COAST-HF-Marel-Iroise buoy’s time series (French Research Infrastructure ILICO) : long-term high-frequency monitoring of the Bay of Brest and Iroise sea hydrology

The COAST-HF-MAREL-Iroise buoy is a scientific plateform to monitor at high frequency (subhourly) and for long term (since 2000) the coastal ecosystem of the Bay of Brest, which is impacted by both continental and Iroise Sea inputs.This buoy is a part of the national observation network COAST-HF - COAstal ocean observing system-HighFrequency (http://www.coast-hf.fr) from the ILICO research infrastructure (https://www.ir-ilico.fr) and is property of IUEM (Institut Universitaire Européen de la Mer) and Ifremer. The buoy is moored at 200 m of the coast at the outlet of the Bay of Brest where manual sampling is also performed for the weekly observation network SOMLIT-Portzic (https://www.somlit.fr/). Both data base are complementary so that manual data are used to qualify and/or correct buoy’s data (e. g. for temperature, salinity and dissolved oxyge). Corrected data are subsequently called « adjusted-parameter » in the Iroise data base. Manual SOMLIT-Portzic data are also systematically used to convert fluorescence sensor data collected in raw fluorescence unit(FFU) into « eq-µg/L of  chlorophyll » : all fluorescence data are then available as « adjusted-fluorecence » in the data base.

Precision estimated of the complete data collection process is : temperature (±0.1°C), conductivity (±0.3mS/cm), dissolved oxygen (±10%), in vivo fluorescence (±10%), and turbidity (±10%). By the mean of two additional sensors, these core parameters are completed by aerial Photosynthetic Activated Radiation (PAR) and FugacityCO2 (±3µatm). The data can be viewed on the website: https://data.coriolis-cotier.org/platform/6200450.

The COAST-HF-MAREL-Iroise buoy is a scientific plateform to monitor at high frequency (subhourly) and for long term (since 2000) the coastal ecosystem of the Bay of Brest, which is impacted by both continental and Iroise Sea inputs.This buoy is a part of the national observation network COAST-HF - COAstal ocean observing system-HighFrequency (http://www.coast-hf.fr) from the ILICO research infrastructure (https://www.ir-ilico.fr) and is property of IUEM (Institut Universitaire Européen de la Mer) and Ifremer. The buoy is moored at 200 m of the coast at the outlet of the Bay of Brest where manual sampling is also performed for the weekly observation network SOMLIT-Portzic (https://www.somlit.fr/). Both data base are complementary so that manual data are used to qualify and/or correct buoy’s data (e. g. for temperature, salinity and dissolved oxyge). Corrected data are subsequently called « adjusted-parameter » in the Iroise data base. Manual SOMLIT-Portzic data are also systematically used to convert fluorescence sensor data collected in raw fluorescence unit(FFU) into « eq-µg/L of  chlorophyll » : all fluorescence data are then available as « adjusted-fluorecence » in the data base.

Precision estimated of the complete data collection process is : temperature (±0.1°C), conductivity (±0.3mS/cm), dissolved oxygen (±10%), in vivo fluorescence (±10%), and turbidity (±10%). By the mean of two additional sensors, these core parameters are completed by aerial Photosynthetic Activated Radiation (PAR) and FugacityCO2 (±3µatm). The data can be viewed on the website: https://data.coriolis-cotier.org/platform/6200450.

Disciplines

Biological oceanography, Chemical oceanography, Environment, Physical oceanography

Keywords

environmental data, coastal system, high frequency monitoring, long term evolution, automatic buoy

Location

48.7N, 48S, -5.5E, -4W

Devices

- Multiparameter MP7-NKE probe since 2010: WTW sensor for Temperature and conductivity), optode (dissolved oxygene), Turner Design Cyclops (Chla-Fluorometer), Seapoint (backscattering turbidity), potentiometric sensor (pH)

- CARbon-Interface-Ocean-Atmosphere sensor (DT INSU/CNRS)

- Satlantic PAR sensor

- antifouling protection: chlorination

Data

FileSizeFormatProcessingAccessKey
2000-2022 data
154 MoCSVQuality controlled data 98923
2000-2020 data
102 MoCSVQuality controlled data
73329
How to cite
Rimmelin-Maury Peggy, Charria Guillaume, Repecaud Michel, Quemener Loic, Beaumont Laurence, Guillot Antoine, Gautier Laurent, Prigent Sebastien, Le Becque Thierry, Bihannic Isabelle, Bonnat Armel, Le Roux Jean-Francois, Grossteffan Emilie, Devesa Jérémy, Bozec Yann, Gautier de Charnacé Corentin (2023). COAST-HF-Marel-Iroise buoy’s time series (French Research Infrastructure ILICO) : long-term high-frequency monitoring of the Bay of Brest and Iroise sea hydrology. SEANOE. https://doi.org/10.17882/74004

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