View source for Global Sea Level Observing System

{{Short description|Program to measure global sea levels}}
Established in 1985, The '''Global Sea Level Observing System''' ('''GLOSS''') is an [[Intergovernmental Oceanographic Commission]] (IOC) program whose purpose is to measure [[sea level]] globally for long-term climate change studies. The program's purpose has changed since the [[2004 Indian Ocean earthquake]] and the program now collects real time measurements of sea level. The project is currently upgrading the over 290 stations it currently runs, so that they can send real time data via satellite to newly set up national [[tsunami]] centres.{{cn|date=September 2016}} They are also fitting the stations with [[Photovoltaic module|solar panel]]s so they can continue to operate even if the mains power supply is interrupted by severe weather. The Global Sea Level Observing System does not compete with [[Deep-ocean Assessment and Reporting of Tsunamis]] as most GLOSS [[transducer]]s are located close to land masses while DART's transducers are far out in the ocean.

The concept for GLOSS was proposed to the IOC by oceanographers [[David Thomas Pugh|David Pugh]] and [[Klaus Wyrtki]] in order to develop the [[Permanent Service for Mean Sea Level]] (PSMSL) data bank.<ref name="noc">{{cite web |title=In memoriam of David Thomas Pugh |url=https://noc.ac.uk/news/memoriam-david-thomas-pugh |website=[[National Oceanography Centre]] |date=12 August 2022 |access-date=28 October 2023 |archive-date=28 May 2023 |archive-url=https://web.archive.org/web/20230528092206/https://noc.ac.uk/news/memoriam-david-thomas-pugh |url-status=live }}</ref>  The PSMSL states that "GLOSS provides oversight and coordination for global and regional sea level networks in support of, and with direction from, the oceanographic and climate research communities."<ref>{{Cite web|url=https://www.psmsl.org/gloss/|title = Global Sea Level Observing System (GLOSS)}}</ref>

The Global Sea Level Observation System utilizes 290 tide gauge stations and watches over 90 countries and territories to have a global coverage. 
The research that is provided by GLOSS is important for many things including research into sea level change and ocean circulation, coastal protection during events such as storm surges, providing flood warning and monitoring tsunamis, tide tables for port operations, fisherman, and recreation, to define datums for national or state boundaries.

'''GLOSS Core Network'''
The operation and maintenance of the GLOSS Core Network fulfills a range of research and operational requirements for the GLOSS Network. The goal of this network is to be 100% effective. Each gauge that is placed may differ in some aspects, in terms of having its own way of gathering and recording data.

==References==
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==External links==
{{portal|Oceans}}
* [http://www.gloss-sealevel.org/ Global Sea Level Observing System (GLOSS)]
* [https://www.psmsl.org/gloss/ Global Sea Level Observing System (GLOSS)], Permanent Service for Mean Sea Level (PSMSL)

{{physical oceanography|expanded=other}}
{{Earth-based meteorological observation}}

[[Category:Meteorological data and networks]]
[[Category:Oceanography]]
[[Category:Sea level]]
[[Category:Environmental data]]


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