Process area/point-source ag NH3 emission for CMAQ


#1

Hello,all;

At first, I want to lay out what I want to do with the SMOKE output and CMAQ emission input. I am trying to run CMAQ_12US1 for a single day of 20140101 with my own ammonia emission inventory for NC. This emission inventory is ammonia emission from animal farms in North Carolina. The challenge here is that my ammonia emission is a point source. I need to cut off the ammonia part in NC from non-point ag livestock emission. And also, I need to generate new point source inputs which will be inln and stack group for ag_NH3_NC.

I have a pre-merged emission input file for nonpt sources named “emis_mole_all_20140101_12US1_cmaq_cb6_2014fb_cdc_cb6cmaq_14j.ncf”. It is a gridded single day input. I want to use ncbo in netcdf nco tools to subtract ag_NH3_NC from this file. How to generate the similar gridded CMAQ input or SMOKE output from NEI modeling platform?

I have some outputs from running NEI model platform as shown below.
aday_ag_livestock_onlyNC_2014fa_nata_cb6cmaq_14j.ncf
agmat_ag_livestock_onlyNC_12US2_2014fa_nata_cb6cmaq_14j.ncf
area_ag_livestock_onlyNC.ncf
asmat_l_ag_livestock_onlyNC_cmaq_cb6cmaq_2014fa_nata_cb6cmaq_14j.ncf
asmat_s_ag_livestock_onlyNC_cmaq_cb6cmaq_2014fa_nata_cb6cmaq_14j.ncf
atmp_ag_livestock_onlyNC_2014fa_nata_cb6cmaq_14j_2014001.ncf

However, they are not gridded. It seems that they need to be merged at some point to be compatible with “emis_mole_all_20140101_12US1_cmaq_cb6_2014fb_cdc_cb6cmaq_14j.ncf”.

Do you have any suggestion? If you have any other thoughts on what I can do, please let me know.

Appreciate, CMAS community!

Best;
Yijia Zhao