Global Ocean Data Analysis Project (GLODAP) v2.2021

The Global Ocean Data Analysis Project (GLODAP) is a synthesis activity for ocean surface to bottom biogeochemical data collected through chemical analysis of water samples. Data for 12 core variables (salinity, oxygen, phosphate, nitrate, silicate, dissolved inorganic carbon, total alkalinity, pH, CFC-11, CFC-12, CFC-113 and CCl4) are subjected to primary and secondary quality control to identify outliers and correct for measurement biases.

Data and resources

Data Subset Form

ERDDAP's version of the OPeNDAP .html web page for this dataset. Specify a subset of the dataset and download the data via OPeNDAP or in many different file…

ERDDAP Open
Make-A-Graph Form

ERDDAP's Make-A-Graph .html web page for this dataset. Create an image with a map or graph of a subset of the data.

ERDDAP Open
Background Information

Background information from the source

HTML Open
Background Information

Background information from the source

HTML Open
Background Information

Background information from the source

HTML Open
ERDDAP-tabledap

ERDDAP's tabledap service (a flavor of OPeNDAP) for tabular (sequence) data. Add different extensions (e.g., .html, .graph, .das, .dds) to the base URL for…

ERDDAP Open
Background Information

Background information from the source

HTML Open
OPeNDAP

An OPeNDAP service for tabular (sequence) data. Add different extensions (e.g., .html, .das, .dds) to the base URL for different purposes.

ERDDAP Open
Background Information

Background information from the source

HTML Open
Subset

Web page to facilitate selecting subsets of the dataset

ERDDAP Open

Additional information

Temporal extent	1972-07-24 – 2020-01-22
Date (creation)	2026-09-16
Status	onGoing
Update frequency	asNeeded
Metadata language	en
License	Creative Commons Attribution Share-Alike http://www.opendefinition.org/licenses/cc-by-sa
Source metadata	ISO 19115 XML
Last updated	2026-11-04
Created	2026-11-04
API	package_show