Global Sea-Level Observing System (GLOSS)

Data Access

Data Availability: Global Sea-Level Observing System (GLOSS) data and data products are available on-line from the University of Hawaii Sea Level Center (UHSLC), the Permanent Service for Mean Sea Level (PSMSL), and the British Oceanographic Data Centre (BODC).

GLOSS Program Overview

Update December 30, 2009

Data Overview

The GLOSS Station Handbook summarizes in tabular form the basic information on tide gauge stations (not all active) in the GLOSS Core network, providing a one-stop shop with links to the databases described below. The latest status of the Core Network is reported here.

Daily mean and Hourly height data from the GLOSS network  The Joint Archive for Sea Level (JASL) at UHSLC, and the  Delayed Mode Centre at the British Oceanographic Data Centre (BODC) both hold data covering in some cases many decades.  The available data lags by two or more years on the present during which time quality control and adjustment to local benchmarks is done. The data are not referred to the RLR reference used by PSMSL. Plots, maps, and quality control information are available.

A subset of the stations provide data within a month to six weeks to the Fast Delivery Center at USHLC. The center makes this data available online in ASCII format and through a DODS (OPeNDAP) server. The earliest data are from 1985. When quality controlled data from JASL become available they replace the original data in the fast dataset.

Access the Databases

• Gloss Sea-Level Data Access

Data Products

• UHSLC also hosts the JCOMM project Sea Level Program in the Pacific (SL-Pac) and provides in near real-time a series of maps of sea level conditions including anomalies, indices of the equatorial Pacific currents, estimates of the equatorial ridge and trough topography, deviations of sea level, pressure-corrected deviations, and variations in the upper layer volume.
  • SL-Pac Database
• UHSLC also provides plots of real time data from stations worldwide, mostly with data in the last 10 days, and with a concentration in the Pacific.

Data Flow Information

Latest Data Received by the PSMSL

• The British Oceanographic Data Centre provides summaries of the latest data received by the PSMSL for each station in the GLOSS core network.
  • Status of GLOSS Data Submission

Other Information

• Bottom Pressure Measurements:
  Global Undersea Pressure (GLOUP) has assembled and tidally analyzed the data from hourly bottom pressure records. The original data and analyses are on this site and contribute also to:
  • IAPSO pelagic constants
  • Tidal Constants from GLOSS station data