A coupled atmospheric–hydrologic modeling system  with variable grid sizes for rainfall–runoff simulation  in semi-humid and semi-arid watersheds: how does  the coupling scale affects the results?

Tian, Jiyang; Liu, Jia; Wang, Yang; Wang, Wei; Li, Chuanzhe; Hu, Chunqi

doi:https://doi.org/10.5194/hess-24-3933-2020

Articles | Volume 24, issue 8

https://doi.org/10.5194/hess-24-3933-2020

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

https://doi.org/10.5194/hess-24-3933-2020

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

Articles | Volume 24, issue 8

Research article

|

11 Aug 2020

Research article |

| 11 Aug 2020

A coupled atmospheric–hydrologic modeling system with variable grid sizes for rainfall–runoff simulation in semi-humid and semi-arid watersheds: how does the coupling scale affects the results?

Jiyang Tian, Jia Liu, Yang Wang, Wei Wang, Chuanzhe Li, and Chunqi Hu

Model code and software

Global Digital Elevation Model DEM 30M Geospatial Data Cloud http://www.gscloud.cn/sources/?cdataid=302&pdataid=10

NCEP FNL Operational Model Global Tropospheric Analyses, continuing from July 1999 NCAR https://rda.ucar.edu/datasets/ds083.2

Short summary

The aim of this study is to explore the appropriate coupling scale of the coupled atmospheric–hydrologic modeling system, which is established by the Weather Research and Forecasting (WRF) model and the gridded Hebei model with different sizes. The results show that the flood simulation results may not always be improved with higher-dimension precision and a more complicated system, and the grid size selection has a strong relationship with the rainfall evenness.