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Thread 'HadSM3dhet2'

Thread 'HadSM3dhet2'

Message boards : Number crunching : HadSM3dhet2
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old_user353238

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Message 38156 - Posted: 21 Oct 2009, 11:14:17 UTC

Noticed a few slab models have been downloaded over the last couple of days with the new identifier \"dhet2\".
So, got one myself to try. One new Perturbed Parameter \"CO2 mass mising (sic) ratio for phase 3\" in place of the usual
bunch listed in the long established \"HadSM3fub\" variants.

Have these dhet2_ slabs now replaced fub_ versions?

Understood more new models were planned for the public project soon. Is this the first of these?

Just curious.
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DJStarfox

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Message 38158 - Posted: 21 Oct 2009, 13:53:57 UTC - in response to Message 38156.  

I don\'t see an example of what you\'re talking about from any of your active computers. Do you have a link to the WU in question that is hadSM3dhet2?

Also, just my first guess, these models are simply different parameters but the same model type and length of run.

There is a vastly different climate model that programmers are working on now, but no word on when that will be ready for public crunching. I\'m sure there will be news released on this forum when those models are finally available.
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Message 38159 - Posted: 21 Oct 2009, 15:51:21 UTC - in response to Message 38158.  

I don\'t see an example of what you\'re talking about from any of your active computers. Do you have a link to the WU in question that is hadSM3dhet2?

Also, just my first guess, these models are simply different parameters but the same model type and length of run.

There is a vastly different climate model that programmers are working on now, but no word on when that will be ready for public crunching. I\'m sure there will be news released on this forum when those models are finally available.

Here is the link (sorry, it\'s in my other account) - http://climateapps2.oucs.ox.ac.uk/cpdnboinc/result.php?resultid=10449968.

The HadSM3fub slab variant was first released in June 2007.
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DJStarfox

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Message 38161 - Posted: 21 Oct 2009, 19:29:39 UTC - in response to Message 38159.  

These might be the additional batch they generated a couple of weeks ago. There was a point (can\'t remember if last week or week before) that the number of tasks ready to send was below 50k. Soon afterward, the number jumped to over 500k tasks ready to send. They must have generated a lot more to do.

You need someone else to explain the differences between these two types of SM3 models, because I don\'t know.
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ProfileIain Inglis

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Message 38163 - Posted: 21 Oct 2009, 21:43:09 UTC - in response to Message 38161.  

[DJStarfox wrote:] You need someone else to explain the differences between these two types of SM3 models, because I don\'t know.

We\'re looking into it!
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ProfileIain Inglis

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Message 38165 - Posted: 22 Oct 2009, 11:18:50 UTC

A description is now available in the news thread, here.
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DJStarfox

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Message 38166 - Posted: 22 Oct 2009, 13:51:03 UTC - in response to Message 38165.  

A description is now available in the news thread, here.


Cool. It looks like a bunch of models to validate the science behind the other model.

My intuition tells me that climate temperature change is NOT linear with CO2, but there is a complex relationship between the two. This relationship is more of a \"balance equations\" variety, similar to a buffered solution in chemistry. There are forces increasing and decreasing climate temperature, and if these forces remain in a range of values, then the system will be stable. The question ultimately will be, what\'s the max before the earth warms too much? Or, can we plant enough trees to offset the industrial output?

I admit I first need to do a literature review of CO2 pollution before I make any claims here. :)
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