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[ARCHIVE] Global Surface Chlorophyll Concentration from Satellite observations (daily average) Reprocessed L3 (ESA-CCI)

'''This product has been archived'''

For operationnal and online products, please visit https://marine.copernicus.eu

'''Short description:'''

For the Global ocean, the ESA Ocean Colour CCI surface Chlorophyll (mg m-3, 4 km resolution) using the OC-CCI recommended chlorophyll algorithm is made available in CMEMS format. Phytoplankton functional types (PFT) products provide daily chlorophyll concentrations of three size-classes, consisting of nano, pico and micro-phytoplankton. L3 products are daily files, while the L4 are monthly composites. ESA-CCI data are provided by Plymouth Marine Laboratory at 4km resolution. These are processed using the same in-house software as in the operational processing. Standard masking criteria for detecting clouds or other contamination factors have been applied during the generation of the Rrs, i.e., land, cloud, sun glint, atmospheric correction failure, high total radiance, large solar zenith angle (actually a high air mass cutoff, but approximating to 70deg zenith), coccolithophores, negative water leaving radiance, and normalized water leaving radiance at 555 nm 0.15 Wm-2 sr-1 (McClain et al., 1995). Ocean colour technique exploits the emerging electromagnetic radiation from the sea surface in different wavelengths. The spectral variability of this signal defines the so called ocean colour which is affected by the presence of phytoplankton. By comparing reflectances at different wavelengths and calibrating the result against in-situ measurements, an estimate of chlorophyll content can be derived. A detailed description of calibration & validation is given in the relevant QUID, associated validation reports and quality documentation.

'''Processing information:'''

ESA-CCI data are provided by Plymouth Marine Laboratory at 4km resolution. These are processed using the same in-house software as in the operational processing. The entire CCI data set is consistent and processing is done in one go. Both OC CCI and the REP product are versioned. Standard masking criteria for detecting clouds or other contamination factors have been applied during the generation of the Rrs, i.e., land, cloud, sun glint, atmospheric correction failure, high total radiance, large solar zenith angle (actually a high air mass cutoff, but approximating to 70deg zenith), coccolithophores, negative water leaving radiance, and normalized water leaving radiance at 555 nm 0.15 Wm-2 sr-1 (McClain et al., 1995).

'''Description of observation methods/instruments:'''

Ocean colour technique exploits the emerging electromagnetic radiation from the sea surface in different wavelengths. The spectral variability of this signal defines the so called ocean colour which is affected by the presence of phytoplankton. By comparing reflectances at different wavelengths and calibrating the result against in-situ measurements, an estimate of chlorophyll content can be derived.

'''Quality / Accuracy / Calibration information:'''

Detailed description of cal/val is given in the relevant QUID, associated validation reports and quality documentation.'''

'''Suitability, Expected type of users / uses:'''

This product is meant for use for educational purposes and for the managing of the marine safety, marine resources, marine and coastal environment and for climate and seasonal studies.

'''DOI (product) :'''

https://doi.org/10.48670/moi-00097

Simple

Alternate title
OCEANCOLOUR_GLO_CHL_L3_REP_OBSERVATIONS_009_065
Date (Creation)
2009-09-30
Edition date
2021-04-26
Identifier
9f33fbde-0188-4b8a-92fa-bfc461d1f485
Credit
E.U. Copernicus Marine Service Information
Point of contact
  OC-CNR-ROMA-IT - Emanuele BÖHM
Custodian
  OC-CNR-ROMA-IT - Rosalia SANTOLERI
Originator
  OC-PML-PLYMOUTH-UK - Ben CALTON
Resource provider
  OC-PML-PLYMOUTH-UK - Ben CALTON
Distributor
  OC-CNR-ROMA-IT - Javier CONCHA
Maintenance and update frequency
Irregular
Other
/
Maintenance note
N/A
GEMET - INSPIRE themes, version 1.0
  • Oceanographic geographical features
Discipline
  • satellite-observation
Climate and Forecast Standard Names
  • mass_concentration_of_picophytoplankton_expressed_as_chlorophyll_in_sea_water
  • mass_concentration_of_microphytoplankton_expressed_as_chlorophyll_in_sea_water
  • mass_concentration_of_nanophytoplankton_expressed_as_chlorophyll_in_sea_water
  • uncertainties
  • mass_concentration_of_chlorophyll_a_in_sea_water
Temporal scale
  • multi-year
Area of benefit
  • marine-safety
  • marine-resources
  • coastal-marine-environment
  • weather-climate-and-seasonal-forecasting
Reference Geographical Areas
  • global-ocean
Processing level
  • Level 3
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
Aggregate Datasetindentifier
7bdc830b-6321-4ffb-ae76-8707256c6d03
Association Type
Cross reference
Initiative Type
document
Aggregate Datasetindentifier
aeb41fa3-3b89-4b04-b484-1e9c63e1d44b
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
Metadata language
eng
Topic category
  • Oceans
Description
bounding box
N
S
E
W
thumbnail


Begin date
1997-09-04

Vertical extent

Minimum value
0
Maximum value
0
Vertical CRS
  • urn:ogc:def:crs:EPSG:5714
Supplemental Information
display priority: 11060
Reference system identifier
EPSG / WGS 84 / Plate Carree (EPSG:32662)
Number of dimensions
2
Dimension name
Row
Resolution
4  km
Dimension name
Column
Resolution
4  km
Cell geometry
Area
Transformation parameter availability
No
Distribution format
  • NetCDF-4 ( Classic model )

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: daily mean
Descriptor
vertical level number: 1
Included with dataset
No
Feature types
Grid
File identifier
9f33fbde-0188-4b8a-92fa-bfc461d1f485 XML
Metadata language
English
Hierarchy level
Series
Hierarchy level name
Copernicus Marine Service product specification
Date stamp
2022-06-28T14:42:41.34Z
Metadata standard name
ISO 19139, MyOcean profile
Metadata standard version
0.2
Point of contact
  CMEMS
http://marine.copernicus.eu/
 
 

Overviews

overview
OCEANCOLOUR_GLO_CHL_L3_REP_OBSERVATIONS_009_065

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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Associated resources

Not available


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