Hello,
I am running a 4-domain nested WRF-UCM simulation for the coastal city of Mumbai (27 km, 9 km, 3 km, 1 km) using SLUCM with MODIS-CGLC-LCZ, with time_step = 54, e_vert = 48, dzstretch_s = 1.11, and dzstretch_u = 1.10.
Some 1 km urban pixels include high-rise LCZ classes, and the maximum building height is 37.5 m as specified in URBANPARAM_LCZ.TBL.
Earlier I used dzbot = 30, but the run stopped without clear errors in the rsl files. Then I presumed it's stopped because of the building height and I then tried dzbot = 50 (above maximum building height), but it still crashed.
When I increased to dzbot = 100, the model ran successfully and produced outputs. Could this be related to coastal dynamics + nested 1 km domains + SLUCM urban geometry interacting with first-layer thickness? For Mumbai urban simulations, is dzbot = 100 scientifically acceptable, or would another compromise value be better?
Also i have tried dzbot = 75, and it ran for 24hrs of simulation time (24 timesteps) and it stopped in between
I am running a 4-domain nested WRF-UCM simulation for the coastal city of Mumbai (27 km, 9 km, 3 km, 1 km) using SLUCM with MODIS-CGLC-LCZ, with time_step = 54, e_vert = 48, dzstretch_s = 1.11, and dzstretch_u = 1.10.
Some 1 km urban pixels include high-rise LCZ classes, and the maximum building height is 37.5 m as specified in URBANPARAM_LCZ.TBL.
Earlier I used dzbot = 30, but the run stopped without clear errors in the rsl files. Then I presumed it's stopped because of the building height and I then tried dzbot = 50 (above maximum building height), but it still crashed.
When I increased to dzbot = 100, the model ran successfully and produced outputs. Could this be related to coastal dynamics + nested 1 km domains + SLUCM urban geometry interacting with first-layer thickness? For Mumbai urban simulations, is dzbot = 100 scientifically acceptable, or would another compromise value be better?
Also i have tried dzbot = 75, and it ran for 24hrs of simulation time (24 timesteps) and it stopped in between
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