ASTAN temperature & salinity historical time series (1952 - 1999)

The Astan-Roscoff time-series data characterize the temperature and salinity of the Western English Channel. Between 1952 and 1982 the sampling station was located to the north-west of Batz Island. Since 1983, the sampling station is located at the current SOMLIT-Astan site (north-east of Batz Island). Monthly measurements have been undertaken during the 1952-1982 period, bi-monthly measurements have been undertaken since 1983 by Station Biologique de Roscoff/Sorbonne Université/CNRS. Since 1997, this station has been part of the French coastal environment monitoring network SOMLIT (https://www.somlit.fr/), accredited by the CNRS as a national Earth Science Observatory (Service National d’Observation: SNO), aiming at assessing their long-term evolution including both natural and anthropogenic forcings.

Samples were collected with a Niskin bottle at high tide slack during neap tides at 2m-depth and at 60m-depth for the 1983-1999 period. Until 1970 the exact date of sampling is unknown, hence in the data set, the 1st of the month is present. Water samples where analysed for Salinity with a Salinometer Guidline Autocal and Temperature was measured during sampling with a reversing mercury thermometer (Richet and Wiese).

Starting in 2000, this time series has been integrated in the SOMLIT ASTAN time-series, which is part of the SOMLIT National Observation Service.

The Astan-Roscoff time-series data characterize the temperature and salinity of the Western English Channel. Between 1952 and 1982 the sampling station was located to the north-west of Batz Island. Since 1983, the sampling station is located at the current SOMLIT-Astan site (north-east of Batz Island). Monthly measurements have been undertaken during the 1952-1982 period, bi-monthly measurements have been undertaken since 1983 by Station Biologique de Roscoff/Sorbonne Université/CNRS. Since 1997, this station has been part of the French coastal environment monitoring network SOMLIT (https://www.somlit.fr/), accredited by the CNRS as a national Earth Science Observatory (Service National d’Observation: SNO), aiming at assessing their long-term evolution including both natural and anthropogenic forcings.

Samples were collected with a Niskin bottle at high tide slack during neap tides at 2m-depth and at 60m-depth for the 1983-1999 period. Until 1970 the exact date of sampling is unknown, hence in the data set, the 1st of the month is present. Water samples where analysed for Salinity with a Salinometer Guidline Autocal and Temperature was measured during sampling with a reversing mercury thermometer (Richet and Wiese).

Starting in 2000, this time series has been integrated in the SOMLIT ASTAN time-series, which is part of the SOMLIT National Observation Service.

Disciplines

Chemical oceanography

Keywords

temperature, salinity, time series, coastal environment, physico-chemical parameters, climate impact, earth science observatory

Location

48.7805N, 48.7778S, -3.9375E, -4.0611W

Data

FileSizeFormatProcessingAccess
Temperature and Salinity measurements at the Roscoff ASTAN sampling station from 1952 to 1999 (ODV format)
112 KoODVQuality controlled data
Temperature and Salinity measurements at the Roscoff ASTAN sampling station from 1952 to 1999 (CSV format)
63 KoCSVQuality controlled data
How to cite
Bureau Sarah, Hoebeke Mark, Breton Elsa, Cariou Thierry, Dauvin Jean-Claude, Macé Éric, Morin Pascal, Thiébaut Éric (2023). ASTAN temperature & salinity historical time series (1952 - 1999). SEANOE. https://doi.org/10.17882/95911

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