• Catalogue PIGMA
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Global anomaly map of Thermosteric Sea Level

'''DEFINITION'''

The temporal evolution of thermosteric sea level in an ocean layer (here: 0-700m) is obtained from an integration of temperature driven ocean density variations, which are subtracted from a reference climatology (here 1993-2014) to obtain the fluctuations from an average field. The annual mean thermosteric sea level of the year 2017 is substracted from a reference climatology (1993-2014) at each grid point to obtain a global map of thermosteric sea level anomalies in the year 2017, expressed in millimeters per year (mm/yr).

'''CONTEXT'''

Most of the interannual variability and trends in regional sea level is caused by changes in steric sea level (Oppenheimer et al., 2019). At mid and low latitudes, the steric sea level signal is essentially due to temperature changes, i.e. the thermosteric effect (Stammer et al., 2013, Meyssignac et al., 2016). Salinity changes play only a local role. Regional trends of thermosteric sea level can be significantly larger compared to their globally averaged versions (Storto et al., 2018). Except for shallow shelf sea and high latitudes (> 60° latitude), regional thermosteric sea level variations are mostly related to ocean circulation changes, in particular in the tropics where the sea level variations and trends are the most intense over the last two decades.

'''CMEMS KEY FINDINGS'''

Higher-than-average thermosteric sea level is reported over most areas of the global ocean and the European regional seas in 2018. In some areas – e.g. the western boundary current regions of the Pacific and Atlantic Ocean in both hemispheres reach values of more than 0.2 m. There are two areas of lower-than-average thermosteric sea level, which stand out from the generally higher-than-average conditions: the western tropical Pacific, and the subpolar North Atlantic. The latter is linked to the so called “North Atlantic cold event” which persists since a couple of years (Dubois et al., 2018). However, its signature has significantly reduced compared to preceding years.

Simple

Alternate title
GLOBAL_OMI_SL_thsl_anomalies
Date (Creation)
2020-06-17
Edition
3.4
Edition date
2020-06-17
Identifier
a0b71e7b-4a71-43a6-a5c1-8b5bb52ae7fe
Credit
E.U. Copernicus Marine Service Information
Custodian
  GLO-MERCATOR-TOULOUSE-FR - Yann Drillet
Originator
  GLO-MERCATOR-TOULOUSE-FR - Karina Von Schuckmann
Point of contact
  GLO-MERCATOR-TOULOUSE-FR - GLO Service Desk
Resource provider
  GLO-MERCATOR-TOULOUSE-FR - Renaud Dussurget
Distributor
  MOI-OMI-SERVICE - MOI-OMI-SERVICE
Maintenance and update frequency
Annually
Other
P0M0D0H/P0M0D0H
Maintenance note
N/A
GEMET - INSPIRE themes, version 1.0
  • Oceanographic geographical features
Discipline
  • satellite-observation
  • in-situ-observation
  • numerical-model
Temporal scale
  • multi-year
Area of benefit
  • coastal-marine-environment
  • weather-climate-and-seasonal-forecasting
  • marine-safety
  • marine-resources
Reference Geographical Areas
  • global-ocean
Processing level
  • N/A
Model assimilation
  • Not Applicable
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
85455256-a7d0-4b5d-8f57-deb970091cd1
Association Type
Cross reference
Initiative Type
document
Date (Creation)
2019-05-08
Association Type
Cross reference
Initiative Type
reference
Metadata language
eng
Topic category
  • Oceans
Description
bounding box
N
S
E
W
thumbnail


Begin date
1901-01-01
End date
1901-01-01

Vertical extent

Minimum value
0
Maximum value
0.0
Vertical CRS
  • urn:ogc:def:crs:EPSG:5714
Supplemental Information
display priority: 50500
Reference system identifier
EPSG / WGS 84 (EPSG:4326)
Number of dimensions
2
Dimension name
Row
Resolution
0.25  degree
Dimension name
Column
Resolution
0.25  degree
Cell geometry
Area
Transformation parameter availability
No
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
temporal resolution: annual mean
Descriptor
vertical level number: 1
Included with dataset
No
Feature types
Grid
File identifier
059674c6-4abb-4899-acea-3c17f1b04582 XML
Metadata language
English
Character set
UTF8
Hierarchy level
Series
Hierarchy level name
Copernicus Marine Service product specification
Date stamp
2021-07-19T09:55:48
Metadata standard name
ISO 19139, MyOcean profile
Metadata standard version
0.2
Point of contact
  CMEMS
http://marine.copernicus.eu/
 
 

Overviews

overview

Spatial extent

N
S
E
W
thumbnail


Keywords

GEMET - INSPIRE themes, version 1.0
Oceanographic geographical features
Model assimilation
Not Applicable

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