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tools:ocean_nudging2 [2018/07/17 14:50] vsicardi [3D Nudging] |
tools:ocean_nudging2 [2018/07/25 12:57] vsicardi |
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======PAGE UNDER CONSTRUCTION. PLEASE BE PATIENT================= | ======PAGE UNDER CONSTRUCTION. PLEASE BE PATIENT================= | ||
- | ==== How to run a nudging experiment with EC-Earth 3.2==== | + | ==== How to run a nudging experiment with EC-Earth 3.2.3 ==== |
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Both features are already part of NEMO code, nevertheless with auto-ecearth there are some parameters to activate in the configuration files and some variables to take care of in the namelist. This guide is mostly thought for AUTO-ECEARTH users. | Both features are already part of NEMO code, nevertheless with auto-ecearth there are some parameters to activate in the configuration files and some variables to take care of in the namelist. This guide is mostly thought for AUTO-ECEARTH users. | ||
- | First of all, check that the reference | + | First of all, check that the nudging |
- | in MN4, data for surface restoring are located here: | + | |
- | Any new surface restoring files should be located in the above path ocean/ | + | |
- | For 3d nudging, the location is : / | + | In MN4, data for surface restoring are located here: / |
- | In MN4 for example is: / | + | |
- | If you would like to prepare | + | Any new surface restoring |
- | The 3D nudging files are yearly files containing | + | For 3d nudging, the location in MN4 is / |
- | The managing of the nudging | + | |
+ | If you would like to prepare new reference files, their naming should follow the convention : REFERENCE_fcMEMB_YYYYMM_grid_T.nc.gz = one file containing 3-dimensional monthly mean temperature and salinity. For a given year the previous year and the following year are linked. So be sure you have all the files before you start. | ||
+ | |||
+ | In theory the user should only specify the name of the file to be used, then auto-ecearth | ||
+ | |||
========Surface Restoring======== | ========Surface Restoring======== | ||
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- | **Proj.conf settings: | + | STEPS to activate surface restoring: |
- | In proj.conf you activate | + | |
- | You should specify | + | **1. Proj.conf settings: |
+ | |||
+ | - Ordered List Item Activate | ||
+ | - Define | ||
+ | |||
So far you can use oras4, | So far you can use oras4, | ||
+ | |||
Please note that is responsibility of the user to be sure that the surface restoring data to be used are in the right format and in the right place. In case of doubts speak with Valentina or Yohan. | Please note that is responsibility of the user to be sure that the surface restoring data to be used are in the right format and in the right place. In case of doubts speak with Valentina or Yohan. | ||
- | **Namelist settings** | + | **2.Namelist settings** |
- | You can use nemo-only or coupled version | + | Note that, depending on the branch the user wants to use this part is already set-up. See section about available branches |
- | Depending on this the namelist | + | |
+ | You can use nemo-only or coupled version for your nudged experiments. Depending on this option, | ||
- | Here is an example to activate SST restoring : | ||
- | + | Here is an example to activate SST restoring in **namelist_nemo-ORCA1L75-standalone.cfg.sh**. | |
- | | + | |
+ | in section nambsrc you will find: | ||
+ | |||
+ | | ||
+ | |||
+ | This is switched on from configuration file. So do not worry about it. If SURF_RESTO = TRUE in proj.conf, | ||
+ | |||
+ | |||
+ | Here there are some parameters that the user should check: | ||
+ | |||
+ | | ||
& | & | ||
| | ||
- | |||
! filename | ! filename | ||
| | ||
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/ | / | ||
- | !----------------------------------------------------------------------- | + | !----------------------------------------------------------------------- |
+ | |||
Reference data | Reference data | ||
- | Nudging files, as defined in fldread.F90. They can be one file per year (even if there are one record per month in it), or one separate file for each and every month. In the following example it's one file with 12 months, for each variable. | ||
Note that the name of the file contains " | Note that the name of the file contains " | ||
- | sst_restore_data_yXXXX.nc | ||
- | sss_restore_data_yXXXX.nc | ||
- | SST parameters : | + | SST parameters |
nn_sstr | nn_sstr | ||
- | sn_sst | + | sn_sst file name = name of the file, in the format: sst_restore_data. if you use s4 or one of your exp, do not modify it. auto-ecearth will do the job. The name of the nudging file, is defined in fldread.F90, |
- | + | ||
- | file name : Name of the nudging file, as defined in fldread.F90, | + | |
frequency : the frequency of the data, usually 1 month, i.e. -1 | frequency : the frequency of the data, usually 1 month, i.e. -1 |