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Evaluation Of Wave Forecasting Models And Forecast Wind Fields In The Canadian Context
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Book Synopsis Evaluation of Wave Forecasting Models and Forecast Wind Fields in the Canadian Context by : Sandra Hodgins
Download or read book Evaluation of Wave Forecasting Models and Forecast Wind Fields in the Canadian Context written by Sandra Hodgins and published by . This book was released on 1988 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviews requirements in Canadian waters with current approaches to numerical wave prediction & derivation of forecast wind fields by Canadian Meteorological Centre. Strategy is given for organizing regional wave forecasts in relation to existing numerical weather predition services & recommends steps required to achieve high level of wave forecasting.
Book Synopsis Evaluation of Wave Forecasting Models and Forecasting Wind Fields in the Canadian Context by : Canada Oil and Gas Lands Administration
Download or read book Evaluation of Wave Forecasting Models and Forecasting Wind Fields in the Canadian Context written by Canada Oil and Gas Lands Administration and published by . This book was released on 1987 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Wave Forecasting Models and Forecasting Wind Fields in the Canadian Context by :
Download or read book Evaluation of Wave Forecasting Models and Forecasting Wind Fields in the Canadian Context written by and published by . This book was released on 1988 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Operational Test of Wave-forecasting Models During the Canadian Atlantic Storms Program (CASP) by : Bassem M. Eid
Download or read book Operational Test of Wave-forecasting Models During the Canadian Atlantic Storms Program (CASP) written by Bassem M. Eid and published by Environmental Study Research Funds. This book was released on 1987 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: The setting-up and testing of a regional spectral ocean waves model for providing real-time wave forecasting during CASP January - March, 1986. ODGP spectral Ocean Wave Model was selected for this test. Model is fully directional spectral model which resolves spectra into 24 directional bands and 15 frequencies. Modified version of ODGP was developed to include shallow-water equations describing wave propagation in CASP-OC area.
Book Synopsis An Evaluation of Wave Forecasting in the Beaufort Sea, Summer 1984 by : K. A. MacDonald
Download or read book An Evaluation of Wave Forecasting in the Beaufort Sea, Summer 1984 written by K. A. MacDonald and published by . This book was released on 1985 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1989 with total page 1364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Operational Analysis and Prediction of Ocean Wind Waves by : Madhav L. Khandekar
Download or read book Operational Analysis and Prediction of Ocean Wind Waves written by Madhav L. Khandekar and published by Springer Science & Business Media. This book was released on 2013-03-07 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph is an attempt to compile the present state of knowledge on ocean wave analysis and prediction. The emphasis of the monograph is on the development of ocean wave analysis and predic tion procedures and their utility for real-time operations and appli cations. Most of the material in the monograph is derived from journal articles, research reports and recent conference proceedings; some of the basic material is extracted from standard text books on physical oceanography and wind waves. Ocean wave analysis and prediction is becoming an important activity in the meteorological and oceanographic services of many countries. The present status of ocean wave prediction may be compar able to the status of numerical weather prediction of the mid-sixties and early seventies when a number of weather prediction models were developed for research purposes, many of which were later put into operational use by meteorological services of several countries. The increased emphasis on sea-state analysis and prediction has created a need for a ready reference material on various ocean wave analysis and modelling techniques and their utility. The present monograph is aimed at fulfilling this need. The monograph should prove useful to the ocean wave modelling community as well as to marine forecasters, coastal engineers and offshore technologists. The monograph could also be used for a senior undergraduate (or a first year graduate) level course in ocean wave modelling and marine meteorology.
Book Synopsis An Evaluation of a Computerized Numerical Wave Prediction Model for the North Atlantic Ocean by : Donald Charles Bunting
Download or read book An Evaluation of a Computerized Numerical Wave Prediction Model for the North Atlantic Ocean written by Donald Charles Bunting and published by . This book was released on 1970 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Accuracy of Wind and Wave Forecasts by : J. S. Hopkins
Download or read book The Accuracy of Wind and Wave Forecasts written by J. S. Hopkins and published by . This book was released on 1997 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Statistics compiled by the UK Met Office for the verification of offshore wind and wave forecasts have been collated and presented here to show the main seasonal and geographical variations in waters around the UK. For risk analysis purposes, it is useful to know the likelihood of a specified threshold being exceeded, when a forecast below that threshold has been made. Therefore, the raw verification statistics have been converted to probabilities of threshold exceedance, as a function of forecast period out to 120 hours. The relative importance of RMS error and bias is discussed, and examples given. The contribution to forecast accuracy made by the additional input of the human forecaster to the guidance provided by the numerical forecast model is assessed and quantified.
Author :World Meteorological Organization Publisher :Secretariat to World Meteorological Organization ISBN 13 : Total Pages :174 pages Book Rating :4.:/5 (89 download)
Book Synopsis Guide to Wave Analysis and Forecasting by : World Meteorological Organization
Download or read book Guide to Wave Analysis and Forecasting written by World Meteorological Organization and published by Secretariat to World Meteorological Organization. This book was released on 1998 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamics and Modelling of Ocean Waves by : G. J. Komen
Download or read book Dynamics and Modelling of Ocean Waves written by G. J. Komen and published by Cambridge University Press. This book was released on 1994-09-15 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive introduction and reference prepared by the world's leading ocean wave modellers.
Book Synopsis The Analysis and Forecasting of Sea and Swell Conditions in Deep Water by : M. R. Morgan
Download or read book The Analysis and Forecasting of Sea and Swell Conditions in Deep Water written by M. R. Morgan and published by 1971.. This book was released on 1971 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A description of the principles and practices used in the preparation of wave data analyses and forecasts at the MFWC Halifax is presented. The method makes maximum use of the available reported wave data, and allows one to fill in the areas of inadequate data by using the persistence of waves from an historical sequence of charts, modified according to the classical patterns of development or decay using duration and fetch considerations and the wind field. While computer produced wave forecasts provide useful values, and may be expected to achieve the best results in due course, a combination of the objective and subjective procedures is currently proving more reliable"--Abstract.
Book Synopsis Clustering-Based Global Forecasting Models for Significant Wave Height Prediction by : Rohini Chandrala
Download or read book Clustering-Based Global Forecasting Models for Significant Wave Height Prediction written by Rohini Chandrala and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accurate wave predictions safeguard maritime operations, coastal communities, and marine ecosystems. Significant wave height, an average height of the highest one-third of the waves recorded during the sampling period, plays a crucial role in analyzing wave conditions and assessing coastal hazards among various wave fields. Forecasting significant wave height for various future timeframes, starting from 0.5 hours ahead, is vital for estimating coastal storm surges, issuing weather warnings, and preventing coastal disasters, especially during imminent large waves. Numerical methods are commonly used for wave forecasting; however, due to their computational intensity, they often require more time. In emergency situations, data-driven models offer faster wave predictions while maintaining accuracy, for shorter timeframes into the future. Data-driven forecasting models often treat data reported by buoys individually and forecast significant wave height based on the historical data of the respective buoy. Models trained on data from multiple buoys might leverage combined insights. However, training a single model on all different buoys may reduce forecasting accuracy when the data is from buoys in different environments. This study proposes a two-step approach to improve significant wave height predictions on a set of Environment and Climate Change Canada (ECCC) buoy data. First, we cluster buoys with similar data, enabling the formation of clusters with similar environmental conditions. Second, we train a global forecasting model on each cluster and predict significant wave height for individual buoys. We evaluate our proposed approach for significant wave height forecasting using data collected by 28 ECCC buoys distributed across the Atlantic, Pacific, and Great Lakes regions of Canada. Our results demonstrate that the clustering-based forecasting models, which leverage the shared patterns and relationships among multiple related buoy data, show competitive performance compared to the data-driven models trained on individual buoy data or universal model trained on all buoy data, in extreme events where wave height exceeds 6 meters.
Book Synopsis Forecasting Beaufort Sea Wind Waves by Momentum Balance Method by : MacLaren Plansearch Limited
Download or read book Forecasting Beaufort Sea Wind Waves by Momentum Balance Method written by MacLaren Plansearch Limited and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High-resolution Wave Forecasting the Catalan Coast Case by : Elena Pallarès López
Download or read book High-resolution Wave Forecasting the Catalan Coast Case written by Elena Pallarès López and published by . This book was released on 2016 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is widely known that wind and wave predictions in the nearshore are less precise for semi enclosed domains than in the open ocean. The Catalan coast is a clear example of this situation, with a wave climate controlled by short fetches, complex bathymetry, high wind field variability in time and space, and sea and swell waves combined that generate bimodal spectra. These characteristics, typical for a semi-enclosed basin, limit the reliability of wave predictions in the area, with errors on the significant wave height around 10% and a clear under-prediction of the wave period with errors around 30%. The motivation of this work is to improve the actual wave forecasting abilities for the Catalan Coast using the SWAN v.4091 wave model. In order to achieve this goal, three working lines are considered: (1)adapting the model to the Catalan coast conditions, tuning the wave growth rates included in the model to better reproduce the observed values, (2) evaluate the effect of the currents and wind into the wave field by using a coupled system and (3) consider the use of unstructured grids as an alternative to the traditionally nested systems in order to obtain high resolution wave forecasts in coastal areas reducing the computational time and avoiding the use of internal boundary conditions with their associated errors. The results obtained support previous studies where the limited ability of the models to reproduce wave growth rates in young seas have been detected. The whitecapping term correction proposed in this document helps reducing under-prediction of the wave period observed with almost no effect on the significant wave height. This correction can be applied to similar environments. However, the proposed formulation is only suitable for the early stages of generation and should be discontinued after waves reach a certain maturity. Two coupling strategies are considered, a one-way coupling where current fields are directly introduced into the wave model, and a two-way coupling where the waves, currents and winds models run in parallel. The effects of the coupling are evaluated during calm periods but also during energetic events. The results show that during calm conditions the coupling does hardly improve the results while during energetic events, such as superficial currents intensifications or wind jet events, the coupling has greater importance. However, the two-way coupling has extremely high computational requirements, not always available. In this sense, the use of unstructured grids as an alternative to the traditional nested systems is presented. The main benefit of unstructured grids is that allows working with a single grid with different resolutions in each sub-domain, improving the resolution in coastal areas. Other advantage is the capacity to better reproduce the sharp coastline and the areas around the islands. The design of unstructured grids has been shown as one of the most delicate parts of this methodology, requiring special attention for the grid generation criteria. The validation of the results, performed with buoy measurements in the nearshore but also for the entire domain with altimetry measurements, allows stating that unstructured grids perform correctly in the study area. Finally, the proposed work suitability for an operational forecasting system has been considered. The whitecapping term modification is proven to be decisive in the quality of the wave forecast, while the coupling is not always recommended depending on computational capabilities. The use of unstructured grids with a regional triangular mesh covering the entire Western Mediterranean sea is considered as the first option, providing accurate high resolution wave conditions near the coast with a clear reduction of the computational time in comparison with a traditional nested system.
Book Synopsis An Offshore Wind Resource Assessment and a Look Into Model Errors in Wind Forecasts by : Matthew Brenton Corkum
Download or read book An Offshore Wind Resource Assessment and a Look Into Model Errors in Wind Forecasts written by Matthew Brenton Corkum and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
