Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
|
noresm:runmodel:advancednoresm2 [2014-03-05 13:07:31] alfg |
noresm:runmodel:advancednoresm2 [2016-11-11 07:30:40] i.h.h.karset@geo.uio.no [Configure nudging] |
||
|---|---|---|---|
| Line 1: | Line 1: | ||
| - | ===== Advanced configuration of NorESM2 ===== | + | ====== Advanced configuration of NorESM2 |
| - | === Creating a compset === | + | **NOTE THAT THE COMPSETS MENTIONED IN THIS EXAMPLE ARE NO LONGER MAINTAINED! THE GENERAL EXPLANATION AND IDEAS ARE STILL VALID! |
| + | ** | ||
| + | ===== Creating a new compset | ||
| The essential file to edit is | The essential file to edit is | ||
| < | < | ||
| - | ~/ | + | ~/ |
| </ | </ | ||
| Line 38: | Line 40: | ||
| - | === Setting up a case with the new compset and building the model === | + | ===== Setting up a case with the new compset and building the model ===== |
| It should now be possible to create a new case directory, which we here name FAMIPOSLOtst | It should now be possible to create a new case directory, which we here name FAMIPOSLOtst | ||
| and configure with 1 degree horizontal atmospheric resolution; | and configure with 1 degree horizontal atmospheric resolution; | ||
| + | < | ||
| ./ | ./ | ||
| + | </ | ||
| and finally set up and compile the model: | and finally set up and compile the model: | ||
| + | < | ||
| cd ../ | cd ../ | ||
| + | </ | ||
| + | |||
| + | < | ||
| ./ | ./ | ||
| + | </ | ||
| + | |||
| + | < | ||
| ./ | ./ | ||
| + | </ | ||
| - | === Why does it work to change config_compsets.xml ? === | + | ===== Why does it work to change config_compsets.xml ? ===== |
| In NorESM there are 3 new config-options for CAM: | In NorESM there are 3 new config-options for CAM: | ||
| * -cam-oslo aerlife (turns on transport of oslo tracers) | * -cam-oslo aerlife (turns on transport of oslo tracers) | ||
| - | * -cam-oslo dirind | + | * -cam-oslo dirind |
| - | * -cam-oslo warmclouds (turns on interaction with warm clouds) | + | * -cam-oslo warmclouds (also turns on interaction with warm clouds) |
| - | They change number of tracers and turn on different preprocessor flags in in a script | + | They change number of tracers and turn on different preprocessor flags in in a perl script |
| < | < | ||
| models/ | models/ | ||
| Line 68: | Line 79: | ||
| </ | </ | ||
| - | The options also need to be defined, see | + | The new oslo-options also need to be defined, see |
| < | < | ||
| models/ | models/ | ||
| </ | </ | ||
| - | To see how the options were added, do: | + | To see how these new options were added, do: |
| < | < | ||
| svn diff -r 202 models/ | svn diff -r 202 models/ | ||
| Line 79: | Line 90: | ||
| + | ===== Configure nudging ===== | ||
| + | ==== Create the met-data ==== | ||
| + | |||
| + | First run the model to produce 6 hourly data. The following namelists are needed: | ||
| + | |||
| + | < | ||
| + | user_nl_cam | ||
| + | &camexp | ||
| + | mfilt = 1, 4, | ||
| + | nhtfrq | ||
| + | avgflag_pertape =' | ||
| + | fincl2 | ||
| + | </ | ||
| + | |||
| + | < | ||
| + | user_nl_clm | ||
| + | &clmexp | ||
| + | hist_mfilt | ||
| + | hist_nhtfrq | ||
| + | hist_avgflag_pertape | ||
| + | hist_fincl2 | ||
| + | </ | ||
| + | |||
| + | ==== Use the met-data in another run ==== | ||
| + | |||
| + | First create a compset which has the configure-option " | ||
| + | |||
| + | Then use this compset to create a case. You need the following user-input (for example in your user_nl_cam) | ||
| + | |||
| + | < | ||
| + | & | ||
| + | met_data_file='/ | ||
| + | met_filenames_list = '/ | ||
| + | </ | ||
| + | |||
| + | This info can be added directly in a use_case which you associate with the compset created (see e.g. 2000_cam5_oslonudge.xml) | ||
| + | |||
| + | where met_data_file is the first met-data file to read, and met_filenames_list is a list of the following met-data. The first lines of the file should look something like this (guess what the rest of the file should look like? 8-o: ) | ||
| + | < | ||
| + | / | ||
| + | / | ||
| + | / | ||
| + | </ | ||
| + | |||
| + | This file can be created at the place where you put the metdata with this command: | ||
| + | < | ||
| + | alfgr@hexagon-4:/ | ||
| + | </ | ||
| + | |||
| + | ==== Namelist options ==== | ||
| + | When looking at aerosol indirect effects, it's recommended to nudge only U, V and PS: | ||
| + | < | ||
| + | & | ||
| + | | ||
| + | </ | ||
| + | |||
| + | Choose relaxation time (hours). Use the same time as dt in met_data_file: | ||
| + | < | ||
| + | & | ||
| + | | ||
| + | </ | ||
| + | |||
| + | |||
| + | ==== Nudge to ERA-interim reanalysis ==== | ||
| + | Link to ERA-interim metdata instead of model produced metdata. Remember to choose the files corresponding to your resolution: | ||
| + | < | ||
| + | & | ||
| + | | ||
| + | | ||
| + | </ | ||
| + | |||
| + | Add also the ERA-topography (important when nudging T): | ||
| + | < | ||
| + | & | ||
| + | | ||
| + | </ | ||