Title

ODYSSEA Global Sea Surface Temperature Gridded Level 4 Daily Multi-Sensor Observations

Alternate title

SST_GLO_PHY_L4_NRT_010_043

Date (Creation)

2023-03-30

Edition date

2023-03-30

Citation identifier

ab6cae84-4cda-42d0-b021-20fde9ed08f9

Abstract

This dataset provide a times series of gap free map of Sea Surface Temperature (SST) foundation at high resolution on a 0.10 x 0.10 degree grid (approximately 10 x 10 km) for the Global Ocean, every 24 hours.

Whereas along swath observation data essentially represent the skin or sub-skin SST, the Level 4 SST product is defined to represent the SST foundation (SSTfnd). SSTfnd is defined within GHRSST as the temperature at the base of the diurnal thermocline. It is so named because it represents the foundation temperature on which the diurnal thermocline develops during the day. SSTfnd changes only gradually along with the upper layer of the ocean, and by definition it is independent of skin SST fluctuations due to wind- and radiation-dependent diurnal stratification or skin layer response. It is therefore updated at intervals of 24 hrs. SSTfnd corresponds to the temperature of the upper mixed layer which is the part of the ocean represented by the top-most layer of grid cells in most numerical ocean models. It is never observed directly by satellites, but it comes closest to being detected by infrared and microwave radiometers during the night, when the previous day's diurnal stratification can be assumed to have decayed.

The processing combines the observations of multiple polar orbiting and geostationary satellites, embedding infrared of microwave radiometers. All these sources are intercalibrated with each other before merging. A ranking procedure is used to select the best sensor observation for each grid point. An optimal interpolation is used to fill in where observations are missing.

'''DOI (product) :'''

https://doi.org/10.48670/mds-00321

Credit

E.U. Copernicus Marine Service Information

Point of contact

Organisation name	Individual name	Electronic mail address	Role
SST-IFREMER-BREST-FR			Production Unit

Maintenance and update frequency

Daily

Other

/

Maintenance note

12:00

GEMET - INSPIRE themes, version 1.0

• Oceanographic geographical features

Discipline

• satellite-observation

Climate and Forecast Standard Names

• sea_surface_temperature

Temporal scale

• near-real-time

Area of benefit

• marine-safety
• marine-resources
• coastal-marine-environment
• weather-climate-and-seasonal-forecasting

Reference Geographical Areas

• global-ocean

Processing level

• Level 4

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 legal constraints

No limitations on public access

Aggregate Datasetindentifier

21fd7bbf-6995-41c6-8ca7-1f02a57fa47c

Association Type

Cross reference

Initiative Type

Document

Aggregate Datasetindentifier

d1a65573-ea3a-43d8-9f5c-6bf48261d5a2

Association Type

Cross reference

Initiative Type

Document

Aggregate Datasetindentifier

c7aa9cda-4e49-4129-8152-85edc59ecc6a

Association Type

Cross reference

Initiative Type

Document

Language

eng

Topic category

• Oceans

Description

bounding box

Begin date

2021-01-01

Supplemental Information

display priority: 12010

Reference system identifier

EPSG / WGS 84 (EPSG:4326)

Number of dimensions

2

Dimension name

Row

Resolution

0.1  degree

Dimension name

Column

Resolution

0.1  degree

Cell geometry

Area

Transformation parameter availability

Distribution format

Name	Version
NetCDF-4

OnLine resource

Protocol	Linkage	Name
WWW:STAC	http://stac.marine.copernicus.eu/metadata/SST_GLO_PHY_L4_NRT_010_043/cmems_obs-sst_glo_phy_nrt_l4_P1D-m_202303/dataset.stac.json	cmems_obs-sst_glo_phy_nrt_l4_P1D-m
OGC:WMTS	https://wmts.marine.copernicus.eu/teroWmts/SST_GLO_PHY_L4_NRT_010_043/cmems_obs-sst_glo_phy_nrt_l4_P1D-m_202303	cmems_obs-sst_glo_phy_nrt_l4_P1D-m

Hierarchy level

Series

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: daily mean

Descriptor

vertical level number: 1

Included with dataset

Feature types

Grid

Metadata

File identifier

ab6cae84-4cda-42d0-b021-20fde9ed08f9

Metadata language

English

Hierarchy level

Series

Hierarchy level name

Copernicus Marine Service product specification

Date stamp

2025-04-22T08:57:32.077954Z

Metadata standard name

ISO 19139, MyOcean profile

Metadata standard version

0.2

Metadata author

Organisation name	Individual name	Electronic mail address	Role
CMEMS		servicedesk.cmems@mercator-ocean.eu	Local service desk