Long-term spatio-temporal trends in extreme wave events in the Niger delta coastlines.
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Date
2021-05-28
Journal Title
Journal ISSN
Volume Title
Publisher
ELSEVIER , Continental Shelf Research
Abstract
Wave climate in the marginal seas and estuaries provide baseline information, risk assessments and essential
insight into coastal design, structure and engineering projects. This paper investigates the Spatio-temporal trends
in extreme Significant Wave Height (SWH) in the Niger Delta coastlines. For the study domain, European Centre
for Medium-Range Weather Forecasts (ECMWF) global atmospheric reanalysis ERA-Interim and wave hindcast
data covering 37 years (January 1, 1980–December 31, 2016), derived from WAVEWATCH III (WW3) model
were used in the analysis. The largest 99th percentile approach was used to analyze extreme SWH values. Results
showed near neutral and negative trends over the region. The trends are generally insignificant for the 100-year
return period. The sharp variation in extreme SWH between 1998 and 2000 resulted from a strong El Nino and La
Nina phenomenon, which is associated with the weakening and strengthening of the West-African Monsoon.
Description
Continental Shelf Research, 224, 104471.
Keywords
Wave Climate, Extreme SWH, Spatio-temporal trend, WAVEWATCH III, Niger Delta coastlines, ACECOR
Citation
Osinowo, A. A., & Popoola, S. O. (2021). Long-term spatio-temporal trends in extreme wave events in the Niger delta coastlines. Continental Shelf Research, 224, 104471.