;+
;
; =====================
; tropflux_nrt_ncdf.pro
; =====================
;
; .. function:: tropflux_nrt_ncdf(yyyymmddb, yyyymmdde)
;
; :file:`${PROJECT_OD}/TropFlux_swr_{yyyymmdd}_{yyyymmdd}_BLND.nc`
; containing
; ws corrected on OAFLUX grid
; has been produced by
; :func:`tropflux_swr_blnd`.
;
; :file:`${PROJECT_OD}/TropFlux_lwr_{yyyymmdd}_{yyyymmdd}.nc`
; containing
; lwr corrected on OAFLUX grid
; has been produced by
; :func:`lwr_correction_ncdf`.
;
; :file:`${PROJECT_OD}/TropFlux_{yyyymmdd}_{yyyymmdd}_coare3.nc`
; containing
; ++
; has been produced by
; :func:`tropflux`.
;
; ++ are written
; in :file:`${PROJECT_OD}/TropFlux_{yyyymmdd}_{yyyymmdd}.nc`
; if this file not already exists.
;
;     .. graphviz::
;
;        digraph tropflux_nrt_ncdf {
;
;           file_swr [shape=ellipse,fontname=Courier,label="${PROJECT_OD}/TropFlux_swr_{yyyymmdd}_{yyyymmdd}_BLND.nc"];
;           file_lwr [shape=ellipse,fontname=Courier,label="${PROJECT_OD}/TropFlux_lwr_{yyyymmdd}_{yyyymmdd}.nc"];
;           file_coare [shape=ellipse,fontname=Courier,label="${PROJECT_OD}/TropFlux_{yyyymmdd}_{yyyymmdd}_coarev3.nc"];
;           file_out [shape=ellipse,fontname=Courier,label="${PROJECT_OD}/TropFlux_{yyyymmdd}_{yyyymmdd}.nc"];
;
;           tropflux_nrt_ncdf [shape=box,
;           fontname=Courier,
;           color=blue,
;           URL="http://forge.ipsl.jussieu.fr/tropflux/browser/trunk/src/tropflux_nrt_ncdf.pro",
;           label="${PROJECT}/src/tropflux_nrt_ncdf.pro" ];
;
;           {file_swr file_lwr file_coare} -> {tropflux_nrt_ncdf} -> {file_out}
;
;        }
;
; SEE ALSO
; ========
;
; Used by :ref:`tropflux.sh`
;
; :ref:`project_profile.sh`
;
; :func:`initncdf <saxo:initncdf>`
; :func:`read_ncdf <saxo:read_ncdf>`
; :func:`julday <saxo:julday>`
; :func:`jul2date <saxo:jul2date>`
; :func:`ncdf_quickwrite <saxo:ncdf_quickwrite>`
;
; EXAMPLES
; ========
;
; .. code-block:: idl
;
;    yyyymmddb = 20000101L
;    yyyymmdde = 20001231L
;    result = tropflux_nrt_ncdf(yyyymmddb, yyyymmdde)
;    print, result
;
; TODO
; ====
;
; handle yyyymmdde > 20071231 see attributes also
;
; coding rules
;
; create 4 files instead of one now
;
; EVOLUTIONS
; ==========
;
; $Id: tropflux_nrt_ncdf.pro 88 2011-08-19 15:40:14Z pinsard $
;
; $URL$
;
; - fplod 20120326
;
;   * pro -> func
;   * rename with lower case TropFlux_NRT_ncdf.pro become tropflux_nrt_ncdf.pro
;   * taking project_overwrite into account
;   * try to add compile_opt seems to be incompatible with ncdf_quickwrite
;   * hard coded st and en replaced by yyyymmddb and yyyymmdde parameters
;   * get rid of timegen
;
; - fplod 20110809T133815Z cratos (Linux)
;
;   * remove v50 from pro name and in the graph
;   * add coarev3 to the file coming from TropFlux_19890101_20091231.pro
;   * use $PROJECT_OD
;
; - fplod 20101214T112526Z aedon.locean-ipsl.upmc.fr (Darwin)
;
;   * add graph
;
; - fplod 20101214T093615Z aedon.locean-ipsl.upmc.fr (Darwin)
;
;   * minimal header
;
; - pbk 2008
;
;   * creation
;
;-
function tropflux_nrt_ncdf $
, yyyymmddb $
, yyyymmdde
;
compile_opt idl2, strictarrsubs, logical_predicate
;
@cm_4cal
@cm_4data
@cm_4mesh
@cm_4data
@cm_project
;
; Return to caller if errors
ON_ERROR, 2
;
result = -1
;
usage = 'result = tropflux_swr_dt(yyyymmddb, yyyymmdde)'
nparam = N_PARAMS()
IF (nparam NE 2) THEN BEGIN
    ras = report(['Incorrect number of arguments.' $
              + '!C' $
              + 'Usage : ' + usage])
    return, result
ENDIF
;
; test if ${PROJECT_OD} defined
CASE project_od_env OF
    '' : BEGIN
        msg = 'eee : ${PROJECT_OD} is not defined'
        ras = report(msg)
        return, result
    END
    ELSE : BEGIN
        msg = 'iii : ${PROJECT_OD} is ' + project_od_env
        ras = report(msg)
    END
ENDCASE
;
; check if output data will be possible
iodirout = isadirectory(project_od_env)
;
; existence and protection for reading
IF (FILE_TEST(iodirout, /DIRECTORY, /EXECUTABLE, /READ) EQ 0) THEN BEGIN
    msg = 'eee : the directory' + iodirout  + ' is not accessible.'
    ras = report(msg)
    return, result
ENDIF
;
; existence and protection for writing
IF (FILE_TEST(iodirout, /DIRECTORY, /WRITE) EQ 0) THEN BEGIN
    msg = 'eee : the directory' + iodirout  + ' was not found.'
    ras = report(msg)
    return, result
ENDIF
;
; build SWR blnd data filename
filename_swr_blnd="TropFlux_swr_' +  string(yyyymmddb,format='(I8.8)') + '_' + string(yyyymmdde,format='(I8.8)') + '_BLND.nc"
;
; check if this file exists
msg='iii : looking for ' + filename_swr_blnd
ras = report(msg)
fullfilename_swr_blnd = isafile(iodirout + filename_swr_blnd, NEW=0, /MUST_EXIST)
IF fullfilename_swr_blnd[0] EQ '' THEN BEGIN
    msg = 'eee : the file ' + fullfilename_swr_blnd + ' was not found.'
    ras = report(msg)
    return, result
ENDIF
;
; build LWR data filename
filename_lwr="TropFlux_lwr_' +  string(yyyymmddb,format='(I8.8)') + '_' + string(yyyymmdde,format='(I8.8)') + '.nc"
;
; check if this file exists
msg='iii : looking for ' + filename_lwr
ras = report(msg)
fullfilename_lwr = isafile(iodirout + filename_lwr, NEW=0, /MUST_EXIST)
IF fullfilename_lwr[0] EQ '' THEN BEGIN
    msg = 'eee : the file ' + fullfilename_lwr + ' was not found.'
    ras = report(msg)
    return, result
ENDIF
;
;  build COARE data filename
filename_coare="TropFlux_' +  string(yyyymmddb,format='(I8.8)') + '_' + string(yyyymmdde,format='(I8.8)') + '_coarev3.nc"
;
; check if this file exists
msg='iii : looking for ' + filename_lwr
ras = report(msg)
fullfilename_coare = isafile(iodirout + filename_coare, NEW=0, /MUST_EXIST)
IF fullfilename_coare[0] EQ '' THEN BEGIN
    msg = 'eee : the file ' + fullfilename_coare + ' was not found.'
    ras = report(msg)
    return, result
ENDIF
;
filename_out='TropFlux_' +  string(yyyymmddb,format='(I8.8)') + '_' + string(yyyymmdde,format='(I8.8)') + '.nc'
fullfilename_out = iodirout + filename_out
; in order to avoid unexpected overwritten
IF ((FILE_TEST(fullfilename_out) EQ 1)  AND (project_overwrite EQ 0)) THEN BEGIN
    msg = 'eee : the file ' + fullfilename_out  + ' already exists.'
    ras = report(msg)
    return, result
ENDIF
;
initncdf, fullfilename_swr_blnd
;
swr=read_ncdf("swr", yyyymmddb - .5d, yyyymmdde, file=fullfilename_swr_blnd,/nostr)
timein=24.d*(time-julday(1,1,1957,0,0,0))
jpt=n_elements(timein)
da=jul2date(time[0])
cda0=string(da,format='(i8.8)')
da=jul2date(time[jpt-1])
cda1=string(da,format='(i8.8)')
print, 'swr in tropflux_nrt_ncdf first date ', cda0
print, 'swr in tropflux_nrt_ncdf last date ' , cda1
;
initncdf, fullfilename_lwr
lwr=read_ncdf("lwr", yyyymmddb - .5d, yyyymmdde, file=fullfilename_lwr,/nostr)
timein=24.d*(time-julday(1,1,1957,0,0,0))
jpt=n_elements(timein)
da=jul2date(time[0])
cda0=string(da,format='(i8.8)')
da=jul2date(time[jpt-1])
cda1=string(da,format='(i8.8)')
print, 'lwr in tropflux_nrt_ncdf first date ', cda0
print, 'lwr in tropflux_nrt_ncdf last date ' , cda1
;
initncdf, fullfilename_coare
lhf=read_ncdf("lhf", yyyymmddb - .5d, yyyymmdde, file=fullfilename_coare,/nostr)
timein=24.d*(time-julday(1,1,1957,0,0,0))
jpt=n_elements(timein)
da=jul2date(time[0])
cda0=string(da,format='(i8.8)')
da=jul2date(time[jpt-1])
cda1=string(da,format='(i8.8)')
print, 'lhf in tropflux_nrt_ncdf first date ', cda0
print, 'lhf in tropflux_nrt_ncdf last date ' , cda1
;
shf=read_ncdf("shf", yyyymmddb - .5d, yyyymmdde, file=fullfilename_coare,/nostr)
timein=24.d*(time-julday(1,1,1957,0,0,0))
jpt=n_elements(timein)
da=jul2date(time[0])
cda0=string(da,format='(i8.8)')
da=jul2date(time[jpt-1])
cda1=string(da,format='(i8.8)')
print, 'shf in tropflux_nrt_ncdf first date ', cda0
print, 'shf in tropflux_nrt_ncdf last date ' , cda1
;
help, swr, lwr, lhf, shf
;
lat=reform(gphit[0,0:jpj-1])
lon=reform(glamt[0:jpi-1,0])
;
ncfile='!' + fullfilename_out
lon_attr={units:'degrees_east',long_name:'Longitude'}
lat_attr={units:'degrees_north',long_name:'Latitude'}
time_attr={units:'days since 1950-01-01 00:00:00',long_name:'Time axis',time_origin:'1950-JAN-01 00:00:00'}
globattr={Source:'TropFlux - Air-Sea Fluxes for the Global Tropics', Resolution:'1 x 1 degree and daily', IDL_program_name:'TropFlux_ncdf.pro',Timerange:cda0+' - '+cda1, More_Info:'ISCCP based SWR until 2007 and OLR based SWR after that with a 90 day linear transition between the two'}
sw_attr={units:'w/m^2',missing_value:1.e20,long_name:'Net Shortwave Radiation',short_name:'swr',axis:'TYX'}
lw_attr={units:'w/m^2',missing_value:1.e20,long_name:'Net Longwave Radiation',short_name:'lwr',axis:'TYX'}
sh_attr={units:'w/m^2',missing_value:1.e20,long_name:'Sensible Heat Flux',short_name:'shf',axis:'TYX'}
lh_attr={units:'w/m^2',missing_value:1.e20,long_name:'Latent Heat Flux',short_name:'lhf',axis:'TYX'}
;
ncfields = 'swr[longitude,latitude,*time]=swr:sw_attr; ' $
+'lwr[longitude,latitude,*time]=lwr:lw_attr; ' $
+'lhf[longitude,latitude,*time]=lhf:lh_attr; ' $
+'shf[longitude,latitude,*time]=shf:sh_attr; ' $
+ 'longitude[]=lon:lon_attr; ' $
+ 'latitude[]=lat:lat_attr; ' $
+ 'time[]=timein:time_attr ' $
+ ' @ globattr'
;
@ncdf_quickwrite
;
result = 0
return, result
;
end