Journal
RENEWABLE ENERGY
Volume 31, Issue 2, Pages 241-248Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2005.08.019
Keywords
extreme wave heights; generalised Pareto distribution
Funding
- NERC [soc010002] Funding Source: UKRI
- Natural Environment Research Council [soc010002] Funding Source: researchfish
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Extreme waves are an important ocean feature. We estimate return values of significant wave height from measurements by satellite altimeters over the North Atlantic. The data were divided into 2 degrees latitude by 2 degrees longitude grid squares and the median along the satellite track was taken in each. Return values were estimated by fitting a Generalised Pareto Distribution to all values above a threshold, which was allowed to vary spatially. This method is objective, more statistically robust and thus theoretically preferable to fitting a distribution to all the data. The novel method gave return values that were up to 37% smaller than those estimated by fitting a Fisher-Tippet 1 distribution to all the data. (c) 2005 Elsevier Ltd. All rights reserved.
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