# Initial plans in the UK for CMIP7 and the physical (HadGEM3) and Earth system (UKESM2) models intended for CMIP7

**URL:** <https://forum.access-hive.org.au/t/initial-plans-in-the-uk-for-cmip7-and-the-physical-hadgem3-and-earth-system-ukesm2-models-intended-for-cmip7/1201>\
**Category:** Main Program Day 1\
**Tags:** video, ukmo, cmip7, talk, session-4\
**Created:** [31 August 2023 07:20 UTC](https://forum.access-hive.org.au/t/initial-plans-in-the-uk-for-cmip7-and-the-physical-hadgem3-and-earth-system-ukesm2-models-intended-for-cmip7/1201 "2023-08-31T07:20:44Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Aidan](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.access-hive.org.au/aidan/32/42_2.png) [@Aidan](https://forum.access-hive.org.au/u/Aidan)\
**Post date:** [31 August 2023 07:20 UTC](https://forum.access-hive.org.au/t/initial-plans-in-the-uk-for-cmip7-and-the-physical-hadgem3-and-earth-system-ukesm2-models-intended-for-cmip7/1201/1 "2023-08-31T07:20:44Z")

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# Title

Initial plans in the UK for CMIP7 and the physical (HadGEM3) and Earth system (UKESM2) models intended for CMIP7

# Speaker

Colin Jones, UK Met Office

# Recording

[![](https://us1.discourse-cdn.com/flex020/uploads/access1/original/2X/e/ec7746a7d64f64cd8e985404b3a840c5c6e7294c.jpeg "Colin Jones UK MET Office") ](https://www.youtube.com/watch?v=rZXoFJDjjPQ)

# Location

Weston Theatre (and online). See the [main workshop help topic for zoom details](https://forum.access-hive.org.au/t/workshop-information-everything-you-need-to-know/1172#zoom-details-3).

# Time

5:00-5:30pm

# Abstract

# Feedback

If you want to ask questions of the speaker **you must reply to this topic**. We encourage all speakers and attendees to continue fruitful discussions in replies to this topic for as long as they wish (weeks, years ..). This topic will remain available for as long as this site exists.

**Note:** This topic is part of the [2023 ACCESS Community Workshop](https://forum.access-hive.org.au/c/access-workshop-2023/61) main session

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**Author:** ![system](https://us1.discourse-cdn.com/flex020/uploads/access1/original/1X/d8217396f46876e65685c86067b9f8c89d230627.png) [@system](https://forum.access-hive.org.au/u/system)\
**Post date:** [5 September 2023 06:50 UTC](https://forum.access-hive.org.au/t/initial-plans-in-the-uk-for-cmip7-and-the-physical-hadgem3-and-earth-system-ukesm2-models-intended-for-cmip7/1201/2 "2023-09-05T06:50:17Z")

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**Author:** ![Aidan](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.access-hive.org.au/aidan/32/42_2.png) [@Aidan](https://forum.access-hive.org.au/u/Aidan)\
**Post date:** [5 September 2023 07:33 UTC](https://forum.access-hive.org.au/t/initial-plans-in-the-uk-for-cmip7-and-the-physical-hadgem3-and-earth-system-ukesm2-models-intended-for-cmip7/1201/3 "2023-09-05T07:33:29Z")

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@AndyHoggANU Does hybrid perform well?

> Answer: running at N216 is slightly worse, because it has been developed at N96. Hybrid, N96 Chem and N216 Physics gives an improvement.

> Most of this development is in the trunk. Will be released in due course.

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**Author:** ![Aidan](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.access-hive.org.au/aidan/32/42_2.png) [@Aidan](https://forum.access-hive.org.au/u/Aidan)\
**Post date:** [5 September 2023 07:33 UTC](https://forum.access-hive.org.au/t/initial-plans-in-the-uk-for-cmip7-and-the-physical-hadgem3-and-earth-system-ukesm2-models-intended-for-cmip7/1201/4 "2023-09-05T07:33:34Z")

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@MartinDix Is N48 being developed?

> Yes there is an v1.1 N48 version. Acceptable performance. Does exist. Will try to make UKESM fast version available. Technical aspect understood, tuning aspects can be trickier. Constrained by available people

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**Author:** ![Aidan](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.access-hive.org.au/aidan/32/42_2.png) [@Aidan](https://forum.access-hive.org.au/u/Aidan)\
**Post date:** [5 September 2023 07:35 UTC](https://forum.access-hive.org.au/t/initial-plans-in-the-uk-for-cmip7-and-the-physical-hadgem3-and-earth-system-ukesm2-models-intended-for-cmip7/1201/5 "2023-09-05T07:35:53Z")

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@JulieA Why didn’t do transient runs?

> Not my choice. Feeling that using information from forced signal in historical record pollutes results. Don’t necessarily agree.

> Historical evolution is a weak constraint on evaluation. Avoid using historical temperature record or anything affected by historical CO2
