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Evaluation of carbon dioxide emission based on energy efficiency existing ship index during oceanographic navigation J. Oper. Oceanogr. (IF 3.1) Pub Date : 2023-09-11 Fu-Ming Tzu, Dong-Taur Su
ABSTRACT This paper evaluates the energy-saving potential of ships by analyzing their carbon dioxide emissions on 20 oceanic voyages using weather routing. The Energy Efficiency Existing Ship Index (EEXI) is used to measure a ship's energy efficiency. The voyages include routes connecting major international seaports and hubs in Asia and North America. Practical measurements were taken on board the
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Calibration and validation of high frequency coastal radar waves exploiting in-situ observations and modelled data in the south-west Sicily J. Oper. Oceanogr. (IF 3.1) Pub Date : 2023-05-23 L. Ursella, S. Aronica, V. Cardin, G. Ciraolo, D. Deponte, C. Lo Re, A. Orasi, F. Capodici
ABSTRACT This paper describes a calibration procedure for a non-optimally configured High Frequency Radar (HFR) for the period 1 April 2021, to 31 March 2022, to assess sea waves characteristics. The HFR system, a 16.5 MHz WEllen RAdar (WERA), is part of an innovative network for monitoring the state of the sea. The system is installed in the western part of Sicily (Italy) where a wave buoy is positioned
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Spatio-temporal variations in upwelling indices in Arabian Sea coastal upwelling systems and associated biological productivity using remote sensing observations J. Oper. Oceanogr. (IF 3.1) Pub Date : 2023-03-15 Debojyoti Ganguly, K. Suryanarayana, Mini Raman
In this paper, the spatio-temporal variations of Yemen, Oman and west coast of India upwelling are studied using wind and Sea Surface Temperature (SST) based upwelling indices. The relative contrib...
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Impact of spatially-dense in-situ observations on ocean forecasts of mixed layer and thermocline depth J. Oper. Oceanogr. (IF 3.1) Pub Date : 2023-01-18 Matthew J. Carrier, Hans E. Ngodock, Scott R. Smith, Joseph M. D’Addezio, John Osborne
ABSTRACT Ocean models, such as the Navy Coastal Ocean Model (NCOM), rely on ocean observations through data assimilation to predict the evolution of ocean phenomena accurately. The accuracy is highly dependent on the type and quantity of observations available. This work attempts to examine the impact of spatially dense in-situ profile observations on the forecasts of mixed layer depth (MLD) and thermocline
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NOAA's operational satellite ocean heat content products J. Oper. Oceanogr. (IF 3.1) Pub Date : 2022-12-19 Eileen M. Maturi, Lynn N. Shay, David R. Donahue, Deirdre A. Byrne
ABSTRACT NOAA generates a suite of Ocean Heat Content (OHC) products for the North Atlantic and the North and South Pacific basins on a daily basis. Knowledge of the upper Ocean Heat Content is a critical aid in assessing the ocean's impact on Tropical Cyclones (TCs) and weather events. In-situ and satellite measurements of Sea Surface Temperature (SST) and Sea Surface Height Anomaly (SSHA) are used
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Improved prediction of oil drift pattern using ensemble of ocean currents J. Oper. Oceanogr. (IF 3.1) Pub Date : 2022-11-28 Prasad S.J, Balakrishnan Nair T.M, Balaji B
Indian Coast Guard and oil spill responders utilise the operational oil spill advisory services of the Indian National Centre for Ocean Information Services (INCOIS) during the event of oil spills ...
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Nesting and data assimilation considerations in regional operational ocean forecasting J. Oper. Oceanogr. (IF 3.1) Pub Date : 2022-11-21 Hans Ngodock, Matthew Carrier, John Osborne, Scott Smith
A combination of nesting and data assimilation setups is explored for lowering analysis and forecast errors in a regional operational ocean model. Original downscaling from the global model and app...
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Swell and wind-sea partitioning of HF radar directional spectra J. Oper. Oceanogr. (IF 3.1) Pub Date : 2022-09-28 Lucy R. Wyatt, J. J. Green
Partitioning is a process used to separate wind-sea and swell contributions in an ocean wave directional spectrum to simplify, and hence make more useful, the interpretation of the spectrum for use...
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Atlas of surface currents in the Mediterranean and Canary–Iberian–Biscay waters J. Oper. Oceanogr. (IF 3.1) Pub Date : 2022-07-25 Justino Martínez, Emilio García-Ladona, Joaquim Ballabrera-Poy, Jordi Isern-Fontanet, Sergio González-Motos, José Manuel Allegue, Cristina González-Haro
Sea surface currents probably are the most relevant essential ocean variable affecting diverse societal challenges concerning the marine environmental (as, for example, safe and efficient navigatio...
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Sediment accretion in a lower-energetic location during two consecutive cold fronts J. Oper. Oceanogr. (IF 3.1) Pub Date : 2022-07-12 Vinícius S. Pessanha, Peter C. Chu, Matt K. Gough
ABSTRACT During the passage of two consecutive atmospheric cold fronts that migrated eastward along the northern Gulf of Mexico, currents, waves, and seafloor elevation were observed from instrumentation attached to a metal structure called ‘quadpod’ at the 7.5 m bathymetric contour off the coast of Panama City, Florida. During the passage of the first front, significant wave height (Hs) increased
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Development of small vessel advisory and forecast services system for safe navigation and operations at sea by N.D. Aditya, K.G. Sandhya, R. Harikumar and T.M. Balakrishnan J. Oper. Oceanogr. (IF 3.1) Pub Date : 2022-06-30 Dag Myrhaug, Pål F. Lader
Published in Journal of Operational Oceanography (Vol. 16, No. 3, 2023)
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Observed tropical cyclone-driven cold wakes in the context of rapid warming of the Arabian Sea J. Oper. Oceanogr. (IF 3.1) Pub Date : 2022-04-27 R. S. Akhila, J. Kuttippurath, B. Balan Sarojini, A. Chakraborty, R. Rahul
ABSTRACT We present a detailed long-term (1997–2019) analysis of observed cyclone-induced surface cooling (or cold wake) in the Arabian Sea. Here, the analysis is performed for 33 cyclones that drove significant cooling at the sea surface in three different seasons: the pre-monsoon, monsoon and post-monsoon. Our study shows that cyclones can cool the sea surface up to 4.76° C after their passage, depending
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Comparative analysis of the performance of the GOFS, PSY4 and AMSEAS ocean model frameworks in the Virgin Islands and Puerto Rico coastal ocean J. Oper. Oceanogr. (IF 3.1) Pub Date : 2022-04-05 Sonaljit Mukherjee, Sennai Habtes, Paul Jobsis
ABSTRACT This work compares the performance of three ocean model frameworks that currently produce outputs of the ocean properties specific to the US Caribbean ocean; the Global Ocean Forecast System (GOFS), US Navy Coastal Ocean Model for the American Seas (AMSEAS) and the Daily Global Physical Bulletin (PSY4). Separate comparisons are done for the ocean properties in the open ocean and nearshore
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Performance assessment of a Persian Gulf wind and wave forecasting system J. Oper. Oceanogr. (IF 3.1) Pub Date : 2022-02-01 Sandeepan B. S., Sashikant Nayak, Vijay Panchang
ABSTRACT Data from three satellites (JASON2, CRYOSAT, and SARAL/AltiKa) and two buoys were used to examine the performance of wind and wave forecasting models in the Persian Gulf. The quality of the satellite data was first examined by comparing them with buoy data. Wind speed data from all three satellites were found to be close to in situ measurements; for wave heights, SARAL/AltiKa data showed the
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Creation of a global tide analysis dataset: Application of NEMO and an offline objective analysis scheme J. Oper. Oceanogr. (IF 3.1) Pub Date : 2021-11-24 David Byrne, Jeff Polton, Colin Bell
ABSTRACT The accurate prediction of tides is vital for the operation of many industries, early warning of coastal flooding and scientific understanding of ocean processes. In this paper, we describe the creation method of a global dataset of tidal harmonics using NEMO (Nucleus for European Modelling of the Ocean) for the first time and an offline objective analysis scheme. Data are assimilated as part
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SOSeas Web App: An assessment web-based decision support tool to predict dynamic risk of drowning on beaches using deep neural networks J. Oper. Oceanogr. (IF 3.1) Pub Date : 2021-11-08 Javier García-Alba, Javier F. Bárcena, Luis Pedraz, Felipe Fernández, Andrés García, Marcos Mecías, Javier Costas-Veigas, María Luisa Samano, David Szpilman
ABSTRACT People still drown on beaches in unacceptable numbers due to the lack of knowledge about the risks taking place in them. The proposed methodology forecasts electronic bathing flags in beaches by integrating the benefits of metocean operational systems, machine learning and web-based decision support technologies into a 24/7 risk assessment service that could be easily implemented at any beach
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Copernicus Marine Service Ocean State Report, Issue 5 J. Oper. Oceanogr. (IF 3.1) Pub Date : 2021-09-22 Karina von Schuckmann, Pierre-Yves Le Traon, Neville Smith (Chair), Ananda Pascual, Samuel Djavidnia, Jean-Pierre Gattuso, Marilaure Grégoire, Signe Aaboe, Victor Alari, Brittany E. Alexander, Andrés Alonso-Martirena, Ali Aydogdu, Joel Azzopardi, Marco Bajo, Francesco Barbariol, Mirna Batistić, Arno Behrens, Sana Ben Ismail, Alvise Benetazzo, Isabella Bitetto, Mireno Borghini, Laura Bray, Arthur Capet
(2021). Copernicus Marine Service Ocean State Report, Issue 5. Journal of Operational Oceanography: Vol. 14, Copernicus Marine Service Ocean State Report, Issue 5 Supplement, pp. 1-185.
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Structured design of Australia’s in situ wave observing network J. Oper. Oceanogr. (IF 3.1) Pub Date : 2021-05-19 D. J. M. Greenslade, M. A. Hemer, I. R. Young, C. R. Steinberg
ABSTRACT This work revisits and extends an analysis of the Australian wave observing network. The method is based on calculating correlations between modelled wave variables at observation sites and the Australian coastal domain and identifying areas of low correlation. This gives an indication of the areas where variability of the wave fields is poorly captured by existing observation locations, i
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Sea surface temperature effects on the modelled track and intensity of tropical cyclone Gonu J. Oper. Oceanogr. (IF 3.1) Pub Date : 2021-04-07 Mehriar Alimohammadi, Hossein Malakooti, Maryam Rahbani
ABSTRACT The seven simulations were performed to investigate the role of the sea surface temperature (SST) in numerical prediction of tropical cyclones (TCs). The TC Gonu, formed over the Arabian Sea in 2007, was selected for this study. The first five simulations were performed using WRF model. In the first simulation as control simulation (CTL), the SST derived from NCEP-MMAB was used. In the second
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Quality of the ERA5 and CFSR winds and their contribution to wave modelling performance in a semi-closed sea J. Oper. Oceanogr. (IF 3.1) Pub Date : 2021-04-05 Emre Çalışır, Mehmet Burak Soran, Adem Akpınar
ABSTRACT This study aims to investigate the quality of ERA5, a recent reanalysis wind product, and its contribution to wave modelling performance in a semi-closed sea, the Black Sea. This investigation includes a comparison of ERA5 surface wind fields with the ones from the CFSR to assess if this latest reanalysis improved the representation of the surface winds. Wind speeds from both reanalyses were
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Towards a particle trajectory modelling approach in support of South African search and rescue operations at sea J. Oper. Oceanogr. (IF 3.1) Pub Date : 2021-04-02 M.G. Hart-Davis, B.C. Backeberg
ABSTRACT The ability to provide rapid decision support and more precise search area coordinates for rescuers to conduct search and rescue operations at sea are of high impact value for marine and maritime stakeholders. Search and rescue operations rely on accurate information about metocean conditions to locate objects in the ocean. These include local knowledge, operational ocean and wind forecasts
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Surface currents in operational oceanography: Key applications, mechanisms, and methods J. Oper. Oceanogr. (IF 3.1) Pub Date : 2021-03-23 Johannes Röhrs, Graig Sutherland, Gus Jeans, Michael Bedington, Ann Kristin Sperrevik, Knut-Frode Dagestad, Yvonne Gusdal, Cecilie Mauritzen, Andrew Dale, Joseph H. LaCasce
ABSTRACT This paper reviews physical mechanisms, observation techniques and modelling approaches dealing with surface currents on short time scales (hours to days) relevant for operational oceanography. Key motivations for this article include fundamental difficulties in reliable measurements and the persistent lack of a widely held consensus on the definition of surface currents. These problems are
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A global eddy-resolving ocean forecast system in China – LICOM Forecast System (LFS) J. Oper. Oceanogr. (IF 3.1) Pub Date : 2021-03-21 Hailong Liu, Pengfei Lin, Weipeng Zheng, Yihua Luan, Jinfeng Ma, Mengrong Ding, Huier Mo, Liying Wan, Tiejun Ling
ABSTRACT A global eddy-resolving forecast system LFS is developed based on a primitive ocean general circulation model. The system's configuration, forecast experiments, and a preliminary evaluation of the preoperational system are shown. In the preoperational stage, since the full data assimilation has not yet been set up for LFS, the initial state is obtained by nudging the ocean temperature and
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Monitoring pelagic Sargassum inundation potential for coastal communities J. Oper. Oceanogr. (IF 3.1) Pub Date : 2021-03-18 Joaquin Trinanes, N.F. Putman, G. Goni, C. Hu, M. Wang
ABSTRACT Pelagic Sargassum is a buoyant macroalgae that forms rafts at the ocean surface and serves as a biologically rich habitat for hundreds of diverse marine species. Since 2011, massive blooms of Sargassum have occurred in the tropical Atlantic and swept through the western tropical Atlantic, Caribbean Sea, and Gulf of Mexico. These recurring annual events have caused significant disruptions to
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Validation and application of model/reanalysis sea-level data to the establishment of the reference hydrographic surface in Spanish waters J. Oper. Oceanogr. (IF 3.1) Pub Date : 2021-03-17 Carlos J. González, J. Ramón Torres, Patricia Bernárdez, Rodolfo J. Ramos
ABSTRACT Sea-level reanalysis data fields from the Iberia-Biscay-Ireland Monitoring and Forecasting Center (IBIre) were analysed and validated with coastal tide-gauge and vertical positioning data from 110 experimental stations, complemented with the Technical University of Denmark global ocean tide model and mean dynamic topography DTU10, in order to establish the reference hydrographic surface (RHS)
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Variational data assimilation of sea surface height into a regional storm surge model: Benefits and limitations J. Oper. Oceanogr. (IF 3.1) Pub Date : 2021-02-11 David Byrne, Kevin Horsburgh, Jane Williams
ABSTRACT Storm surges are coastal sea-level variations caused by meteorological conditions. It is vital that they are forecasted accurately to reduce the potential for financial damage and loss of life. In this study, we investigate how effectively the variational assimilation of sparse sea level observations from tide gauges can be used for operational forecasting in the North Sea. Novel data assimilation
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Evaluating numerical and free-drift forecasts of sea ice drift during a Southern Ocean research expedition: An operational perspective J. Oper. Oceanogr. (IF 3.1) Pub Date : 2021-02-08 Marc de Vos, Michael Barnes, Louise C. Biddle, Sebastiaan Swart, Carla-Louise Ramjukadh, Marcello Vichi
ABSTRACT Antarctic sea ice is prevalently seen as a major player in the climate system, but it is also an important factor in polar maritime safety. Remote sensing and forecasting of Southern Ocean sea ice at time scales suitable for navigation and research planning remain challenging. In this study, numerical sea ice drift forecasts are assessed from the perspective of informing shipping operations
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Evaluating numerical and free-drift forecasts of sea ice drift during a Southern Ocean research expedition: An operational perspective J. Oper. Oceanogr. (IF 3.1) Pub Date : 2021-02-08 Marc de Vos, Michael Barnes, Louise C. Biddle, Sebastiaan Swart, Carla-Louise Ramjukadh, Marcello Vichi
ABSTRACT Antarctic sea ice is prevalently seen as a major player in the climate system, but it is also an important factor in polar maritime safety. Remote sensing and forecasting of Southern Ocean sea ice at time scales suitable for navigation and research planning remain challenging. In this study, numerical sea ice drift forecasts are assessed from the perspective of informing shipping operations
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Spatio-temporal variation in sea state parameters along virtual ship route paths J. Oper. Oceanogr. (IF 3.1) 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 3.1) 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 3.1) 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 3.1) 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 3.1) 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 3.1) 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 3.1) 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 3.1) Pub Date : 2020-09-10 Riyanka Roy Chowdhury, S. Prasanna Kumar, Arun Chakraborty
ABSTRACT 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
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On the upper ocean response of Bay of Bengal to very severe cyclones Phailin and Hudhud J. Oper. Oceanogr. (IF 3.1) Pub Date : 2020-09-07 Anju Issac Elizabeth, John B. Effy, P. A. Francis
ABSTRACT 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
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Observation impact statement on satellite sea surface salinity data from two operational global ocean forecasting systems J. Oper. Oceanogr. (IF 3.1) Pub Date : 2020-08-10 M. J. Martin, E. Remy, B. Tranchant, R. R. King, E. Greiner, C. Donlon
ABSTRACT 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
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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 3.1) Pub Date : 2020-06-16 Christopher S. Meinen, Ryan H. Smith, Rigoberto F. Garcia
ABSTRACT 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
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Indian Ocean wave forecasting system for wind waves: development and its validation J. Oper. Oceanogr. (IF 3.1) Pub Date : 2020-06-02 P. G. Remya, T. Rabi Ranjan, P. Sirisha, R. Harikumar, T. M. Balakrishnan Nair
ABSTRACT 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
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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 3.1) 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 3.1) 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 3.1) 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 3.1) 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 3.1) Pub Date : 2020-03-23 Ana Paula Morais Krelling, Avijit Gangopadhyay, Ilson da Silveira, Felipe Vilela-Silva
ABSTRACT 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
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Evaluating wind datasets for wave hindcasting in the NW Iberian Peninsula coast J. Oper. Oceanogr. (IF 3.1) Pub Date : 2020-03-14 M. Viitak, P. Avilez-Valente, A. Bio, L. Bastos, I. Iglesias
ABSTRACT 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
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Freshening of seawater in the Mahim Bay, Mumbai, India: Insight from an environmental isotope study J. Oper. Oceanogr. (IF 3.1) Pub Date : 2020-03-11 Jacob Noble, Tirumalesh Keesari
ABSTRACT 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
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Measurement of the North Equatorial Current/Undercurrent by a subsurface mooring at 160°E J. Oper. Oceanogr. (IF 3.1) Pub Date : 2020-03-09 Jiahao Wang, Xi Chen, Kefeng Mao
ABSTRACT 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
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Evaluation of extreme storm waves in the Black Sea J. Oper. Oceanogr. (IF 3.1) Pub Date : 2020-03-09 M. Bernardino, L. Rusu, C. Guedes Soares
ABSTRACT 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 3.1) 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 3.1) Pub Date : 2019-11-04 K. Maneesha, D. Hari Prasad, K. V. K. R. K. Patnaik
ABSTRACT 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
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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 3.1) 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 3.1) 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 3.1) 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 3.1) 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 3.1) 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 3.1) 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 3.1) 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 3.1) 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 3.1) 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