[Liwg-core] melt bias in 126

Marcus Löfverström marcusl at ucar.edu
Fri Jan 13 10:11:25 MST 2017


Definitely

On Fri, Jan 13, 2017 at 10:07 AM, Miren Vizcaino <M.Vizcaino at tudelft.nl>
wrote:

> Thank you, Marcus.
> I suppose this implies that we need to closely monitor Greenland climate
> in the ongoing 126?
> Miren
>
> Sent from my iPhone
>
> On 13 Jan 2017, at 17:44, Marcus Löfverström <marcusl at ucar.edu> wrote:
>
> Hi Miren,
>
> a part of the problem is likely the changes in subgrid topography in
> Greenland. Here is a snippet from an email from Julio to the CESM
> developers:
>
> "126 with enhanced surface roughness around Greenland could be colder in
> the Labrador sea.  Marcus L. has seen cooling there in our F2000 cases.
> Let's see what it does to Lab sea ice."
>
> My understanding is that the Lab Sea is still behaving fairly well in the
> B-case they are currently running. Note, however, that this assessment is
> only based on a few decades worth of data so it could change in a longer
> simulation.
>
> // Marcus
>
>
> On Fri, Jan 13, 2017 at 9:23 AM, Miren Vizcaino <M.Vizcaino at tudelft.nl>
> wrote:
>
>> dear all,
>>
>> Unfortunately I missed the Wednesday telecom and I missed also the melt
>> problem, that came to me as a surprise today
>>
>> Jan: "Due to the latest CAM changes, the SST’s have cooled quite a bit in
>> the North Atlantic, and this made Greenland cooler as well, and reducing
>> melt significantly".
>>
>> do we know exactly the sources of the cold bias, and is this
>> substantially affecting other regions (e.g. Arctic sea ice?)? are others
>> out of the LIWG aware/concerned about the cold SSTs ?
>>
>> thanks, cheers, miren
>>
>> _______________________________________________
>> Liwg-core mailing list
>> Liwg-core at cgd.ucar.edu
>> http://mailman.cgd.ucar.edu/mailman/listinfo/liwg-core
>>
>
>
>
> --
> Marcus Löfverström (PhD)
> Post-doctoral researcher
> National Center for Atmospheric Research
> 1850 Table Mesa Dr.
> 80305 Boulder, CO, USA
>
> https://sites.google.com/site/lofverstrom/
>
>


-- 
Marcus Löfverström (PhD)
Post-doctoral researcher
National Center for Atmospheric Research
1850 Table Mesa Dr.
80305 Boulder, CO, USA

https://sites.google.com/site/lofverstrom/
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