North West Shelf Significant Wave Height extreme from Observations Reprocessing
'''DEFINITION'''
The OMI_EXTREME_WAVE_NORTHWESTSHELF_swh_mean_and_anomaly_obs indicator is based on the computation of the 99th and the 1st percentiles from in situ data (observations). It is computed for the variable significant wave height (swh) measured by in situ buoys. The use of percentiles instead of annual maximum and minimum values, makes this extremes study less affected by individual data measurement errors. The percentiles are temporally averaged, and the spatial evolution is displayed, jointly with the anomaly in the target year. This study of extreme variability was first applied to sea level variable (Pérez Gómez et al 2016) and then extended to other essential variables, sea surface temperature and significant wave height (Pérez Gómez et al 2018).
'''CONTEXT'''
Projections on Climate Change foresee a future with a greater frequency of extreme sea states (Stott, 2016; Mitchell, 2006). The damages caused by severe wave storms can be considerable not only in infrastructure and buildings but also in the natural habitat, crops and ecosystems affected by erosion and flooding aggravated by the extreme wave heights. In addition, wave storms strongly hamper the maritime activities, especially in harbours. These extreme phenomena drive complex hydrodynamic processes, whose understanding is paramount for proper infrastructure management, design and maintenance (Goda, 2010).
'''CMEMS KEY FINDINGS'''
The mean 99th percentiles showed in the area present a wide range from 2.5 meters in the English Channel with 0.3m of standard deviation (std), 3-5m around Helgoland Bight with 0.3-0.5m of std, 4 meters in the Skagerrak Strait with 0.5m of std, 6m in the central North Sea with 0.3m of std to 8-9 meters in the North of the British Isles with 0.5-0.75m of std.
Results for this year show a general trend of positive anomalies with slight or moderate values around the range of the std in all the area except in the North of the British Isles where the positive anomaly is appreciable, reaching +1m. Severe storms developed in the Atlantic during 2020 reached the British Isles, like Storm Brendan in January, Storm Dennis in February or Storm Bella in December. These storms produced waves with significant wave height over 10 m recorded by the buoys in the area.
'''DOI (product):'''
Simple
- Alternate title
- OMI_EXTREME_WAVE_NORTHWESTSHELF_swh_mean_and_anomaly_obs
- Date (Creation)
- 2023-11-30
- Edition
- 3.4
- Edition date
- 2023-11-30
- Identifier
- ef932fc0-04e7-4a25-b7b2-08a2d85d4039
- Credit
- E.U. Copernicus Marine Service Information
- Maintenance and update frequency
- Annually
- Other
- P0M0D0H/P0M0D0H
- Maintenance note
- N/A
- GEMET - INSPIRE themes, version 1.0
- Use limitation
- See Copernicus Marine Environment Monitoring Service Data commitments and licence at: http://marine.copernicus.eu/web/27-service-commitments-and-licence.php
- Access constraints
- Other restrictions
- Use constraints
- License
- Other constraints
- No limitations on public access
- Date (Creation)
- 2019-05-08
- Association Type
- Cross reference
- Initiative Type
- reference
- Date (Creation)
- 2019-05-08
- Association Type
- Cross reference
- Initiative Type
- reference
- Date (Creation)
- 2019-05-08
- Association Type
- Cross reference
- Initiative Type
- reference
- Date (Creation)
- 2019-05-08
- Association Type
- Cross reference
- Initiative Type
- reference
- Date (Creation)
- 2019-05-08
- Association Type
- Cross reference
- Initiative Type
- reference
- Aggregate Datasetindentifier
- 2328111a-50ac-481b-82f0-40bb842c14e5
- Association Type
- Cross reference
- Initiative Type
- document
- Aggregate Datasetindentifier
- a6160dd4-3477-4b07-aac3-752f3868dd5b
- Association Type
- Cross reference
- Initiative Type
- document
- Aggregate Datasetindentifier
- 2512e19a-6eb8-47c2-ba70-16347258bcae
- Association Type
- Cross reference
- Initiative Type
- document
- Metadata language
- eng
- Topic category
-
- Oceans
- Description
- bounding box
- Begin date
- 2000-01-01
- End date
- 2020-12-31
Vertical extent
- Supplemental Information
- display priority: 99999
- Reference system identifier
- EPSG / WGS 84 (EPSG:4326)
- Number of dimensions
- 2
- Dimension name
- Row
- Dimension name
- Column
- Cell geometry
- Area
- Transformation parameter availability
- No
- Distribution format
-
-
NetCDF-4
(
)
-
NetCDF-4
(
)
Distributor
- OnLine resource
-
omi_extreme_wave_northwestshelf_swh_mean_and_anomaly_obs
(
WWW:STAC
)
For accessing native data and Analysis-ready Cloud-optimized data services, consult this STAC metadata endpoint
- OnLine resource
- omi_extreme_wave_northwestshelf_swh_mean_and_anomaly_obs ( OGC:WMTS )
- Hierarchy level
- Series
Conformance result
- Date (Publication)
- 2010-12-08
- Explanation
- See the referenced specification
- Statement
- The myOcean products depends on other products for production or validation. The detailed list of dependencies is given in ISO19115's aggregationInfo (ISO19139 Xpath = "gmd:MD_Metadata/gmd:identificationInfo/gmd:aggregationInfo[./gmd:MD_AggregateInformation/gmd:initiativeType/gmd:DS_InitiativeTypeCode/@codeListValue='upstream-validation' or 'upstream-production']")
- Attribute description
- observation
- Content type
- Physical measurement
- Descriptor
- vertical level number: 1
- Included with dataset
- No
- Feature types
- Grid
- File identifier
- 89604532-a6ae-45e8-9478-64d49df71a57 XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Series
- Hierarchy level name
- Copernicus Marine Service product specification
- Date stamp
- 2024-03-26T11:13:22.631Z
- Metadata standard name
- ISO 19139, MyOcean profile
- Metadata standard version
- 0.2