• Metadata catalogue
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Baltic Sea Subsurface salinity trend

'''DEFINITION'''

The subsurface salinity trends have been derived from regional reanalysis and forecast modelling results of the CMEMS BAL MFC group for the Baltic Sea (product references BALTICSEA_REANALYSIS_PHY_003_011). The salinity trend has been obtained through a linear fit for each time series of horizontally averaged (13 °E - 31 °E and 53 °N - 66 °N; excluding the Skagerrak strait) annual salinity and at each depth level (Mulet et al., 2018).

'''CONTEXT'''

The Baltic Sea is a brackish semi-enclosed sea in North-Eastern Europe. The surface salinity varies horizontally from ~10 near the Danish Straits down to ~2 at the northernmost and easternmost sub-basins of the Baltic Sea. The halocline, a vertical layer with rapid changes of salinity with depth that separates the well-mixed surface layer from the weakly stratified layer below, is located at the depth range of 60-80 meters (Matthäus, 1984). The bottom layer salinity below the halocline depth varies from 15 in the south down to 3 in the northern Baltic Sea (Väli et al., 2013). The long-term salinity is determined by net precipitation and river discharge as well as saline water inflows from the North Sea (BACCII Author Team, 2015). Long-term salinity decrease may reduce the occurrence and biomass of the Fucus vesiculosus - Idotea balthica association/symbiotic aggregations (Kotta et al., 2019). Changes in salinity and oxygen content affect the survival of the Baltic cod eggs (Raudsepp et al, 2019; von Dewitz et al., 2018).

'''CMEMS KEY FINDINGS'''

The subsurface salinity over the 1993-2020 period shows no trend in the surface layer of 40-m. Then, the trend increases monotonically until the depth of 80-m, where it reaches the value of about 0.04 per year. Below that depth the salinity trend is uniform within the uncertainty limits.

'''DOI (product):'''

https://doi.org/10.48670/moi-00207

 
Citation proposal
Vibeke HUESS (BAL-DMI-COPENHAGEN-DK). Baltic Sea Subsurface salinity trend. https://services.mspdata.eu:/geonetwork/srv/api/records/ac5e6323-76fb-4b8d-9e65-9bf4bd4bd5b4

Simple

Alternate title
BALTIC_OMI_TEMPSAL_Stz_trend
Date ( Creation )
2019-11-28
Edition
3.4
Edition date
2019-11-28
Identifier
a78600a4-a280-47b5-8ddd-0dc8b5e9c9d9
Credit
E.U. Copernicus Marine Service Information

  Custodian

BAL-DMI-COPENHAGEN-DK - Vibeke HUESS  

  Originator

BAL-TTU-TALLINN-EE - Priidik Lagemaa  

  Point of contact

BAL-SMHI-NORRKOPING-SE - BAL Service Desk  

  Resource provider

BAL-SMHI-NORRKOPING-SE - Priidik Lagemaa  

  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 ( Theme )
  • Oceanographic geographical features
Discipline ( Discipline )
  • numerical-model
Climate and Forecast Standard Names ( parameter )
  • sea_water_salinity_trend , confidence interval
Temporal scale ( temporal-scale )
  • multi-year
Area of benefit ( area-of-benefit )
  • coastal-marine-environment , weather-climate-and-seasonal-forecasting , marine-safety , marine-resources
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
Aggregate Datasetindentifier
76201984-5266-4971-ade0-7970146fa5a8
Association Type
Cross reference
Initiative Type
document
Aggregate Datasetindentifier
adb0e5fc-473e-40f9-aee1-9b710c743ac8
Association Type
Cross reference
Initiative Type
document
Aggregate Datasetindentifier
1993e47d-48e4-4ae6-8981-ae51114bf2a7
Association Type
Cross reference
Initiative Type
document
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
Metadata language
eng
Topic category
  • Oceans
Description
bounding box
N
S
E
W


Vertical extent

Minimum value
-400
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
baltic_omi_tempsal_Stz_area_averaged_trend  
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
ac5e6323-76fb-4b8d-9e65-9bf4bd4bd5b4   XML
Metadata language
English
Character set
UTF8
Hierarchy level
Series
Hierarchy level name
Copernicus Marine Service product specification
Date stamp
2021-12-10T14:02:27
Metadata standard name
ISO 19139, MyOcean profile
Metadata standard version
0.2

  Point of contact

CMEMS  

Website
http://marine.copernicus.eu/  
 
 

  Overviews


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