Biscay (0.6º–36.6ºW, 44.2º–47.8ºW) was analyzed by means of two complementary databases (MODIS and OISST1/4). The area influenced by river plume showed a different SST when compared with the adjacent oceanic area for the months when the plume attains its highest extension (December, January, and February). Ocean was observed to warm at a rate of approximately 0.3ºC dec−1 while temperature at the area influenced by the rivers cooled at a rate of −0.15ºC dec−1 over the period 1982–2014. The mere presence of a freshwater layer is able to modulate the warming observed at adjacent ocean locations since the coastal area is isolated from the rest of... |
| Tipo: Text |
Palavras-chave: Loire; Gironde; SST; River plume; Warming modulation. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00311/42172/41472.pdf |
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| Dyez, Kelsey A.; Zahn, Rainer; Hall, Ian R.. |
| New high-resolution sea surface temperature (SST) and sea surface salinity (SSS) estimates are presented from the Agulhas Bank slope in the Atlantic sector of the Agulhas Corridor using planktic foraminiferal (Globigerinoides ruber) O-18 and Mg/Ca-derived SST. By focusing on the last 80,000years, this is the first fine-scale Agulhas leakage record that overlaps in time with much of the Greenland ice core record of abrupt climate changes in the North Atlantic region. The multicentennial profiles indicate instances of warm SST and/or increased SSS coincident with Northern Hemisphere cool periods, followed by Northern Hemisphere warming. These periods of enhanced SST and SSS in the Agulhas Corridor occur at the last glacial termination (T1) and during North... |
| Tipo: Text |
Palavras-chave: Agulhas leakage; SST. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00289/40041/39390.pdf |
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| Menesguen, Alain; Gohin, Francis. |
| Accumulation of heat, or dissolved substances (nutrients, pollutants, etc.), or fine suspended particles in a water body is a key process in the functioning of aquatic ecosystems and their resistance to perturbations. In complex and wide open environments such as marine ecosystems, net accumulation is not only linked to the local renewal capacity of the water body, but also to the partial recirculation of water due to convective cells of various sizes. The English Channel, which can be considered as mainly dominated by tidal movements, exhibits such a complex quasi-permanent long-term circulation, made of a central "river" bordered with a lot of nested gyres. Here, we show that structures visible on satellite images of SST (Sea Surface Temperature),... |
| Tipo: Text |
Palavras-chave: Remote sensing; Suspended Particulate Matter; Chlorophyll; SST; Retention structures; Tidal residual circulation; Steady state model; English Channel. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-2181.pdf |
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| L'Heveder, Blandine; Speich, Sabrina; Ragueneau, Olivier; Gohin, Francis; Bryere, Philippe. |
| Seasonal Sea Surface Temperature (SST) changes in the Western English Channel have been estimated for the previous decades from high-resolution satellite data. Coastal seas, well separated from offshore waters by intense frontal structures, show colder SST by 1 to 2°C in summer. A significant warming trend is observed in the autumn season. This positive trend is stronger offshore, with an annual mean SST increase of 0.32°C/decade, but weaker in coastal waters (0.23°C/decade), where strong vertical mixing induced by tides and winds acts to reduce surface warming. The performance of an ensemble of CMIP5 climate model in simulating recent seasonal changes of SST in the region is estimated. The median of CMIP5 models reproduces very well the observed SST mean... |
| Tipo: Text |
Palavras-chave: SST; Climate change; Western English Channel; CMIP5; Regional study. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00350/46163/45861.pdf |
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| Pereira,Miréia Aparecida Bezerra; Siebeneichler,Susana Cristine; Lorençoni,Rogério; Adorian,Gentil Cavalheiro; Silva,Jucielle Cardoso da; Garcia,Rogério Braga Maciel; Pequeno,Diego Noleto Luz; Souza,Clóvis Maurílio de; Brito,Raimundo Filho Freire de. |
| Os produtores do estado do Tocantins estão tendo de manter ou melhorar o padrão de qualidade dos seus frutos, para garantirem uma boa comercialização. o trabalho objetivou avaliar a qualidade dos frutos de abacaxi comercializados na cooperativa Cooperfruto em Miranorte-TO, e verificar se estes se encontram dentro dos padrões mínimos exigidos para comercialização visando ao consumo in natura. a coleta de dados foi realizada no período de novembro de 2006 a maio de 2007, onde foram analisados mensalmente frutos de abacaxi 'Pérola' que eram comercializados pela cooperativa. em cada mês, foram feitas análises físico-químicas de frutos provenientes das cidades produtoras que fazem parte da cooperativa. os parâmetros avaliados foram: a massa do fruto com e sem... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ananas Comosus; Comercialização; SST; ATT. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452009000400018 |
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| Lopes Dos Santos, Raquel A. |
| NW Africa and SE Australia are regions which are particularly vulnerable to climate change. In this thesis, organic proxies are used from marine sediment cores to reconstruct past environmental conditions from these areas. In sediments from NW Africa, the UK'37 showed an efficient proxy for sea surface temperature (SST) reconstruction, while the TEXH86 reconstructed thermocline temperatures. The UK'37 and TEXH86 records for the last 192 ka showed that periods of reduced AMOC coincide with a reduction in the vertical temperature gradient. Thus, variations in AMOC strength is a driver of the thermocline structure in the tropical Atlantic. Three independent organic proxies (UK’37,TEXH86 and LDI) were used to reconstruct SSTs for the last 135 ka in sediments... |
| Tipo: Text |
Palavras-chave: Keywords: organic proxies; Paleoclimate; NW Africa; SE Australia; SST; Productivity; Vegetation. |
| Ano: 2012 |
URL: https://archimer.ifremer.fr/doc/00494/60594/64078.pdf |
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| Darfeuil, Sophie; Menot, Guillemette; Giraud, Xavier; Rostek, Frauke; Tachikawa, Kazuyo; Garcia, Marta; Bard, Edouard. |
| This study aims at providing robust temperature reconstructions for a key oceanographic setting in the North Atlantic and at understanding the nature of the temperature signal recorded by the two biomarkers U-37(k) and TEX86, considering season and depth of production. To do so, high-resolution signals of U-37(k) and TEX86 are determined for the last 70kyr for core MD95-2042, located off Portugal. Signals of U-37(k) and TEX86 present a tight correlation, demonstrating a dominant temperature effect. U-37(k) signals correspond well to the annual mean sea surface temperature (SST), whereas TEX86H-derived temperatures are 5.6 degrees C higher, which is unrealistically warm for this area. Unsuitable TEX86 global linear calibrations on the Iberian Margin may... |
| Tipo: Text |
Palavras-chave: Uk'37; TEX86; Iberian Margin; ROMS simulations; Modeled temperature proxy; SST. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00421/53288/54207.pdf |
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| Bachem, Paul E.; Risebrobakken, Bjorg; Mcclymont, Erin L.. |
| The mid-Piacenzian warm period (3.264-3.025 Ma) of the Pliocene epoch has been proposed as a possible reference for future warm climate states. However, there is significant disagreement over the magnitude of high latitude warming between data and models for this period of time, raising questions about the driving mechanisms and responsible feedbacks. We have developed a new set of orbital-resolution alkenone-based sea surface temperature (SST) and ice rafted debris (IRD) records from the Norwegian Sea spanning 3.264-3.14 Ma. The SSTs in the Norwegian Sea were 2-3 degrees C warmer than the Holocene average, likely caused by the radiative effect of higher atmospheric CO2 concentrations. There is notable obliquity-driven SST variability with a range of 4... |
| Tipo: Text |
Palavras-chave: Pliocene; Norwegian Sea; ODP Site 642; Alkenones; SST; Subpolar gyre. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00421/53230/83372.pdf |
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| Registros recuperados: 26 | |
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