[Liwg-core] Good news: realistic GrIS ablation!; and next telecom

Jeremy Fyke garmeson.lanl at gmail.com
Fri Mar 10 09:10:17 MST 2017


Hey all,

Thanks for update, Miren!  A few follow-up questions:
-what maximum snow depth are you using here?
-what does downscaled SMB look like (which is ultimately what the ice sheet
will see)?

Jer

On Fri, Mar 10, 2017 at 8:59 AM, Lenaerts, J.T.M. (Jan) <j.lenaerts at uu.nl>
wrote:

> Hi Miren (and Raymond),
>
> Thanks for the message and all the work. This looks great and is
> consistent with what we saw earlier, with the additional improvement of the
> Northern Greenland bias with your suggested initialisation. I am really
> curious how this will look in the 20th century!
>
> I cannot make it next Wednesday but I am happy to discuss with Leo and/or
> you beforehand.
>
> All the best,
>
> Jan
>
>
>
> On 10 Mar 2017, at 14:29, Miren Vizcaino <M.Vizcaino at tudelft.nl> wrote:
>
> Dear All,
>
> This email contains two messages
>
> 1 - Good news. We have tried the new SCF with #134 and snow thickness
> reset to 1 m w.e. over the GrIS, and now CESM is able to realistically
> simulate the ablation areas at ALL ice sheet margins, including N and NE
> (see attached figure)!
> The reason for the differences with the “control” #134 presented by Leo at
> the meeting is that 1 m w.e. is below Wmax = 2 m w.e. The span-up #134
> snow/firn cover prevented thick snow/firn columns from ablating.
>
> Congratulations and many thanks to everybody, very specially to Leo the
> implementation of the SCF and to Raymond for his work on the impact of
> snow/firn initialization.
>
> 2 - I propose to have a telecom next Wednesday, e.g., to discuss how to
> spin-up the snow/firn pack in time for the official CESM2.0 pre-industrial
> BG control.
>
> Regards, Miren
>
>
>
>
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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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