Scheduled Downtime
On Tuesday 24 October 2023 @ 5pm MT the forums will be in read only mode in preparation for the downtime. On Wednesday 25 October 2023 @ 5am MT, this website will be down for maintenance and expected to return online later in the morning.
Normal Operations
The forums are back online with normal operations. If you notice any issues or errors related to the forums, please reach out to help@ucar.edu

NaN appears when adding a near surface level

Hi Sir/Madam,

The model runs well with 26 levels but strange problem occurs when I try to add a 27th level in between the surface and the one over it. Variable like phimp appears to be NaN at some latitudes. When I change cpu numbers with MPI, the NaN lat also changed. With 2 cpus, only 1 and 25 th y grid in total 48 (T31) has NaN values. I configured with -nlev 27 and pointed the inic file to the one we created with 27 levels.

Attached is my run script on a sgi machine, namelist, and two output file with one of 16 cpus and the other of 2 cpus. The output at the end of the files are lon, lev, lat, and phimp.

Could you pls have a look and tell me what could be wrong? It would be highly appreciated if you can tell me the steps to add a layer.

Many thanks,
Tony
 
Top