# Experiment Proposal: Changing aerosol climatology in RNS at coastal Antarctica

**URL:** <https://forum.access-hive.org.au/t/experiment-proposal-changing-aerosol-climatology-in-rns-at-coastal-antarctica/2165>\
**Category:** Experiments\
**Created:** [17 June 2024 01:53 UTC](https://forum.access-hive.org.au/t/experiment-proposal-changing-aerosol-climatology-in-rns-at-coastal-antarctica/2165 "2024-06-17T01:53:04Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ZhangchengPei](https://avatars.discourse-cdn.com/v4/letter/z/8e8cbc/32.png) [@ZhangchengPei](https://forum.access-hive.org.au/u/ZhangchengPei)\
**Post date:** [17 June 2024 01:53 UTC](https://forum.access-hive.org.au/t/experiment-proposal-changing-aerosol-climatology-in-rns-at-coastal-antarctica/2165/1 "2024-06-17T01:53:04Z")

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**Experiment title:** Changing aerosol climatology in UM RNS at coastal Antarctica

**Summary:**  
Run the UM RNS RAL3.2 with aerosol climatology instead of fixed cloud droplet number concentration to produce more realistic aerosol fields for cloud activation. In addition, we’ll enhance the sulfate mass mixing ratio as we found too low cloud condensation nuclei in previous runs with aerosol climatology.  
**Scientific motivation:** Improve aerosol-cloud interaction in UM regional model  
**Model:** UM RNS  
**Configuration:** RAL3.2  
**Run plan:** Runs are 7 days with 10-min outputs. Horizontal resolution is 1.5 km (0.0135 degree) with 400 x 400 grids centered at Davis, Antarctica.  
**Total KSUs required** : around 15 KSUs  
**Total storage required** : No storage needed

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**Author:** ![Matt\_Woodhouse](https://avatars.discourse-cdn.com/v4/letter/m/9fc348/32.png) [@Matt\_Woodhouse](https://forum.access-hive.org.au/u/Matt_Woodhouse)\
**Post date:** [17 June 2024 02:07 UTC](https://forum.access-hive.org.au/t/experiment-proposal-changing-aerosol-climatology-in-rns-at-coastal-antarctica/2165/2 "2024-06-17T02:07:27Z")

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There are ~25 kSU remaining on gx60 - seems like a good use in the final couple of weeks of the quarter

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**Author:** ![Matt\_Woodhouse](https://avatars.discourse-cdn.com/v4/letter/m/9fc348/32.png) [@Matt\_Woodhouse](https://forum.access-hive.org.au/u/Matt_Woodhouse)\
**Post date:** [19 June 2024 05:44 UTC](https://forum.access-hive.org.au/t/experiment-proposal-changing-aerosol-climatology-in-rns-at-coastal-antarctica/2165/3 "2024-06-19T05:44:05Z")

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Charmaine, Yi, Heidi and I had a chat about this - please use what you need!