# Segment fault occurred when running onroad\_RPH

**URL:** <https://forum.cmascenter.org/t/segment-fault-occurred-when-running-onroad-rph/5803>\
**Category:** Run Errors and Warnings\
**Created:** [May 14, 2025, 2:17pm UTC](https://forum.cmascenter.org/t/segment-fault-occurred-when-running-onroad-rph/5803 "2025-05-14T14:17:24Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![lwu127](https://avatars.discourse-cdn.com/v4/letter/l/ea666f/32.png) [@lwu127](https://forum.cmascenter.org/u/lwu127)\
**Post date:** [May 14, 2025, 2:17pm UTC](https://forum.cmascenter.org/t/segment-fault-occurred-when-running-onroad-rph/5803/1 "2025-05-14T14:17:24Z")

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Hi,

I saw the following error while running onroad\_RPH for the year of 2019:

 ![Screenshot 2025-05-14 at 10.04.52 AM](https://canada1.discourse-cdn.com/flex027/uploads/cmas/original/2X/8/81ce0dece50c28eb73da68060b960ddcd0a1939c.jpeg)  
Following the error message i checked the 1427 line of movesmrg.f:  
 ![Screenshot 2025-05-14 at 10.02.01 AM](https://canada1.discourse-cdn.com/flex027/uploads/cmas/original/2X/9/9f16e5919d9204647a72b95d0c755a84b06fb413.png)  
I checked the movesmrg\_RPH\_onroad.log and they all show: Normal completion.  
However in the rep\_logs\_onroad\_2019ge\_cb6\_19k\_CONUS12\_all\_level1.csv file, there are errors:

> priority,known,count,message type,first file  
> 0,False,1,‘ERROR: Grid cell temperature -41.18 out of range of minimum emission factor data -30.00’,/glade/derecho/scratch/hmao/SMOKE-4.8/2019ge\_cb6\_19k/intermed/onroad/RPH/logs/movesmrg\_RPH\_onroad\_jan\_2019ge\_cb6\_19k\_20190129\_CONUS12\_cmaq\_cb6ae7.log  
> 0,False,1,‘ERROR: Grid cell temperature -22.38 out of range of minimum emission factor data -10.00’,/glade/derecho/scratch/hmao/SMOKE-4.8/2019ge\_cb6\_19k/intermed/onroad/RPH/logs/movesmrg\_RPH\_onroad\_jan\_2019ge\_cb6\_19k\_20190124\_CONUS12\_cmaq\_cb6ae7.log

I checked my run script and saw: setenv TEMP\_BUFFER\_BIN “10”. Is my run success? If not, what should i do to get rid of the error message.

Thanks,  
Lin

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**Author:** ![eyth.alison](https://avatars.discourse-cdn.com/v4/letter/e/7ab992/32.png) [@eyth.alison](https://forum.cmascenter.org/u/eyth.alison)\
**Post date:** [May 14, 2025, 3:58pm UTC](https://forum.cmascenter.org/t/segment-fault-occurred-when-running-onroad-rph/5803/2 "2025-05-14T15:58:24Z")

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We suspect that the segmentation fault is related to the temperature error – this can happen when using your own meteorology. Is your domain in a particularly cold area? We suggest increasing TEMP\_BUFFER\_BIN from 10 to 30 and see if that resolves the seg fault.

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**Author:** ![lwu127](https://avatars.discourse-cdn.com/v4/letter/l/ea666f/32.png) [@lwu127](https://forum.cmascenter.org/u/lwu127)\
**Post date:** [May 14, 2025, 5:48pm UTC](https://forum.cmascenter.org/t/segment-fault-occurred-when-running-onroad-rph/5803/3 "2025-05-14T17:48:34Z")

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Thanks Alison,

Yes i am using my own meteorology. But my domain is the 12US1 domain. I increased TEMP\_BUFFER\_BIN to 30 and the segment fault and the “Grid cell temperature” are still there. Does this mean there is something wrong with my WRF simualtion?

Thanks,  
Lin

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<div class="post-metadata">

**Author:** ![eyth.alison](https://avatars.discourse-cdn.com/v4/letter/e/7ab992/32.png) [@eyth.alison](https://forum.cmascenter.org/u/eyth.alison)\
**Post date:** [May 14, 2025, 10:38pm UTC](https://forum.cmascenter.org/t/segment-fault-occurred-when-running-onroad-rph/5803/4 "2025-05-14T22:38:13Z")

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Have you quality-assured the met-data? The temperatures seem very low.