Northeast Atlantic Ocean - DIVAnd 4D seasonal 6-year average analysis of Water body chlorophyll-a 1971/2021 v2023

Moving 6-year analysis of Water body chlorophyll-a in the NorthEast Atlantic 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 1971/1976 until 2016/2021. Observation data span from 1971 to 2021.

High-frequency observation trails were filtered to a 3h temporal resolution.

Depth levels (IODE standard depths): [0.0, 5.0, 10.0, 20.0, 30.0, 40.0, 50.0, 75.0, 100.0, 125.0, 150.0, 200.0, 250.0, 300.0].

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

Descrption of DIVAnd analysis: the computation was done with DIVAnd (Data-Interpolating Variational Analysis in n dimensions), version 2.7.4, using GEBCO 30 sec topography for the spatial connectivity of water masses. The horizontal resolution of the produced DIVAnd maps is 0.1 degrees. Horizontal correlation length varies from 200km in open sea regions to 50km at the coast. Vertical correlation length is defined as twice the vertical resolution. Signal-to-noise ratio was fixed to 1 for vertical profiles and 0.1 for time series to account for the redundancy in the time series observations. A logarithmic transformation (DIVAnd.Anam.loglin) was applied to the data prior to the analysis to avoid unrealistic negative values. Background field: a vertically-filtered profile of the seasonal data mean value (including all years) is substracted from the data.

Detrending of data: no, advection constraint applied: no.

Units: mg/m3.

Simple

Alternate title
Atlantic-Water_body_chlorophyll-a-v2023-ANA
Date (Creation)
2023-05-16
Edition
3
Identifier
a3461fb1-d209-440e-a49f-7acff7731395
Credit
EMODnet Chemistry
Author
  Ifremer, Scientific Information Systems for the sea -
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  Angers University, Laboratory of current and fossil bio-indicators
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  Aquitaine Observatory of Sciences of the Universe, University of Bordeaux
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  British Oceanographic Data Centre
Joseph Proudman Building 6 Brownlow Street , Liverpool , L3 5DA , United Kingdom
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  British Oceanographic Data Centre
Bidston Observatory , Prenton , CH43 7RA , United Kingdom
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  CNRS, 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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  Hydrographic Institute
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  IEO-CSIC, Murcia Oceanographic Centre
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  IEO-CSIC, A Coruna Oceanographic Centre
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  IEO-CSIC, Santander Oceanographic Centre
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  IEO-CSIC, Spanish Oceanographic Institute
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  IFREMER, Biogeochemical and Ecotoxicological Resarch Unit (Brest)
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  Institute for Marine Science, University of Kiel
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  Institute of Marine Research
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  Institute of Oceanographic Sciences Deacon Laboratory
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  James Rennell Centre for Ocean Circulation
Gamma House Chilworth Research Centre , Southampton , SO1 7NS , United Kingdom
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  Laboratory of Oceanography and Climate, Experiments and numerical Approaches
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  Proudman Oceanographic Laboratory
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  Proudman Oceanographic Laboratory
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  Scottish Association for Marine Science
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  Southampton Oceanography Centre
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  The Leibniz Institute of Marine Sciences at the University of Kiel
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  Universite de Bretagne Occidentale, Lab. D'Oceano. Chimique Loc, LUEM
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  University of Cambridge Department of Earth Sciences
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University Plain , Norwich , NR4 7TJ , United Kingdom
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  University of Edinburgh, Department of Geology and Geophysics
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  University of Las Palmas de Gran Canaria. Faculty of Marine Science.
Edificio Ciencias Básicas CAMPUS UNIVERSITARIO DE TAFIRA Apdo. 550 , Las Palmas de Gran Canaria (Islas Canarias) , 35017 , Spain
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  University of Liverpool, Department of Earth Sciences
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  University of Southampton Department of Oceanography
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  University of Southampton Department of Oceanography
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  University of Southampton School of Ocean and Earth Science
Southampton Oceanography Centre, European Way , Southampton , SO14 3ZH , United Kingdom
Originator
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School of Ocean Sciences, University of Wales Bangor, Menai Bridge, Anglesey, , Menai Bridge , LL59 5AB , United Kingdom
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  Université Libre de Bruxelles, Laboratory of Chemical Oceanography and Water Geochemistry
Boulevard du Triomphe/Triomflaan, CP 208 , Brussels , 1050 , Belgium
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Custodian
  EMODnet Chemistry
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 in the framework of EMODnet Chemistry, under the support of DG MARE Call for Tender EASME/EMFF/2020/3.1.11/European Marine Observation and Data Network (EMODnet) - Lot 5 - Chemistry"
Spatial representation type
Grid
Distance
0.1  degree
Metadata language
eng
Topic category
  • Oceans
Description
bounding box
N
S
E
W
thumbnail


Begin date
1971-03-25T13:25:00
End date
2021-12-30T14:51:02

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
89.0  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
https://emodnet.ec.europa.eu/geoviewer/ ( WWW:LINK )
OnLine resource
Digital Object Identifier (DOI) ( DOI )

Data Access and Citation

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 data used as input for this product have been extracted from the EMODnet Chemistry Download Service: http://emodnet-chemistry.maris2.nl/v_cdi_v3/search.asp
Included with dataset
No
Feature types
surface
File identifier
a3461fb1-d209-440e-a49f-7acff7731395 XML
Metadata language
English
Character set
UTF8
Hierarchy level
Series
Hierarchy level name
Product record
Date stamp
2023-12-12T11:41:48.469Z
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
CHLA_NEAtl_tmbnl.PNG

Spatial extent

N
S
E
W
thumbnail


Keywords

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

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Associated resources

Not available