The ABC-DA system (v1.4): a variational data assimilation system for convective-scale assimilation research with a study of the impact of a balance constraint

Bannister, Ross Noel

doi:https://doi.org/10.5194/gmd-13-3789-2020

Articles | Volume 13, issue 8

https://doi.org/10.5194/gmd-13-3789-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-13-3789-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 13, issue 8

Model description paper

|

27 Aug 2020

Model description paper |

| 27 Aug 2020

The ABC-DA system (v1.4): a variational data assimilation system for convective-scale assimilation research with a study of the impact of a balance constraint

Ross Noel Bannister

Data sets

Sample of initial data for ABCv1.4da Ross Bannister https://doi.org/10.5281/zenodo.3946359

Model code and software

Model code and supplementary software for ABCv1.4da Ross Bannister and Ruth Petrie https://doi.org/10.5281/zenodo.3531926

Short summary

Forecasting models start from initial conditions, and data assimilation (DA) is the way that initial conditions are found from a combination of previous model data and latest observations. The ABC model is a simplified convective-scale model developed previously, and ABC-DA is the version of this system that includes the DA capability. This system is described in the present paper, and its performance is demonstrated with a range of options that control how the data assimilation is done.