Monsoon Mission Coupled Forecast System Version 2.0: Model Description and Indian Monsoon Simulations

Jain, Deepeshkumar; Rao, Suryachandra A.; Dandi, Ramu; Pillai, Prasanth A.; Srivastava, Ankur; Pradhan, Maheshwar

doi:https://doi.org/10.5194/gmd-2023-53

Preprints

https://doi.org/10.5194/gmd-2023-53

Preprints

Submitted as: model evaluation paper

04 Apr 2023

Submitted as: model evaluation paper |

| 04 Apr 2023

Status: this preprint is currently under review for the journal GMD.

Monsoon Mission Coupled Forecast System Version 2.0: Model Description and Indian Monsoon Simulations

Deepeshkumar Jain, Suryachandra A. Rao, Ramu Dandi, Prasanth A. Pillai, Ankur Srivastava, and Maheshwar Pradhan

Abstract. We describe the Monsoon Mission Coupled Forecast System version 2 (MMCFSv2) model, which substantially upgrades the present operational MMCFSv1 (version 1) at the India Meteorology Department. We evaluate MMCFSv2 based on the latest 25 years (1998–2022) of retrospective coupled hindcast simulations of the Indian Summer Monsoon with April initial conditions from Coupled Forecast System Reanalysis. MMCFSv2 simulates the tropical wind, rainfall, and temperature structure reasonably well. MMCFSv2 captures surface winds well and reduces precipitation biases over land, except in India and North America. The dry bias over these regions remained similar to MMCFSv1. MMCFSv2 captures significant features of the Indian monsoon, including the intensity and location of the maximum precipitation centres and the large-scale monsoon circulation. MMCFSv2 improves the phase skill (anomaly correlation coefficient) of the interannual variation of ISMR by 17 % and enhances the amplitude skill (Normalized Root Mean Square Error) by 20 %. MMCFSv2 shows improved teleconnections of ISMR with the equatorial Indian and Pacific oceans. This 25-year hindcast dataset will serve as the baseline for future sensitivity studies of MMCFSv2.

Received: 08 Mar 2023 – Discussion started: 04 Apr 2023

Deepeshkumar Jain et al.

Status: open (until 18 Jun 2023)

Post a comment Subscribe to comment alert

CEC1:
'Comment on gmd-2023-53', Juan Antonio Añel, 05 May 2023 reply

Dear authors,
Unfortunately, after checking your manuscript, it has come to our attention that it does not comply with our "Code and Data Policy".

https://www.geoscientific-model-development.net/policies/code_and_data_policy.html
In your manuscript, you state that "MMCFSv2 and the model data used for this study is available on Indian Institute

of Tropical Meteorology High Performance Computer (IITM-HPC)". This does not comply with our policy. You must publish your code and data in one of the appropriate repositories that we list.
I should note that, actually, your manuscript should not have been accepted in Discussions, given this lack of compliance with our policy. Therefore, the current situation with your manuscript is irregular. In this way, if you do not fix this problem in a prompt manner, we will have to reject your manuscript for publication in our journal.
Therefore, please, publish your code in one of the appropriate repositories, and reply to this comment with the relevant information (link and DOI), as it should be available for the Discussions stage. Also, please, include the relevant primary input/output data.
Also, you must include in a potentially reviewed version of your manuscript the modified 'Code and Data Availability' section, the DOI of the code and data repositories.
In this case, and given that currently the code is not shared in any repository, I have to emphasize that your manuscript will be rejected for publication if you fail to comply with our request.
Juan A. Añel

Geosci. Model Dev. Exec. Editor

Reply

Citation: https://doi.org/10.5194/gmd-2023-53-CEC1
- AC1:
  'Reply on CEC1', Anguluri Suryachandra rao, 05 May 2023 reply
  
  Dear Editor,
  We have uploaded the model code to the public repository at
  https://github.com/deepeshkumar-tropmet/MMCFSv2
  We have also uploaded the model output used for the analysis presented in this manuscript at
  https://zenodo.org/record/7900790#.ZFU-T5FBxcA (DOI 10.5281/zenodo.7900790)
  The input data to the model is available at CFSR website
  https://www.ncei.noaa.gov/data/climate-forecast-system/access/operational-analysis/initial-conditions-high-resolution/
  I am unsure if I can attach a revised version of the manuscript along with this reply as it is mentioned here not to.
  Request you to please let me know how do I update the manuscript.
  Thanking You,
  Regards,
  Deepeshkumar Jain
  
  Reply
  
  Citation: https://doi.org/10.5194/gmd-2023-53-AC1
  - CEC2: 'Reply on AC1', Juan Antonio Añel, 06 May 2023 reply
    
    Dear authors,
    Thank you for your quick reply to our request. However, unfortunately, again, I have to insist that you do not comply with our policy. And I have to say that it is quite disappointing, given that I have pointed you to the policy in my previous comment, which it is clear you have obviated and not read carefully.
    For example, you have archived your code on GitHub. However, GitHub is not a suitable repository for scientific publication. GitHub itself instructs authors to use other alternatives for long-term archival and publishing, such as Zenodo. Our policy clearly says "Project or institution websites and online revision control sites such as GitHub, GitLab or Bitbucket are made for code development but not suitable for archiving frozen code versions."
    Therefore, please, publish your code in one of the appropriate repositories, and reply to this comment with the relevant information (link and DOI) as soon as possible.
    Also, the input data are stored in noaa.gov servers. This is not a suitable repository. Given that the files there are a few GB, there is no reason not to store them in one of the repositories that we can accept and are listed in our policy. However, I have to note that according to your manuscript, you perform hindcast experiments for the period 1998-2022, and in the NOAA repository that you have linked, there are data only from 2011. What is worse, for many of the years, the repository says that for many years the files have been removed and moved to a different web address. Please, double-check this, and provide a new repository, its link and DOI with all the necessary input data.
    To clarify things, it is not necessary at this stage that you upload a modified version of your manuscript. Simply post the information here in the Discussions. If, eventually, the Handling Topical Editor considers that your manuscript deserves to continue through the review process or acceptance for publication, you will be able to upload a new version of the manuscript, which should include the new information about the repositories, DOIs, links, etc.
    Juan A. Añel
    
    Geosci. Model Dev. Exec. Editor
    
    Reply
    
    Citation: https://doi.org/10.5194/gmd-2023-53-CEC2
    
    CEC3: 'Reply on CEC2', Juan Antonio Añel, 06 May 2023 reply
    
    Dear authors,
    I forgot to add in my other reply to this comment that in the GitHub repository where you have published your model, there is no license listed. If you do not include a license, despite what you intend, the code is not "free-libre open-source" (FLOSS); it continues to be your property, and nobody can use it or test it (which precludes the replicability of your work). Therefore, when uploading the model's code to the new repository, you could want to choose a FLOSS license. We recommend the GPLv3. You only need to include the file 'https://www.gnu.org/licenses/gpl-3.0.txt' as LICENSE.txt with your code. Also, you can choose other options that Zenodo provides: GPLv2, Apache License, MIT License, etc.
    Juan A. Añel
    Geosci. Model Dev. Exec. Editor
    
    Reply
    
    Citation: https://doi.org/10.5194/gmd-2023-53-CEC3
- AC2:
  'Reply on CEC1', Anguluri Suryachandra rao, 09 May 2023 reply
  
  Dear Editor,
  Please have a look at the coupled code structure in the supplementary file attached.
  
  A part of the code which is essential for coupling MOM6, CICE5, and GFS-SL together using NEMS framework
  
  is made available at Zenodo Data server (https://doi.org/10.5281/zenodo.7914786).
  
  The coupled model consists of MOM6, CICE5, and GFS-SL as its components.
  
  Each of these model components codes (MOM6, CICE5, GFS-SL, and NEMS)
  
  are governed by their respective licenses and we cannot provide
  
  a license that overrides these licenses. The license files can be found in their respective folders.
  
  MOM6 model code is available under LGPLv3 license at https://github.com/mom-ocean/MOM6.
  
  CICE model is available under "CICE Consortium" license (detailed license file is
  
  LICENSE.pdf inside CICE folder). The code and license are available at github.com/CICE-Consortium (now upgraded
  
  to version 6.0). CICE version 5 (used in MMCFSv2) is available at https://github.com/COSIMA/cice5
  
  To the best of our knowledge (from the code), the GFS-SL code comes under GPLv3 License.
  
  The GFS-SL code used in the MMCFSv2 for this study was downloaded from
  
  https://www.nco.ncep.noaa.gov/pmb/codes/nwprod/
  
  They (NCEP) have now upgraded it (GFS) to finite volume version of the model.
  
  I will need permission from NCEP if the GFS-SL code needs to be shared.
  
  The NOAA Earth System Modelling Framework available at https://github.com/NOAA-EMC/NEMS
  
  also comes under Lesser General Public License v3.0.
  
  The NEMS framework allows numerous component models to be coupled together
  
  (please refer to the supplementary image file).
  
  The complete list of allowed components can be found at NEMS/src/makefile.
  
  A choice is to be made regarding the component models to be coupled together.
  
  The component models are then coupled to NEMS coupler using a CAP code.
  
  The CICE_CAP code used for coupling the CICE code with NEMS coupler can be found at
  
  https://earthsystemmodeling.org/docs/nightly/develop/cice/structcice__cap__mod_1_1cice__internalstate__type.html
  
  The MOM6 CAP code used for coupling the ocean model with NEMS coupler can be found at
  
  https://ncar.github.io/MOM6/APIs/mom__cap_8F90_source.html
  
  The GSM CAP code for coupling GFS-SL with NEMS coupler was developed by NCEP and can be found in the
  
  GSM directory of the uploaded code.
  
  These cap codes, once compiled along with their component model codes are ready to be coupled to NEMS framework.
  
  There are *.mk files associated with each component (GSM-INSTALL/gsm.mk, MOM6-INSTALL/mom6.mk, ../CICE-INSTALL/cice.mk) that
  
  needs to be modified accordingly and the paths of these files need to be specified at NEMS/src/conf/configure.nems.NUOPC
  
  file.
  
  We would be happy to provide the complete coupled code for review purposes. However, putting a gplv3 license
  
  above the entire MMCFSv2 code is beyond our powers as the component models belong to their respective groups and are
  
  governed by their respective licenses.
  
  The initial condition files for running the model (from 1998-2010) are available at
  
  UCAR website with DOI: 10.5065/D69K487J (https://rda.ucar.edu/datasets/ds093.0/dataaccess/)
  
  and from 2011-2022 at DOI: 10.5065/D61C1TXF (https://rda.ucar.edu/datasets/ds094-0/).
  
  We have run the model for 25 years, each year having 10 ensembles. Each ensemble's
  
  initial condition file size is approximately 1.6GB. So, the total size of the initial files downloaded
  
  from NCEP-CFSR for a total of 250 ensembles is 400GB. Since the data is
  
  publically available freely at the above mentioned
  
  DOI's, it will be unreasonable (as well as might be restricted by NCEP)
  
  to upload them again on a public server. Most of the open data
  
  servers have size limits well below 400GB. Should the necessity arise for review purposes,
  
  we shall be able to make available the files for the particular years of interest.
  
  The model output is compared with ERA5, GPCP, and IMD data.
  
  Each of these datasets has their own terms of use and belong to their
  
  respective organizations. Processed data that is used in the manuscript is
  
  made available for the years 1998-2022 at Zenodo's server
  
  (https://doi.org/10.5281/zenodo.7913886).
  Thanks and Regards,
  Deepeshkumar Jain
  
  Reply
  
  Citation: https://doi.org/10.5194/gmd-2023-53-AC2
  - CEC4: 'Reply on AC2', Juan Antonio Añel, 10 May 2023 reply
    
    Dear authors,
    Thanks for your new reply. We appreciate that you have published in Zenodo the code for MOM6, CICE5, and GFS-SL.
    I should note again that the remainder of your reply, discussing GitHub repositories and other servers, does not add anything to this Discussion. It must be clear that they are not acceptable repositories, so discussing them only adds noise to a situation where we have to elucidate if your manuscript complies with our policy and if we can continue with the review process or if, on the other hand, we have to reject your manuscript. Therefore, for the remainder of this discussion, please, avoid mentioning such sites, as it only complicates the understanding of the situation regarding your work.
    For the input data, 400 GB is not an unreasonable size to share. For example, Zenodo admits up to 50 GB. You can even create a repository and DOI for each member of the ensemble. Therefore, you should publish them. Also, we do not accept that data is accessible "if it is necessary for the review process". Actually, such a thing does not apply here. Our journal has an open discussion process, where anyone should be able to review a manuscript and access all the assets of the works anonymously. All the necessary assets (code and data) have to be published upfront at the moment of submission.
    Also, in your reply, you state that you can not publish MMCFSv2, that it is " beyond our powers". I am not familiar with the MMCFSv2 code. Therefore, to be able to assess if we can accept an exception regarding your manuscript and this model, we need clarification of several issues:
    - how it is developed, who is/are the developers and owners of its copyright?
    - how is its license established or decided? This is to make sure that for example, a law, forbids you of publishing the model or that there is another reasonable reason why you can not publish it.
    - which is the current license of the MMCFSv2?
    I make clear that we are not asking you to relicense the model. You could publish it with its current license.
    Also, despite you are not publishing MMCFSv2, at minimum, please, provide us with details about where you store internally the model's code.
    Regards,
    Juan A. Añel
    Geosci. Model Dev. Executive Editor
    
    Reply
    
    Citation: https://doi.org/10.5194/gmd-2023-53-CEC4
    
    AC3: 'Reply on CEC4', Anguluri Suryachandra rao, 19 May 2023 reply
    
    Dear Editor,
    We are uploading the processed input data used for the MMCFSv2 simulations (processed to regrid it to model resolution) at Zenodo's server.
    Please find below the link to the data from 1998 to 2012. Input data from 2013 to 2022 is being uploaded. Its taking a lot of time to upload. Request you few more days to complete the upload.
    Input data from 1998-2000 - https://doi.org/10.5281/zenodo.7935628
    Input data from 2001-2003 - https://doi.org/10.5281/zenodo.7947318
    Input data from 2004-2006 - https://doi.org/10.5281/zenodo.7947974
    Input data from 2007-2009 - https://doi.org/10.5281/zenodo.7948155
    Input data from 2010-2012 - https://doi.org/10.5281/zenodo.7949802
    The model code in full is made available at https://doi.org/10.5281/zenodo.7905721
    The model was built by bringing together four major components -
    a) GFS-SL (gplv3 license) - owner is NCEP
    b) NEMS Coupler (lgplv3 license) - owner is NOAA - (maintained on github by them unfortunately)
    c) MOM6 ocean model (lgplv3 license) - owner is GFDL, Princeton (maintained on github by them)
    d) CICE5 ice model (CICE Consortium license) - owner is LANL (again maintained on github by LANL)
    All the individual model component codes mentioned above allow
    
    for code modification and redistribution as long as we include their respctive license
    
    files along with the code. We have uploaded these license files along with the model code
    
    (both our own code, and the full code).
    We are not the owners of the above mentioned code bases.
    We downloaded these models and wrote/modified the scripts and code to make the coupled runs possible.
    Our own contribution to MMCFSv2 code is uploaded
    at https://doi.org/10.5281/zenodo.7914786 along with all the license files of the individual models.
    We are ready to put our own contributions under gplv3 license and the above mentioned
    components will continue under their respective groups licenses.
    Thanks and Regards,
    Deepeshkumar Jain
    
    Reply
    
    Citation: https://doi.org/10.5194/gmd-2023-53-AC3
    
    AC4: 'Reply on AC3', Anguluri Suryachandra rao, 20 May 2023 reply
    
    Please find the complete processed data that we used to initialize and run the MMCFSv2 simulations from 1998 to 2022 at below mentioned repositories
    Input data from 1998 to 2000 - https://doi.org/10.5281/zenodo.7935628
    Input data from 2001 to 2003 - https://doi.org/10.5281/zenodo.7947318
    Input data from 2004 to 2006 - https://doi.org/10.5281/zenodo.7947974
    Input data from 2007 to 2009 - https://doi.org/10.5281/zenodo.7948155
    Input data from 2010 to 2012 - https://doi.org/10.5281/zenodo.7949802
    Input data from 2013 to 2015 - https://doi.org/10.5281/zenodo.7950855
    from 2016-2018 - https://doi.org/10.5281/zenodo.7949863
    from 2019-2021 - https://doi.org/10.5281/zenodo.7950964
    and Input for for 2022 - https://doi.org/10.5281/zenodo.7951983
    Please note that the original raw data belongs to NCEP (Saha, Suranjana, and Coauthors, 2010: The NCEP Climate Forecast System Reanalysis. Bull. Amer. Meteor. Soc., 91, 1015–1057. https://doi.org/10.1175/2010BAMS3001.1).
    Thanks and Regards,
    Deepeshkumar Jain
    
    Reply
    
    Citation: https://doi.org/10.5194/gmd-2023-53-AC4
    
    CEC5: 'Reply on AC3', Juan Antonio Añel, 21 May 2023 reply
    
    Dear authors,
    Many thanks for your reply and for sharing the necessary code and data. We can now consider the current version of your manuscript compliant with our Code and Data Policy.
    Please, do not forget to include in any potentially reviewed version of your manuscript all the information on repositories and versions posted here in Discussions.
    Regards,
    Juan A. Añel
    Geosci. Model Dev. Executive Editor
    
    Reply
    
    Citation: https://doi.org/10.5194/gmd-2023-53-CEC5
    
    AC5: 'Reply on CEC5', Anguluri Suryachandra rao, 24 May 2023 reply
    
    Thank you for considering the manuscript for discussions.
    Thanks and Regards,,
    Deepeshkumar Jain
    
    Reply
    
    Citation: https://doi.org/10.5194/gmd-2023-53-AC5

Deepeshkumar Jain et al.

Viewed

Total article views: 399 (including HTML, PDF, and XML)

HTML	PDF	XML	Total	BibTeX	EndNote
311	63	25	399	2	1

HTML: 311
PDF: 63
XML: 25
Total: 399
BibTeX: 2
EndNote: 1

Views and downloads (calculated since 04 Apr 2023)

Month	HTML	PDF	XML	Total
Apr 2023	159	30	4	193
May 2023	142	32	21	195
Jun 2023	10	1	0	11

Cumulative views and downloads (calculated since 04 Apr 2023)

Month	HTML	PDF	XML	Total
Apr 2023	159	30	4	193
May 2023	142	32	21	195
Jun 2023	10	1	0	11

Viewed (geographical distribution)

Total article views: 384 (including HTML, PDF, and XML) Thereof 384 with geography defined and 0 with unknown origin.

Country	#	Views	%

Latest update: 05 Jun 2023

Short summary

The present manuscript discusses and evaluates the new Monsoon Mission Coupled Forecast System model version 2.0 which upgrades the currently operational MMCFSv 1.0 at Indian Meteorological Department, India. The individual model components have been substantially upgraded independently by their respective scientific groups. MMCFSv2 includes these upgrades into the operational coupled model. There is a significant skill improvement in simulating the Indian monsoon by the new model.


Total:	0
HTML:	0
PDF:	0
XML:	0