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| Registros recuperados: 128 | |
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| Cabanes, Cecile; Angel-benavides, Ingrid; Buck, Justin; Coatanoan, Christine; Dobler, Delphine; Herbert, Gaelle; Klein, Birgit; Maze, Guillaume; Notarstefano, Guilio; Owens, Breck; Thierry, Virginie; Walicka, Kamila; Wong, Annie. |
| This cookbook is to document the end-to-end processing chain of Delayed Mode Quality Control (DMQC) of Core Argo parameters. It provides guidlines on existing manuals, and explains best practices through case studies. This document was initiated after the 1st EU DMQC workshop held in Brest in April 2018, under the MOCCA project. Lately, this work has been undertaken under EuroArgo RISE project. The document is organized as follows.The first part gives some general information (e.g.: How to check quality indicators in delayed mode? What are the reference databases? How to correct pressure? How to use the OWC software to correct salinity? What are the common failures? etc.). The second part gives more specific information for the regional analysis (specific... |
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| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00678/78994/82152.pdf |
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| Bittig, Henry; Kortzinger, Arne; Johnson, Ken; Claustre, Hervé; Emerson, Steve; Fennel, Katja; Garcia, Hernan; Gilbert, Denis; Gruber, Nicolas; Kang, Dong-jin; Naqvi, Wajih; Prakash, Satya; Riser, Steven; Thierry, Virginie; Tilbrook, Bronte; Uchida, Hiroshi; Ulloa, Osvaldo; Xing, Xiagang. |
| Recommendation for Oxygen Measurements from Argo Floats: Implementation of In-Air-Measurement Routine to Assure Highest Long-term Accuracy As Argo has entered its second decade and chemical/biological sensor technology is improving constantly, the marine biogeochemistry community is starting to embrace the successful Argo float program. An augmentation of the global float observatory, however, has to follow rather stringent constraints regarding sensor characteristics as well as data processing and quality control routines. Owing to the fairly advanced state of oxygen sensor technology and the high scientific value of oceanic oxygen measurements (Gruber et al., 2010), an expansion of the Argo core mission to routine oxygen measurements is perhaps the most... |
| Tipo: Text |
Palavras-chave: Argo; Bio-argo; Oxygen. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00348/45917/46180.pdf |
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| Reverdin, Gilles; Thierry, Virginie; Utiz, Julia; D'Ortenzio, Fabrizio; Bradshaw, Elizabeth; Pfeil, Benjamin. |
| The purpose of task 1 in WP7 in AtlantOS project is to harmonize data exchange and data processing procedures for the EOVs that are acquired by multiple networks. In this framework, the present report [D7.2] establishes recommendations for automatic quality control procedures in Near RT (a few hours to several days) for the core of 7 EOVs (measured by more than one of Networks involved in AtlantOS): • Physics : temperature (T), Salinity (T), Current for surface and subsurface and Sea level • Biogeochemistry : Oxygen (O2), Chlorophyll-A, Nitrate (NO3) and Carbon (pCO2) for surface and subsurface The recommendations have been compiled by experts on those EOVs and validated by the Networks acquiring those EOVs in NRT (link with WP2, WP3 and WP4). These... |
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| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00371/48244/48379.pdf |
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| Le Traon, Pierre-yves; D'Ortenzio, Fabrizio; Babin, Marcel; Leymarie, Edouard; Marec, Claudie; Pouliquen, Sylvie; Thierry, Virginie; Cabanes, Cecile; Claustre, Hervé; Desbruyeres, Damien; Lacour, Leo; Lagunas, Jose-luis; Maze, Guillaume; Mercier, Herle; Penkerc'H, Christophe; Poffa, Noe; Poteau, Antoine; Prieur, Louis; Racape, Virginie; Randelhoff, Achim; Rehm, Eric; Schmechtig, Catherine Marie; Taillandier, Vincent; Wagener, Thibaut; Xing, Xiaogang. |
| Argo, the international array of profiling floats, is a major component of the global ocean and climate observing system. In 2010, the NAOS (Novel Argo Observing System) project was selected as part of the French “Investissements d’Avenir” Equipex program. The objectives of NAOS were to consolidate the French contribution to Argo’s core mission (global temperature and salinity measurements down to 2000 m), and also to develop the future generation of French Argo profiling floats and prepare the next phase of the Argo program with an extension to the deep ocean (Deep Argo), biogeochemistry (BGC-Argo) and polar seas. This paper summarizes how NAOS has met its objectives. The project significantly boosted France’s contribution to Argo’s core mission by... |
| Tipo: Text |
Palavras-chave: Profiling floats; Deep ocean; Biogeochemistry; Mediterranean Sea; Arctic; Atlantic; Argo. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00654/76584/77729.pdf |
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| Cabanes, Cecile; Thierry, Virginie. |
| flThis report describes how the PROVOR and ARVOR oats work close to the sea surface and gives some recommendations on the real time QC tests that should be applied to the near surface salinity and temperature data. The CTD collects discrete (P,T,S) triplets every 10 s but the data is bin-averaged before being transmitted by satellite. Within a slice, instantaneous measurements are rst decimated, keeping triplets that are distant by more than 0.5 dbar and then averaged. Means are calculated using the data at the full resolution available (1 cbar for pressure) and rounded to the transmitted resolution (generally 1 dbar for pressure for ARGOS satellite system, 1 cbar for IRIDIUM). PROVOR and ARVOR floats acquire temperature and salinity data all the way up to... |
| Tipo: Text |
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| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00405/51630/52185.pdf |
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| De Boisseson, Eric; Thierry, Virginie; Mercier, Herle; Caniaux, G.. |
| The mixed layer processes that govern the mode water properties in the Iceland Basin are quantified through a mixed layer heat budget from Argo data collected over 2001-2007. This budget includes the mixed layer heat content variation, the surface heat fluxes, and the Ekman contribution to advection. The geostrophic advection cannot be directly estimated from Argo data but, following previous works, an ad hoc procedure is implemented to take it into account. The resulting annual budget is closed within the error bar but this closure hides some compensation between the summer and the winter residuals (-16 +/- 9 W m(-2) and 21 +/- 26 W m(-2), respectively). A similar heat budget built by using colocated Argo floats in the 1/4 degrees DRAKKAR ORCA025-G70fo... |
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| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00017/12807/9761.pdf |
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| Zunino Rodriguez, Patricia; Mercier, Herle; Thierry, Virginie. |
| After more than a decade of shallow convection, deep convection returned to the Irminger Sea in 2008 and occurred several times since then to reach exceptional convection depths (> 1500 m) in 2015 and 2016. Additionally, deep mixed layers deeper than 1600 m were also reported southeast of Cape Farewell in 2015. In this context, we used Argo data to show that deep convection occurred southeast of Cape Farewell (SECF) in 2016 and persisted during two additional years in 2017 and 2018 with a maximum convection depth deeper than 1300 m. In this article, we investigate the respective roles of air-sea buoyancy flux and preconditioning of the water column (ocean interior buoyancy content) to explain this 4-year persistence of deep convection SECF. We analyzed... |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00606/71776/70265.pdf |
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| Thierry, Virginie; De Boisseson, Eric; Mercier, Herle. |
| Combining hydrographic data from the OVIDE (Observatoire de la Variabilité Interannuelle à Decennale/Observatory of the Interannual to Decadal Variability) section (Greenland-Portugal) with Argo and historical CTD data over the period 19902006, we estimate the variability of the core properties of a variety of Subpolar Mode Water (SPMW) observed on the eastern flank of the Reykjanes Ridge. This SPMW acquires its core properties in the winter mixed layer along the eastern side of the Reykjanes Ridge. We find that the February sea surface temperature along the ridge is a proxy for its core temperature. The sources of this mode water are water masses advected by the mean cyclonic circulation in the Iceland Basin. A density compensated tendency for cooling... |
| Tipo: Text |
Palavras-chave: North Atlantic Oscillation; Subpolar mode water; North Atlantic Ocean. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3487.pdf |
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| Coatanoan, Christine; Galaup, P; Thierry, Virginie. |
| Introduction on Delayed Mode QC: Recalibration is generally not possible due to the no recoverable nature of floats, so float datasets are usually check to an indirect way. Here we present the application of a method based on mapping a set of calibrated data by objective analyzing to the float profile position. The method applied at the Coriolis Data Center is the method of Annie Wong et al (2003) [1] adapted to North Atlantic environment by Lars Böhme [2] to produce the delayed mode data for Gyroscope project in a first time. Recalibration is set up to correct sensor drifts by using historical hydrographic data. The used objective mapping method takes into account the high spatial and temporal variabilities of the North Atlantic [2]. Assuming that a... |
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| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/acte-4690.pdf |
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| Branellec, Pierre; Thierry, Virginie. |
| The Reykjanes Ridge is a major topographic feature of the North-Atlantic Ocean. It lies in a central position along the main paths followed by the upper and lower limbs of the Meridional Overturning Cell (MOC), which contributes at moderating the European climate in creating a transport of heat toward the North Atlantic. Our hypothesis is that the Reykjanes Ridge influences the main components of the upper and lower limbs of the MOC because it is a strong constraint on the horizontal and vertical circulation, it impacts the water mass distribution and evolution and it is a region of intense turbulent mixing. The objective of the RREX project is to conduct a process study in order to better understand the role of the Reykjanes Ridge on the dynamics and... |
| Tipo: Text |
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| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00360/47156/47114.pdf |
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| Registros recuperados: 128 | |
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