North West Shelf Mean Sea Level extreme from Observations Reprocessing
'''DEFINITION'''
The OMI_EXTREME_SL_NORTHWESTSHELF_slev_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 sea level measured by tide gauges along the coast. The use of percentiles instead of annual maximum and minimum values, makes this extremes study less affected by individual data measurement errors. The annual percentiles referred to annual mean sea level are temporally averaged and their spatial evolution is displayed in the dataset northwestshelf_omi_sl_extreme_var_slev_mean_and_anomaly_obs, 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'''
Sea level is one of the Essential Ocean Variables most affected by climate change. Global mean sea level rise has accelerated since the 1990’s (Abram et al., 2019, Legeais et al., 2020), due to the increase of ocean temperature and mass volume caused by land ice melting (WCRP, 2018). Basin scale oceanographic and meteorological features lead to regional variations of this trend that combined with changes in the frequency and intensity of storms could also rise extreme sea levels up to one metre by the end of the century (Vousdoukas et al., 2020). This will significantly increase coastal vulnerability to storms, with important consequences on the extent of flooding events, coastal erosion and damage to infrastructures caused by waves.
'''CMEMS KEY FINDINGS'''
The completeness index criteria is fulfilled in this region by 23 stations, a significant increase with respect to those used in 2019 (only 6). Most of these new stations belong to UK and Denmark, and their reprocessed timeseries are now provided in product INSITU_GLO_PHY_SSH_DISCRETE_MY_013_053. The mean 99th percentiles present a large spatial variability related to the tidal pattern, ranging from the 3.08 m and 3.38 m above mean sea level in Immingan (East England) and Calais (France, English Channel) respectively, to 0.59 m above mean sea level in Aarhus (Denmark). The standard deviation ranges between 3 and 8 cm. There is a clear positive anomaly of 99th percentiles in 2020 for most of the stations, reaching 11 cm in Kungsvik (Sweden) and Ullapool (Scotland). Null or very small negative anomalies are only observed at two stations in the southeastern coast of England.
'''DOI (product):'''
Simple
- Alternate title
- OMI_EXTREME_SL_NORTHWESTSHELF_slev_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
- Date (Creation)
- 2019-05-08
- Association Type
- Cross reference
- Initiative Type
- reference
- Aggregate Datasetindentifier
- 47419bab-6615-4c03-91c9-e0536c057ec2
- Association Type
- Cross reference
- Initiative Type
- document
- Aggregate Datasetindentifier
- 1f35bab7-6bd7-476b-ae6b-8c19f625a3f3
- Association Type
- Cross reference
- Initiative Type
- document
- Aggregate Datasetindentifier
- 01dcb6fc-d179-439a-b011-66a401740f53
- Association Type
- Cross reference
- Initiative Type
- document
- Metadata language
- eng
- Topic category
-
- Oceans
- Description
- bounding box
- Begin date
- 1993-01-01
- 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_sl_northwestshelf_slev_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_sl_northwestshelf_slev_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
- d9e03e30-e39f-4af5-9063-984ddf0ad43e XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Series
- Hierarchy level name
- Copernicus Marine Service product specification
- Date stamp
- 2024-03-26T11:05:00.204Z
- Metadata standard name
- ISO 19139, MyOcean profile
- Metadata standard version
- 0.2