[Ncep.list.emc.monsoondesk] Bug which caused CFSv2 giving different results when layout or/and no procs for ocean model was changed.

Sun Feb 16 15:15:22 UTC 2014

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
Fax : +91 20 25865142
Mobile:+91 9423582314

----- Original Message -----
From: "Shrinivas Moorthi - NOAA Federal" <shrinivas.moorthi at noaa.gov>
To: "Suryachandra Rao" <surya at tropmet.res.in>
Cc: kinter at cola.iges.edu, marx at cola.iges.edu, "gibies george" <gibiesgeorge at gmail.com>, "Roxy Mathew" <roxy at tropmet.res.in>, "Swapna P" <swapna at tropmet.res.in>, "Dr. K Ashok" <ashok at tropmet.res.in>, "SujithKrishna" <sujith at tropmet.res.in>, "Sabeerali C. T." <sabeer at tropmet.res.in>, "monsoon desk" <monsoon.desk at tropmet.res.in>, "Xingren Wu - NOAA Affiliate" <Xingren.Wu at noaa.gov>, "Prajeesh A.G CAT" <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 > 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 

----- Original Message ----- 
From: "Shrinivas Moorthi - NOAA Federal" < shrinivas.moorthi at noaa.gov > 
To: "Prajeesh A.G CAT" < prajeesh.cat at tropmet.res.in > 
Cc: gibiesgeorge at gmail.com , "Roxy Mathew" < roxy at tropmet.res.in >, "Swapna P" < swapna at tropmet.res.in >, "Dr. K Ashok" < ashok at tropmet.res.in >, "SujithKrishna" < sujith at tropmet.res.in >, "Sabeerali C. T." < sabeer at tropmet.res.in >, "monsoon desk" < monsoon.desk at tropmet.res.in >, "Xingren Wu - NOAA Affiliate" < 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 > 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 

e-mail: 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 

e-mail: Shrinivas.Moorthi at noaa.gov 
Phone: (301) 683-3718 Fax: (301) 683-3718 