Number of days when wind speed exceeded storm force (Beaufort Scale 10) in 2015

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12
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14 Oct 2016

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The ocean storm index estimates the number of days in a year when wind speeds exceed gale and storm force on the Beaufort Scale. In a gale, sea conditions are rough and waves can be over six metres high. In a storm, waves can be over 10 metres high. To put this into context, on land a near gale would make walking difficult, and a storm would cause some damage to roofs, chimneys, and trees. Climate change could lead to changes in the frequency and intensity of storms. More frequent and intense storms will likely be a stressor for habitats and species.
The ocean storm index estimates the number of days that wind speeds exceed gale and storm force on the Beaufort Scale. The Beaufort Scale is a widely used international classification that rates sea conditions from 0 (calm) to 12 (hurricane). We report on estimated wind speeds broken down to:
- gales – measure 8 on the scale, have rough sea conditions with wind speeds of approximately 62–74 km per hour and wave heights of 5.5 metres
- storms – measure 10 on the scale, have wind speeds of approximately 89–102 km per hour and wave heights of 9–11.5 metres (McDonald & Parsons, 2016).
This dataset relates to the number of days when wind speed exceeded storm force (Beaufort Scale 10) in 2015.

Layer ID 53464
Data type Grid
Resolution About 47632.000m
Services Raster Query API, Catalog Service (CS-W), data.govt.nz Atom Feed

Gorman (2016) data

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385
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23 Oct 2016

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Document ID12726
File namegorman-2016-data.zip
TypeZIP
Size32.7 MB

Gorman 2016 Extreme wave indices for New Zealand coastal and oceanic waters

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693
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23 Oct 2016

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87
Document ID12722
File namegorman-2016-extreme-wave-indices-for-new-zealand-coastal-and-oceanic-waters.pdf
TypePDF
Size1.98 MB

Ocean acidity trend statistics xlsx

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465
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06 Oct 2015

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Document ID11429
File nameocean-acidity-trend-statistics-xlsx.xlsx
TypeXLSX
Size12.1 KB

Ocean storms report geotiffs

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493
4
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21 Oct 2016

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Document ID12719
File nameocean-storms-report-geotiffs.zip
TypeZIP
Size478 KB

McDonald, A & Parsons, S (2016). Ocean storm index. Prepared for the Ministry of the Environment. Christchurch: Department of Physics and Astronomy, University of Canterbury.

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639
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19 Oct 2016

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Document ID12660
File namemcdonald-a-parsons-s-2016-ocean-storm-index-prepared-for-the-ministry-of-the-environment-christchurch-department-of-physics-and-astronomy-university-of-canterbury.pdf
TypePDF
Size6.68 MB
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