# Questions for SMOKE output file sginlnts\_l file and how **URL:** \ **Category:** SMOKE\ **Created:** [September 14, 2019, 1:10am UTC](https://forum.cmascenter.org/t/questions-for-smoke-output-file-sginlnts-l-file-and-how/942 "2019-09-14T01:10:43Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![RockeyZ](https://avatars.discourse-cdn.com/v4/letter/r/51bf81/32.png) [@RockeyZ](https://forum.cmascenter.org/u/RockeyZ)\ **Post date:** [September 14, 2019, 1:10am UTC](https://forum.cmascenter.org/t/questions-for-smoke-output-file-sginlnts-l-file-and-how/942/1 "2019-09-14T01:10:43Z")
Hi all, I used SMOKE to generate emissions for CMAQ, and I set **SMK\_SRCGROUP\_OUTPUT\_YN** to **Y**. The output files I got are: _agts\_l.nonroad.20100703.1.LOSCA\_12KM.ncf_ _agts\_l.onroad.20100703.1.LOSCA\_12KM.ncf_ _pgts\_l.point.20100703.1.LOSCA\_12KM.ncf_ _inlnts\_l.point.20100703.1.LOSCA\_12KM.ncf_ _sginlnts\_l.nonroad.20100703.1.LOSCA\_12KM.ncf_ _sginlnts\_l.nonroad.20100703.1.LOSCA\_12KM.ncf_ _sginlnts\_l.point.20100703.1.LOSCA\_12KM.ncf_ _source\_groups\_out.nonroad.LOSCA\_12KM.ncf_ _source\_groups\_out.onroad.LOSCA\_12KM.ncf_ _source\_groups\_out.point.LOSCA\_12KM.ncf_ _stack\_groups.point.LOSCA\_12KM.ncf_ Now I have some questions that I tried to google them but found no answers: 1. When setting **SMK\_SRCGROUP\_OUTPUT\_YN** to **Y** , I got extra files: _sginlnts\_l files_ and _source\_groups\_out files_. I wonder what’s the relationship between _sginlnts\_l files_ and _agts/pgts files_. They have the same variables, so i think that _sginlnts\_l files_ contains the same emission data as the _agts/pgts files_, but expressed in another way: have source groups in it, and is not gridded data. If I use _agts/pgts files_, I should not use the _sginlnts files_ again since the emissions may be double counted. 2. If _sginlnts\_l files_ have the same emission data as _agts/pgts files_, the dimension of each variable in _sginlnts\_l file_ should be the dimension of each variable in _agts/pgts files_ multiplied by the number of source groups. However, as I checked the two kinds of files, my previous guess was not correct. For example, _agts\_l.nonroad.20100703.1.LOSCA\_12KM.ncf_ has 46 ROWs and 58 COLs. _sginlnts\_l.nonroad.20100703.1.LOSCA\_12KM.ncf_ has 147577 ROWs and 1 COL. I have 5 source groups for nonroad. 147577\>46_58_5, so how is the dimension of _sginlnts\_l.nonroad.20100703.1.LOSCA\_12KM.ncf_ determined? 3. How is _sginlnts\_l file_ implemented in CMAQ run script? The SMOKE documentation only mentioned that _sginlnts\_l file_ is CMAQ-ready Source Apportionment Input Data File. No more other information is provided. 4. The last question is about CMAQ-ISAM. In CMAQv5.0.2 ISAM page ([https://www.airqualitymodeling.org/index.php/CMAQv5.0.2\_Integrated\_Source\_Apportionment](https://www.airqualitymodeling.org/index.php/CMAQv5.0.2_Integrated_Source_Apportionment)) **CMAQ ISAM Input/Output Data** section, it indicates that you can use multiple gridded surface emissions sectors. But in the latest CMAQv5.3, it’s not mentioned any more. So is CMAQ able to read multiple gridded surface emissions? And if yes, how to read multiple surface emissions? I would appreciate it if anyone can answer any of the question above. Thanks Yusheng ---
**Author:** ![bbaek](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.cmascenter.org/bbaek/32/22_2.png) [@bbaek](https://forum.cmascenter.org/u/bbaek)\ **Post date:** [September 15, 2019, 9:00am UTC](https://forum.cmascenter.org/t/questions-for-smoke-output-file-sginlnts-l-file-and-how/942/2 "2019-09-15T09:00:49Z")
They are inline sources groups files. Unlike other offline sources, those inline sources will be internally processed to grid cells for a better horizontal and vertical representations. Based on my current knowledge, these inline and offline source grouped emissions files are not supported in the latest CMAQ v5.3. but only by CMAQ v5.0.2 ISAM. It may support in the future. ---
**Author:** ![RockeyZ](https://avatars.discourse-cdn.com/v4/letter/r/51bf81/32.png) [@RockeyZ](https://forum.cmascenter.org/u/RockeyZ)\ **Post date:** [September 16, 2019, 10:03pm UTC](https://forum.cmascenter.org/t/questions-for-smoke-output-file-sginlnts-l-file-and-how/942/3 "2019-09-16T22:03:30Z")
Thanks! I’m currently using CMAQ v5.0.2. To implement those files, do you know where I should put them in the run.cctm\_isam script?