Filters








726 Hits in 4.7 sec

Impact of Drifter Deployment on the Quality of Ocean Sensing [chapter]

Konstantinos P. Ferentinos, Niki Trigoni, Silvia Nittel
2008 Lecture Notes in Computer Science  
, iii) the effect of the number of basestations (drifters with satellite connectivity) on the overall network connectivity, and iv) the optimal communication range of the basic drifters.  ...  Surface drifters are designed specifically to move passively with the flow of water on the ocean surface and they are able to acquire sensor readings and GPS-generated positions at regular intervals.  ...  Conclusions In this paper, we investigated the impact of the drifter deployment strategy on the quality of ocean sensing performed using a fleet of drifters passively propelled by surface currents.  ... 
doi:10.1007/978-3-540-79996-2_2 fatcat:hbdle27r6jaspnjcvnepxuflzm

Sea Surface Salinity Observations with Lagrangian Drifters in the Tropical North Atlantic During SPURS: Circulation, Fluxes, and Comparisons with Remotely Sensed Salinity from Aquarius
English

Luca Centurioni, Verena Hormann, Yi Chao, Gilles Reverdin, Jordi Font, Dong-Kyu Lee
2015 Oceanography  
surface salinity observations with Lagrangian drifters in the tropical North Atlantic during SPURS: Circulation, fluxes, and comparisons with remotely sensed salinity from Aquarius.  ...  SVP and SVPS drifters described in this study were provided by the GDP of NOAA at SIO, grant #NA10OAR4320156. LC, VH, and DL were supported by NASA grant #NNX12AI67G, and NOAA grant #NA10OAR4320156.  ...  Lance Braasch is gratefully acknowledged for implementing and managing real-time distribution of SVP and SVPS data to the SPURS-1 investigators and for data analysis support.  ... 
doi:10.5670/oceanog.2015.08 fatcat:clt3tg2uhndqlbulsaui6js5re

Lessons Learned From Operating Global Ocean Observing Networks

Robert L. Molinari
1999 Bulletin of The American Meteorological Society - (BAMS)  
As more data become available it is found that scales of important phenomena such as equatorial upwelling are smaller, and highfrequency signals can impact on the mean structure of the upper ocean.  ...  of the dynamics of the ocean and atmosphere.  ...  The assistance of Yeun-Ho Daneshzadeh and Mayra Pazos in generating figures for this effort are gratefully acknowledged.  ... 
doi:10.1175/1520-0477(1999)080<1413:llfogo>2.0.co;2 fatcat:dzhnx323hrgb7lzvlnrqwbspty

Global in situ Observations of Essential Climate and Ocean Variables at the Air–Sea Interface

Luca R. Centurioni, Jon Turton, Rick Lumpkin, Lancelot Braasch, Gary Brassington, Yi Chao, Etienne Charpentier, Zhaohui Chen, Gary Corlett, Kathleen Dohan, Craig Donlon, Champika Gallage (+23 others)
2019 Frontiers in Marine Science  
High-impact uses of ocean surface observations of essential ocean/climate variables (EOVs/ECVs) include (1) assimilation into/validation of weather, ocean, and climate forecast models to improve their  ...  We review strengths and limitations, impacts, and sustainability of in situ ocean surface observations of several ECVs and EOVs. We draw a 10-year vision  ...  The 10 drifters were air-deployed at five stations using the deployment package shown in panel (B). Each box contained one SVP-B drifter and one directional wave spectra (DWS) drifter.  ... 
doi:10.3389/fmars.2019.00419 fatcat:q66kjg2yhng6dhmr37472moiqy

The design and testing of small, low-cost GPS-tracked surface drifters

Jay Austin, Sten Atkinson
2004 Estuaries  
The drifters follow the upper 30 cm of surface currents, but can be modified to follow water at any depth.  ...  , and make experiments that require large numbers of drifters more cost-effective.  ...  ACKNOWLEDGMENTS The authors would like to thank Chris Powell for his advice regarding the construction of the drifters and Dan Stilwell, Iris Anderson, and the staff of the Virginia Institute of Marine  ... 
doi:10.1007/bf02803428 fatcat:u6mhxdmuevbwlhvfm3jybaia7m

Variability of Near-Surface Circulation and Sea Surface Salinity Observed from Lagrangian Drifters in the Northern Bay of Bengal During the Waning 2015 Southwest Monsoon

Verena Hormann, Luca Centurioni, Amala Mahadevan, Sebastian Essink, Eric D'Asaro, B. Praveen Kumar
2016 Oceanography  
Variability of near-surface circulation and sea surface salinity observed from Lagrangian drifters in the northern Bay of Bengal during the waning 2015 southwest monsoon.  ...  The array was largely organized in clusters consisting of three SVP-S drifters plus one SVP drifter (i.e., ~5 min apart), with most deployments on the fresher side of the salinity front.  ...  The reason for the additional deployment of standard SVP drifters was to improve the overall representation of the surface circulation in the BoB where observations of ocean currents are lacking.  ... 
doi:10.5670/oceanog.2016.45 fatcat:qdapbrbk7vbn5bjiaz2w4v4bju

Thirty years of research and development of Lagrangian buoys at the Institute of Marine Sciences

Emilio García-Ladona, Joaquim Salvador, Pere Fernandez, Josep L. Pelegrí, Pedro Elósegui, Oriol Sánchez, Jose Antonio Jiménez Madrid, Fernando Pérez, Joaquim Ballabrera, Jordi Isern-Fontanet, Jordi Salat, Jordi Font
2016 Scientia Marina  
Since the mid-1980s, physical oceanographers at the Institute of Marine Sciences have been involved in the use of Lagrangian drifters as a complementary technology for their oceanographic research.  ...  As Lagrangian observations became more feasible, these researchers continued developing their own drifters in what was to be the seed of current technological activities at the Physical and Technological  ...  Fig. 22 . 22 -Ocean tracks of the sea-ice drifting geodetic-quality SATICE buoys collecting data on the Arctic Ocean since 2011.  ... 
doi:10.3989/scimar.04325.14a fatcat:l2lmsv6cxfbibfwsivauoqys3u

Data Correlation and Comparison from Multiple Sensors Over a Coral Reef with a Team of Heterogeneous Aquatic Robots [chapter]

Alberto Quattrini Li, Ioannis Rekleitis, Sandeep Manjanna, Nikhil Kakodkar, Johanna Hansen, Gregory Dudek, Leonardo Bobadilla, Jacob Anderson, Ryan N. Smith
2017 Springer Proceedings in Advanced Robotics  
Coverage strategies are discussed with a focus on the use of informed decisions to maximize the information collected during a fixed period of time.  ...  This paper presents experimental insights from the deployment of an ensemble of heterogeneous autonomous sensor systems over a shallow coral reef.  ...  Examining and comparing the data products of the drifters and the ASV, it is possible to observe the lower camera quality of the drifter.  ... 
doi:10.1007/978-3-319-50115-4_62 dblp:conf/iser/LiRMKHDBAS16 fatcat:4d6otuaj65fzpfnd4rj22vvlyu

Dispersion of Surface Drifters in the Tropical Atlantic

Erik van Sebille, Erik Zettler, Nicolas Wienders, Linda Amaral-Zettler, Shane Elipot, Rick Lumpkin
2021 Frontiers in Marine Science  
We also show that the novel Surface and Merged Ocean Currents (SMOC) product from the Copernicus Marine Environmental Service (CMEMS) does not clearly simulate one type of drifter better than the other  ...  Here, we analyze a dataset of two types of surface drifters (38 in total), purposely deployed in the Tropical Atlantic Ocean in July, 2019.  ...  Each pair consisted of one NOAA and one MétéoFrance SVP drifter, except for the last deployment of two MétéoFrance SVP drifters.  ... 
doi:10.3389/fmars.2020.607426 fatcat:zd26rxqcuvfw7g65sumxpem4vy

Technological Advances in Ocean Sciences Resulting from the Deepwater Horizon Oil Spill

Laura Bracken, Dan Dinicola, Jessie Kastler, Sara Beresford
2019 Current: The Journal of Marine Education  
Özgökmen, Martin Grosell, and Lela Schlenker for review of the article; and Cedric Guigand for his image contributions and review of the article.  ...  ACKNOWLEDGMENTS In addition to the acknowledgments for the full issue, the authors of this article would like to thank Nancy Rabalais and Dave Mellinger for their contribution to the manuscript; Tamay  ...  CARTHE uses adaptive sampling to select the location for drifter deployments.  ... 
doi:10.5334/cjme.23 fatcat:uzi3eeqsnnc2nbfq4s2z7pj6re

Novel and Flexible Approach to Access the Open Ocean: Uses of Sailing Research Vessel Lady Amber During SPURS-2

Luc Rainville, Luca Centurioni, William Asher, Carol Anne Clayson, Kyla Drushka, James Edson, Benjamin Hodges, Verena Hormann, J. Thomas Farrar, Julian Schanze, Andrey Shcherbina
2019 Oceanography  
Low operational costs allowed us to frequently deploy floats and drifters to collect data necessary for resolving the regional circulation of the eastern tropical Pacific.  ...  SPURS-2 (Salinity Processes in the Upper-ocean Regional Study 2) used the schooner Lady Amber, a small sailing research vessel, to deploy, service, maintain, and recover a variety of oceanographic and  ...  ACKNOWLEDGMENTS Tragically, Lady Amber Captain Peter Flanagan passed away on March 15, 2016, after the initial transit.  ... 
doi:10.5670/oceanog.2019.219 fatcat:gj6c2sb3qnaztma2tzu7x64nt4

Pressure and inertia sensing drifters for glacial hydrology flow path measurements

Andreas Alexander, Maarja Kruusmaa, Jeffrey A. Tuhtan, Andrew J. Hodson, Thomas V. Schuler, Andreas Kääb
2020 The Cryosphere  
Magnetometer readings also exhibited low variability across deployments, maintaining readings within ±2.45 % of the time-averaged mean of the magnetometer magnitudes.  ...  Recently, sensing drifters have shown promise in river, coastal and oceanographic studies. However, practical experience with drifters in glacial hydrology remains limited.  ...  The threshold criteria used, for determining the start of measurement, were the linear acceleration peaks of a drifter's first impact with the water surface during deployment as well as the final impact  ... 
doi:10.5194/tc-14-1009-2020 fatcat:24xsfulqibhilhi2acu3wv5xaq

Temperature Measurements from Surface Drifters

G. Reverdin, J. Boutin, N. Martin, A. Lourenco, P. Bouruet-Aubertot, A. Lavin, J. Mader, P. Blouch, J. Rolland, F. Gaillard, P. Lazure
2010 Journal of Atmospheric and Oceanic Technology  
as well as for the set of Pacific Gyre drifters (on the order of 0.058C).  ...  This initial bias is null (or slightly negative) for the set of Clearwater Instrumentation's drifters, it is very small for two out of three sets of Technocean drifters, and positive for the third one,  ...  We are thankful for the opportunity to participate on French research cruises, in particular on the R/Vs Cô tes de la Manche (INSU) and Antea (IRD) and to our colleagues of SHOM (Yves Morel) and IFREMER  ... 
doi:10.1175/2010jtecho741.1 fatcat:bvydrzxrkzboxgwf5s25hvwy2u

A multi-model assessment of the impact of currents, waves and wind in modelling surface drifters and oil spill

M. De Dominicis, D. Bruciaferri, R. Gerin, N. Pinardi, P.M. Poulain, P. Garreau, G. Zodiatis, L. Perivoliotis, L. Fazioli, R. Sorgente, C. Manganiello
2016 Deep-sea research. Part II, Topical studies in oceanography  
We found that the surface ocean currents mainly drive the transport of completely submerged drifters.  ...  drifters trajectories were used to evaluate the quality of MEDESS4MS multimodel currents, waves and winds by using the MEDSLIK-II oil spill model.  ...  drifter deployments into the oil slick on 17 May 2014.  ... 
doi:10.1016/j.dsr2.2016.04.002 fatcat:lco5befwcvfmhnd6fqu3pqydla

The Copernicus Surface Velocity Platform drifter with Barometer and Reference Sensor for Temperature (SVP-BRST): Genesis, design, and initial results

Paul Poli, Marc Lucas, Anne O'Carroll, Marc Le Menn, Arnaud David, Gary K. Corlett, Pierre Blouch, David Meldrum, Christopher J. Merchant, Mathieu Belbeoch, Kai Herklotz
2018 Ocean Science Discussions  
Based on lessons learnt from these initial buoys, a new-generation drifter was designed to serve calibration of SST retrievals by European Union's Copernicus satellites.  ...  This affects the drifter SST data representativeness, which is an aspect of importance for optimal use of these data.</p>  ...  by NKE, calibration by SHOM, coordination of deployments by Meteo France, provision of a tethered reference measurement by BSH, and metadata processing and deployment monitoring visualization tools by  ... 
doi:10.5194/os-2018-109 fatcat:nn2tq2eb4jbt5oyjfzbi65mcie
« Previous Showing results 1 — 15 out of 726 results