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

[Suryachandra Rao]

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

----- Forwarded Message -----
From: "James Kinter" <kinter at cola.iges.org>
To: "Suryachandra Rao" <surya at tropmet.res.in>
Cc: "Larry Marx" <marx at cola.iges.org>
Sent: Sunday, February 16, 2014 7:08:45 PM
Subject: Re: Bug which caused CFSv2 giving different results when layout or/and no procs for ocean model was changed.

Dear Surya - Yes of course we can share the CFSv2 coding change with you. That was the intent of my earlier communication with Dr. Goswami. I believe the best way is for Larry Marx to get in touch with you (or whomever is best to receive information about the necessary source code changes). My recollection is that there are not a lot of lines to change. As Dr. Moorthi reported, we also had informed them about this error as soon as we had a complete diagnosis and fix, but NCEP decided that they cannot make use of the change since changing the operational code would mean also re-running the re-forecasts. 


Yes, please do add my email address to the monsoon desk list. Please use my GMU email: ikinter at gmu.edu (and yes, it really is “i” kinter!). Thanks. Best regards. — Jim 

























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Jim Kinter, Director 
Center for Ocean-Land-Atmosphere Studies 
Professor, Climate Dynamics 
Dept. of Atmospheric, Oceanic & Earth Sciences 
284 Research Hall, Mail Stop 6C5 








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On 16Feb2014, at 1:20 AM, Suryachandra Rao < surya at tropmet.res.in > wrote: 




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 

----- Forwarded Message ----- 
From: "Suryachandra Rao" < surya at tropmet.res.in > 
To: "Shrinivas Moorthi - NOAA Federal" < shrinivas.moorthi at noaa.gov >, kinter at cola.iges.edu , marx at cola.iges.edu 
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 >, "Prajeesh A.G CAT" < prajeesh.cat at tropmet.res.in > 
Sent: Sunday, February 16, 2014 11:39:34 AM 
Subject: Re: Bug which caused CFSv2 giving different results when layout or/and no procs for ocean model was changed. 

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