Response of waves and coastline evolution to climate variability off the Niger Delta coast during the past 110years

Dada, Olusegun A.; Li, Guangxue; Qiao, Lulu; Ma, Yanyan; Ding, Dong; Xu, Jishang; Пин, Ли; Yang, Jian

doi:10.1016/j.jmarsys.2016.04.005

Cited by 31 publications

(18 citation statements)

References 61 publications

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“…The quality of ERA20 data is affected, particularly in regions of sparse observational coverage [51], so it is better in the Northern Hemisphere than in the Southern Hemisphere. However, ERA20 has been used globally in the study of historical wave and coastal evolution [53][54][55]. ERA20's spatial resolution is approximately 125 km and wave parameters can be obtained 3-hourly.…”

Section: Literature Reviewmentioning

confidence: 99%

Reduction of the capture width of wave energy converters due to long-term seasonal wave energy trends

Ulazia

Peñalba

Ibarra-Berastegui

et al. 2019

Renewable and Sustainable Energy Reviews

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This paper presents a pioneering attempt to evaluate the impact of long-term seasonal wave energy trends on hydrodynamic capture by wave energy converters (WECs) over the 20th century. The ERA20c reanalysis generated by the European Centre for Medium-Range Weather Forecasts is calibrated against the ERA-Interim reanalysis via the quantile matching technique, and validated against buoy measurements across the Northeast Atlantic Ocean. The study focus is the seasonal variation of wave resources over the 20th century, so the calibration is performed using seasonally classified reanalysis and measured data. Results show that wave energy flux increased to 3 and 2 kW/m per decade in winter and spring/autumn, respectively, and that the frequency of off-limit events, defined as sea-states with significant wave height of over 5 m, has doubled over the 20th century. The impact of such wave energy trends is analysed in this paper using an oscillating wave surge converter, which shows steadily increasing power absorption over the 20th century. However, as a result of higher decadal trends and the increase in off-limit events, the hydrodynamic efficiency of the WEC, referred to as the capture width ratio, decreases up to 20%.1. The wave energy flux and its inter-annual variability (analysing the seasonal cycle), 2. The bi-dimensional probability density function, or scatter diagram, given by the wave period and the wave height, and 3. The probability of occurrence of off-limit events, where the WEC needs to activate its survival mode.In general, wave data from previous one, two or three decades are used for assessing the resource and power production capabilities of WECs in a given location [9][10][11][12][13][14][15]. However, by only considering data

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Section: Literature Reviewmentioning

confidence: 99%

Reduction of the capture width of wave energy converters due to long-term seasonal wave energy trends

Ulazia

Peñalba

Ibarra-Berastegui

et al. 2019

Renewable and Sustainable Energy Reviews

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“…However, the ERA20 reanalysis has been used in both hemispheres, e.g. for the study of long-term coastal evolution [34,23] and the global study of the relation between historical extreme waves and climate change [35].…”

Section: Wave Datamentioning

confidence: 99%

Wave energy resource variation off the west coast of Ireland and its impact on realistic wave energy converters’ power absorption

et al. 2018

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Historical wave trends are studied via ECMWF's reanalyses over the 20th century. • ERA20 is calibrated via quantile-matching and validated against buoy measurements. • The wave energy resource increases over 40% off the west coast of Ireland. • A 30% surplus of AMPP is observed for different WECs due to resource variations. • Extreme events occurrence doubled, doubling the time WECs spend in survival mode.

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“…More observations are available, the more reliable are the data generated via the ERA20 reanalysis [34]. Consequently, the data provided by the ERA20 reanalysis are more accurate in the northern hemisphere, although they have also been used for the study of historical wave trends and coastal evolution in different locations of the southern hemisphere [35][36][37]. The spatial resolution of the ERA20 reanalysis is approximately 125 km and wave parameters can be obtained three-hourly [34].…”

Section: Era20c and Era-interim Reanalysesmentioning

confidence: 99%

Historical Evolution of the Wave Resource and Energy Production off the Chilean Coast over the 20th Century

et al. 2018

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The wave energy resource in the Chilean coast shows particularly profitable characteristics for wave energy production, with relatively high mean wave power and low inter-annual resource variability. This combination is as interesting as unusual, since high energetic locations are usually also highly variable, such as the west coast of Ireland. Long-term wave resource variations are also an important aspect when designing wave energy converters (WECs), which are often neglected in resource assessment. The present paper studies the long-term resource variability of the Chilean coast, dividing the 20th century into five do-decades and analysing the variations between the different do-decades. To that end, the ERA20C reanalysis of the European Centre for Medium-Range Weather Forecasts is calibrated versus the ERA-Interim reanalysis and validated against buoy measurements collected in different points of the Chilean coast. Historical resource variations off the Chilean coast are compared to resource variations off the west coast in Ireland, showing a significantly more consistent wave resource. In addition, the impact of historical wave resource variations on a realistic WEC, similar to the Corpower device, is studied, comparing the results to those obtained off the west coast of Ireland. The annual power production off the Chilean coast is demonstrated to be remarkably more regular over the 20th century, with variations of just 1% between the different do-decades.

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Response of waves and coastline evolution to climate variability off the Niger Delta coast during the past 110years

Cited by 31 publications

References 61 publications

Reduction of the capture width of wave energy converters due to long-term seasonal wave energy trends

Reduction of the capture width of wave energy converters due to long-term seasonal wave energy trends

Wave energy resource variation off the west coast of Ireland and its impact on realistic wave energy converters’ power absorption

Historical Evolution of the Wave Resource and Energy Production off the Chilean Coast over the 20th Century

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