Changes between Initial Version and Version 1 of ticket/1468/Summary


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Timestamp:
2015-08-24T12:29:12+02:00 (5 years ago)
Author:
mattmartin
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  • ticket/1468/Summary

    v1 v1  
     1[[PageOutline]] 
     2Last edited [[Timestamp]] 
     3 
     4[[BR]] 
     5 
     6'''Author''' : Matthew Martin  
     7 
     8'''ticket''' : #1468 
     9 
     10'''Branch''' : [https://forge.ipsl.jussieu.fr/nemo/browser/branches/2015/dev_r5072_UKMO2_OBS_simplification dev_r5072_UKMO2_OBS_simplification ]  
     11---- 
     12 
     13=== Description === 
     14 
     15The OBS part of NEMO has been simplified to remove duplication of code and to remove some options for input file formats. The main changes implemented are: 
     16 
     17  * removed options in code and namelist for reading formats other than fdbk format. 
     18  * combined reading routines for profile types (T/S and velocity) and combined routines for surface types (SST, SLA, SIC). 
     19  * combined routines for doing the obs operator on each time-step for all profile types, and similarly for all surface types 
     20  * combined writing routines for profile types, and combined writing routines for surface types. 
     21  * changed dia_obs_init to first set up the profile types which should be read in, then loop over profile types and call a generic reading routine and generic preparation routine. Similarly for surface types. 
     22  * changed dia_obs to loop over profile types and call generic profile obs operator routines. Similarly for surface types. 
     23  * made changes to namelist variables so that they comply with the NEMO coding standards 
     24  * removed key_diaobs and replaced it with namelist logical ln_diaobs 
     25  * changed namelist_ref and sette.sh so that the ORCA2_LIM_OBS tests of SETTE will work with the new code.  
     26 
     27The documentation in the NEMO book has been updated to reflect these changes. 
     28 
     29---- 
     30=== Testing === 
     31 
     32Runs of the ORCA2_LIM_OBS SETTE tests have been done with the trunk version, and with this branch, and the obs-minus-model statistics at the bottom of the ocean.output file are exactly the same in both. The output feedback files have also been plotted and look the same. 
     33 
     34Changes to the SETTE scripts have been made to add velocity and sea-ice concentration to the list of observations which are included in the ORCA2_LIM_OBS tests. New files will need to be added to the central 'FORCING' data-set. 
     35 
     36 
     37||NVTK Tested||!'''YES!'''|| 
     38||Other model configurations||!'''NO!'''|| 
     39||Processor configurations tested||[ ORCA2_LIM_OBS with REPRO_4_4 and REPRO_2_8 ]|| 
     40||If adding new functionality please confirm that the [[BR]]New code doesn't change results when it is switched off [[BR]]and !''works!'' when switched on||!'''YES!'''|| 
     41 
     42 
     43=== Bit Comparability === 
     44||Does this change preserve answers in your tested standard configurations (to the last bit) ?||!'''YES!'''|| 
     45||Does this change bit compare across various processor configurations. (1xM, Nx1 and MxN are recommended)||!'''YES!'''|| 
     46||Is this change expected to preserve answers in all possible model configurations?||!'''YES!'''|| 
     47||Is this change expected to preserve all diagnostics? [[BR]]!,,!''Preserving answers in model runs does not necessarily imply preserved diagnostics. !''||!'''YES!'''|| 
     48 
     49If you answered !'''NO!''' to any of the above, please provide further details: 
     50 
     51 * Which routine(s) are causing the difference? 
     52 * Why the changes are not protected by a logical switch or new section-version 
     53 * What is needed to achieve regression with the previous model release (e.g. a regression branch, hand-edits etc). If this is not possible, explain why not. 
     54 * What do you expect to see occur in the test harness jobs? 
     55 * Which diagnostics have you altered and why have they changed?Please add details here........ 
     56 
     57---- 
     58=== System Changes === 
     59||Does your change alter namelists?||!'''YES!'''|| 
     60||Does your change require a change in compiler options?||!'''NO !'''|| 
     61 
     62The namobs namelist has been changed and should now have the following structure: 
     63{{{ 
     64!----------------------------------------------------------------------- 
     65&namobs       !  observation usage switch 
     66!----------------------------------------------------------------------- 
     67   ln_diaobs  = .false.             ! Logical switch for the observation operator 
     68   ln_t3d     = .false.             ! Logical switch for T profile observations 
     69   ln_s3d     = .false.             ! Logical switch for S profile observations 
     70   ln_sla     = .false.             ! Logical switch for SLA observations 
     71   ln_sst     = .false.             ! Logical switch for SST observations 
     72   ln_sic     = .false.             ! Logical switch for Sea Ice observations 
     73   ln_vel3d   = .false.             ! Logical switch for velocity observations 
     74   ln_altbias = .false.             ! Logical switch for altimeter bias correction 
     75   ln_nea     = .false.             ! Logical switch for rejection of observations near land 
     76   ln_grid_global = .true.          ! Logical switch for global distribution of observations 
     77   ln_grid_search_lookup = .false.  ! Logical switch for obs grid search w/lookup table 
     78   ln_ignmis  = .true.              ! Logical switch for ignoring missing files 
     79   ln_s_at_t  = .false.             ! Logical switch for computing model S at T obs if not there 
     80   ln_sstnight = .false.            ! Logical switch for calculating night-time average for SST obs 
     81! All of the *files* variables below are arrays. Use namelist_cfg to add more files 
     82   cn_profbfiles = 'profiles_01.nc'    ! Profile feedback input observation file names 
     83   cn_slafbfiles = 'sla_01.nc'         ! SLA feedback input observation file names 
     84   cn_sstfbfiles = 'sst_01.nc'         ! SST feedback input observation file names 
     85   cn_sicfbfiles = 'sic_01.nc'         ! SIC feedback input observation file names 
     86   cn_velfbfiles = 'vel_01.nc'         ! Velocity feedback input observation file names 
     87   cn_altbiasfile = 'altbias.nc'       ! Altimeter bias input file name 
     88   cn_gridsearchfile = 'gridsearch.nc' ! Grid search file name 
     89   rn_gridsearchres = 0.5              ! Grid search resolution 
     90   rn_dobsini = 00010101.000000        ! Initial date in window YYYYMMDD.HHMMSS 
     91   rn_dobsend = 00010102.000000        ! Final date in window YYYYMMDD.HHMMSS 
     92   nn_1dint = 0                        ! Type of vertical interpolation method 
     93   nn_2dint = 0                        ! Type of horizontal interpolation method 
     94   nn_msshc = 0                        ! MSSH correction scheme 
     95   rn_mdtcorr = 1.61                   ! MDT  correction 
     96   rn_mdtcutoff = 65.0                 ! MDT cutoff for computed correction 
     97   nn_profdavtypes = -1                ! Profile daily average types - array 
     98/ 
     99}}} 
     100 
     101---- 
     102=== Resources === 
     103Runtime and memory changes are minimal. 
     104 
     105---- 
     106=== IPR issues === 
     107||Has the code been wholly (100%) produced by NEMO developers staff working exclusively on NEMO?||!'''YES !'''|| 
     108 
     109If No: 
     110 
     111 * Identify the collaboration agreement details 
     112 * Ensure the code routine header is in accordance with the agreement, (Copyright/Redistribution etc).Add further details here if required..........