Changes between Version 1 and Version 2 of UM/Configurations/UKESM/RelNotes1.0


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Timestamp:
08/02/19 15:48:13 (8 months ago)
Author:
jwalton
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  • UM/Configurations/UKESM/RelNotes1.0

    v1 v2  
    44These are the notes for the first release of the UK Earth System Model (UKESM1).  Some background information on the release and support of UKESM1 is available [https://ukesm.ac.uk/portfolio-item/release-and-support-of-ukesm1/ here] and [https://ukesm.ac.uk/portfolio-item/the-release-of-ukesm1-update/ here].  
    55 
     6== Model and suite specifications 
     7 
     8The current version of UKESM1 has an atmospheric resolution of N96 (~140 km) and a one degree resolution in the ocean.  The vertical resolution is 85 levels in the atmosphere and 75 levels in the ocean.  
     9 
     10The model is distributed and run as a [wiki:RoseCylc Rose] suite.  A number of different configurations of the model are available, described in the following subsections.   
     11 
     12''Note that links to suites require access to the Met Office Science Repository Service - see [wiki:UKESM/UKESM1intro#Backgroundandprerequisites here] for more details''. 
     13 
     14=== historical, pre-industrial control 
     15 
     16There are two fully coupled UKESM1 configurations which each make use of all model components: one with science settings for a historical experiment, and one with settings for a pre-industrial control experiment.    
     17  
     18||=''UM version''=||=''historical''=||=''pre-industrial control''=|| 
     19||=vn11.2=||=[https://code.metoffice.gov.uk/trac/roses-u/browser/b/c/6/1/3/trunk u-bc613]=||=[https://code.metoffice.gov.uk/trac/roses-u/browser/b/c/9/6/4/trunk u-bc964]=|| 
     20 
     21=== abrupt4xCO2, 1%CO2 
     22 
     23Configurations for abrupt4xCO2 and 1%CO2 experiments can be created using the pre-industrial control experiment as a starting point. 
     24 
     25To create a suite for the abrupt4xCO2 experiment, first make a copy of the  [https://code.metoffice.gov.uk/trac/roses-u/browser/b/c/9/6/4/trunk pre-industrial control suite], then in `um -> namelist -> UM Science Settings -> Section 01-02 - Radation -> GAS MMRs`, set `co2_mmr=1.72728e-03`. 
     26 
     27To create a suite for the 1xCO2 experiment, first make a copy of the  [https://code.metoffice.gov.uk/trac/roses-u/browser/b/c/9/6/4/trunk pre-industrial control suite], then in `um -> namelist -> UM Science Settings -> Section 01-02 - Radation -> GAS MMRs -> Varying gas MMRs`, set `l_clmchfcg=.true.` to enable time-varying GHGs.  Finally, in the sub-panel `Varying CO2 MMRs`, set 
     28 
     29{{{ 
     30clim_fcg_levls_co2=4.3182e-04 
     31clim_fcg_nyears_co2=1 
     32clim_fcg_rates_co2=1.0 
     33clim_fcg_years_co2=1849 
     34}}} 
     35 
     36 
     37See [#Sciencenotes below] for more on the science settings of the model. 
     38 
    639== Options for running the model 
    740 
    8 By default, the suite is set up to run the model on the Met Office HPC.  The suite offers several options for specifying how the model is to be run, including:   
     41By default, each UKESM1 suite is set up to run the model on the Met Office HPC.  The suite offers several options for specifying how the model is to be run, including:   
    942 
    1043 * login node to be used for submission to Met Office HPC: `suite conf -> Machine Options -> MetO Cray login node` 
     
    4174 
    4275By default, the suite is ''not'' set up to run in full CMIP6 production mode, so this information is not required.  To change this, set `suite info -> project` to `u-cmip6` (which will expose the interface in `suite info` for collecting this information) and set `suite conf -> Project Accounting -> CMIP6 Experiment` to `true` (which will turn on the validation of the information).  More information on setting up a CMIP6 experiment is available [https://code.metoffice.gov.uk/trac/ukcmip6/wiki/ExperimentGuidance here]. 
    43  
    44 == Model and suite specifications 
    45  
    46 The current version of UKESM1 has an atmospheric resolution of N96 (~140 km) and a one degree resolution in the ocean.  The vertical resolution is 85 levels in the atmosphere and 75 levels in the ocean.   
    47  
    48 === historical, pre-industrial control 
    49  
    50 This table lists the UKESM1 suites that are currently available.  There are two fully coupled configurations which each make use of all model components: one with science settings for a historical experiment, and one with settings for a pre-industrial control experiment.    
    51   
    52 ||=''UM version''=||=''historical''=||=''pre-industrial control''=|| 
    53 ||=vn11.2=||=[https://code.metoffice.gov.uk/trac/roses-u/browser/b/c/6/1/3/trunk u-bc613]=||=[https://code.metoffice.gov.uk/trac/roses-u/browser/b/c/9/6/4/trunk u-bc964]=|| 
    54  
    55 === abrupt4xCO2, 1%CO2 
    56  
    57 Configurations for abrupt4xCO2 and 1%CO2 experiments can be created using the pre-industrial control experiment as a starting point. 
    58  
    59 To create a suite for the abrupt4xCO2 experiment, first make a copy of the  [https://code.metoffice.gov.uk/trac/roses-u/browser/b/c/9/6/4/trunk pre-industrial control suite], then in `um -> namelist -> UM Science Settings -> Section 01-02 - Radation -> GAS MMRs`, set `co2_mmr=1.72728e-03`. 
    60  
    61 To create a suite for the 1xCO2 experiment, first make a copy of the  [https://code.metoffice.gov.uk/trac/roses-u/browser/b/c/9/6/4/trunk pre-industrial control suite], then in `um -> namelist -> UM Science Settings -> Section 01-02 - Radation -> GAS MMRs -> Varying gas MMRs`, set `l_clmchfcg=.true.` to enable time-varying GHGs.  Finally, in the sub-panel `Varying CO2 MMRs`, set 
    62  
    63 {{{ 
    64 clim_fcg_levls_co2=4.3182e-04 
    65 clim_fcg_nyears_co2=1 
    66 clim_fcg_rates_co2=1.0 
    67 clim_fcg_years_co2=1849 
    68 }}} 
    69  
    70  
    71 See [#Sciencenotes below] for more on the science settings of the model. 
    7276 
    7377== Archiving of duplexed data 
     
    122126== Support 
    123127 
    124 * Met Office users running this suite on Met Office machines (Met Office HPC, MONSooN) should contact Jeremy Walton (jeremy.walton@metoffice.gov.uk). 
     128* NERC users requiring assistance running this suite on NERC machines (ARCHER, NEXCS, MONSooN) should raise a ticket on the NCAS-CMS helpdesk at http://cms.ncas.ac.uk/wiki/CmsHelpdesk.   
    125129 
    126 * NERC users requiring assistance running this suite on NERC machines (ARCHER, NEXCS, MONSooN) should raise a ticket on the NCAS-CMS helpdesk at http://cms.ncas.ac.uk/wiki/CmsHelpdesk.   
     130* Met Office users running this suite on Met Office machines (Met Office HPC, MONSooN) should contact Jeremy Walton ([mailto:jeremy.walton@metoffice.gov.uk]). 
    127131 
    128132* Users running this suite on other machines should contact local support services.  
    129133 
    130 ''Last modified on [[LastModified]] by [[LastModifiedBy]]''