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CORDEX-WRF-community / fps-urb-rcc

Repository to coordinate the WRF activity on the CORDEX FPS-URB-RCC
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Bug in LAI initialization for LCZ urban gridcells #5

Open jesusff opened 5 months ago

jesusff commented 5 months ago

I copy here a problem reported by @LluisFB and explained in several wrf-forum and github entries:

Recently I found a bug in WRF, which has already been fixed 2 weeks ago. It is related to LAI initialization when using LCZ data... https://github.com/wrf-model/WRF/pull/1990 It is strange, because I only encountered it whilst trying to solve another issue when I compiled WRF (out git_FPS version) in debug mode.

I am trying to run some urban simulations for Buenos Aires, but I failed encountering a RRTMG seg fault. See my post and how it follows in the WRF-MPAS forum.

https://forum.mmm.ucar.edu/threads/segmentation-fault-with-rrtmg-rtmg_lw_taumoltaumol_mp_taugb3_-module_ra_rrtmg_lw-f90-0.15612/*post-38953 Hope it might help someone, or give some clues to some execution errors...

jesusff commented 5 months ago

There's a proposed fix for this: https://github.com/NCAR/noahmp/commit/6f2bf7c , which we could apply to our WRF v4.5.1-devel branch and use it for the FPS-URB-RCC runs. Not sure why this bug did not affect the existing runs using LCZ for some groups. There are also some others reporting no failure https://github.com/NCAR/noahmp/issues/104#issuecomment-1852295193 It would be nice to find out in which scenario this issue leads to model crashes