Site Changes

If you are a returning user to the site you might notice some changes to our pages. In addition to a minimalist look we hope you will also notice improvements in response time and added functionality to searches and data tables. Please send any questions, comments, or concerns to Thanks for visiting!

The previous version of our website will be available until 2015-06-01 at


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

Map Search lets you draw a box on a map to search for station data.

Advanced Search lets you finely define key word, bounding box, and temporal searches.

Some Starting Searches

Welcome to the CCHDO

The CCHDO's primary mission is to deliver the highest possible quality global CTD and hydrographic data to users. These data are a product of decades of observations related to the physical characteristics of ocean waters carried out during WOCE, CLIVAR and numerous other oceanographic research programs. Whenever possible we provide these data in three easy-to-use formats: WHP-Exchange (which we recommend for data submissions to the CCHDO), WOCE, and netCDF.

The CCHDO also manages public and non-public CTD data to be used for the global Argo and OceanSITES programs.

This site is funded by the National Science Foundation and the National Oceanic and Atmospheric Administration's Climate Observations Division.

This web site and all other CCHDO activities are supported by the National Science Foundation and the National Oceananic and Atmospheric Administration. Any opinions, findings, and conclusions or recommendations expressed in this web site are those of the PI, James Swift, and the CCHDO and do not necessarily reflect the views of the supporting Federal agencies.
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