Wind and waves in extreme hurricanes

Seawinds Improved Ocean Vector Wind Retrievals in Hurricanes

The most pressing issue for the Ku-band scatterometer is associated with the measurement of ocean surface winds in tropical cyclones in the presence of precipitation, which can significantly degrade the wind vector retrieval. Furthermore, at high wind speeds (> 32 m/s), the measurements suffer from radar backscatter saturation effects. Since the spatial resolution of satellite scatterometer and...

Probabilistic Models for Directionless Wind Speeds in Hurricanes

Extreme Waves and Ship Design

Recent research has demonstrated that extreme waves, waves with crest to trough heights of 20 to 30 meters, occur more frequently than previously thought. Also, over the past several decades, a surprising number of large commercial vessels have been lost in incidents involving extreme waves. Many of the victims were bulk carriers. Current design criteria generally consider significant wave heig...

Taming hurricanes with arrays of o shore wind turbines

Hurricanes are causing increasing damage to many coastal regions worldwide1,2. O shore wind turbines can provide substantial clean electricity year-round, but can they alsomitigate hurricane damage while avoiding damage to themselves? This study uses an advanced climate–weather computer model that correctly treats the energy extraction of wind turbines3,4 to examine this question. It finds that...

Wind Simulation for Extreme and Fatigue Loads

Målinger af atmosfærisk turbulens afviger fra en Gaussisk proces, specielt hvad ang̊ar hastighedsændringer over sm̊a tidsskridt, hvor halerne p̊a sandsynlighedsfordelingen snarere er ekspotentielle end Gaussiske. Tælleprincipperne for ekstreme hændelser og eksistensen af kaskader af hændelser gennemg̊as. Empiriske ekstremstatistikker findes i overensstemmelse med Rices overskridelsesteori, n̊ar ford...