This gridded product visualizes 1960 - 2014 water body dissolved oxygen concentration (umol/l) in the North Sea domain, for each season (winter: December – February; spring: March – May; summer: June – August; autumn: September – November). It is produced as a Diva 4D analysis, version 4.6.11: a reference field of all seasonal data between 1960-2014 was used; results were logit transformed to avoid negative/underestimated values in the interpolated results; error threshold masks L1 (0.3) and L2 (0.5) are included as well as the unmasked field. Every step of the time dimension corresponds to a 10-year moving average for each season. The depth dimension allows visualizing the gridded field at various depths.

This gridded product visualizes 1960 - 2014 water body ammonium concentration (umol/l) in the North Sea domain, for each season (winter: December – February; spring: March – May; summer: June – August; autumn: September – November). It is produced as a Diva 4D analysis, version 4.6.9: a reference field of all seasonal data between 1960-2014 was used; results were logit transformed to avoid negative/underestimated values in the interpolated results; error threshold masks L1 (0.3) and L2 (0.5) are included as well as the unmasked field. Every step of the time dimension corresponds to a 10-year moving average for each season. The depth dimension allows visualizing the gridded field at various depths.

Le document présente l'Observatoire des Espaces Naturels, Agricoles, Forestiers et Urbains (NAFU), dispositif où l'Etat et la Région s'unissent pour donner les moyens de prévoir et d'agir

Etat d’avancement de la mise en place des Plan de Protection de l'Atmosphère (PPA) 8 mars 2013 (mis à jour le 24 septembre 2015) Afin de mieux répondre à l’urgence sanitaire causée par la pollution atmosphérique dans plusieurs zones du territoire national, une dynamique de mise en révision des Plans de Protection de l’Atmosphère existants et d’élaboration de nouveaux Plans a été lancée dans toutes les zones polluées de France. A l’heure actuelle : On compte 36 PPA en France, dont 28 signés 1 PPA sont en cours de révision 7 PPA sont en cours d’élaboration 47% de la population française est couverte par un PPA

This gridded product visualizes 1960 - 2014 water body phosphate concentration (umol/l) in the North Sea domain, for each season (winter: December – February; spring: March – May; summer: June – August; autumn: September – November). It is produced as a Diva 4D analysis, version 4.6.9: a reference field of all seasonal data between 1960-2014 was used; results were logit transformed to avoid negative/underestimated values in the interpolated results; error threshold masks L1 (0.3) and L2 (0.5) are included as well as the unmasked field. Every step of the time dimension corresponds to a 10-year moving average for each season. The depth dimension allows visualizing the gridded field at various depths.

L’étalement urbain est une forme d’urbanisation qui s’est développée autour des agglomérations. Il entraine une artificialisation des sols qui produit des impacts sur l’environnement, sur le paysage et sur l’organisation des territoires. La lutte contre l’étalement urbain et l’artificialisation des sols au profit de formes urbaines denses et compactes est une priorité régionale qui implique de mettre en oeuvre une politique globale de maîtrise de la consommation des espaces naturels, agricoles et forestiers. L’Aquitaine est une région vaste et davantage artificialisée que la France métropolitaine. La densité de population est faible et l’Aquitaine arrive en 8ème position des régions occupant le plus d’espace artificialisé par habitant. Son fort dynamisme démographique accroît les pressions sur le foncier disponible, notamment autour des pôles d’emploi. Dans plusieurs aires urbaines, les sols s’artificialisent à un rythme bien supérieur à l’évolution de la population.

SeaDataNet Temperature and Salinity historical data collection v2, including revised quality flags after quality control with ODV. For data access please register at http://www.marine-id.org

Climatology done from the SeaDataNet aggregated dataset v1.1 for the North Atlantic Ocean. The version used for the DIVA software is the 4.6.9. The period covers 1900-2013. For data access please register at http://www.marine-id.org

The GEBCO_2014 Grid is classified as a historical Gebco dataset with a spatial resolution of 30 arc seconds. Originally published in 2014, last updated in April 2015. The data set is largely based on a database of ship-track soundings with interpolation between soundings guided by satellite-derived gravity data. Where they improve on this model, data sets generated from other methods are included. The grid is accompanied by a Source Identifier Grid (SID). This indicates if the corresponding cells in the GEBCO_2014 Grid are based on soundings, pre-generated grids or interpolation.

This gridded product visualizes 1960 - 2014 water body total nitrogen concentration (umol/l) in the North Sea domain, for each season (winter: December – February; spring: March – May; summer: June – August; autumn: September – November). It is produced as a Diva 4D analysis, version 4.6.11: a reference field of all seasonal data between 1960-2014 was used; results were logit transformed to avoid negative/underestimated values in the interpolated results; error threshold masks L1 (0.3) and L2 (0.5) are included as well as the unmasked field. Every step of the time dimension corresponds to a 10-year moving average for each season. The depth dimension allows visualizing the gridded field at various depths.