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Data Analysis

Data Analysis. The Concept of Weather Window The Features of Weather Window Seasonality Duration Probabilities of Total Available Window Selection of Work Boats. Weather Window. Threshold Wind Speed w and Wave Height Hs Duration. Seasonality. Probabilities of Weather Window.

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Data Analysis

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  1. Data Analysis • The Concept of Weather Window • The Features of Weather Window • Seasonality • Duration • Probabilities of Total Available Window • Selection of Work Boats

  2. Weather Window • Threshold Wind Speed w and Wave Height Hs • Duration

  3. Seasonality

  4. Probabilities of Weather Window • Joint Probability of Wind and Waves • Conditional Probability if Consider Available Duration • w: wind speed; Hs: wave height; subscript t: threshold

  5. The Impact from Seasonality • Spring, Summer-Autumn, Winter • One Condition: w = 6 m/s, Hs = 2 m

  6. The Impact from Threshold Duration

  7. Selection of Work Boats • 3 Categories of Work Boats • Large • Medium • Small

  8. Selection of Work Boats

  9. Selection of Work Boats

  10. For Johnston, Conclusion • The model we developed is able to capture the influence of seasonality and threshold duration; • Trends between seasons are similar between Irish Sea and Delaware coast except Irish sea has a harsher winter; • Small work boats are more vulnerable to sea conditions. They have longer working windows in US job for the milder sea state.

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