Problem with METCRO2D using MEGAN inline

MEGAN
1

Hello! I’m using MEGAN inline in CMAQ version 5.4. I’ve used “prepmegan4cmaq” to prepare my input files and I’m getting the following error, related to my MCIP (v5.4) METCRO2D file:

Value for PROMPTFLAG: T returning TRUE
Enter name for gridded met input file [MET_CRO_2D] >>
*** ERROR ABORT in subroutine M3PROMPT
END-OF-FILE encountered

I’ve previously used the MCIP outputs in SMOKE and they worked fine. I’ve also been able to run CMAQ with and without biogenic emissions by enabling CTM_BIOGEMIS_MG = Y. The error occurs when I enable BDSNP_MEGAN = Y.

I’m not sure what the problem is. I think it can’t access the METCRO2D file, but I’ve checked that the path is correct. Does anyone know what might be happening to me? Thank you very much in advance.

2

Simple answer: you need a line of input for this prompt – probably a blank if you want to use the default MET_CRO_2D.
Hack: in your script,
setenv PROMPTFLAG FALSE
More complete answer: in general, this code should be using OPEN3 instead of PROMPTMFILE: As documented here, the I/O API PROMPT* routines are for interactive use, not for scripted.

1 Like
3

For what it’s worth, this PROMPTMFILE line has since been fixed for our upcoming release.

4

I made the change you recommended and now it does read the METCRO2D file, but the execution stops. It seems to read all the input files correctly, but I can’t figure out why it stops. I’m uploading a screenshot of the console, in case you can help me (I can’t upload the log file because I’m a new user. I’ll give you the last sentences). Thanks!

Beginning Emissions
Calling Diagnostic Emissions at Date: 2024002 and time: 0

 Value for PROMPTFLAG:  F returning FALSE
 NOTE: Grid settings initialized using MET_CRO_2D in  
      gridded file GRID NAME: 5kmSEVILLA_CROSS