a53ad03f-3731-7313-3133-000000071341 Ifremer, Centre Manche, Mer du Nord IFREMER Centre de Boulogne sur Mer 150 quai Gambetta BP 70 BOULOGNE-SUR-MER CEDEX 62321 France https://wwz.ifremer.fr/manchemerdunord/Environnement/LER-Boulogne-sur-Mer web site 2026-04-02T00:00:00 ISO 19115:2003/19139 1.0 WGS 1984 1986-2018 near-surface sea temperature registered daily at the pumping station of the Nuclear Power Station of Flamanville (25 km south west of Cherbourg, Northwest Cotentin, sea Channel) 2020-01-01 2020-06-05 2020-12-14 2023-04-14 a53ad03f-3731-7313-3133-000000071341 DOI:10.17882/71341 Dreves Luc (2020). 1986-2018 near-surface sea temperature registered daily at the pumping station of the Nuclear Power Station of Flamanville (25 km south west of Cherbourg, Northwest Cotentin, sea Channel). SEANOE. https://doi.org/10.17882/71341 During 33 years, from January 1986 to December 2018, seawater temperature has then been registered daily at 4pm in the pumping station([1])-[#_ftn1] of the Nuclear Power Station of Flamanville located 25 km south west of Cherbourg. In order to cool their condensers, seawater has been drawn off with a water flows of 45 m3s-1. The monthly average seawater temperature minimum has been registered in February (8,90°C), with extremes values in 1986 (6,80°C) and 2016 (10,33°C). The maximum of the seawater temperature has been registered in august (17, 81°C), varying from 16,28°C in 1986 to 18,60°C in 2014. The annual average seawater temperature is 13,09°C when using monthly average values and 13,13°C using all 12053 individuals values. Mean annual values differ from 11,37 °C in 1986 to 14,18 °C in 2014. Before this time-series of 33 years, the only dataset available had been registered between 1904 and 1923 and had been published in 35 by J. R. Lumby([5])-[#_ftn5] at 12 meter depth to get an additional time-series of 999 seawater temperatures recorded from September 1976 to May 1980, in a discontinuous way. An increase of 1,2 °C in the annual mean seawater temperature is observed between the first and the third time-series. A key point when analysing those three time-series is to keep in mind the difference in the location, depth and in the sensor. Conclusions from comparisons of those three time series need to be done carefully. Those data are now updated each year before being published in an annual report for Ifremer and EDF([6])-[#_ftn6] about the ecological and fishery monitoring of Flamanville Nuclear Power Station location.   ([1])-[#_ftnref1] Geographical coordinates of the pumping station : 49,53 N – 1,88 W ([2])-[#_ftnref2] LUMBY, J.R. 1935.- « Salinity and temperature of the English Channel ». Fishery Investigations, series II, vol. XIV, n°3 ([3])-[#_ftnref3] Coordonnées géographiques du R 26 : 49° 37’ N – 02° 14’ W ([4])-[#_ftnref4] Today Laboratoire National d'Hydraulique et Environnement (LNHE) ([5])-[#_ftnref5] Geographical coordinates  of Fertex and Aanderaa : 49° 32’ 29’’N -  001° 53’ 49’’W ([6])-[#_ftnref6] ROPERT M., E. ANTAJAN, G. COURTAY, L. DREVES, A. FOVEAU, T. HERNÀNDEZ FARIÑAS, C. LOOTS, I. SCHLAICH , B. SIMON. (2019). Surveillance écologique et halieutique du site électronucléaire de Flamanville : Année 2018. RST/ODE/UL/LERN-19.001. Conv. EDF C4493C0850. 217 p. 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. SEA scieNtific Open data Edition By address: IFREMER / IDM / SISMER - Scientific Information Systems for the SEA, IFREMER Centre de Bretagne, ZI Pointe du diable CS 10070 PLOUZANE 29280 France data@seanoe.org https://www.seanoe.org/ web site Ifremer, Scientific Information Systems for the sea IFREMER Centre de Bretagne ZI Pointe du diable CS 10070 PLOUZANE 29280 France sismer@ifremer.fr https://data.ifremer.fr/Centre-de-donnees web site Ifremer, Scientific Information Systems for the sea IFREMER Centre de Bretagne ZI Pointe du diable CS 10070 PLOUZANE 29280 France sismer@ifremer.fr https://data.ifremer.fr/Centre-de-donnees web site Oceanographic geographical features GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme North Atlantic Ocean North Sea English Channel Atlantic Ocean European mainland Northeast Atlantic Ocean (40W) SeaVoX salt and fresh water body gazetteer 2024-01-15 SeaVoX salt and fresh water body gazetteer Water column temperature and salinity SeaDataNet Agreed Parameter Groups 2023-07-04 SeaDataNet Agreed Parameter Groups SeaDataNet device categories 2024-01-16 SeaDataNet device categories SeaVoX Device Catalogue 2024-01-29 SeaVoX Device Catalogue Temperature of the water column SeaDataNet Parameter Discovery Vocabulary 2023-12-12 SeaDataNet Parameter Discovery Vocabulary CRUISE SUMMARY REPORT INVENTORY (CSR) 2023-10-02 land/onshore structure SeaVoX Platform Categories 2024-01-16 SeaVoX Platform Categories ICES Platform Codes 2024-01-16 ICES Platform Codes EUROPEAN DIRECTORY OF MARINE ENVIRONMENTAL RESEARCH PROJECTS (EDMERP) 2020-06-05 Documents MEDIN data format categories 2024-01-29 MEDIN data format categories World Register of Marine Species (WORMS) 2024-02-07 day to sub-week SeaDataNet Measurement Periodicity Categories 2024-01-29 SeaDataNet Measurement Periodicity Categories BODC-approved data storage units (Spatial Unit) 2023-10-12 BODC-approved data storage units (Spatial Unit) Metres BODC-approved data storage units (Vertical Unit) 2023-10-12 BODC-approved data storage units (Vertical Unit) no limitations to public access Conditions for access and use apply CC-BY 4.0 Oceans 1986-01-01 2018-12-31 -1.88 -1.88 49.53 49.53 0 5 Documents 1 https://cloud.emodnet-ingestion.eu/index.php/s/mvHoejH3C8gwPpG WWW:DOWNLOAD-1.0-http--download https://data-marineinsitu.ifremer.fr/glo_multiparameter_nrt/history/XB/GL_TS_XB_EXEI0080.nc WWW:LINK-1.0-http--link COMMISSION REGULATION (EC) No 1205/2008 of 3 December 2008 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards metadata 2010-12-08 See the referenced specification false Corrigendum to INSPIRE Metadata Regulation published in the Official Journal of the European Union, L 328, page 83 2010-12-08 See the referenced specification false Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 See the referenced specification false Quality controlled data|Les mesures techniques sont réalisées par EDF au sein du bâtiment de pompage (donc sous abri). Les pompes sont toujours immergées, même à basse mer de vives eaux. La mesure automatique de la température de l'eau de mer se fait toujours au même point fixe, à 2 ou 3 mètres au-dessus.