Hi, I am trying to run CMAQv5.2 simulations at the western US with 12km resolution. I have everything prepared in 12km resolution except the “inline” emission files I got from some sources are 36km. Without re-running SMOKE, is it possible to directly use these 36-km inline emissions files for the inline plume rise calculations in my 12km CMAQ simulations? If not, is there a way, without re-running SMOKE, to quickly adjust the inline emission files (such as XLOCA, YLOCA, ROW, COL, and the global attributes of XORIG, YORIG) for my 12km runs? The XCENT, YCENT, P_ALP, P_BET, and P_GAM are the same for both resolutions.
I checked the CMAQ codes and the inline stack information is read and computed by calculating the X and Y values to the XORIG and YORIG then divided by the XCELL and YCELL (the resolution) in the STAK_PARAMS.F.
X = ( XLOCA( S ) - REAL( XORIG_GD, 4 ) ) / REAL( XCELL_GD, 4 )
Y = ( YLOCA( S ) - REAL( YORIG_GD, 4 ) ) / REAL( YCELL_GD, 4 )
I wonder if the following modifications work or not
X = ( XLOCA( S ) - REAL( XORIG_GD, 4 ) ) / ( REAL( XCELL_GD, 4 ) - 9 ) *3
Y = ( YLOCA( S ) - REAL( YORIG_GD, 4 ) ) / ( REAL( YCELL_GD, 4 ) - 13 ) *3
Could anyone help on this? Thank you very much.