Map of Chlorophyll a concentrations trend between 1998 and 2019 in the Gulf of Biscay
For the 21 years of the study, an examination of trends in chlorophyll concentration revealed a general decline throughout the Gulf over the production period. These trends, extracted from dynamic linear model, also allowed this decline to be quantified. Expressed as a percentage, a large part of the area below the 50 m bathymetric line showed a decrease of at least 10% over the period, corresponding to a value of at least 0.1 µg.l-1. However, the spatial distribution reveals some more local phenomena. In southern Brittany, from Quimper to Vannes, a particular feature appears, with an upward trend over several kilometres along the coast, followed by a pronounced gradient along the coast. This gradient includes a zone where a continuous monotonic increasing trend is observed, then a zone where the trend becomes not significant and finally, about 15 km from the coast, a new zone where a significant continuous monotonic decreasing trend is observed. The increase in chlorophyll a concentration in the very coastal part is greater than 0.1 µg.l-1 over the period. Another peculiarity concerns the central part, located at the edge of the plateau at Cap Ferrat and Pente Aquitaine, where an increase in chlorophyll a was observed, but the variations remained small, being less than 0.1 µg.l-1. About a hundred kilometres south-west of Saint Nazaire, an area of about 40 by 50 km shows a decrease in chlorophyll a of more than 20%, quantified as more than 0.1 µg.l-1 over the period.
Important Note: This submission has been initially submitted to SEA
scieNtific Open data Edition (SEANOE) publication service and received the recorded DOI.
The metadata elements have been further processed (refined) in EMODnet
Ingestion Service in order to conform with the Data Submission Service
specifications.
Identificatie
Versiedatum | 2023-11-28 |
---|---|
Type versiedatum | Creatie: Aanmaakdatum of opnamedatum van de dataset. |
Versiedatum | 2024-06-26 |
Type versiedatum | Wijziging: Datum van wijziging, controle, verbetering van dataset. |
Versiedatum | 2024-12-19 |
Type versiedatum | Publicatie: Uitgavedatum van de dataset. |
Type versiedatum | Publicatie: Uitgavedatum van de dataset. |
Dataset identificator | a53ad03f-3938-9383-3831-000000098111 |
Dataset identificator |
Inhoud
Contactgegevens dataset(serie)
Organisatie | SEA scieNtific Open data Edition |
---|---|
Adres | By address: IFREMER / IDM / SISMER - Scientific Information Systems for the SEA, IFREMER Centre de Bretagne, ZI Pointe du diable CS 10070 |
Plaats | PLOUZANE |
Postcode | 29280 |
Land | France |
data@seanoe.org | |
Connectiepunt URL | https://www.seanoe.org/ |
Rol | Publisher: Publisher |
Contactgegevens dataset(serie)
Organisatie | Ifremer, Scientific Information Systems for the sea |
---|---|
Adres | IFREMER Centre de Bretagne ZI Pointe du diable CS 10070 |
Plaats | PLOUZANE |
Postcode | 29280 |
Land | France |
sismer@ifremer.fr | |
Connectiepunt URL | http://data.ifremer.fr/SISMER |
Rol | Dataset Holding Organisation: Dataset Holding Organisation |
Contactgegevens dataset(serie)
Organisatie | Ifremer, Scientific Information Systems for the sea |
---|---|
Adres | IFREMER Centre de Bretagne ZI Pointe du diable CS 10070 |
Plaats | PLOUZANE |
Postcode | 29280 |
Land | France |
sismer@ifremer.fr | |
Connectiepunt URL | http://data.ifremer.fr/SISMER |
Rol | Auteur: Partij die auteur is van de data. |
Trefwoorden
GEMET - INSPIRE themes, version 1.0 | Oceanographic geographical features |
---|---|
SeaVoX salt and fresh water body gazetteer |
North Atlantic Ocean
|
SeaDataNet Agreed Parameter Groups | Pigments |
SeaDataNet device categories | radiometers |
SeaDataNet Parameter Discovery Vocabulary | Chlorophyll pigment concentrations in water bodies |
SeaVoX Platform Categories | satellite |
MEDIN data format categories | Delimited |
Karakterset | UTF-8: 8-bit variabele grootte universele karakterset, gebaseerd op ISO/IEC 10646 |
---|---|
Categorie(ën) |
Begrenzing
Omschrijving geografische begrenzing | |
---|---|
Identificator geografische begrenzing |
Begrenzing
Omschrijving geografische begrenzing | |||||||||
---|---|---|---|---|---|---|---|---|---|
Omschrijvende rechthoek
|
|||||||||
Identificator geografische begrenzing |
Referentiesysteem
Horizontaal en/of verticaal referentiesysteem
Naam | WGS 1984 |
---|
Kwaliteit
Niveau kwaliteitsinformatie | Dataset: Informatie heeft betrekking op de dataset. |
---|
Bewerkingen
Algemene beschrijving herkomst | Processed data|For the 21 years of the study, an examination of trends in chlorophyll concentration revealed a general decline throughout the Gulf over the production period. These trends, extracted from dynamic linear model, also allowed this decline to be quantified. Expressed as a percentage, a large part of the area below the 50 m bathymetric line showed a decrease of at least 10% over the period, corresponding to a value of at least 0.1 µg.l-1. However, the spatial distribution reveals some more local phenomena. In southern Brittany, from Quimper to Vannes, a particular feature appears, with an upward trend over several kilometres along the coast, followed by a pronounced gradient along the coast. This gradient includes a zone where a continuous monotonic increasing trend is observed, then a zone where the trend becomes not significant and finally, about 15 km from the coast, a new zone where a significant continuous monotonic decreasing trend is observed. The increase in chlorophyll a concentration in the very coastal part is greater than 0.1 µg.l-1 over the period. Another peculiarity concerns the central part, located at the edge of the plateau at Cap Ferrat and Pente Aquitaine, where an increase in chlorophyll a was observed, but the variations remained small, being less than 0.1 µg.l-1. About a hundred kilometres south-west of Saint Nazaire, an area of about 40 by 50 km shows a decrease in chlorophyll a of more than 20%, quantified as more than 0.1 µg.l-1 over the period. |
---|
Conformiteit
Domeinconsistentie
Resultaat
|
Domeinconsistentie
Resultaat
|
Domeinconsistentie
Resultaat
|
Toegangs- en gebruiksbeperkingen
Legale en veiligheidsbeperkingen
Beperkingen van de dataset(serie)
|
|||||||||||
Beperkingen van de dataset(serie)
|
Distributie
Overdracht
|
Meta-metadata
Metadata identificator (fileIdentifier) | a53ad03f-3938-9383-3831-000000098111 | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Taal metadatarecord | Engels | ||||||||||||||||
Karakterset metadatarecord | UTF-8: 8-bit variabele grootte universele karakterset, gebaseerd op ISO/IEC 10646 | ||||||||||||||||
Hiërarchisch niveau | Dataset: Informatie heeft betrekking op de dataset. | ||||||||||||||||
Metadata wijzigingsdatum | 2025-03-13T00:00:00 | ||||||||||||||||
Naam metadatastandaard | ISO 19115:2003/19139 | ||||||||||||||||
Versie metadatastandaard | 1.0 | ||||||||||||||||
Metadata-auteur
|