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.

Use the search box in the upper right, or explore additional search options below:

Cruise Data Search

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

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

Profile Data Search (ERDDAP)

Search individual profiles instead of full cruises, filter by parameters, and download in multiple formats.

Simple Profile Search CTD Profile Search Bottle Profile Search

See the variables available in ERDDAP.

Additional Search Tools

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

Looking for data? Some starting searches can be found under the Find Data menu, where you can browse by basin, program, or time series.

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CCHDO Data Overview

• File Formats
• Parameters

Quick Start Guides (Jupyter Notebooks)

Explore hands-on tutorials using CCHDO data:

• Explore Repeat Hydrography Data
• Explore Bottle File Data
• Combine CTD and Bottle Data

Derived Products

• GO-SHIP Easy Ocean: Formatted and gridded ship-based hydrographic section data
• Java OceanAtlas: Best vertical section data