Mariana C Bernardino

Mariana C Bernardino
University of Lisbon | UL · Centre for Marine Technology and Ocean Engineering

PhD

About

51
Publications
11,872
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608
Citations
Citations since 2017
18 Research Items
358 Citations
2017201820192020202120222023020406080
2017201820192020202120222023020406080
2017201820192020202120222023020406080
2017201820192020202120222023020406080

Publications

Publications (51)
Presentation
Full-text available
Dear Colleagues, In this webinar, our focus will be on ‘Offshore Renewables for a Transition to a Low Carbon Society’. Marine renewable energy resources are abundant, and the amount of energy that can be generated using existing technologies varies from site-to-site and day-to-day, depending on the location and weather conditions. As we are all a...
Article
Full-text available
Earth system modelling is currently playing an increasing role in weather forecasting and understanding climate change, however, the operation, deployment and development of numerical Earth system models are extremely demanding in terms of computational resources and human effort. Merging synergies has become a natural process by which national met...
Article
This work analyses the change in the Arctic Oscillation (AO) index by the end of the 21st century and its relationship with present and future met ocean conditions on the North Atlantic Ocean. The seasonal distribution of the AO index changes is analysed and an annual regression line is obtained. Pearson correlation is computed between AO index and...
Article
This paper analyzes the performance of multiple wind and wave operational forecasts of Hurricane Lorenzo, the easternmost Category 5 Atlantic hurricane on record. Deterministic and ensemble forecast products from the National Centers for Environmental Prediction, Environment Canada's Meteorological Center, US Navy Fleet Numerical Meteorology and Oc...
Conference Paper
Full-text available
Wave energy is abundant and has a higher density and predictability than wind and solar. Due to the global atmospheric circulation patterns the western coasts of the continents have higher wave energy. This resource is usually quantified in terms of wave energy flux (or wave power) expressed in watts per meter of crest length. The European coasts a...
Article
An improved understanding of the present and future marine climatology is necessary for numerous activities, such as operation of offshore structures, optimization of ship routes and the evaluation of wave energy resources. To produce global wave information, the WW3 wave model was forced with wind and ice-cover data from an RCP8.5 EC-Earth system...
Article
A statistical analysis of significant wave height (Hs) in eight locations offshore Portugal continental coast is performed. Specifically, locations at different water depths at Aguçadoura, Leixões, Nazaré, Peniche, Sines and Faro were chosen. The spectral and parametric information from these points used in this analysis was obtained from 21-year h...
Conference Paper
A statistical analysis of significant wave height (Hs) in eight locations offshore Portugal continental coast is performed. Specifically, locations at different water depths at Aguçadoura, Leixões, Nazaré, Peniche, Sines and Faro were chosen. The spectral and parametric information from these points used in this analysis was obtained from 21-year h...
Conference Paper
An improved understanding of the present and future marine climatology is necessary for numerous activities, such as operation of offshore structures, optimization of ship routes and the evaluation of wave energy resources. To produce global wave information, the WW3 wave model was forced with wind and ice-cover data from an RCP8.5 EC-Earth system...
Article
Full-text available
The efficiency of wave energy converters (WECs) is generally evaluated in terms of historical wave conditions that do not necessarily represent the conditions that those devices will encounter when put into operation. The main objective of the study is to assess the historical and near future efficiency and energy cost of two WECs (Aqua Buoy and Pe...
Article
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. T...
Conference Paper
Full-text available
The main objective of this work is to evaluate the extreme storms in the Black Sea using a Lagrangean approach. Results of hindcast simulations with a 3-hour temporal resolution are provided by the SWAN model implemented on the entire sea basin. The methodology is applied to 30 years of wave simulations (from 1987 to 2016) to identify the extreme s...
Article
The Cape Verde Islands form an archipelago off the African coast in the Atlantic Ocean. Since it is highly dependent on fossil fuels, Cape Verde decision makers have started to take into account also the potential of renewable energies, especially wind and solar. In particular, wind power has already 26 MW installed. From this perspective, the pres...
Article
Full-text available
Hotels are buildings with one of major specific energy and water demands per occupant, due to high levels of services and comfort provided and expectation from tourists, meaning that they could be one of the building types more vulnerable to changes in climate. Usually the greater occupancy rates of hotels happen in summer, for beach and city hotel...
Chapter
Full-text available
A Lagrangean methodology is applied to 35 years of the Era-interim reanalysis significant wave height data, from 1979 to 2014, over the North Atlantic basin. A statistical analysis of storm frequency and of different storm characteristics as maximum significant wave height in the track, storm area associated to the maximum significant wave height,...
Conference Paper
Full-text available
Hotels are one of building types that consumes more energy and water per person and are vulnerable to climate change because in the occurrence of extreme events (heat waves, water stress) same failures could compromise the hotel services (comfort) and increase energy cost or compromise the landscape and amenities due to water use restrictions. Clim...
Article
Full-text available
Coastal low-level jets (CLLJ) are low tropospheric coast-parallel wind features, confined to the marine atmospheric boundary layer, which lay on the east flank of the semi-permanent sub-tropical high-pressure systems, in the mid-latitudes, along equator-ward eastern boundary currents. Coastal jets are of utmost relevance to the regional climate, th...
Chapter
Full-text available
An evaluation is made of the possible changes in available wind power potential under climate change conditions using high resolution wind data extracted for the pilot zone of Aguçadora at the northern Portuguese coast. Wind data produced in the framework of EURO-CORDEX, using two of the latest emission scenarios defined by the IPCC AR5 assessment,...
Research
In the last decades developing wind and wave predictions in marine environments have become popular research topics. Knowledge of the marine environment has been understood better with modelled wind and wave datasets, supplemented by in situ and remotely sensed data.Marine weather forecasts and climatology are used for shipping, ošshore operations,...
Conference Paper
Full-text available
Climate impact assessments and the development of adaptation strategies requires the study of vulnerabilities and risk to climate variables. The energy and water consumption demand in hotel usually change with occupancy rate and climate. In this article a simplified methodology is presented and applied to identify the climate change impact in hospi...
Chapter
Full-text available
A Lagrangian approach is used to study the characterization of the situations of extreme storms, monitoring the characteristics of each storm since their initiation to the dissipation, contrasting with the more usual Eulerian approach that only assesses the local conditions of waves. In order to assess the characteristics of the ocean storms of the...
Conference Paper
Full-text available
Coastal Low-Level Jets (henceforth referred to as "coastal jets" or simply as CLLJ) are low-tropospheric mesoscale wind features, with wind speed maxima confined to the marine atmospheric boundary layer (MABL), typically bellow 1km, and most of the times below 500 m. Coastal jets occur in the eastern flank of the semi-permanent subtropical mid-lati...
Article
Full-text available
The performance of a wind-wave modelling system applied to the Black Sea basin is evaluated. The models considered are WRF (Weather Research and Forecasting) for wind and SWAN (Simulating Waves Nearshore) for waves. Model system simulations are carried out for a four-month period at the beginning of 2002. The accuracy of the predictions is further...
Chapter
Full-text available
This study aims to determine the offshore wind energy potential for the coasts of Portugal and Galicia using the mesoscale atmospheric model WRF. The model is used to generate winds at the turbine hub height of 80m height in order to calculate the offshore wind potential at the two locations. Wind data obtained from the model for the period 2009201...
Data
An operational system based on numerical models for wind and wave forecasting in the Portuguese coastal area is presented. It is based on the wave models WAM (WAve prediction Model) and SWAN (Simulating WAves Nearshore),driven by the wind fields provided by the atmospheric models GFS (Global Forecast System) from NCEP (National Centers for Environm...
Conference Paper
Full-text available
This study aims to determine the offshore wind energy potential for Portugal using the mesoscale atmospheric model wrf that provides a reliable and accurate wind data set for this area, which allows identifying the wind resources in potential areas for developing offshore wind parks. Before a model can be used to provide a wind climatology a valida...
Chapter
Full-text available
An accurate simulation of the wave regimes of the Black Sea is of most importance in different areas. The most efficient methodology to obtain wind and wave information for large areas is through the use of physical models. In global models however. the spatial resolution of the forecasting fields is low and the wind is underestimated, this problem...
Article
Full-text available
An operational system based on numerical models for wind and wave forecasting in the Portuguese coastal area is presented. It is based on the wave models WAM (WAve prediction Model) and SWAN (Simulating WAves Nearshore),driven by the wind fields provided by the atmospheric models GFS (Global Forecast System) from NCEP (National Centers for Environm...
Chapter
Full-text available
The paper describes the efforts done in establishing a deep water prediction capability for the Portuguese waters and in complementing it in waters of decreasing depth approaching coast. Hindcasts have been made of the wave conditions in the shallow water areas up to the entrance of major ports in the Portuguese Coast, using as boundary conditions...
Conference Paper
Full-text available
The main objective of the present work is to develop the wave forecasting system that is operational in the Centre for Marine Technology and Engineering, Lisbon, Portugal. This consists in including a new area that covers the coastal environment close to the port of Lisbon, namely the entrance to the Tagus estuary. The system is based on the wave m...
Article
Full-text available
Estuaries are commonly characterized as coastal environments combining locally generated waves with waves that penetrate from offshore. The present work provides a study on the wave generation and propagation in the Tagus estuary that was carried out by performing simulations with numerical models. For this purpose, SWAN spectral phase averaging wa...
Conference Paper
Full-text available
The classical approach to storm statistics in the ocean is an Eulerian analysis of wave time series at a given location, in which the wave data can be observations or results of wave models. The information obtained from this approach is storm frequency, duration and intensity, from which extremes at the particular location can be estimated. The av...
Conference Paper
Full-text available
The influence of the wind field resolution in the accuracy of the wave predictions is studied using spectral numerical models in highly non-stationary situations. The main area of interest is the port of Sines, located in the Portuguese continental coastal environment south of Lisbon. An implementation of the MM5 atmospheric model was developed for...
Chapter
Full-text available
A falta de água durante períodos mais ou menos prolongados leva a situações que podem ser desastrosas nas vertentes económica, ambiental e social, afectando milhões de pessoas em todo o mundo e não sendo Portugal uma excepção. A identificação de acontecimentos de seca, e a sua caracterização quanto à magnitude, duração e deficit hídrico, são import...
Article
Full-text available
A sequential time dependent data assimilation scheme based on the Kalman filter is applied to a spectral wave model. Usually, the first guess covariance matrices used in optimal interpolation schemes are exponential spreading functions, which remain constant. In the present work the first guess correlation errors evolve in time according to the dyn...
Article
Drought is a normal phenomenon in European climates, especially in southern Europe where dry summers frequently occur without disastrous effects. However, in other seasons, a sustained, extended deficit in precipitation may result in serious conse- quences, in several regions of Europe. Therefore, the assessement of possible changes of drought risk...

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Projects

Projects (4)
Project
The general objective of the CLIMEWAR project is to explore the future wave climate in the Mediterranean and Black seas using an ensemble of wave climate projections capable of sufficiently sampling the uncertainty associated with projected future wave climate and to evaluate the impact of climate changes on the sea state conditions by comparisons with the present wave climate.
Project
The objective of this project is to study the present and the future marine climates off the Atlantic coasts of the Iberian Peninsula using the high resolution wind and wave data presently being produced in the framework of the FCT project CLIBECO for present marine climate and for the end for the twenty-first century. Another goal is to study the evolution of the large scale to regional wave and wind climates (from the North Atlantic sub-basin to the Iberian Peninsula waters) in the twenty-first century in a warming climate. The climatic characterization of the marine environment will include both the variability at different time scales, the long term trends and will have particular focus in extreme events. For this, different approaches using only wave data or wave data together with atmospheric data will be investigated and storms will be characterized in order to define different regimes and its relations with the large scale atmospheric regimes.
Project
The general objective of the ACCWA project is to quantify the present and to explore the future wave climate in the Black Sea basin, with a special focus on the Romanian coastal environment.