! jnl file that uses Argo data to make different salinity maps ! requires input arguments for time range, depth range and lat/lon range ! to run the program in ferret, you will need to type the following line with the various values filled in: ! go fer_psal_map_dens time_start time_end dens_min dens_max lat_min lat_max lon_min lon_max iland station depth_axis con_lev ! If you choose not to give values for the various variables, default ones will be substituted for you. ! If you only want to choose some values, you can, but you cannot skip any values. This means you can ! fill in the first 2 and no others, or if you want to specify the lat/lon ranges, you must fill in values ! for the first 4 variables as well as the lat/lon ranges. ! density values are entered in the range of 21 - 28 kg/m^3 ! time values are entered corresponding to monthly values starting with Jan, 2004 ! iland 0=hig res, 1=low res go fland ! station 1=overlay stations, all other values disable ! con_lev sets the contour and fill levels of the plot. This is done in the following format: (lo,hi,delta). ! More than one can be chosen: (lo,mid,delta1),(mid,hi,delta2). See the Ferret Users Manual for more information. ! if no values are entered, the default region is 50S to 25N and 130E to 250E with an average over the ! entire depth and time region cancel/all data cancel/all var cancel/all sym cancel/all region set window/clear go set_pixel_size 1024 768 set mem/size=100 ! assigning variables to arguments passed in the go command as well as default values let lat_min=`$5%-50%` let lat_max=`$6%20%` let lon_min=`$7%120%` let lon_max=`$8%300%` let dens_min=`$3%23%` let dens_max=`$4%23%` let time_start=`$1%16%` let time_end=`$2%16%` let iland=`$9%1%` let station=`$10%1%` let depth_axis=`$11%0%` set mode interpolate PPL DFLTFNT DR ppl conpre @P1@DR ppl axlsze 0.15,.15 ppl axset 1,1,1,1 ppl pen 0,7 ppl pen 1,7 ppl labset .15,.15,.15 use RG_ArgoClim_Full.nc let dyn_t=ARGO_TEMPERATURE_MEAN[d=1]+ARGO_TEMPERATURE_ANOMALY[d=1] let dyn_s=ARGO_SALINITY_MEAN[d=1]+ARGO_SALINITY_ANOMALY[d=1] let dyn_p=z[d=1,g=`dyn_t, return=grid`] ! setting map scales properly let beq=if (`lon_min`) eq (`lon_max`) then 1 else 0 if `beq` then let lon_max=`lon_max`+360 endif let blm=if (`lon_min`) gt (`lon_max`) then 1 else 0 if `blm` then let lon_max=`lon_max`+360 endif define symbol xdeg `lon_max-lon_min` define symbol ydeg `lat_max-lat_min` define symbol alasp `($ydeg)/($xdeg)` set win/asp=($alasp):axis define region/y=`lat_min`:`lat_max`/x=`lon_min`:`lon_max` mreg set region mreg define viewport/xlim=.0,.95/ylim=0,1 top ! you want density surfaces instead of db as the depth axis unit ! first need to calculate density sigma and density axis axden let dens=rho_un(dyn_s,dyn_t,dyn_p) let potemp=THETA_FO(dyn_s,dyn_t,dyn_p,0) let podens=rho_un(dyn_s,potemp,0.)-1000 define axis/z=21:28:.05 axden ! then regrid onto density grid spacing let psal=zaxreplace(dyn_s,podens,z[gz=axden]) ! begin mapping process ! only map an average if the two depths/times are different. otherwise, map at that depth/time only ! only plot averaged points if there is data down at the deepest layer ! depth is the same let a=if `dens_max` eq `dens_min` then 1 else 0 if `a` then let psal_map=psal[z=`dens_min`,l=`time_start`:`time_end`@ave] endif ! depth is different let b=if `dens_max` ne `dens_min` then 1 else 0 if `b` then let psal_map=psal[z=`dens_min`:`dens_max`@ave,l=`time_start`:`time_end`@ave] endif let con_lev= $12&"()"|*>"*"& fill/nolab/set/palette=cofi_sal/lev="`con_lev`" psal_map ppl shakey 1,,.08,,5,,,,,, ppl fill ! adding contours con/set_up/nolab/over/lev="`con_lev`" psal_map ppl conset .11,,,,,,,5.7,1.,1 ! was .11 ppl contour/overlay ! now use etopo6 to add bathymetry ! check zonal range to see if using high or low land resoluion let rcheck=`lon_max`-`lon_min` if `rcheck gt 120` then if `iland eq 0` then use etopo12_grid.nc shade/over/nokey/nolab/pal=black/hlim=`lon_min`:`lon_max`/vlim=`lat_min`:`lat_max`/lev=(0,10000,10000) btdata12[y=`lat_min`:`lat_max`,x=`lon_min`:`lon_max`] shade/over/nokey/nolab/palette=lightgreyscale/over/hlim=`lon_min`:`lon_max`/vlim=`lat_min`:`lat_max`/levels=(-1000,0,1000) btdata12[y=`lat_min`:`lat_max`,x=`lon_min`:`lon_max`] shade/over/nokey/nolab/pal=grey/over/hlim=`lon_min`:`lon_max`/vlim=`lat_min`:`lat_max`/lev=(-200,0,200) btdata12[y=`lat_min`:`lat_max`,x=`lon_min`:`lon_max`] endif if `iland eq 1` then use etopo12_grid.nc fill/over/nokey/nolab/palette=black/hlim=`lon_min`:`lon_max`/vlim=`lat_min`:`lat_max`/levels=(0,10000,10000) btdata12[y=`lat_min`:`lat_max`,x=`lon_min`:`lon_max`] endif endif if `rcheck le 120` then if `iland eq 0` then use etopo6_grid.nc shad/over/nokey/nolab/palette=black/hlim=`lon_min`:`lon_max`/vlim=`lat_min`:`lat_max`/levels=(0,10000,10000) btdata[y=`lat_min`:`lat_max`,x=`lon_min`:`lon_max`] shad/over/nokey/nolab/palette=lightgreyscale/over/hlim=`lon_min`:`lon_max`/vlim=`lat_min`:`lat_max`/levels=(-1000,0,1000) btdata[y=`lat_min`:`lat_max`,x=`lon_min`:`lon_max`] shad/over/nokey/nolab/palette=grey/over/hlim=`lon_min`:`lon_max`/vlim=`lat_min`:`lat_max`/levels=(-200,0,200) btdata[y=`lat_min`:`lat_max`,x=`lon_min`:`lon_max`] else use etopo6_grid.nc shad/over/nokey/nolab/palette=black/hlim=`lon_min`:`lon_max`/vlim=`lat_min`:`lat_max`/levels=(0,10000,10000) btdata[y=`lat_min`:`lat_max`,x=`lon_min`:`lon_max`] endif endif if `station eq 1` then go fer_psal_station_loc_overlay endif say Plot is finished say To adjust parameters, use the command line to pass arguments say For this file, the form to pass arguments is say go fer_psal_map_dens time_start time_end dens_min dens_max lat_min lat_max lon_min lon_max iland station depth_axis con_lev