! jnl file that uses Argo data to make potential density plots ! requires input arguments for the time range, dynamic height levels 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_podens time_start time_end depth_top_level depth_bottom_level 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 variables as well as the lat/lon ranges. ! depth values are entered in the range of 0 to 2000dbar ! time values are entered in a range 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. cancel/all data cancel/all var cancel/all sym set mem/size=200 set window/clear go set_pixel_size 1024 768 ! assigning variables to arguments passed in the go command as well as default values let lat_min=`$5%-50%` let lat_max=`$6%25%` let lon_min=`$7%130%` let lon_max=`$8%250%` let depth_top=`$3%1000%` let depth_bottom=`$4%1000%` let time_start=`$1%36%` let time_end=`$2%36%` let iland=`$9%0%` let station=`$10%0%` let depth_axis=`$11%0%` set mode interpolate set region/z=`depth_top`:`depth_bottom`/y=`lat_min`:`lat_max`/x=`lon_min`:`lon_max` define viewport/xlim=.0,.95/ylim=0,1 top 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 ! load in first file use RG_ArgoClim_Temp_2014.nc let t1=ARGO_TEMPERATURE_MEAN[d=1]+ARGO_TEMPERATURE_ANOMALY[d=1] ! now set up grid for entire time range define axis/x=20.5E:19.5E:1/unit=degree xlong define axis/y=64.5S:79.5N:1/unit=degree ylat define axis/t="16-Jan-2004":"16-Dec-2023":1/units=months tclim let dyn_p=z[d=1,g=`t1, return=grid`] define grid/x=xlong/y=ylat/z=dyn_p/t=tclim RG_grid ! now load in second temp file use RG_ArgoClim_Temp_2024.nc let t2=ARGO_TEMPERATURE_MEAN[d=2]+ARGO_TEMPERATURE_ANOMALY[d=2] ! now try to put all data onto same grid let t_b1 = t1[gt=RG_grid@asn] let t_b2 = t2[gt=RG_grid@nrst] ! load in first salinity file use RG_ArgoClim_Psal_2014.nc let s1=ARGO_SALINITY_MEAN[d=3]+ARGO_SALINITY_ANOMALY[d=3] ! now load in second psal file use RG_ArgoClim_Psal_2024.nc let s2=ARGO_SALINITY_MEAN[d=4]+ARGO_SALINITY_ANOMALY[d=4] ! now try to put all data onto same grid let s_b1 = s1[gt=RG_grid@asn] let s_b2 = s2[gt=RG_grid@nrst] ! mask out the current data let mskt1 = if t_b1 then 1 else 0 ! define new full time scale data let temp = if mskt1 eq 1 then t_b1 else t_b2 let psal = if mskt1 eq 1 then s_b1 else s_b2 ! checking on depth max. If using meters, depth max is no longer 2000 let max_dep=if `depth_bottom` eq 2000 then 1 else 0 if `depth_axis` then ! you want meters instead of db as the depth axis unit ! first need to change to depth from pressure for temperature let xo=sin(y[g=`t1, return=grid`]*3.1415926/180) let xxo=xo*xo let bot_line=9.780318*(1.0+(5.2788*10^-3+2.36*10^-5*xxo)*xxo) + 1.092*10^-6*dyn_pres let top_line=(((-1.82*10^-15*dyn_pres+2.279*10^-10)*dyn_pres-2.2512*10^-5)*dyn_pres+9.72659)*dyn_pres let dep=top_line/bot_line ! then regrid onto original pressure grid spacing let dyn_t=zaxreplace(temp,dep,z[gz=`dyn_pres, return=grid`]) ! second need to change to depth from pressure for salinity let xos=sin(y[g=`s1, return=grid`]*3.1415926/180) let xxos=xos*xos let bot_line=9.780318*(1.0+(5.2788*10^-3+2.36*10^-5*xxos)*xxos) + 1.092*10^-6*dyn_pres let top_line=(((-1.82*10^-15*dyn_pres+2.279*10^-10)*dyn_pres-2.2512*10^-5)*dyn_pres+9.72659)*dyn_pres let dep=top_line/bot_line ! then regrid onto original pressure grid spacing let dyn_s=zaxreplace(psal,dep,z[gz=`dyn_pres, return=grid`]) ! now set pressure for density calculation let dyn_p=dyn_pres if `max_dep` then let depth_bottom=1900 else ! you want db instead of m as the depth axis unit let dyn_t=temp let dyn_s=psal let dyn_p=z[d=1,g=`t1, return=grid`] endif ! 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 ! setting depth region set region/z=`depth_top`:`depth_bottom` 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 ! begin mapping process ! only plot averaged points if there is data down at the deepest layer let mskd=if podens[x=`lon_min`:`lon_max`,y=`lat_min`:`lat_max`,z=`depth_bottom`] then 1 ! depth is the same let a=if `depth_top` eq `depth_bottom` and `time_start` ne `time_end` then 1 else 0 if `a` then let podens_map=podens[x=`lon_min`:`lon_max`,y=`lat_min`:`lat_max`,z=`depth_top`,l=`time_start`:`time_end`@ave] let con_lev= $12&"()"|*>"*"& fill/nolab/pal=default/set/x=`lon_min`:`lon_max`/y=`lat_min`:`lat_max`/lev="`con_lev`" podens_map ppl shakey 1,,.08,,5,,,,,, ppl fill ! can add contours con/set/over/nolab/lev="`con_lev`" podens_map ppl conset .08,,,,,,,5.7,1.,1 ppl contour/overlay endif !time is the same let b=if `time_start` eq `time_end` and `depth_top` ne `depth_bottom` then 1 else 0 if `b` then let podens_map=if mskd[l=`time_start`] eq 1 then podens[x=`lon_min`:`lon_max`,y=`lat_min`:`lat_max`,l=`time_start`,z=`depth_top`:`depth_bottom`@ave] let con_lev= $12&"()"|*>"*"& fill/nolab/pal=default/set/x=`lon_min`:`lon_max`/y=`lat_min`:`lat_max`/lev="`con_lev`" podens_map ppl shakey 1,,.08,,5,,,,,, ppl fill ! can add contours con/set/over/nolab/lev="`con_lev`" podens_map ppl conset .08,,,,,,,5.7,1.,1 ppl contour/overlay endif !both are same let c= if `time_start` eq `time_end` and `depth_top` eq `depth_bottom` then 1 else 0 if `c` then let podens_map=if mskd[l=`time_start`] eq 1 then podens[x=`lon_min`:`lon_max`,y=`lat_min`:`lat_max`, l=`time_start`,z=`depth_top`] let con_lev= $12&"()"|*>"*"& fill/nolab/set/pal=default/lev="`con_lev`" podens_map ppl shakey 1,,.08,,5,,,,,, ppl fill ! can add contours over the dynamic height plot con/set/over/nolab/lev="`con_lev`" podens_map ppl conset .08,,,,,,,5.7,1.,1 ppl contour/overlay endif !both are different let d= if `time_start` ne `time_end` and `depth_top` ne `depth_bottom` then 1 else 0 if `d` then let podens_map=if mskd[l=`time_start`:`time_end`@ave] eq 1 then podens[x=`lon_min`:`lon_max`,y=`lat_min`:`lat_max`, l=`time_start`:`time_end`@ave,z=`depth_top`:`depth_bottom`@ave] let con_lev= $12&"()"|*>"*"& fill/nolab/set/pal=default/lev="`con_lev`" podens_map ppl shakey 1,,.08,,5,,,,,, ppl fill ! can add contours over the dynamic height plot con/set/over/nolab/lev="`con_lev`" podens_map ppl conset .08,,,,,,,5.7,1.,1 ppl contour/overlay endif ! 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 fill/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`] fill/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`] fill/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 fill/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_podens time_start time_end depth_top_level depth_bottom_level lat_min lat_max lon_min lon_max iland station depth_axis con_lev