# Error in generating inline dust emissions while running CMAQ5.0.2

**URL:** <https://forum.cmascenter.org/t/error-in-generating-inline-dust-emissions-while-running-cmaq5-0-2/1167>\
**Category:** CMAQ\
**Created:** [December 4, 2019, 12:34am UTC](https://forum.cmascenter.org/t/error-in-generating-inline-dust-emissions-while-running-cmaq5-0-2/1167 "2019-12-04T00:34:14Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![lizadams](https://avatars.discourse-cdn.com/v4/letter/l/49beb7/32.png) [@lizadams](https://forum.cmascenter.org/u/lizadams)\
**Post date:** [December 4, 2019, 9:55pm UTC](https://forum.cmascenter.org/t/error-in-generating-inline-dust-emissions-while-running-cmaq5-0-2/1167/2 "2019-12-04T21:55:29Z")

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Hi Catalyst,  
In the benchmark run script for CMAQv5.3, the environment variables are set as follows:

#\> Windblown dust emissions configuration  
if ( $CTM\_WB\_DUST == ‘Y’ ) then  
# Input variables for BELD3 Landuse option  
setenv DUST\_LU\_1 $LUpath/beld3\_12US1\_459X299\_output\_a\_bench.nc  
setenv DUST\_LU\_2 $LUpath/beld4\_12US1\_459X299\_output\_tot\_bench.nc  
endif

I examined the file using ncdump and see that the USGS\_shrubland variable is in that file.  
ncdump beld3\_12US1\_459X299\_output\_a\_bench.nc | more  
netcdf beld3\_12US1\_459X299\_output\_a\_bench {  
dimensions:  
TSTEP = 1 ;  
DATE-TIME = 2 ;  
LAY = 1 ;  
VAR = 120 ;  
ROW = 80 ;  
COL = 100 ;  
variables:  
int TFLAG(TSTEP, VAR, DATE-TIME) ;  
TFLAG:units = “\<YYYYDDD,HHMMSS\>” ;  
TFLAG:long\_name = "TFLAG " ;  
TFLAG:var\_desc = "Timestep-valid flags: (1) YYYYDDD or (2) HHMMSS " ;  
float USGS\_urban(TSTEP, LAY, ROW, COL) ;  
USGS\_urban:long\_name = "USGS\_urban " ;  
USGS\_urban:units = "percent " ;  
USGS\_urban:var\_desc = "BELD3 land use " ;  
float USGS\_drycrop(TSTEP, LAY, ROW, COL) ;  
USGS\_drycrop:long\_name = "USGS\_drycrop " ;  
USGS\_drycrop:units = "percent " ;  
USGS\_drycrop:var\_desc = "BELD3 land use " ;  
float USGS\_irrcrop(TSTEP, LAY, ROW, COL) ;  
USGS\_irrcrop:long\_name = "USGS\_irrcrop " ;  
USGS\_irrcrop:units = "percent " ;  
USGS\_irrcrop:var\_desc = "BELD3 land use " ;  
float USGS\_cropgrass(TSTEP, LAY, ROW, COL) ;  
USGS\_cropgrass:long\_name = "USGS\_cropgrass " ;  
USGS\_cropgrass:units = "percent " ;  
USGS\_cropgrass:var\_desc = "BELD3 land use " ;  
float USGS\_cropwdlnd(TSTEP, LAY, ROW, COL) ;  
USGS\_cropwdlnd:long\_name = "USGS\_cropwdlnd " ;  
USGS\_cropwdlnd:units = "percent " ;  
USGS\_cropwdlnd:var\_desc = "BELD3 land use " ;  
float USGS\_grassland(TSTEP, LAY, ROW, COL) ;  
USGS\_grassland:long\_name = "USGS\_grassland " ;  
USGS\_grassland:units = "percent " ;  
USGS\_grassland:var\_desc = "BELD3 land use " ;  
float USGS\_shrubland(TSTEP, LAY, ROW, COL) ;  
USGS\_shrubland:long\_name = "USGS\_shrubland " ;  
USGS\_shrubland:units = "percent " ;  
USGS\_shrubland:var\_desc = "BELD3 land use " ;  
float USGS\_shrubgrass(TSTEP, LAY, ROW, COL) ;  
USGS\_shrubgrass:long\_name = "USGS\_shrubgrass " ;  
USGS\_shrubgrass:units = "percent " ;  
USGS\_shrubgrass:var\_desc = "BELD3 land use " ;

I am not sure if this option is available with CMAQ5.0.2. Is there a reason that you are not using CMAQv5.3 for your runs?

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