Welcome to the CCHDO

CCHDO (CLIVAR and Carbon Hydrographic Data Office) supports oceanographic research by providing access to high quality, global, vessel-based CTD and hydrographic data from GO-SHIP, WOCE, CLIVAR and other repeat hydrography programs. These data are openly accessible and served in standardized community formats (WHP-Exchange, WOCE, and netCDF). CCHDO also manages public and non-public CTD data for use by the global Argo and OceanSITES programs.


Keyword search is provided by the search box in the upper right of the page. Other options include:

Map Search Draw a box on a map to find cruise data.

Advanced Search Find cruises by keyword, lat/lon, and/or time.

ERDDAP CTD Profile Search ERDDAP Bottle Profile Search Search profiles versus full cruises, on all or a subset of parameters, with multiple download formats. See the variables available in ERDDAP.

Argovis Ship-Based Profiles collection Argovis includes data from CCHDO and allows colocating data from several other sources.


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This material is based upon work supported by the National Science Foundation under Grant No. 1829814, and the National Oceanic and Atmospheric Administration under award NA20OAR4320278. Any opinions, findings, and conclusions or recommendations expressed in this material are those of CCHDO staff and do not necessarily reflect the views of the supporting agencies.