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CESM Experiments
Browse Community Earth System Model experiments and their resulting output data.
About CESM Experiments
This website serves as a directory for browsing Community Earth System Model (CESM) experiments and their resulting output datasets. It catalogs experiments across multiple CESM and legacy CCSM versions, including current CESM2 releases, CESM1.x iterations, and specialized community projects such as large ensemble runs, geoengineering simulations, and tropical Pacific pacemaker studies. Some associated datasets are hosted on external platforms that require user registration or institutional login, including the Earth System Grid and the NCAR mass store. The site does not provide direct data downloads or processing tools, instead acting as a centralized reference for available experiment outputs and access points.
Key features
- Browse cataloged CESM and legacy CCSM experiment output datasets
- Access specialized community project simulation data
- Link to Earth System Grid hosted experiment datasets
- Reference IPCC AR4 included CCSM3 experiment data
- Locate legacy model data on NCAR mass store
Best for: Climate researchers, Earth system scientists, and students seeking access to publicly available climate model simulation datasets.
Good for
- Aggregates access to diverse CESM and legacy CCSM experiment datasets
- Includes specialized community project simulation outputs
- Provides links to both open and restricted-access climate model data
Watch out for
- Does not host all experiment datasets directly, requiring external platform access for some data
- Some datasets require separate user registration or institutional login to access
- Offers no direct data download or processing functionality on the site
CESM Experiments at a glance
- Website
- cesm.ucar.edu/experiments
- Category
- Research & Data › Open Data & Datasets
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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CESM Experiments FAQ
Is registration required to access all CESM experiment data?
Some datasets are openly accessible, while data hosted on the Earth System Grid or NCAR mass store requires separate registration or institutional login.
Which CESM and CCSM versions have listed experiment data?
The site catalogs experiments for CESM2, CESM1.x, and legacy CCSM 1.x through 4.0 versions.
Are IPCC AR4 climate model experiment datasets included?
Yes, CCSM3.0 runs from the IPCC AR4 Report are listed, with data hosted on the Earth System Grid.
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