Impacts of Different Physical Parameterization Configurations on Widespread Heavy Rain Forecast over the Northern Area of Vietnam in WRF-ARW Model

Figure 1

Example of impact of different physical parameterization schemes on heavy rain forecast with the WRF-ARW model (5 km horizontal resolution) over the Bac Bo area (the northern part of Vietnam), issued at 00UTC 27/08/2014. (a) Analysis of mean sea level pressure from the GFS at 00UTC 27/08/2014. (b) 72 h accumulated precipitation from synoptic observation from 00UTC 27/08/2014 to 00UTC 30/08/2014. 72 h accumulated precipitation forecast from the WRF-ARW model with the configuration of KF cumulus parameterization and shortwave radiation and cloud microphysics schemes: (c) KF-Lin-Duh-MYJ; (d) KF-WSM3-Duh-MYJ; (e) KF-WSM5-God-MYJ; (f) KF-WSM5-God-YSU. 72 h accumulated precipitation forecast from the WRF-ARW model with the configuration of BMJ cumulus parameterization: (g) BMJ-Lin-Duh-MYJ; (h) BMJ-WSM3-Duh-MYJ; (i) BMJ-WSM5-God-MYJ; (j) BMJ-WSM5-God-YSU. More explanation of model configurations from (c) to (j) experiments can be found in Table 2.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

(j)