.. _NICAM-DYAMOND-WINTER:

NICAM
========================================

**Provided by** Japan Agency for Marine-Earth Science and Technology (JAMSTEC), JP


Model description
-----------------

NICAM is a non-hydrostatic icosahedral atmospheric model (`Tomita and Satoh, 2004 <http://iopscience.iop.org/article/10.1016/j.fluiddyn.2004.03.003/meta>`__)
with an explicit cloud microphysics scheme (`Tomita, 2008 <https://www.jstage.jst.go.jp/article/jmsj/86A/0/86A_0_121/_article/-char/ja/>`__). 
The configuration used in the DYAMOND project is similar to that described by `Kodama et al. (2021) <https://gmd.copernicus.org/articles/14/795/2021/gmd-14-795-2021-discussion.html>`__.
Cloud-microphysics parameter settings were readjusted for improvement in representation of convective systems. 
The version NICAM.19 was used for the simulation, and the experiments were conducted on Fugaku. 


Experiment runs
-----------------


NICAM 3.5km atmosphere-only
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Location: 
        * :file:`/fastdata/ka1081/DYAMOND/data/winter_data/AORI/NICAM-3km/DW-ATM_non_standardized/` *(non-standardized data by AORI)*
        * :file:`/fastdata/ka1081/DYAMOND/data/winter_data/AORI/NICAM-3km/DW-ATM/` *(standardization by DKRZ is WIP)*

Setup: 
        Atmosphere-only

Resolution:
       * Horizontal resolution: 3.5km
       * Vertical resolution: 78 layers
       * Time step: 10s  

Comments:
       * The experiment was initialized from ERA5 atmospheric data on Jan 20,2020.
       * SST was fixed to daily SST data with linear interpolation. SST and sea ice were given from the data provided at: https://swiftbrowser.dkrz.de/public/dkrz_ee0fb9db-31e9-4c9e-87eb-eaeead11bed1/DYAMOND_PHASE2/ 
       * Initial condition of land was given from a 5-year climatology on January 15th of NICAM integration at approximately 56 km horizontal resolution. 
         Similar approach has been taken by `Kodama et al. (2021) <https://gmd.copernicus.org/articles/14/795/2021/gmd-14-795-2021-discussion.html>`__.
       * The non-standardized output data (:file:`/fastdata/ka1081/DYAMOND/data/winter_data/AORI/NICAM-3km/DW-ATM_non_standardized/`) is provided on the icosahederal grids on model levels. 
         Grid information that corresponds the model grids to lat-lon grids is provided in :file:`/fastdata/ka1081/DYAMOND/data/winter_data/AORI/NICAM-3km/DW-ATM_non_standardized/history/`

Data description: 
        :ref:`DYAMOND_WINTER-Models-NICAM-3km`

Contact person: 
        `Tamaki Suematsu (Riken) <tamaki.suematsu@riken.jp>`__ and `Chihiro Kodama (JAMSTEC) <kodamac@jamstec.go.jp>`__ 



NICAM 3.5km coupled
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Location: 
        * :file:`/fastdata/ka1081/DYAMOND/data/winter_data/AORI/NICAM-3km/DW-CPL_non_standardized/` *(non-standardized data by AORI)*
        * :file:`/fastdata/ka1081/DYAMOND/data/winter_data/AORI/NICAM-3km/DW-CPL/` *(standardization by DKRZ is WIP)*

Setup: 
        Coupled

Resolution:
       * Grid resolution for athmosphere: 3.5km horizontal and 78 vertical layers
       * Grid resolution for ocean:

Comments: 
       * The experiment was initialized from ERA5 atmospheric data on Jan 20,2020.
       * SST was fixed to daily SST data with linear interpolation. SST and sea ice were given from the data provided at: https://swiftbrowser.dkrz.de/public/dkrz_ee0fb9db-31e9-4c9e-87eb-eaeead11bed1/DYAMOND_PHASE2/ 
       * Initial condition of land was given from a 5-year climatology on January 15th of NICAM integration at approximately 56 km horizontal resolution. 
         Similar approach has been taken by `Kodama et al. (2021) <https://gmd.copernicus.org/articles/14/795/2021/gmd-14-795-2021-discussion.html>`__.
       * The ocean component of NICOCO is initialized from a spin-up simulation from Jan 1. 2020 using oceanic model COCO.

Data description: 
        :ref:`DYAMOND_WINTER-Models-NICAM-3km`


Contact person: 
        `Tamaki Suematsu (Riken) <tamaki.suematsu@riken.jp>`__ and `Tomoki Miyakawa (University of Tokyo) <miyakawa@aori.u-tokyo.ac.jp>`__ 



See also
--------