Following is a list of key global information products and data sources of dissolved oxygen. Many regional and national data sources and products are not listed explicitly but often provide contributions to the global repositories and products.

	Global Ocean Data Analysis Project (GLODAPv2):  http://glodap.info/
	World Ocean Atlas 2018 https://www.ncei.noaa.gov/products/world-ocean-atlas
	World Ocean Database https://www.nodc.noaa.gov/OC5/SELECT/dbsearch/dbsearch.html
	CLIVAR and Carbon Hydrographic Data Office (CCHDO):  http://cchdo.ucsd.edu/
	Biogeochemical Argo Global Data Assembly Centres:  http://biogeochemical-argo.org/data-access.php
	OceanSITES Global Data Assembly Centres:  http://www.oceansites.org/data/index.html