``hi，MEIAT-CMAQ administrator: I have been using this tool for two weeks now, but it took me over a week to find the cause of the error. I am very distressed because I have been encountering the same error all along:

 |> Checking Emissions Surrogate Units:
 ======================================

 *** ERROR ABORT in subroutine CHECK_EMIS_UNITS on PE 000
 ERROR: Surrogate Species PAL on emission stream   1 has units G/S\00\00\00\00\00\00\00\00\00\00\00\00\00 which are unkown to 
 CMAQ. Please correct them to proceed.
 PM3EXIT:  date&time specified as 0
 Date&time specified as 0

I strictly followed the case study: 使用2017年的MEIC清单制作珠三角的排放文件 MEIC download:

    输出时间分辨率设置逐月
    输出排放部门设置5部门
    输出空间分辨率设置兰伯特投影
    第一标准纬度：25度, 投影中心纬度：34度,
    第二标准纬度：40度, 投影中心经度：110度,
    左下角横坐标：-3096000米,
    左下角纵坐标：-2286000米,
    X方向分辨率：36千米, Y方向分辨率：36千米,
    X方向网格数：172个, Y方向网格数：127个
    物种SO2,NOx,CO,NMVOC,NH3,PM10,PM2.5,BC,OC
    输出VOC化学机制设置CB05

namelist.input

&global
    griddesc_file = "input/GRIDDESC.22"
    griddesc_name = "20181201_cd"
    big_grid_file = "shapefile/MEIC-0P25.shp"
    geotiff_dir = "Z:/AAATOGETER/tif"
    inventory_label = "MEIC"
    inventory_year = "2018"
    sectors = 'transportation', 'residential', 'power', 'agriculture', 'industry'
    allocator = 'line', 'landscan-global-2017_nodata.tif', 'power.tif', 'agriculture.tif', 'industry.tif',
    allocator_type = "line", "raster", "raster", "raster", "raster"
    inventory_mechanism = "MEIC-CB05"
    target_mechanism = "CB06"
    start_date = "2018-12-01"
    end_date = "2018-12-01"
    cores = 4
 /

 &line
    line_files = "motorway.shp", "primary.shp", "residential.shp", "secondary.shp"
    line_factors = 0.435798, 0.326848, 0.081712, 0.155642,
 /

 &control
    create_grid = 1,
    grid_info = 1,
    create_factor = 1,
    coarse_emission = 1,
    create_source = 1,
 /

python .\coarse_emission_2_fine_emission.py python .\Create-CMAQ-Emission-File.py As of this step, there have been no errors reported. Then I also completed the data preparation for ICON, BCON, MCIP, and MASK

Finally, send an error message:

|> Check Emissions Mapping: +============================

 |> SCALING EMISSIONS CONSISTENT WITH EMISSIONS CONTROL FILE SUPPLIED BY USER
 =============================================================================
 |> Regions Available for Scaling:
 =================================
    Number  Region Label        File Label          Variable
    ------  ------------        ----------          --------
      1     EVERYWHERE          N/A                 N/A
 |> Map Available Emissions Surrogates to Defaults:
 ==================================================

 |> Checking Emissions Surrogate Units:
 ======================================
 *** ERROR ABORT in subroutine CHECK_EMIS_UNITS on PE 000
 ERROR: Surrogate Species ALD2 on emission stream   1 has units MOLES/S\00\00\00\00\00\00\00\00\00 which are unkown to CMAQ. Please correct them to proceed.

PM3EXIT: date&time specified as 0 Date&time specified as 0

Attached are run_cctm.csh and CTM_LOG run_cctm_meic_20220320.zip

Airwhf / MEIAT-CMAQ

CMAQ5.3 ERROR: Surrogate Species PAL on emission stream 1 has units G/S\00\00\00\00\00\00\00\00\00\00\00\00\00 which are unkown to CMAQ #12

|> Check Emissions Mapping: +============================