A 3D-Var assimilation scheme for vertical velocity with CMA-MESO v5.0

Li, Hong; Yang, Yi; Sun, Jian; Jiang, Yuan; Gan, Ruhui; Xie, Qian

doi:https://doi.org/10.5194/gmd-17-5883-2024

Articles | Volume 17, issue 15

https://doi.org/10.5194/gmd-17-5883-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-17-5883-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 15

Development and technical paper

|

07 Aug 2024

Development and technical paper |

| 07 Aug 2024

A 3D-Var assimilation scheme for vertical velocity with CMA-MESO v5.0

Hong Li, Yi Yang, Jian Sun, Yuan Jiang, Ruhui Gan, and Qian Xie

Data sets

Data for manuscript "A 3D-Var Assimilation Scheme for Vertical Velocity with the CMA-MESO v5.0" Li Hong https://doi.org/10.5281/zenodo.10867909

NCEP GFS 0.25 Degree Global Forecast Grids Historical Archive National Centers for Environmental Prediction/National Weather Service/NOAA/U.S. Department of Commerce https://doi.org/10.5065/D65D8PWK

Model code and software

Code for vertical velocity 3D-Var assimilation scheme with CMA-MESO v5.0 Li Hong https://doi.org/10.5281/zenodo.10073822

Short summary

Vertical atmospheric motions play a vital role in convective-scale precipitation forecasts by connecting atmospheric dynamics with cloud development. A three-dimensional variational vertical velocity assimilation scheme is developed within the high-resolution CMA-MESO model, utilizing the adiabatic Richardson equation as the observation operator. A 10 d continuous run and an individual case study demonstrate improved forecasts, confirming the scheme's effectiveness.