[Liwg-core] [Cesm2control] Current simulation: impact of ocn/ice initialization

Jean-Francois Lamarque lamar at ucar.edu
Tue Mar 14 09:51:47 MDT 2017


Thanks!

Jean-François

----------

Jean-François Lamarque
National Center for Atmospheric Research
P.O. Box 3000
Boulder, CO 80305
Tel: 303-4971495
*https://staff.ucar.edu/users/lamar <https://staff.ucar.edu/users/lamar>*

On Tue, Mar 14, 2017 at 9:26 AM, Jan Lenaerts <Jan.Lenaerts at colorado.edu>
wrote:

> Hi J-F,
>
> A quick update on the Greenland front - no big issues in these
> simulations. Find some numbers in attachment.
>
> An important notice for the spinup: to compensate for the unrealistic
> buildup of snow in the high Arctic in the offline CLM (driven by GSWP), we
> will require a ‘reset' of the CLM snow height in the beginning of the
> coupled PI spinup. We will convene tomorrow with the LIWG to determine the
> exact procedure, but we have strong evidence that this step is of vital
> importance for a realistic Greenland simulation, and we don’t think it will
> significantly affect the coupled simulation. We will be in touch on this
> later this week.
>
> Thanks,
>
> Jan
>
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> On 13 Mar 2017, at 22:12, Jean-Francois Lamarque <lamar at ucar.edu> wrote:
>
> Hi all
>
> it would be great to make a choice tomorrow on which configuration to use
> so
> please generate diagnostics and be prepared to provide input, either at
> the meeting
> or through email.  Slides are always most useful to help bring up a point
> and share
> the information. Thanks.
>
>
> Jean-François
>
> ----------
>
> Jean-François Lamarque
> National Center for Atmospheric Research
> P.O. Box 3000
> Boulder, CO 80305
> Tel: 303-4971495 <(303)%20497-1495>
> *https://staff.ucar.edu/users/lamar <https://staff.ucar.edu/users/lamar>*
>
> On Mon, Mar 13, 2017 at 3:01 PM, Cecile Hannay <hannay at ucar.edu> wrote:
>
> Here is a corrected table.
> For the run starting ocn/ice/atm from MP3, we should use 134.
> 134 doesn't use the same version of the land but it is as close as we can
> get if we want to look at a run starting from MP3 for ocn/ice/atm .
>
>
>
> <Screen Shot 2017-03-13 at 2.56.23 PM.png>
>>
>
> ++++++++++++++++++++++++++++++++++++++++++++
> Cecile Hannay
> National Center for Atmospheric Research
> email: hannay at ucar.edu
> phone: 303-497-1327 <(303)%20497-1327>
> webpage: http://www.cgd.ucar.edu/staff/hannay/
> ++++++++++++++++++++++++++++++++++++++++++++
>
>
> On Mon, Mar 13, 2017 at 2:35 PM, David Bailey <dbailey at ucar.edu> wrote:
>
> I've generated the ice diagnostics for 141 and 142 versus 140. I
> misunderstood the differences. I am now rerunning versus 136. What is
> interesting is that both 141 and 142 are thinner in the central Arctic
> compared to 140. 142 is slightly thicker. I assume this is related to the
> ice initialization.
>
> Dave
>
> http://webext.cgd.ucar.edu/B1850/b.e20.B1850.f09_g16.pi_cont
> rol.all.141/ice/b.e20.B1850.f09_g16.pi_control.all.141-b.e20
> .B1850.f09_g16.pi_control.all.140/yrs1-39/
>
> http://webext.cgd.ucar.edu/B1850/b.e20.B1850.f09_g16.pi_cont
> rol.all.142/ice/b.e20.B1850.f09_g16.pi_control.all.142-b.e20
> .B1850.f09_g16.pi_control.all.140/yrs1-41/
>
> On Mon, Mar 13, 2017 at 2:28 PM, Cecile Hannay <hannay at ucar.edu> wrote:
>
> Following last week discussion, we had runs testing the impact of the
> ocean and ice initialization.
> John is updating the ocean diags for these.
> Maybe Marika and Dave could look at the sea-ice.
>
>
> <Screen Shot 2017-03-13 at 2.25.34 PM.png>
>
>>
> ++++++++++++++++++++++++++++++++++++++++++++
> Cecile Hannay
> National Center for Atmospheric Research
> email: hannay at ucar.edu
> phone: 303-497-1327 <(303)%20497-1327>
> webpage: http://www.cgd.ucar.edu/staff/hannay/
> ++++++++++++++++++++++++++++++++++++++++++++
>
>
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> http://mailman.cgd.ucar.edu/mailman/listinfo/cesm2control
>
>
>
>
> --
>
> David A Bailey
>  email: dbailey_at_ucar.edu
> National Center for Atmospheric Research   phone: 303-497-1737
> <(303)%20497-1737>
> PO Box 3000
> fax  : 303-497-1700 <(303)%20497-1700>
> Boulder, CO 80307-3000
>                    http://www.cgd.ucar.edu/staff/dbailey
>
>
>
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>
> - - - - - - - - - - - - - - - - - - - - - - - - - - -
>
> *Jan Lenaerts  *IMAU, Utrecht University || University of Colorado
> @lenaertsjan <https://twitter.com/lenaertsjan> || website
> <http://www.colorado.edu/lab/icesheetclimate/>
>
>
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>
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