;+ ; ; ======================= ; lwr_correction_ncdf.pro ; ======================= ; ; .. function:: lwr_correction_ncdf(yyyymmddb,yyyymmdde) ; ; DESCRIPTION ; =========== ; ; Correction of lwr on OAFLUX grid ; ; :file:`${PROJECT_OD}/erai_lwr_{yyyymmdd}_{yyyymmdd}_oafluxgrid.nc` ; containing ; ++ ; have been produced by ; :func:`interp_erai_lwr` and :ref:`add_19890101.sh`. ; ; Corrected lwr on OAFLUX grid ; is written in ; :file:`${PROJECT_OD}/TropFlux_lwr_{yyyymmdd}_{yyyymmdd}.nc` ; if this file not already exists. ; ; This output file ; :file:`${PROJECT_OD}/TropFlux_lwr_{yyyymmdd}_{yyyymmdd}.nc` ; will be used by ; :func:`tropflux`. ; ; .. only:: man ; ; Figure is visible on PDF and HTML documents only. ; ; .. only:: html or latex ; ; .. graphviz:: ; ; digraph lwr_correction_ncdf { ; ; file_in [shape=ellipse,fontname=Courier,label="${PROJECT_OD}/erai_lwr_{yyyymmdd}_{yyyymmdd}_oafluxgrid.nc"]; ; file_out [shape=ellipse,fontname=Courier,label="${PROJECT_OD}/TropFlux_lwr_{yyyymmdd}_{yyyymmdd}.nc"]; ; ; lwr_correction_ncdf [shape=box, ; fontname=Courier, ; color=blue, ; URL="http://forge.ipsl.jussieu.fr/tropflux/browser/trunk/src/lwr_correction_ncdf.pro", ; label="${PROJECT}/src/lwr_correction_ncdf.pro"]; ; ; {file_in} -> {lwr_correction_ncdf} -> {file_out} ; ; } ; ; SEE ALSO ; ======== ; ; :ref:`mooring_corrections` ; ; Used by :ref:`tropflux.sh` ; ; :ref:`project_profile.sh` ; ; :func:`interp_erai_lwr` and :ref:`add_19890101.sh` ; ; :func:`initncdf ` ; :func:`read_ncdf ` ; :func:`grossemoyenne ` ; :func:`julday ` ; :func:`caldat ` ; :func:`ncdf_quickwrite ` ; ; EXAMPLES ; ======== ; ; .. code-block:: idl ; ; yyyymmddb = 20000101L ; yyyymmdde = 20001231L ; result = lwr_correction_ncdf(yyyymmddb, yyyymmdde) ; print, result ; ; TODO ; ==== ; ; coding rules ; ; lwr long name 'Air Temperature at 2m" : ??? ; ; remove hard coded time ; ; add_19890101.sh sould not be the previous step in a near future ; ; KNOWN ISSUES ; ============ ; ; test of existence of fullfilename_in not very efficient because ; MUST_EXIST keyword of :func:`isafile ` not yet implemented ; ; EVOLUTIONS ; ========== ; ; $Id: lwr_correction_ncdf.pro 88 2011-08-19 15:40:14Z pinsard $ ; ; $URL$ ; ; - fplod 20120322 ; ; * taking project_overwrite into account ; * try to add compile_opt seems to be incompatible with ncdf_quickwrite ; * pro -> function ; * hard coded da1 and da2 replaced by yyyymmddb and yyyymmdde parameters ; * get rid of timegen ; ; - fplod 20110819T105050Z aedon.locean-ipsl.upmc.fr (Darwin) ; ; * replace previous step interp_erai_lwr_1989_2009.pro ; by :ref:`add_19890101.sh` ; * change 19890102 to 19890101 ; ; - fplod 20110808T120234Z cratos (Linux) ; ; * usage of ${PROJECT_OD} ; * complete description ; * replace erai_lwr_19890102_20091231_oafluxgrid.nc by erai_lwr_19890101_20091231 ; * remove v1 in output filename ; ; - fplod 20101215T113707Z aedon.locean-ipsl.upmc.fr (Darwin) ; ; * add graph in header ; ; - fplod 20101214T093615Z aedon.locean-ipsl.upmc.fr (Darwin) ; ; * minimal header ; ; - pbk 2008 ; ; * creation ; ;- function lwr_correction_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 = lwr_correction_ncdf(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 data filename filename='erai_lwr_' + string(yyyymmddb,format='(I8.8)') + '_' + string(yyyymmdde,format='(I8.8)') + '_oafluxgrid.nc' ; ; check if this file exists msg='iii : looking for ' + filename ras = report(msg) fullfilename = isafile(iodirout + filename, NEW=0, /MUST_EXIST) IF fullfilename[0] EQ '' THEN BEGIN msg = 'eee : the file ' + fullfilename + ' was not found.' ras = report(msg) return, result ENDIF ; ; build output filename filename_out = 'TropFlux_lwr_' + 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 lwr=read_ncdf('lwr',yyyymmddb-.5d,yyyymmdde,file=fullfilename,/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 lwr_correction_ncdf first date ', cda0 print, 'lwr in lwr_correction_ncdf last date ' , cda1 ; help, lwr ; lwr_mean=grossemoyenne(lwr,'t',/nan) help,lwr_mean ; jpt=n_elements(time) caldat, time,mon,day,yea lwr_m=lwr*0. ; for jt=0,jpt-1 do begin jtt=(time[jt]-julday(1,1,yea[jt])) < 364 t=reform(lwr_mean[*,*]) lwr_m[*,*,jt]=t endfor help, lwr_m ; lwr_ano=lwr-lwr_m ; ; correction for mean based on scatter lwr_m=lwr_m+4.61667 ; help, lwr_ano ; ; applying the correction for variability based on the scatter lwr_ano=lwr_ano*(1/0.760667) ; ; applying the correction for variability based on the scatter ; lwr_new=lwr_m+lwr_ano help, lwr_new ; ;writing field 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:'Basic data obtained from ERAI. Mean correction for bias and correction for variability are applied',timerange:cda0+' - '+cda1} lwr_attr={units:'degK',missing_value:1.e20,long_name:'Air Temperature at 2m',short_name:'lwr',axis:'TYX'} ; ncfields = 'lwr[longitude,latitude,*time]=lwr_new:lwr_attr; ' $ + 'longitude[]=lon:lon_attr; ' $ + 'latitude[]=lat:lat_attr; ' $ + 'time[]=timein:time_attr ' $ + ' @ globattr' ; @ncdf_quickwrite ; result = 0 return, result ; end