Tide gauge observations reference networks (REFMAR) - RONIM tide gauges

Shom manages a network of permanent digital coastal tide-gauges on French coasts: the RONIM Sea Level Observation Network. Most tide-gauge observatories are partnered with one or more local partners.

Four main types of data are available for download:

- “Raw high frequency" data: raw observations neither validated nor evaluated, obtained directly from the sensor. 1-minute measurement; integration time 15 seconds (on the minute); sampling period: 1 second.

- "Raw non-real time" data: raw observations neither validated nor evaluated, obtained directly from the sensor. 10-minute measurement; integration time 121 seconds (around every 10 minutes); sampling period: 1 second.

- "Validated non-real time" data: observations checked and validated by Shom from the "Raw non-real time" data. 10-minute measurement; integration time 121 seconds (around every 10 minutes); sampling period: 1 second.

- "Validated hourly" data: observations checked and validated by Shom, generated from "Validated non-real time" data. Hourly measurement obtained from the Vondrak filter with triangular weighting. The hourly height cannot be calculated in the event of an observation gap greater than 1.5 hours.

Citation proposal
(2015) . Tide gauge observations reference networks (REFMAR) - RONIM tide gauges. https://services.data.shom.fr:/geonetwork/WebService/api/records/OBSERVATION_NIVEAU_MER_REFMAR_RONIM.xml

INSPIRE
SDS

INSPIRE

Identification

File identifier: OBSERVATION_NIVEAU_MER_REFMAR_RONIM.xml XML

Hierarchy level: Series

Online resource

Protocol: WWW:LINK-1.0-http--link

Protocol: WWW:LINK-1.0-http--link

Resource identifier

code: http://www.shom.fr/OBSERVATION/NIVEAU_MER_REFMAR_RONIM

Metadata language: fre French

Spatial representation type: Text, table

Encoding

Format: TXT

Version: ---

Specification: -

Format: XML

Version: -

Specification: -

Format: JSON

Version: -

Specification: -

Projection

Classification of data and services

Topic category

Environment

Classification of data and services

Coupled resource

Classification of data and services

Coupled resource

Keywords

GEMET - INSPIRE themes, version 1.0 ( Theme )

Environmental monitoring facilities

Other keywords

Keywords ( Theme )

sea level observations
sea level
sea level
environment
product
open data

Geographic coverage

Temporal reference

Temporal extent

Date ( Publication ): 2015-03-10

Quality and validity

Lineage

Several generations of devices have been used for sea level measurement in France:

- The tide scale with [the oldest systematic observations of sea level dates from 1679 and were made in Brest];

- The float tide gauge [first deployment in France at Toulon in 1842];

- Digital tide gauges with successively: pressure sensor, ultrasonic sensor and since the early 2000s the radar sensor.

Data producers, REFMAR partners: thanks to the REFMAR activity, several organizations make available their sea level observations including:

- The Shom has in April 2017 a network of 46 tide gauges in mainland France and the Overseas: RONIM (Network of Observation of the Level of the Sea). Two other tide gauges complete the network: one in Monaco and the second in Madagascar;

- The ROSAME tide gauge network (Sub-Antarctic and Antarctic Observation Network at the level of MRE), which was created in the early 1990s is composed of four tide gauge observatories at Kergeluen, St Paul, Crozet Island and Dumont d'Urville;

- The DREAL-based flood forecasting services (SPC) deploy tide gauges in the estuaries as well as in the bays for their operational needs.

A list of partners is available here: https://refmar.shom.fr/reseau-ronim