[[PageOutline]] Last edited [[Timestamp]]

'''Author''' : Paolo Oddo

'''ticket''' : [ticket:850]

'''Branch''' : [http://forge.ipsl.jussieu.fr/nemo/browser/branches/2011/dev_r2784_INGV2_bulk?rev=2786 dev_r2784_INGV2_bulk]

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=== Description ===
The new set of bulk formulae are:
 -- Reed 1975 for the Solar Radiation

 -- Bignami 1995 for the Net long wave radiation

 -- Kondo 1975 For the Sensible Heat Flux

 -- Gill 1982 for the Latent Heat Flux

 -- Hellerman and Rosenstein 1983 for the Drag Coeff. (Cd)

Requested input data are:

 -- 10m wind velocity (i and j componets) (m/s)

 -- Dew point Temperature (k)

 -- Cloud Cover (%)

 -- 10m Air Temperature (K)

 -- Mean Sea Level Pressure (hPa)

 -- Total Precipitation (kg/m2/s)

The routine provides:

 -- Meridional and Zonal component of the wind stress

 -- Wind Stress module at T-point

 -- 10m wind module at t-point

 -- qns and qsr non-solar and solar heat flux (and all the component of the non solar: Sensible latent and long)

 -- emp and emps (evaporation - precipitation)



 

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=== Testing ===
Testing could consider (where appropriate) other configurations in addition to NVTK].

||NVTK Tested||!'''YES/NO!'''||
||Other model configurations||!'''YES/NO!'''||
||Processor configurations tested||[ Enter processor configs tested here ]||
||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/NO/NA!'''||

(Answering UNSURE is likely to generate further questions from reviewers.)

'Please add further summary details here'

 * Processor configurations tested
 * etc----

=== Bit Comparability ===
||Does this change preserve answers in your tested standard configurations (to the last bit) ?||!'''YES/NO !'''||
||Does this change bit compare across various processor configurations. (1xM, Nx1 and MxN are recommended)||!'''YES/NO!'''||
||Is this change expected to preserve answers in all possible model configurations?||!'''YES/NO!'''||
||Is this change expected to preserve all diagnostics? [[BR]]!,,!''Preserving answers in model runs does not necessarily imply preserved diagnostics. !''||!'''YES/NO!'''||

If you answered !'''NO!''' to any of the above, please provide further details:

 * Which routine(s) are causing the difference?
 * Why the changes are not protected by a logical switch or new section-version
 * 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.
 * What do you expect to see occur in the test harness jobs?
 * Which diagnostics have you altered and why have they changed?Please add details here........

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=== System Changes ===
||Does your change alter namelists?||!'''YES !'''||
||Does your change require a change in compiler options?||!'''NO !'''||

If any of these apply, please document the changes required here.......
in the namsbc the following bolean shoul;d be included : ln_blk_ecmwf
a dedicated namelist containing the files specification must be included:
&namsbc_ecmwf   !   namsbc_ecmwf  MFS bulk formulea
!-----------------------------------------------------------------------
!              !  file name  ! frequency (hours) ! variable  ! time interp. !  clim  ! 'yearly'/ ! weights  ! rotation !
!              !             !  (if <0  months)  !   name    !   (logical)  !  (T/F) ! 'monthly' ! filename ! pairing  !
   sn_wndi     =   'ecmwf'   ,        X          , 'u10'     ,    .true.    , .false. , 'daily'  ,'XX_bicubic.nc' , ''
   sn_wndj     =   'ecmwf'   ,        X          , 'v10'     ,    .true.    , .false. , 'daily'  ,'XX_bicubic.nc' , ''
   sn_clc      =   'ecmwf'   ,        X          , 'clc'     ,    .true.    , .false. , 'daily'  ,'XX_bilinear.nc', ''
   sn_msl      =   'ecmwf'   ,        X          , 'msl'     ,    .true.    , .false. , 'daily'  ,'XX_bicubic.nc' , ''
   sn_tair     =   'ecmwf'   ,        X          , 't2'      ,    .true.    , .false. , 'daily'  ,'XX_bicubic.nc' , ''
   sn_rhm      =   'ecmwf'   ,        X          , 'rh'      ,    .true.    , .false. , 'daily'  ,'XX_bilinear.nc', ''
   sn_prec     ='precip_cmap',        X          , 'precip'  ,    .true.    , .true.  , 'yearly' ,''                         , ''

   cn_dir      = '/home/user/NEMO/DATA/ECMWF_nc/'      !  root directory for the location of the bulk files
   nn_qbw      = 4         !  0/1/2/3/4 type of bulk formula used to compute long wave radiation


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=== Resources ===
!''Please !''summarize!'' any changes in runtime or memory use caused by this change......!''

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=== IPR issues ===
||Has the code been wholly (100%) produced by NEMO developers staff working exclusively on NEMO?||!'''YES/ NO !'''||

If No:

 * Identify the collaboration agreement details
 * Ensure the code routine header is in accordance with the agreement, (Copyright/Redistribution etc).Add further details here if required..........