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Spatio-temporal variation in sea state parameters along virtual ship route paths J. Oper. Oceanogr. (IF 4.04) Pub Date : 2021-01-15 Ulrik D. Nielsen
ABSTRACT The article presents a study investigating the level of variation in sea state parameters encountered by sailing ships crossing the oceans. The sea state parameters have been obtained from a reanalysis, in this case the ERA5. The study is based on the use of different interpolation schemes to compute parameters in geographical positions off the fixed grid. It is shown that the variation in
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The Stokes drift in ocean surface drift prediction J. Oper. Oceanogr. (IF 4.04) Pub Date : 2021-01-15 T. Tamtare; D. Dumont; C. Chavanne
ABSTRACT The importance of explicitly resolving the Stokes drift in ocean surface drift modelling is demonstrated by comparing four models with 58,612 observational data points obtained from undrogued drifting buoys in the Estuary and Gulf of St. Lawrence, Canada. Drift model inputs are obtained from regional atmosphere and ocean circulation, and spectral wave models. The control drift model considers
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Development of small vessel advisory and forecast services system for safe navigation and operations at sea J. Oper. Oceanogr. (IF 4.04) Pub Date : 2020-11-13 N. D. Aditya; K. G. Sandhya; R. Harikumar; T. M. Balakrishnan Nair
ABSTRACT Fishing is the most dangerous profession in the world. To reduce the number of accidents caused by capsizing of vessels, Indian National Centre for Ocean Information Services (INCOIS) has designed and developed an advisory and forecast services system for the Indian ocean regime, which warns users against potential zones and times at which vessel overturning can take place, three days in advance
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A numerical study on seasonal transport variability of the North Indian Ocean boundary currents using Regional Ocean Modeling System (ROMS) J. Oper. Oceanogr. (IF 4.04) Pub Date : 2020-11-10 Radharani Sen; Suchita Pandey; Sumit Dandapat; P. A. Francis; Arun Chakraborty
ABSTRACT This study investigates the seasonal transport variability of the North Indian Ocean (NIO) boundary currents, in particular, the East India Coastal Current (EICC) in the Bay of Bengal (BoB), West India Coastal Current (WICC) in the Arabian Sea (AS) and Somali Current (SC) in the Equatorial Indian Ocean (EIO) using a high-resolution Regional Ocean Modeling System (ROMS) with climatological
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Assessment of an ocean-ecosystem model in simulating the Indian coastal marine ecosystem dynamics J. Oper. Oceanogr. (IF 4.04) Pub Date : 2020-11-09 Kunal Chakraborty; Aneesh A. Lotliker; G.V.M. Gupta; Vishnu Narayanan Nampoothiri S.; Arya Paul; Jayashree Ghosh; Trishneeta Bhattacharya; Sanjiba Kumar Baliarsingh; Alakes Samanta
ABSTRACT This study describes an assessment of an ocean-ecosystem model in simulating marine ecosystem dynamics in the Indian coastal waters. Long-term sustained in-situ observations of temperature, salinity, chlorophyll-a and dissolved oxygen (DO) collected in the coastal waters of India, and ship-based observations are used for this assessment. The model captures observed trend of temperature, salinity
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Assessment of Coringa Mangrove shoreline migration using geospatial techniques J. Oper. Oceanogr. (IF 4.04) Pub Date : 2020-11-06 Garima Sharma; K.V.K.R.K. Patnaik
ABSTRACT Coringa Mangroves in the Kakinada Bay have evolved as the second-largest mangroves in the East Coast of India over the last century. The Coringa Mangrove shoreline has accreted considerably in the past decades as observed from the satellite imageries, adding value to the natural biodiversity of flora and fauna. This study is focused on quantifying the long term changes of Coringa mangrove
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Copernicus Marine Service Ocean State Report, Issue 4 J. Oper. Oceanogr. (IF 4.04) Pub Date : 2020-09-29 Karina von Schuckmann; Pierre-Yves Le Traon; Neville Smith (Chair); Ananda Pascual; Samuel Djavidnia; Jean-Pierre Gattuso; Marilaure Grégoire; Glenn Nolan; Signe Aaboe; Enrique Álvarez Fanjul; Lotfi Aouf; Roland Aznar; T. H. Badewien; Arno Behrens; Maristella Berta; Laurent Bertino; Jeremy Blackford; Giorgio Bolzon; Federica Borile; Marine Bretagnon; Robert J.W. Brewin; Donata Canu; Paola Cessi; Stefano
(2020). Copernicus Marine Service Ocean State Report, Issue 4. Journal of Operational Oceanography: Vol. 13, Copernicus Marine Service Ocean State Report, Issue 4, pp. S1-S172.
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A study on the physical and biogeochemical responses of the Bay of Bengal due to cyclone Madi J. Oper. Oceanogr. (IF 4.04) Pub Date : 2020-09-10 Riyanka Roy Chowdhury; S. Prasanna Kumar; Arun Chakraborty
Madi was a category-2 cyclonic storm formed over the south-western Bay of Bengal (BoB) in December 2013. It formed on 6th December as a depression, and by 8th December it became a very severe cyclonic storm. Some unique features of Madi were: (a) an unexpected reduction in the intensity during its north-westward movement, (b) sudden change in track by almost 180o in a south-westerly direction, and
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On the upper ocean response of Bay of Bengal to very severe cyclones Phailin and Hudhud J. Oper. Oceanogr. (IF 4.04) Pub Date : 2020-09-07 Anju Issac Elizabeth; John B. Effy; P. A. Francis
The upper ocean response of Bay of Bengal to two extremely severe post-monsoon tropical cyclones, Phailin and Hudhud, which occurred in the same time of the season (4–12 October 2013 and 6–12 October 2014 respectively) with very similar tracks and life cycles are presented in this study. It is observed that, even though the tropical cyclone Phailin was much stronger than tropical cyclone Hudhud, the
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Observation impact statement on satellite sea surface salinity data from two operational global ocean forecasting systems J. Oper. Oceanogr. (IF 4.04) Pub Date : 2020-08-10 M. J. Martin; E. Remy; B. Tranchant; R. R. King; E. Greiner; C. Donlon
Observing system experiments have been carried out with two operational ocean data assimilation systems to assess the impact of assimilating satellite sea surface salinity (SSS) data. The SSS data reduces the errors in tropical Pacific salinity by 4% and 8% in the Met Office and Mercator Ocean systems respectively with an impact down to about 50 m depth on average. Salinity errors were reduced by up
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Evaluating pressure gauges as a potential future replacement for electromagnetic cable observations of the Florida Current transport at 27°N J. Oper. Oceanogr. (IF 4.04) Pub Date : 2020-06-16 Christopher S. Meinen; Ryan H. Smith; Rigoberto F. Garcia
For 30+ years, submarine cable voltage measurements have been a critical measurement system used to produce a highly valuable time series of daily Florida Current volume transport at 27°N in the Florida Straits. However, the high cost associated with replacing the measurement system, should the existing telecommunications cable break, represents a significant vulnerability to the continuation of this
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Indian Ocean wave forecasting system for wind waves: development and its validation J. Oper. Oceanogr. (IF 4.04) Pub Date : 2020-06-02 P. G. Remya; T. Rabi Ranjan; P. Sirisha; R. Harikumar; T. M. Balakrishnan Nair
Present study aims at the development of the Indian Ocean wave forecasting system for wind waves using WAVEWATCH-III wave model and a detailed validation of the same to ensure the model reliability for operational use. WAVEWATCH-III model has a multi-grid approach with resolution varying from 100 km (global grid) to 4 km (coastal grid), and is driven by the 10 m wind, produced by the ECMWF meteorological
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Bluelink ocean forecasting Australia: 15 years of operational ocean service delivery with societal, economic and environmental benefits J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-11-07 Andreas Schiller; Gary B. Brassington; Peter Oke; Madeleine Cahill; Prasanth Divakaran; Mikhail Entel; Justin Freeman; David Griffin; Mike Herzfeld; Ron Hoeke; Xinmei Huang; Emlyn Jones; Edward King; Barbra Parker; Tracey Pitman; Uwe Rosebrock; Jessica Sweeney; Andy Taylor; Marcus Thatcher; Robert Woodham; Aihong Zhong
The operational Australian Bluelink ocean forecast system is used to transform physical oceanographic observations into coherent analyses and predictions. These analyses and predictions form the basis for information services about the marine environment and its ecosystem, and can provide boundary data for weather predictions. Bluelink information services are available to marine industries (e.g. commercial
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Scientific rationale and conceptual design of a process-oriented shelfbreak observatory: the OOI Pioneer Array J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-10-23 Glen Gawarkiewicz; Albert J. Plueddemann
ABSTRACT The Ocean Observatories Initiative (OOI) of the National Science Foundation in the USA includes a coastal observatory called the OOI Pioneer Array, which is focused on understanding shelf/slope exchange processes. The OOI Pioneer Array has been designed and constructed and is currently in operation. In order to fully understand the design principles and constraints, we first describe the basic
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Coastal ocean forecasting in Spanish ports: the SAMOA operational service J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-05-21 Marcos G. Sotillo; P. Cerralbo; P. Lorente; M. Grifoll; M. Espino; A. Sanchez-Arcilla; E. Álvarez-Fanjul
SAMOA (Sistema de Apoyo Meteorológico y Oceanográfico de la Autoridad Portuaria) is the latest initiative of Puertos del Estado, the Spanish Public State Port Agency, to enhance the delivery of user-customised operational met-ocean information to aid Spanish Port Authorities making harbour safety, environmental management and operational decisions. This initiative provides high-resolution coastal operational
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WAM, SWAN and WAVEWATCH III in the Finnish archipelago – the effect of spectral performance on bulk wave parameters J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-06-29 J.-V. Björkqvist; O. Vähä-Piikkiö; V. Alari; A. Kuznetsova; L. Tuomi
WAM, SWAN and WAVEWATCH III® were implemented to the Finnish archipelago with a 0.1 nmi grid. A comparison with coastal wave buoy observations showed that the models agreed on the significant wave height, with biases and root-mean-square-errors (RMSE) differing at most 0.06 m. In a general sense, WAM propagated most long wave energy into the archipelago, while SWAN generated the highest local waves
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Development of a feature-oriented regional modelling system for the North Brazil Undercurrent region (1°–11°S) and its application to a process study on the genesis of the Potiguar Eddy J. Oper. Oceanogr. (IF 4.04) Pub Date : 2020-03-23 Ana Paula Morais Krelling; Avijit Gangopadhyay; Ilson da Silveira; Felipe Vilela-Silva
Key elements of a Feature-oriented regional modelling system (FORMS) in the Western Equatorial Atlantic (1°–11°S) are developed for possible application in an operational forecast system as well as in process-oriented studies. This equatorial margin region is dominated by the northwestward flowing near surface North Brazil Undercurrent (NBUC) and the southeastward Deep Western Boundary Current (DWBC)
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Evaluating wind datasets for wave hindcasting in the NW Iberian Peninsula coast J. Oper. Oceanogr. (IF 4.04) Pub Date : 2020-03-14 M. Viitak; P. Avilez-Valente; A. Bio; L. Bastos; I. Iglesias
The available wind datasets can be exploited to support the setup of accurate wave models, able to reproduce and forecast extreme event scenarios. It is of utmost importance in the actual context of climate change. This study focuses on evaluating the performance of a numerical wave model, using different wind datasets, helping to create a tool to assess coastal risks, and further on to support the
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Freshening of seawater in the Mahim Bay, Mumbai, India: Insight from an environmental isotope study J. Oper. Oceanogr. (IF 4.04) Pub Date : 2020-03-11 Jacob Noble; Tirumalesh Keesari
An environmental isotope study was conducted to assess the cause for the freshening of seawater observed in the Mahim Bay, Mumbai, India after a storm event during the southwest monsoon period. Water samples were collected from the various locations of the coastal water and the suspected inland water sources such as rain, river and groundwater and analysed for major ion species and stable isotopes
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Measurement of the North Equatorial Current/Undercurrent by a subsurface mooring at 160°E J. Oper. Oceanogr. (IF 4.04) Pub Date : 2020-03-09 Jiahao Wang; Xi Chen; Kefeng Mao
Based on the subsurface mooring observations at 159°59′E, 14°40′N from July 2014 to May 2016, the vertical structure and variability of the North Equatorial Current/Undercurrent (NEC/NEUC) are investigated. The NEC flows westward stably from the sea surface down to 500 m and is strongest with the magnitude of approximately 40 cm/s in January 2016, while in several months, the eastward current occurs
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Evaluation of extreme storm waves in the Black Sea J. Oper. Oceanogr. (IF 4.04) Pub Date : 2020-03-09 M. Bernardino; L. Rusu; C. Guedes Soares
The objective of the present study is to give a contribution to the extreme wave climate assessment in the Black Sea, as studies of extreme storm waves are of great interest for coastal protection and maritime traffic. High resolution wind wave data sets are used to investigate trends and variability of the characteristics of extreme storm waves. Two different methodologies (Eulerian and Lagrangean)
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Extreme environmental forcing on the container ship SS El Faro J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-11-08 Ray Bell; Ben Kirtman
ABSTRACT The sinking of the cargo ship SS El Faro is investigated by providing a comprehensive analysis of the wind, wave and ocean currents associated with Hurricane Joaquin. Using state-of-the-art reanalyses the event is assessed in high resolution and from a long-term climate perspective. The last known location of the SS El Faro was in the north-west eye-wall of Hurricane Joaquin when it was a
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Biophysical responses to tropical cyclone Hudhud over the Bay of Bengal J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-11-04 K. Maneesha; D. Hari Prasad; K. V. K. R. K. Patnaik
Cyclone Hudhud originated in the Andaman Sea on 6 October 2014. Later, it intensified into a cyclonic storm on 8 October and eventually made landfall at Visakhapatnam on 12 October as a very severe cyclonic storm. It was intensified off of Visakhapatnam by high stratified waters with a thick barrier layer that held significant heat content. In this study, we analysed the data along the cyclone track
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The application of least-square collocation and variance component estimation in crossover analysis of satellite altimetry observations and altimeter calibration J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-10-29 Mahmoud Pirooznia; Mehdi Raoofian Naeeni
In this study, the collocation method accompanied with variance component estimation is used for least square adjustment of crossover observations in order to determine the effects of radial errors on the observations of satellite altimetry. The collocation is used for time series analysis of sea surface height observations both for predicting the possible missing observations in each cycle, and for
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Copernicus Marine Service Ocean State Report, Issue 3 J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-09-13 Karina von Schuckmann, Pierre-Yves Le Traon, Neville Smith (Chair), Ananda Pascual, Samuel Djavidnia, Jean-Pierre Gattuso, Marilaure Grégoire, Glenn Nolan, Signe Aaboe, Eva Aguiar, Enrique Álvarez Fanjul, Aida Alvera-Azcárate, Lotfi Aouf, Rosa Barciela, Arno Behrens, Maria Belmonte Rivas, Sana Ben Ismail, Abderrahim Bentamy, Mireno Borgini, Vittorio E. Brando, Nathaniel Bensoussan, Anouk Blauw, Philippe
(2019). Copernicus Marine Service Ocean State Report, Issue 3. Journal of Operational Oceanography: Vol. 12, Copernicus Marine Service Ocean State Report, Issue 3, pp. S1-S123.
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Extrapolating Eulerian ocean currents for improving surface drift forecasts J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-09-06 T. Tamtare; D. Dumont; C. Chavanne
ABSTRACT Predictions of drift trajectories based on four drift models were compared with observations from drifting buoys deployed in 2014 and 2015 in the Estuary and Gulf of St. Lawrence to show the impact of the current vertical shear on the surface drift predictions. Input of ocean currents and winds are obtained from ISMER's 5 km resolution ocean circulation model and from the Canadian Regional
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Tracking fishing ground parameters in cloudy region using ocean colour and satellite-derived surface flow estimates: A study in the Bay of Bengal J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-09-03 M. Jishad; Ranjit Kumar Sarangi; Smitha Ratheesh; Syed Moosa Ali; Rashmi Sharma
ABSTRACT A new conceptual framework, based on ocean bio-physical observations from different satellites, has been proposed to track fishing ground parameters to identify Potential Fishing Zones (PFZ) in the Bay of Bengal (BoB). The proposed technique also attempts to provide a short-term forecast based on feature propagation, even under cloudy conditions. The current study has been carried out to understand
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An assessment of the impact of oceanic initial conditions on the interaction of upper ocean with the tropical cyclones in the Arabian Sea J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-08-28 Tanuja Nigam; Kumar Ravi Prakash; Vimlesh Pant
The Regional Ocean Modelling System (ROMS) is utilised to estimate the cyclone-induced mixing and cooling associated with two tropical cyclones, namely Phet and Nilofar over the Arabian Sea (AS). Numerical experiments were carried out with realistic and idealistic oceanic conditions to assess the impact of oceanic initial condition and stratification on the interaction of upper ocean with the tropical
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eReefs: An operational information system for managing the Great Barrier Reef J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-08-08 Andrew D. L. Steven, Mark E. Baird, Richard Brinkman, Nicholas J. Car, Simon J. Cox, Mike Herzfeld, Jonathan Hodge, Emlyn Jones, Edward King, Nugzar Margvelashvili, Cedric Robillot, Barbara Robson, Thomas Schroeder, Jenny Skerratt, Sharon Tickell, Narendra Tuteja, Karen Wild-Allen, Jonathan Yu
eReefs is a comprehensive interoperable information platform that has been developed for the Great Barrier Reef (GBR) region to provide users with access to improved environmental intelligence allowing them to assess past, present, and future conditions, as well as management options to mitigate the risks associated with multiple and sometimes competing uses of the GBR. eReefs is built upon an integrated
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Developing community marine data service for Blue Growth sectors J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-08-08 Jun She, Jens Murawski
Using Offshore Wind Farm (OWF) siting in the Baltic Sea as a demonstration case, key issues on developing community data services (CDS) for Blue Growth sectors are explored: e.g. data and product requirements, level of fitness-for-the-purpose and data gaps on the marine CDS for OWF. Through analysing the Blue Growth and marine service value chain as well as user requirements, a list of value-added
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An introduction to the ‘Oceans and Society: Blue Planet’ initiative J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-07-17 Emily A. Smail, Paul M. DiGiacomo, Sophie Seeyave, Samy Djavidnia, Louis Celliers, Pierre-Yves Le Traon, Jeremy Gault, Elva Escobar-Briones, Hans-Peter Plag, Christine Pequignet, Lenore Bajona, Li Zhang, Jay Pearlman, Andy Steven, Jonathan Hodge, Marie-Fanny Racault, Curt Storlazzi, William Skirving, Ron Hoeke, John Marra, Ap van Dongeren, Frank Muller-Karger, Douglas Cripe, Daniel Takaki
We live on a blue planet, and Earth’s waters benefit many sectors of society. The future of our blue planet is increasingly reliant on the services delivered by marine, coastal and inland waters and on the advancement of effective, evidence-based decisions on sustainable development. ‘Oceans and Society: Blue Planet’ is an initiative of the Group on Earth Observations (GEO) that aims to ensure the
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SIMA Austral: An operational information system for managing the Chilean aquaculture industry with international application J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-07-15 Andrew D. L. Steven, Santosh Aryal, Patricio Bernal, Francisco Bravo, Rodrigo H. Bustamante, Scott Condie, Jeffrey M. Dambacher, Sven Dowideit, Elizabeth A. Fulton, Rebecca Gorton, Mike Herzfeld, Jonathan Hodge, Eriko Hoshino, Erin Kenna, Diego Ocampo, C. Ingrid van Putten, Farhan Rizwi, Jennifer Skerratt, Amara Steven, Linda Thomas, Sharon Tickell, Paula Vaquero, Dan Wild, Karen Wild-Allen
The Integrated Management System for the Aquaculture (SIMA in Spanish) is a comprehensive interoperable information and modelling platform that has been developed to provide the Chilean Aquaculture industry and government agencies with access to improved environmental intelligence allowing them to make better informed strategic and operational decisions. SIMA is built upon an integrated system of biophysical
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A study on causes and recurrence of the Mid-Mediterranean Jet from 2003 to 2015 using satellite thermal and altimetry data and CTD casts J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-06-25 Achille Ciappa
ABSTRACT The existence of the Mid-Mediterranean Jet (MMJ) as part of the pathway of the Atlantic Water (AW) in Eastern Mediterranean is still debated and the reasons for its formation are unknown. The MMJ was investigated over the 2000–2015 summers using thermal and altimetry satellite data and ‘in situ’ casts. In the Levantine basin, the AW flowing along the Libyan-Egyptian coast splits into an along-shore
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Underwater noise levels in Indian waters off the coast of Mormugao Port J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-06-25 G. V. V. Pavan Kumar; V. V. S. Prasad; U. S. Ramesh
ABSTRACT Among various factors influencing the ocean noise levels, shipping traffic radiated underwater noise levels were identified as the major contributors. The increase in ambient noise levels due to natural and anthropogenic sources threatens the marine species communication. India has a coastline of 7,516.6 Km with 12 major and ∼187 minor ports. The hydrophone system measured for 39 days helped
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Forecasting the severity of the Newfoundland iceberg season using a control systems model J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-06-20 Grant R. Bigg; Yifan Zhao; Edward Hanna
ABSTRACT The iceberg hazard for the Grand Banks area to the east of Newfoundland varies dramatically from one year to the next. In some years no icebergs penetrate south of 48°N, while in others well over 1000 icebergs enter the main shipping lanes between Europe and NE North America. Advance knowledge of this seasonal hazard would have major implications for ship routing, as well as the resources
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Transport of floating marine litter in the coastal area of the south-eastern Bay of Biscay: A Lagrangian approach using modelling and observations J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-05-02 Amandine Declerck, M. Delpey, A. Rubio, L. Ferrer, O. C. Basurko, J. Mader, M. Louzao
Marine litter is identified as the major ocean pollution today, with a significant impact on the environment. The transport of litter by ocean circulation is still poorly understood, and the management of marine litter remains a major challenge for local authorities. This work investigates the transport of floating marine litter (FML) in the coastal area of the south-eastern Bay of Biscay. It provides
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Oil spill trajectory prediction with high-resolution ocean currents J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-05-01 S. J. Prasad; P. A. Francis; T. M. Balakrishnan Nair; S. S. C. Shenoi; T. Vijayalakshmi
Simulated ocean currents from ocean circulation models along with the surface winds are generally used to force an oil spill trajectory model. Ocean circulation is a key factor in determining the drift of the spilled marine pollutants. The simulations of the drift pattern of spilled oil, when forced by the ocean currents from two ocean models, are presented here. Merchant Vessel (MV) Rak sunk at 72
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Assessing the extended-range predictability of the ocean model HYCOM with the REMO ocean data assimilation system (RODAS) in the South Atlantic J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-04-23 J. P. S. Carvalho; F. B. Costa; D. Mignac; C. A. S. Tanajura
ABSTRACT The Brazilian Oceanographic Modeling and Observation Network (REMO, acronym for ‘Rede de Modelagem e Observação Oceanográfica’ in Portuguese) has developed the REMO Ocean Data Assimilation System (RODAS). It is based on an Ensemble Optimal Interpolation scheme applied into the Hybrid Coordinate Ocean Model (HYCOM). This study aims to investigate the extended-range predictability of the HYCOM + RODAS
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Integrated observing systems: An approach to studying harmful algal blooms in south Florida J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-04-16 Adam M. Schaefer, M. Dennis Hanisak, Malcolm McFarland, James M. Sullivan
The Indian River Lagoon (IRL) is a large and complex barrier island estuary on Florida’s East coast. The system is also one of the nation’s most biologically diverse, a major spawning and nursery ground for numerous species of fish and shellfish, and home to significant populations of dolphins and manatees. Ocean observing systems can play an integral role in evaluating the effects of both natural
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Strategies for simulating the drift of marine debris J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-04-09 Jonathan V. Durgadoo; Arne Biastoch; Adrian L. New; Siren Rühs; Aylmer J.G. Nurser; Yann Drillet; Jean-Raymond Bidlot
ABSTRACT Modelling the drift of marine debris in quasi-real time can be of societal relevance. One pertinent example is Malaysia Airlines flight MH370. The aircraft is assumed to have crashed in the Indian Ocean, leaving floating wreckage to drift on the surface. Some of these items were recovered around the western Indian Ocean. We use ocean currents simulated by an operational ocean model in conjunction
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Assessment of the impact of spatial resolution on ROMS simulated upper-ocean biogeochemistry of the Arabian Sea from an operational perspective J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-03-16 Kunal Chakraborty, Nimit Kumar, M. S. Girishkumar, G. V. M. Gupta, Jayashree Ghosh, T. V. S. Udaya Bhaskar, V. P. Thangaprakash
The resolution of the model emerges to be an important factor in simulating the real oceanic features. In this paper, the performance of two coupled bio-physical models, having spatial resolutions 1/12° (∼9 km) and 1/4° (∼25 km) configured using Regional Ocean Modeling System (ROMS), have been evaluated in simulating upper ocean dynamics of the Arabian Sea. A comparison of the model simulated physical
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SOCIB integrated multi-platform ocean observing and forecasting: from ocean data to sector-focused delivery of products and services J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-03-06 Emma Heslop, Joaquín Tintoré, Paz Rotllan, Diego Álvarez-Berastegui, Biel Fontera, Baptiste Mourre, Lluís Gómez-Pujol, David March, Benjamin Casas, Glenn Nolan, Dominique Durand
In the last 10 years, new monitoring and modelling technologies have emerged allowing real-time observation and forecasting of the coastal ocean at regional and local scales. These technologies are at the core of multi-platform integrated observing and forecasting systems, such as the Balearic Islands Coastal Ocean Observing and Forecasting System (SOCIB). New capabilities to characterise the state
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Modelling of marine ecosystem in regional scale for short term prediction of satellite-aided operational fishery advisories J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-02-11 Kunal Chakraborty, Sourav Maity, Aneesh A. Lotliker, Alakes Samanta, Jayashree Ghosh, Nagaraja Kumar Masuluri, Naga Swetha, Rose P. Bright
The operational Potential Fishing Zone (PFZ) advisory generated and disseminated by the ESSO-Indian National Centre for Ocean Information Services has a significant impact on the livelihood of coastal community of India. PFZs are identified as the relatively narrow zones in the ocean where horizontal gradients of physical and/or biological properties are enhanced. The advisories are provided to fishermen
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Cross-scale operational oceanography in the Adriatic Sea J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-02-08 Christian Ferrarin, Silvio Davolio, Debora Bellafiore, Michol Ghezzo, Francesco Maicu, William Mc Kiver, Oxana Drofa, Georg Umgiesser, Marco Bajo, Francesca De Pascalis, Piero Malguzzi, Luca Zaggia, Giuliano Lorenzetti, Giorgia Manfè
The oceanographic forecast capability in coastal seas is often limited by the capacity of the numerical models in correctly reproducing the complex morphology of the coastline and the exchange processes between the shelf and the open seas. In the marginal Adriatic Sea this task is of uppermost importance due to the presence of several coastal water bodies and rivers. We present here a new operational
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Operational system for automatic coastal upwelling detection in the Baltic Sea based on the 3D CEMBS model J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-01-28 Artur Nowicki, Maciej Janecki, Lidia Dzierzbicka-Głowacka
The upwelling in the Baltic Sea region is very common phenomenon. According to different studies, in some places it can exist almost one-third of the year leading to vertical mixing and transporting fresh, rich in nutrients water from deeper layers to the surface. The upwelling phenomenon has been analysed for years 2010–2016, during thermally stratified period, i.e. between May and September. Surface
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Suitability of the Southern Australia Integrated Marine Observing System’s (SA-IMOS) HF-Radar for operational forecasting J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-01-24 Charles James, Matt Collopy, Lucy R. Wyatt, Andrew Middleditch
The IMOS HF-Radar array in South Australia provides observations of the ocean waters south of Spencer Gulf. In addition to ocean surface currents, the data from this array can be processed to provide near real-time observations of wave statistics and wind direction. The Australian Bureau of Meteorology requires access to these observations for forecast modelling but currently only have a single Waverider
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A year-long assessment of wave measurements retrieved from an HF radar network in the Gulf of Naples (Tyrrhenian Sea, Western Mediterranean Sea) J. Oper. Oceanogr. (IF 4.04) Pub Date : 2019-01-11 Simona Saviano, Alkiviadis Kalampokis, Enrico Zambianchi, Marco Uttieri
A three-site short-range (25 MHz) CODAR SeaSonde High-Frequency (HF) radar system has been operating in the Gulf of Naples (Tyrrhenian Sea) since 2004. HF radars use first-order echoes to determine surface currents, while second-order ones can be exploited to estimate the main parameters characterising the wave field: significant wave height, direction and period. Waves were studied in the Gulf of
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Interpolated fields of satellite-derived multi-algorithm chlorophyll-a estimates at global and European scales in the frame of the European Copernicus-Marine Environment Monitoring Service J. Oper. Oceanogr. (IF 4.04) Pub Date : 2018-12-09 Bertrand Saulquin, Francis Gohin, Odile Fanton d’Andon
The new level-4 daily chlorophyll-a interpolated products described in this paper and freely available in the Copernicus-Marine Environment Service, aim at providing daily continuous fields (cloud-free) of satellite-derived chlorophyll-a surface concentration at two different resolutions: 4*4 km over the world and 1*1 km resolution over Europe. The multi-sensor daily analyses, by filling the cloudy
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Improved ocean analysis for the Indian Ocean J. Oper. Oceanogr. (IF 4.04) Pub Date : 2018-11-30 Hasibur Rahaman, T. Venugopal, Stephen G. Penny, David W. Behringer, M. Ravichandran, J. V. S. Raju, U. Srinivasu, Debasis Sengupta
The National Centers for Environmental Prediction (NCEP) and the Indian National Centre for Ocean Information Services (INCOIS) produce global ocean analyses based on the Global Ocean Data Assimilation System (GODAS). This system uses a state of the art ocean general circulation model named moduler ocean model (MOM) and the 3D-Variational (3DVar) data assimilation technique. In this study we have evaluated
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The Ocean Enterprise – understanding and quantifying business activity in support of observing, measuring and forecasting the ocean J. Oper. Oceanogr. (IF 4.04) Pub Date : 2018-11-21 Ralph Rayner, Carl Gouldman, Zdenka Willis
Sustained ocean observations, measurements and models provide a wide range of societal benefits underpinning the safety, operational and compliance needs of beneficiaries that operate around, on and under the ocean (In the context of this paper, the term ‘ocean’ is defined as encompassing the global ocean, enclosed seas and the US Great Lakes.) They also provide an essential input to ocean scientific
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NOAA’s Physical Oceanographic Real-Time System (PORTS®) J. Oper. Oceanogr. (IF 4.04) Pub Date : 2018-11-17 Richard F. Edwing
The National Oceanic and Atmospheric Administration’s (NOAA) Physical Oceanographic Real-Time System (PORTS®) is an integrated system of sensors concentrated in seaports that provide accurate and reliable real-time information about environmental conditions. PORTS measures and disseminates observations for water levels, currents, waves, bridge air gap, water temperature, salinity, and meteorological
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Applications of ocean currents data from high-frequency radars and current profilers to search and rescue missions around Taiwan J. Oper. Oceanogr. (IF 4.04) Pub Date : 2018-11-15 Yung-Ting Shen, Jian-Wu Lai, Li-Guang Leu, Yi-Chieh Lu, Jau-Ming Chen, Huan-Jie Shao, Hsien-Wen Chen, Kuo-Tung Chang, Chuen-Teyr Terng, Yu-Chia Chang, Ruo-Shan Tseng
To enhance the immediacy and accuracy of search and rescue missions conducted by Taiwan Coast Guard Administration (TCGA), this study examines the characteristics of ocean currents and estimates the drifting trajectory of objects for two cases of marine incidents. Two methods are used to predict object’s drift tracks: the first one is simply calculating the advection driven by currents and the second
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Applying area-locked, shallow water Argo floats in Baltic Sea monitoring J. Oper. Oceanogr. (IF 4.04) Pub Date : 2018-11-14 Simo Siiriä, Petra Roiha, Laura Tuomi, Tero Purokoski, Noora Haavisto, Pekka Alenius
Argo floats have been successfully used for more than 10 years in the world's ocean. The Finnish Meteorological Institute began to develop practices to use Argo floats in the shallow brackish water Baltic Sea in 2011. Since 2012, Argo floats have been in continuous use in the Baltic Sea and are now a part of the Euro–Argo European Research Infrastructure Consortium (ERIC). The floats are kept in the
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NOAA’s national water level observation network (NWLON) J. Oper. Oceanogr. (IF 4.04) Pub Date : 2018-11-05 Ashley Miller, Audra Luscher
The National Oceanographic and Atmospheric Administration National Water Level Observation Network (NWLON) is the foundation of a comprehensive system for observing, communicating, and assessing the impact of changing water levels nationwide. The network also measures other oceanographic parameters in addition to water levels, including meteorological parameters. Although initially established to support
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A low-cost long-term model of coastal observatories of global change J. Oper. Oceanogr. (IF 4.04) Pub Date : 2018-10-29 Joan-Albert Sanchez-Cabeza, León Felipe Álvarez Sánchez, José Gilberto Cardoso-Mohedano, Edgar Escalante Mancera, Misael Díaz-Asencio, Hugo López-Rosas, Maria Luisa Machain-Castillo, Martín Merino-Ibarra, Ana Carolina Ruiz-Fernández, Rosalba Alonso-Rodríguez, Mario Alejandro Gómez-Ponce, Enrique Ávila, Serguei Rico-Esenaro, Miguel Ángel Gómez-Reali, Carlos Alberto Herrera-Becerril, Michel Grutter
The identification and quantification of global change, including climate change, requires long time series of key variables. In this work, the fundamentals and operation of low-cost long-term coastal observatories are described, and preliminary data are shown. The vision is to offer a scientific platform of physicochemical data for at least the next 100 years, what requires establishing sustainable
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A new 30 meter resolution global shoreline vector and associated global islands database for the development of standardized ecological coastal units J. Oper. Oceanogr. (IF 4.04) Pub Date : 2018-10-17 Roger Sayre, Suzanne Noble, Sharon Hamann, Rebecca Smith, Dawn Wright, Sean Breyer, Kevin Butler, Keith Van Graafeiland, Charlie Frye, Deniz Karagulle, Dabney Hopkins, Drew Stephens, Kevin Kelly, Zeenatul Basher, Devon Burton, Jill Cress, Karina Atkins, D. Paco Van Sistine, Beverly Friesen, Rebecca Allee, Tom Allen, Peter Aniello, Irawan Asaad, Mark John Costello, Kathy Goodin, Peter Harris, Maria
A new 30-m spatial resolution global shoreline vector (GSV) was developed from annual composites of 2014 Landsat satellite imagery. The semi-automated classification of the imagery was accomplished by manual selection of training points representing water and non-water classes along the entire global coastline. Polygon topology was applied to the GSV, resulting in a new characterisation of the number
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Numerical modelling of tsunami in the Makran Subduction Zone – A case study on the 1945 event J. Oper. Oceanogr. (IF 4.04) Pub Date : 2018-10-01 M. A. Sarker
Tsunamis cause significant loss of life and damage to properties, ecosystems and marine structures and facilities. Tsunami modelling results are used for deriving robust design conditions for coastal and marine structures and facilities. The results are also used for emergency planning and decision-making to estimate the potential loss of life, damage to properties and marine facilities and to develop
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Challenges for global ocean observation: the need for increased human capacity J. Oper. Oceanogr. (IF 4.04) Pub Date : 2018-09-27 Patricia Miloslavich, Sophie Seeyave, Frank Muller-Karger, Nicholas Bax, Elham Ali, Claudia Delgado, Hayley Evers-King, Benjamin Loveday, Vivian Lutz, Jan Newton, Glenn Nolan, Ana C. Peralta Brichtova, Christine Traeger-Chatterjee, Edward Urban
Sustained global ocean observations are needed to recognise, understand, and manage changes in marine biodiversity, resources and habitats, and to implement wise conservation and sustainable development strategies. To meet this need, the Global Ocean Observing System (GOOS), a network of observing systems distributed around the world and coordinated by the Intergovernmental Oceanographic Commission
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X-band radar as a tool for monitoring natural coastal behaviour and potential development impacts J. Oper. Oceanogr. (IF 4.04) Pub Date : 2018-09-27 Steven Wallbridge, Tony Dolphin, Colin J. L. Taylor
This paper reports ongoing exploration of X-band radar as an operational monitoring tool for coastal infrastructure development. Data have been continually gathered since 2013, helping a major energy developer (EDF Energy) better understand shoreline processes at a proposed new nuclear power station at Sizewell, UK, to inform considerations of engineering design. The continual coverage provided by
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Mapping of currents off the northwestern Iberian coast with the Regional Ocean Modelling System J. Oper. Oceanogr. (IF 4.04) Pub Date : 2018-09-19 T. C. Costa; L. T. Pereira; M. Marta-Almeida; C. Guedes Soares
The structure and the temporal variability of modelled velocity fields at different depths are studied for the years 2002–2004 in the Northwestern Iberian Margin. The currents are simulated with the Regional Ocean Modeling System in a high resolution that is compatible with the input data from the HYbrid Coordinate Ocean Model reanalysis and the atmospheric forcing from the Climate Forecast System
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