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uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged. |
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On 26/07/2020 12:05, Norman Lynagh wrote:
Unfortunately, this is not an academic exercise. My requirement is to provided wind and wave data for offshore design purposes. The engineers require a single number for each. They are not particularly bothered how it is calculated. They most certainly do not want a range of numbers. If that is what they are given they have to design to the highest. There is a very similar problem in coastal marine flood defense engineering. I got into a soft,non-pugilistic, argument with a proper academic oceanographer. About the repeated use of ,IMHO, erroneous stratistical marine flooding return period calculations, because of GIGO, garbage in , garbage out. Proper academic oceanographers , if highly relevant data is missing or questionable , and they know its iffy/missing, then they just exclude any reference to it being missing or questionable in their inputs . Include missing record-breakers and it makes a lot of difference to these return-period calculations, and so heights/visual intrusions/strengths/costs of flood walls etc. For local to me marine flooding , the tide gauge broke in 1924 for the, my research IMHO record breaker , century long period and twice in the 1990s , one of those missing ones the highest in 50 years, IMHO/research. At least the paper record of the 1924 tide-gauge survived and the exact fault and slippage dould be determined a century later, unlike modern electronic tide gauge crapouts, where you have to rely on newspaper reports, or witness recollections/photos and surveying, to reconstitute. My usual rambling stuff around the phrase "erroneous flood event return periods in multi-million pound flood prevention schemes" on historical marine flooding and lots of ancilliary stuff http://diverse.4mg.com/solent.htm -- Global sea level rise to 2100 from curve-fitted existing altimetry data http://diverse.4mg.com/slr.htm |
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