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CAM6 Data Assimilation Research Testbed (DART) Reanalysis: Cloud-Optimized Dataset

atmosphere climate climate model data assimilation forecast geoscience geospatial land meteorological weather zarr


This is a cloud-hosted subset of the CAM6+DART (Community Atmosphere Model version 6 Data Assimilation Research Testbed) Reanalysis dataset. These data products are designed to facilitate a broad variety of research using the NCAR CESM 2.1 (National Center for Atmospheric Research's Community Earth System Model version 2.1), including model evaluation, ensemble hindcasting, data assimilation experiments, and sensitivity studies. They come from an 80 member ensemble reanalysis of the global troposphere and stratosphere using DART and CAM6. The data products represent states of the atmosphere consistent with observations from 2011 through 2019 at 1 degree horizontal resolution and weekly frequency. Each ensemble member is an equally likely description of the atmosphere, and is also consistent with dynamics and physics of CAM6. The dataset also contains corresponding land surface values at 6-hourly frequency. This dataset is a reformatting, with no change to numerical values, of data from the "CAM6 Data Assimilation Research Testbed (DART) Reanalysis", DOI:10.5065/JG1E-8525.

Update Frequency

Rare. Additional variables or years outside of 2011-2019 may be added in the future.



Managed By

See all datasets managed by National Center for Atmospheric Research.


How to Cite

CAM6 Data Assimilation Research Testbed (DART) Reanalysis: Cloud-Optimized Dataset was accessed on DATE from

Usage Examples

Tools & Applications

Resources on AWS

  • Description
    Project data files
    Resource type
    S3 Bucket
    Amazon Resource Name (ARN)
    AWS Region
    AWS CLI Access (No AWS account required)
    aws s3 ls --no-sign-request s3://ncar-dart-cam6/

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