Typhoon rainstorm simulations with radar data assimilation on the  southeast coast of China

Tian, Jiyang; Liu, Ronghua; Ding, Liuqian; Guo, Liang; Zhang, Bingyu

doi:https://doi.org/10.5194/nhess-21-723-2021

Articles | Volume 21, issue 2

https://doi.org/10.5194/nhess-21-723-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/nhess-21-723-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 2

Research article

|

23 Feb 2021

Research article |

| 23 Feb 2021

Typhoon rainstorm simulations with radar data assimilation on the southeast coast of China

Jiyang Tian, Ronghua Liu, Liuqian Ding, Liang Guo, and Bingyu Zhang

Data sets

NCEP Final (FNL) Operational Global Analysis data NCAR https://rda.ucar.edu/datasets/ds083.2/

Short summary

A typhoon always comes with heavy rainfall which leads to great loss. The aim of this study is to explore the reasonable use of Doppler radar data assimilation to correct the initial and lateral boundary conditions of the numerical weather prediction (NWP) systems for typhoon rainstorm forecasts at catchment scale. The results show that assimilating radial velocity at a time interval of 1 h can significantly improve the rainfall simulations and outperform the other assimilation modes.