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Guide to Other Data Sources

We have provided links to other sources of data that may be helpful. The criterion for choosing these links is that they are within 10 kilometres of our listed location.

The links are to a variety of different data types. Thus, one should be aware of differences in the data from these sources prior to using them. An extended description of the different data types can be found in the Global Sea Level Observing System (GLOSS) Implementation Plan 2012, Chapter 6.2.

• GNSS Stations from SONEL: These links go to GNSS station pages at Système d'Observation du Niveau des Eaux Littorales (SONEL). The information can be useful to assess the vertical land motion at or near the tide gauge. In addition, if the GNSS receiver is co-located, the data can be used to find the time-mean geocentric height.
• Real Time Stations from VLIZ: These links are to the Sea Level Station Monitoring Facility hosted by Flanders Marine Institute (VLIZ). This is a real time sea level site that is useful for determining the current status of a station. While data is archived at the facility, it is not quality controlled. Thus, in general it should not be used in scientific analysis.
• Fast Delivery Data from UHSLC: The GLOSS Fast Delivery Center is operated by the University of Hawaii Sea Level Center (UHSLC), which has the responsibility for assembling and distributing a version of GLOSS sea level data sets that has undergone preliminary quality control by the data originators. "Fast delivery" implies posting of the data within 4-6 weeks. Note that this service includes some stations that are not part of the GLOSS network.
• Research Quality Data from UHSLC: The Joint Archive for Sea Level (JASL) acquires hourly datasets that have received a final quality assessment from the data originators, and provides an independent check of the data. JASL then assembles a single hourly time series for each station, or a series of sub-records if datum changes occur over time. The JASL dataset therefore represents a "data product", as changes to the data are implemented by JASL analysts (e.g., level adjustments, timing shifts, outlier removal). These changes are documented in the metadata information.