[Ncep.list.emc.monsoondesk] Bug which caused CFSv2 giving different results when layout or/and no procs for ocean model was changed.
Shrinivas Moorthi
shrinivas.moorthi at noaa.gov
Tue Feb 18 12:50:59 UTC 2014
Dear Surya,
Attached are the two files (under the directory
cfs_ocean_mom4ice.fd/src/ice_sis) with correction.
Note that we are not using this correction in the operational CFS since
the hindcasts were made with the bug, and hopefully,
the bias correction would reduce the impact of the bug (we are using the
same number of OM tasks on our new machine as before).
Regards,
Moorthi
On 02/16/2014 11:35 PM, Suryachandra Rao wrote:
>
> Dear Jim
>
> Monsoon desk email list is one of that effort. NCEP has setup a
> monsoon desk website and keeping whatever documents they have. We
> are also designed one Web page for monsoon mission and will be
> released soon in couple of weeks. If COLA also wish to contribute to
> this effort we will definitely welcome the same.
>
> Moorthi and Jim please send your modified codes. We will post them on
> our website together with our own modifications.
>
> Regards
> Surya
>
> On 17 Feb 2014 05:56, "James Kinter" <kinter at cola.iges.org
> <mailto:kinter at cola.iges.org>> wrote:
>
> Dear Moorthi - Although I think I have missed some of the email
> exchanges on this thread, I also agree with Dr. Sahai. It would
> not be too hard to set up a web site or other simple method to
> keep our respective groups informed of issues and/or corrections
> with the CFSv2 code. While I understand that any CFSv2 errors
> found cannot be changed in NCEP operations due to the expense of
> repeating the re-forecasts, there are active efforts underway in
> NCEP, COLA and IITM to further diagnose and improve the model, so
> keeping each other informed is a natural way to accelerate
> progress and avoid duplication of effort. If there is interest in
> this at NCEP and IITM, COLA would be happy to set something up
> (web page, Dropbox folder, Google docs site, etc.). Best regards.
> --- Jim
>
> ****************************************************
> Jim Kinter, Director
> Center for Ocean-Land-Atmosphere Studies
> Professor, Climate Dynamics
> Dept. of Atmospheric, Oceanic & Earth Sciences
> 284 Research Hall, Mail Stop 6C5
> George Mason University
> 4400 University Drive
> Fairfax, VA 22030 USA
> -----------------------------------------------------------------
> tel: (703) 993-5700 ******* fax: (703) 993-5770
> email: ikinter at gmu.edu <mailto:ikinter at gmu.edu> ***
> http://www.iges.org
> *****************************************************
>
> On 16Feb2014, at 11:58 AM, Shrinivas Moorthi - NOAA Federal
> <shrinivas.moorthi at noaa.gov <mailto:shrinivas.moorthi at noaa.gov>>
> wrote:
>
>> Dear Dr. Sahai,
>> You are absolutely right.
>> Regards,
>> Moorthi
>>
>>
>> On Sun, Feb 16, 2014 at 10:15 AM, Dr. A.K.Sahai
>> <sahai at tropmet.res.in <mailto:sahai at tropmet.res.in>> wrote:
>>
>> Dear Dr. Moorthi,
>>
>> The issue is not that Larry(COLA) has identified the bug
>> first or Prajeesh(IITM) has identified first and also is not
>> that it was informed to IITM or not. Even it has been
>> informed to IITM then there are different groups working on
>> CFS and it is not possible to inform all in bits and pieces.
>> Also how many bugs are still there? All these should be
>> documented properly. The lack of a proper documentation is
>> the main hurdle in implementation and development on CFS.
>> Therefore NCEP/COLA/IITM has to work collaboratively for the
>> proper documentation and if required IITM should send some
>> young scientists to COLA/NCEP for this very important work.
>>
>> Regards
>> Sahai
>>
>> ------------------------------------------
>> Dr. Atul Kumar Sahai
>> Scientist-F
>> Chief Project Scientist,Extended Range Prediction
>> Chief Project Scientist, High Performance Computing
>> Indian Institute of Tropical Meteorology
>> Ministry of Earth Sciences
>> Dr. Homi Bhabha Road, Pashan, Pune
>> 411 008, INDIA
>> Phone:+91 20 25904520 <tel:%2B91%2020%2025904520>
>> Fax : +91 20 25865142 <tel:%2B91%2020%2025865142>
>> Mobile:+91 9423582314 <tel:%2B91%209423582314>
>>
>> ----- Original Message -----
>> From: "Shrinivas Moorthi - NOAA Federal"
>> <shrinivas.moorthi at noaa.gov <mailto:shrinivas.moorthi at noaa.gov>>
>> To: "Suryachandra Rao" <surya at tropmet.res.in
>> <mailto:surya at tropmet.res.in>>
>> Cc: kinter at cola.iges.edu <mailto:kinter at cola.iges.edu>,
>> marx at cola.iges.edu <mailto:marx at cola.iges.edu>, "gibies
>> george" <gibiesgeorge at gmail.com
>> <mailto:gibiesgeorge at gmail.com>>, "Roxy Mathew"
>> <roxy at tropmet.res.in <mailto:roxy at tropmet.res.in>>, "Swapna
>> P" <swapna at tropmet.res.in <mailto:swapna at tropmet.res.in>>,
>> "Dr. K Ashok" <ashok at tropmet.res.in
>> <mailto:ashok at tropmet.res.in>>, "SujithKrishna"
>> <sujith at tropmet.res.in <mailto:sujith at tropmet.res.in>>,
>> "Sabeerali C. T." <sabeer at tropmet.res.in
>> <mailto:sabeer at tropmet.res.in>>, "monsoon desk"
>> <monsoon.desk at tropmet.res.in
>> <mailto:monsoon.desk at tropmet.res.in>>, "Xingren Wu - NOAA
>> Affiliate" <Xingren.Wu at noaa.gov
>> <mailto:Xingren.Wu at noaa.gov>>, "Prajeesh A.G CAT"
>> <prajeesh.cat at tropmet.res.in
>> <mailto:prajeesh.cat at tropmet.res.in>>
>> Sent: Sunday, February 16, 2014 7:10:38 AM
>> Subject: Re: Bug which caused CFSv2 giving different results
>> when layout or/and no procs for ocean model was changed.
>>
>>
>>
>>
>> Surya,
>> We do have a fixed version of this code and I could send the
>> routines that are fixed if you wish.
>> Moorthi
>>
>>
>>
>>
>> On Sun, Feb 16, 2014 at 1:09 AM, Suryachandra Rao <
>> surya at tropmet.res.in <mailto:surya at tropmet.res.in> > wrote:
>>
>>
>> Dear JIm,
>>
>> Please have a look at the following discussion. You have
>> mentioned once that you have informed Prof. Goswami about
>> some bug that is impacting AMOC in CFS V2.
>> Can you please share the bug fix with this group. Are you
>> part of the monsoon desk emailing list? If not, we can add
>> your group to the list.
>>
>> Regards
>> Surya
>>
>>
>>
>>
>>
>> Dr. Suryachandra A. Rao
>> Chief Scientist
>> Program on Development of Seasonal Prediction System
>> Indian Institute of Tropical Meteorology
>> Pashan, Pune -411 008, India
>> Phone: +91-2025904245 <tel:%2B91-2025904245>
>>
>> ----- Original Message -----
>> From: "Shrinivas Moorthi - NOAA Federal" <
>> shrinivas.moorthi at noaa.gov <mailto:shrinivas.moorthi at noaa.gov> >
>> To: "Prajeesh A.G CAT" < prajeesh.cat at tropmet.res.in
>> <mailto:prajeesh.cat at tropmet.res.in> >
>> Cc: gibiesgeorge at gmail.com <mailto:gibiesgeorge at gmail.com> ,
>> "Roxy Mathew" < roxy at tropmet.res.in
>> <mailto:roxy at tropmet.res.in> >, "Swapna P" <
>> swapna at tropmet.res.in <mailto:swapna at tropmet.res.in> >, "Dr.
>> K Ashok" < ashok at tropmet.res.in <mailto:ashok at tropmet.res.in>
>> >, "SujithKrishna" < sujith at tropmet.res.in
>> <mailto:sujith at tropmet.res.in> >, "Sabeerali C. T." <
>> sabeer at tropmet.res.in <mailto:sabeer at tropmet.res.in> >,
>> "monsoon desk" < monsoon.desk at tropmet.res.in
>> <mailto:monsoon.desk at tropmet.res.in> >, "Xingren Wu - NOAA
>> Affiliate" < Xingren.Wu at noaa.gov <mailto:Xingren.Wu at noaa.gov> >
>> Sent: Sunday, February 16, 2014 5:55:26 AM
>> Subject: Re: Bug which caused CFSv2 giving different results
>> when layout or/and no procs for ocean model was changed.
>>
>>
>>
>> This was a bug that was first identified by Larry Marx of
>> COLA. I was under the impression that COLA had informed IITM
>> about this. We have not corrected this bug in the operations
>> since the bug was also in the hindcasts.
>> Moorthi
>>
>>
>>
>>
>> On Sat, Feb 15, 2014 at 12:47 AM, Prajeesh A.G CAT <
>> prajeesh.cat at tropmet.res.in
>> <mailto:prajeesh.cat at tropmet.res.in> > wrote:
>>
>>
>>
>>
>> yeah, That is a better solution. anyway needs to be tested.
>>
>> Regards..
>>
>> Prajeesh A G
>> Scientist 'B'
>> CCCR, IITM
>> Pune, India
>>
>>
>>
>>
>>
>> --
>> Dr. Shrinivas Moorthi
>> Research Meteorologist
>> Global Climate and Weather Modeling Branch
>> Environmental Modeling Center / National Centers for
>> Environmental Prediction
>> 5830 University Research Court - (W/NP23), College Park MD
>> 20740 USA
>> Tel: (301)683-3718 <tel:%28301%29683-3718>
>>
>> e-mail: Shrinivas.Moorthi at noaa.gov
>> <mailto:Shrinivas.Moorthi at noaa.gov>
>> Phone: (301) 683-3718 <tel:%28301%29%20683-3718> Fax: (301)
>> 683-3718 <tel:%28301%29%20683-3718>
>>
>>
>>
>> --
>> Dr. Shrinivas Moorthi
>> Research Meteorologist
>> Global Climate and Weather Modeling Branch
>> Environmental Modeling Center / National Centers for
>> Environmental Prediction
>> 5830 University Research Court - (W/NP23), College Park MD
>> 20740 USA
>> Tel: (301)683-3718 <tel:%28301%29683-3718>
>>
>> e-mail: Shrinivas.Moorthi at noaa.gov
>> <mailto:Shrinivas.Moorthi at noaa.gov>
>> Phone: (301) 683-3718 <tel:%28301%29%20683-3718> Fax: (301)
>> 683-3718 <tel:%28301%29%20683-3718>
>>
>>
>>
>>
>> --
>> Dr. Shrinivas Moorthi
>> Research Meteorologist
>> Global Climate and Weather Modeling Branch
>> Environmental Modeling Center / National Centers for
>> Environmental Prediction
>> 5830 University Research Court - (W/NP23), College Park MD 20740 USA
>> Tel: (301)683-3718
>>
>> e-mail: Shrinivas.Moorthi at noaa.gov
>> <mailto:Shrinivas.Moorthi at noaa.gov>
>> Phone: (301) 683-3718 Fax: (301) 683-3718
>
--
Dr. Shrinivas Moorthi
Research Meteorologist
Global Climate and Weather Modeling Branch
Environmental Modeling Center / National Centers for Environmental Prediction
5830 University Research Court - (W/NP23), College Park MD 20740 USA
Tel:(301)683-3718
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