• Metadata catalogue
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Baltic Sea Mean Sea Level time series and trend from Observations Reprocessing

'''DEFINITION'''

The sea level ocean monitoring indicator has been presented in the Copernicus Ocean State Report #8. The sea level ocean monitoring indicator is derived from the DUACS delayed-time (DT-2024 version, “my” (multi-year) dataset used when available, “myint” (multi-year interim) used after) sea level anomaly maps from satellite altimetry based on a stable number of altimeters (two) in the satellite constellation. These products are distributed by the Copernicus Climate Change Service and the Copernicus Marine Service (SEALEVEL_GLO_PHY_CLIMATE_L4_MY_008_057).

The time series of area averaged anomalies correspond to the area average of the maps in the Baltic Sea weighted by the cosine of the latitude (to consider the changing area in each grid with latitude) and by the proportion of ocean in each grid (to consider the coastal areas). The time series are corrected from regional mean GIA correction (weighted GIA mean of a 27 ensembles model following Spada et Melini, 2019). The time series are adjusted for seasonal annual and semi-annual signals and low-pass filtered at 6 months. Then, the trends/accelerations are estimated on the time series using ordinary least square fit.

The trend uncertainty is provided in a 90% confidence interval. It is calculated as the weighted mean uncertainties in the region from Prandi et al., 2021. This estimate only considers errors related to the altimeter observation system (i.e., orbit determination errors, geophysical correction errors and inter-mission bias correction errors). The presence of the interannual signal can strongly influence the trend estimation considering to the altimeter period considered (Wang et al., 2021; Cazenave et al., 2014). The uncertainty linked to this effect is not considered.

'''CONTEXT'''

Change in mean sea level is an essential indicator of our evolving climate, as it reflects both the thermal expansion of the ocean in response to its warming and the increase in ocean mass due to the melting of ice sheets and glaciers (WCRP Global Sea Level Budget Group, 2018). At regional scale, sea level does not change homogenously. It is influenced by various other processes, with different spatial and temporal scales, such as local ocean dynamic, atmospheric forcing, Earth gravity and vertical land motion changes (IPCC WGI, 2021). The adverse effects of floods, storms and tropical cyclones, and the resulting losses and damage, have increased as a result of rising sea levels, increasing people and infrastructure vulnerability and food security risks, particularly in low-lying areas and island states (IPCC, 2022a). Adaptation and mitigation measures such as the restoration of mangroves and coastal wetlands, reduce the risks from sea level rise (IPCC, 2022b).

The Baltic Sea is a relatively small semi-enclosed basin with shallow bathymetry. Different forcings have been discussed to trigger sea level variations in the Baltic Sea at different time scales. In addition to steric effects, decadal and longer sea level variability in the basin can be induced by sea water exchange with the North Sea, and in response to atmospheric forcing and climate variability (e.g., the North Atlantic Oscillation; Gräwe et al., 2019).

'''KEY FINDINGS'''

Over the [1999/02/21 to 2023/12/31] period, the area-averaged sea level in the Baltic Sea rises at a rate of 4.5 ± 0.8 mm/year with an acceleration of 0.10 ± 0.07 mm/year2. This trend estimation is based on the altimeter measurements corrected from regional GIA correction (Spada et Melini, 2019) to consider the ongoing movement of land. The TOPEX-A is no longer included in the computation of regional mean sea level parameters (trend and acceleration) with version 2024 products due to potential drifts, and ongoing work aims to develop a new empirical correction. Calculation begins in February 1999 (the start of the TOPEX-B period).

'''DOI (product):'''

https://doi.org/10.48670/moi-00202

 
Citation proposal
. Baltic Sea Mean Sea Level time series and trend from Observations Reprocessing. https://services.mspdata.eu:/geonetwork/srv/api/records/69a6b688-f1d8-40c2-b420-e6234ff48b12

Simple

Alternate title
OMI_CLIMATE_SL_BALTIC_area_averaged_anomalies
Date ( Creation )
2023-11-30
Edition
3.4
Edition date
2025-06-24
Identifier
a78600a4-a280-47b5-8ddd-0dc8b5e9c9d9
Credit
E.U. Copernicus Marine Service Information

  Resource provider

SL-CLS-TOULOUSE-FR -  

Maintenance and update frequency
Annually
Other
P0M0D0H/P0M0D0H
Maintenance note
N/A
Maintenance and update frequency
Quarterly
GEMET - INSPIRE themes, version 1.0 ( Theme )
  • Oceanographic geographical features
Discipline ( Discipline )
  • satellite-observation
Climate and Forecast Standard Names ( parameter )
  • sea_surface_height_above_sea_level
Temporal scale ( temporal-scale )
  • multi-year
Area of benefit ( area-of-benefit )
  • coastal-marine-environment , weather-climate-and-seasonal-forecasting , marine-resources , marine-safety
Reference Geographical Areas ( reference-geographical-area )
  • baltic-sea
Processing level ( processing-level )
  • N/A
Model assimilation ( Theme )
  • 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
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
48cff25a-1e64-49d9-9dee-ab64a6476bbc
Association Type
Cross reference
Initiative Type
document
Aggregate Datasetindentifier
8aecafc5-273a-44d1-8d29-ab2fde271449
Association Type
Cross reference
Initiative Type
document
Aggregate Datasetindentifier
012d8275-a01e-4213-b73e-d911a6a4c6e3
Association Type
Cross reference
Initiative Type
document
Metadata language
eng
Topic category
  • Oceans
Description
bounding box
N
S
E
W


Vertical extent

Minimum value
0
Maximum value
0
Vertical CRS
  •   urn:ogc:def:crs:EPSG:5714
Supplemental Information
display priority: 53800
Unique resource identifier
Codespace
EPSG
Number of dimensions
2
Dimension name
Row
Dimension name
Column
Cell geometry
Area
Transformation parameter availability
false
Distribution format
  • NetCDF-4 ( )

Distributor

OnLine resource
omi_climate_sl_baltic_area_averaged_anomalies  

For accessing native data and Analysis-ready Cloud-optimized data services, consult this STAC metadata endpoint

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']")

Metadata

File identifier
69a6b688-f1d8-40c2-b420-e6234ff48b12   XML
Metadata language
English
Character set
UTF8
Hierarchy level
Series
Hierarchy level name
Copernicus Marine Service product specification
Date stamp
2025-04-23T07:38:36.429293Z
Metadata standard name
ISO 19139, MyOcean profile
Metadata standard version
0.2

  Point of contact

CMEMS  

Website
http://marine.copernicus.eu/  
 
 

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