# Smaller nests have fewer output diagnostics

**URL:** <https://cms-helpdesk.ncas.ac.uk/t/smaller-nests-have-fewer-output-diagnostics/140>\
**Category:** Unified Model\
**Tags:** Monsoon2, Nesting-Suite\
**Created:** [23 July 2021 13:56 UTC](https://cms-helpdesk.ncas.ac.uk/t/smaller-nests-have-fewer-output-diagnostics/140 "2021-07-23T13:56:17Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![MYoshioka](https://avatars.discourse-cdn.com/v4/letter/m/c5a1d2/32.png) [@MYoshioka](https://cms-helpdesk.ncas.ac.uk/u/MYoshioka)\
**Post date:** [23 July 2021 13:56 UTC](https://cms-helpdesk.ncas.ac.uk/t/smaller-nests-have-fewer-output-diagnostics/140/1 "2021-07-23T13:56:17Z")

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I ran vn11.9 nesting suite (u-cg028) with 3 nests in Regn1. I checked the results and noticed that the outputs from smaller nests contain only about a half of section 34 diagnostics of that from the largest nest. These do not include 34-104 AITKEN MODE (SOLUBLE) H2SO4 MMR, for example. I thought everything under ‘app/um’ are common for all nests, am I wrong? Why does this happen and how can this be fixed?

The outputs from nests are  
/home/d03/myosh/cylc-run/u-cg028/share/cycle/20190710T0000Z/Regn1/$nest/RA2M/um/umnsaa\_ph003

where nest=NAtl (large), nest=Brit2Port (middle) and nest=c182 (small).  
results from Brit2Port and c182 contain the same number of diagnostics as far as I checked.

All UKCA related settings including STASH requests for UKCA diagnostics were made in /home/d03/myosh/roses/u-cg028/app/um/opt/rose-app-ukca.conf .

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**Author:** ![grenville](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/grenville/32/29_2.png) [@grenville](https://cms-helpdesk.ncas.ac.uk/u/grenville)\
**Post date:** [26 July 2021 08:47 UTC](https://cms-helpdesk.ncas.ac.uk/t/smaller-nests-have-fewer-output-diagnostics/140/2 "2021-07-26T08:47:19Z")

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Masaru

/home/d03/myosh/cylc-run/u-cg028/share/cycle/20190710T0000Z/Regn1/Brit2Port/RA2M/um/umnsaa\_ph003 is from July 12 from a run for which the STASHC file is no longer available. /home/d03/myosh/cylc-run/u-cg028/share/cycle/20190710T0000Z/Regn1/NAtl/RA2M/um/umnsaa\_ph003 was created on July 14th - the July 14th run for Brit2Port failed with a netcdf error, so I have nothing to compare to help follow the sequence of events.

Grenville

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**Author:** ![MYoshioka](https://avatars.discourse-cdn.com/v4/letter/m/c5a1d2/32.png) [@MYoshioka](https://cms-helpdesk.ncas.ac.uk/u/MYoshioka)\
**Post date:** [26 July 2021 09:30 UTC](https://cms-helpdesk.ncas.ac.uk/t/smaller-nests-have-fewer-output-diagnostics/140/3 "2021-07-26T09:30:59Z")

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Hi Grenville,

Thank you for checking. I didn’t notice the difference in the dates of the output files.

The earlier run that went successfully was for 20190710 and the last run that failed was for 20190712. I don’t know why earlier (0710) run didn’t output the same diagnostics or why the 0712 run overwrote the result for 0710. Or maybe some other thing happened. Anyway I will rerun the suite for 0710 and see what happens.

Masaru

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**Author:** ![system](https://europe1.discourse-cdn.com/flex013/uploads/cms_support/original/1X/1fd2411499ffcbc299fe756cd5cdf26e44956558.png) [@system](https://cms-helpdesk.ncas.ac.uk/u/system)\
**Post date:** [28 July 2021 18:35 UTC](https://cms-helpdesk.ncas.ac.uk/t/smaller-nests-have-fewer-output-diagnostics/140/4 "2021-07-28T18:35:12Z")

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