Welcome to DART, the Data Assimilation Research Testbed. DART is an open-source, freely available community facility for ensemble data assimilation (DA).
The DART documentation is available online.
There is a mailing list where we summarize updates to the DART repository and notify users about recent bug fixes. It is not generally used for discussion so it's a low-traffic list. To subscribe to the list, click on Dart-users.
DART is available through GitHub. To download the latest version of DART:
git clone https://github.com/NCAR/DART.git
If you use DART in research or publications, please cite the following paper as the primary reference:
El Gharamti, M., H. Kershaw, K. Raeder, B. Raczka, B. Johnson, M. Smith, J. L. Anderson, D. Amrhein, N. Collins, I. Grooms, and L. Kugler, 2025: The Data Assimilation Research Testbed: A Robust, Scalable Software Facility with Groundbreaking Capabilities for Model-Data Integration.
Bulletin of the American Meteorological Society, 106(11), E2328–E2345.
https://doi.org/10.1175/BAMS-D-24-0214.1
To cite the DART software itself, please also use:
The Data Assimilation Research Testbed (Version X.Y.Z) [Software]. (2025).
Boulder, Colorado: UCAR/NSF NCAR/CISL/DAReS.
https://doi.org/10.5065/D6WQ0202
Update the version and year as appropriate.
DART is developed and maintained by the Data Assimilation Research Section (DAReS) at the National Center for Atmospheric Research (NCAR).
For information on research projects featuring DART and the DAReS team, visit dart.ucar.edu.
Please see the Contributors' Guide for how to contribute to DART.