WFD – Artois-Picardie Basin – Ecological status – Physico-chemical status – Transparency
Description
The analysis concerns the turbidity parameter (NTU) values measured in coastal and transitional waters from the Belgian Border to the Somme Bay. Only the period of highest primary production (March to October) is considered, excluding winter turbid episodes caused by weather conditions (period of low primary production). The transparency indicator is the 90 percentile, which corresponds to the value such that 90% of the observed values are lower than it. It is compared to the reference value for the type of the water body. Transparency is a parameter for which the results have not so far led to any change in the WFD classification in recent years. Therefore, the update is only done for each water body once per 6-year management plan, unless new and significant observations change the assessment.
Resources
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https://www.data.gouv.fr/api/1/datasets/r/1c825fdf-7488-4ee5-bb9e-ac6a5ce86d15 |
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https://www.data.gouv.fr/api/1/datasets/r/19fd77c4-d4e3-46fe-9d04-66b03a4932e1 |
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https://www.data.gouv.fr/api/1/datasets/r/87aa0185-0587-4a66-8176-55a40f1b56ad |
Tags
- open-data
- directive-cadre-sur-leau-dce
- metropole-manche-mer-du-nord
- dce
- donnees-ouvertes
- etat-du-milieu-biogeochimie
- milieu-physique-hydrodynamique-cotiere
- installations-de-suivi-environnemental