SLSMF background information

The Flanders Marine Institute (VLIZ, Belgium) hosts a Sea Level Station Monitoring Facility (SLSMF) that includes Global Sea Level Observing System (GLOSS) Core stations. VLIZ provides a web-based global sea level station monitoring service for viewing sea level data received in real-time from different network operators primarily via the Global Telecommunication Service (GTS), but also through other communications channels. The service provides information about the operational status of GLOSS stations through quick inspection of the raw data stream. The sea level station catalogue (SSC) system developed and maintained at VLIZ links sea level station metadata repositories.

The SLSMF provides an API web-service for direct data access of raw sea level data. The API allows users to retrieve information on the station metadata, list of stations and sensors, as well as sea level data for a station with a 30-day limit (or 150,000 records) within the user-defined time interval. More information on the use of the SLSMF API service can be found through this link: https://api.ioc-sealevelmonitoring.org/v1/doc#/.

A new API web-service of the SLSMF built by the OpenAPI standard (https://api.ioc-sealevelmonitoring.org/v2/doc#/) was launched by VLIZ in the spring of 2025 using the Slim Framework which allows for more endpoints, including research data. The users can access through the new API daily automated quality-controlled sea level data and retrieve information on the stations, sensors, station operators and (SSC and IOC) catalogue entries listed by countries.