Northeast Atlantic Ocean - DIVA 4D 6-year analysis of Water body chlorophyll-a 1972/2020 v2021

Moving 6-year analysis of Chlorophyll-a at Atlantic Sea for each season.

- winter: January-March,

- spring: April-June,

- summer: July-September,

- autumn: October-December

Every year of the time dimension corresponds to the 6-year centred average of each season. 6-year periods span from 1972-1977 until 2012-2020. Observational data span from 1972 to 2020.

Depth range (IODE standard depths): -300.0, -250.0, -200.0, -150.0, -125.0, -100.0, -75.0, -50.0,-40.0, -30.0, -20.0, -10.0, -5.0, -0.0

Data Sources: observational data from SeaDataNet/EMODNet Chemistry Data Network.

Description of DIVA analysis: Geostatistical data analysis by DIVA (Data-Interpolating Variational Analysis) tool. GEBCO 1min topography is used for the contouring preparation. Analyzed filed masked using relative error threshold 0.3 and 0.5 DIVA settings. Correlation length was optimized and filtered vertically and a seasonally-averaged profile was used. Signal to noise ratio was fixed to 1. Logarithmic transformation applied to the data prior to the analysis. Background field: the data mean value is subtracted from the data. Detrending of data: no, Advection constraint applied: no.

Units: mg/m^3

Simple

Alternate title
Atlantic-Water_body_chlorophyll-a-v2021-ANA
Date (Creation)
2021-04-09
Edition
2.0
Identifier
ce474bda-7eba-11e8-84a3-40a8f051e8d0
Credit
EMODnet Chemistry
Author
  IFREMER, SISMER, Scientific Information Systems for the SEA
IFREMER Centre de Bretagne ZI Pointe du diable CS 10070 , PLOUZANE , 29280 , France
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Originator
  Angers University, Laboratory of current and fossil bio-indicators, UMR CNRS 6112 LPG-BIAF
UFR Sciences Université d'Angers 2, Bd Lavoisier , ANGERS cedex 01 , 49045 , France
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Originator
  Aquitaine Observatory of Sciences of the Universe, University of Bordeaux (OASU)
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Originator
  British Oceanographic Data Centre
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  COM, Physical and Biogeochemical Oceanography Laboratory (LUMINY)
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  Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory
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  EPOC, Geology and Oceanography Department
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  Environment Resources Laboratory Morbihan Pays De La Loire - La Trinite
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  IEO, Murcia Oceanographic Centre
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  IEO, Spanish Oceanographic Institute
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  Southampton Oceanography Centre
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GEMET - INSPIRE themes, version 1.0
Parameter Discovery Vocabulary (P02)
EMODnet Chemistry aggregated parameter names
EMODnet Chemistry chemical groups
SeaVoX salt and fresh water body gazetteer
Matrix Categories
Theme
  • EMODnet Chemistry
Use limitation
The data are available under the Creative Commons Attribution 4.0 International Public License (https://creativecommons.org/licenses/by/4.0/).
Access constraints
Other restrictions
Other constraints
Usage is subject to mandatory citation: "This resource was generated by EMODnet Chemistry under the support of DG MARE Call for Tender EASME/2019/OP/0003-lot4."
Distance
0.1  degree
Metadata language
eng
Topic category
  • Oceans
Description
bounding box
N
S
E
W
thumbnail


Begin date
1972-07-10T09:30:56
End date
2020-07-07T11:03:45

Vertical extent

Minimum value
-300.0
Maximum value
0
Vertical CRS
Reference system identifier
EPSG / WGS 84 (EPSG:4326)
Number of dimensions
2
Dimension name
Vertical
Dimension size
14
Dimension name
Time
Resolution
365  day
Cell geometry
Area
Transformation parameter availability
No
Distribution format
  • Climate and Forecast NetCDF ( 1.6 )

OnLine resource
By_sea_regions/Northeast_Atlantic_Ocean/Water_body_chlorophyll-a.4Danl.nc*Water_body_chlorophyll-a_L1 ( OGC:WMS )

WMS layer for Water_body_chlorophyll-a masked using relative error threshold 0.3

OnLine resource
point:By_sea_regions/Northeast_Atlantic_Ocean/Water_body_chlorophyll-a.4Danl.nc*obsid ( OGC:WMS )

WMS layer for Observations

OnLine resource
EMODnet Map Viewer ( WWW:LINK )

EMODnet Map Viewer

OnLine resource
Digital Object Identifier (DOI) ( DOI )
OnLine resource
OPeNDAP ( WWW:DOWNLOAD-1.0-link--download )

OPeNDAP web page about the dataset Water_body_chlorophyll-a.4Danl.nc

OnLine resource
Direct Download (NetCDF) ( WWW:DOWNLOAD-1.0-link--download )

Direct Download (NetCDF)

Hierarchy level
Series

Conformance result

Date (Publication)
2010-12-08
Explanation
See the referenced specification
Statement
The original datasets can be searched and downloaded from EMODnet Chemistry Chemistry CDI Data and Discovery Access Service: https://emodnet-chemistry.maris.nl/search
Included with dataset
No
Feature types
surface
File identifier
ce474bda-7eba-11e8-84a3-40a8f051e8d0 XML
Metadata language
English
Character set
UTF8
Hierarchy level
Series
Hierarchy level name
Product record
Date stamp
2025-02-21T09:30:48.51126Z
Metadata standard name
ISO 19115:2003/19139 - EMODNET - SDN
Metadata standard version
1.0
Point of contact
  EMODnet Chemistry -
https://emodnet.ec.europa.eu/en/chemistry
 
 

Overviews

overview

Spatial extent

N
S
E
W
thumbnail


Keywords

EMODnet Chemistry
GEMET - INSPIRE themes, version 1.0
Oceanographic geographical features

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Not available