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RIP. A tool to create plots from WRF model output. RIP (Read, Interpolate, Plot). Developed over many years by Mark Stoelinga of the University of Washington

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slide1

RIP

A tool to create plots from WRF model output

rip read interpolate plot
RIP(Read, Interpolate, Plot)
  • Developed over many years by Mark Stoelinga of the University of Washington
  • Not a gui-driven visualization tool. To use rip, you edit a configuration file and run the rip executable, then view the static images created by rip
  • Allows user fine control over nearly all aspects of the plot; easy* to make publication-quality graphics (*once you get a feel for the arcane commands)
  • Not so great as a “quick-look” tool
rip capabilities include
RIP capabilities include…
  • Cross-sections on various types of quasi-horizontal surfaces
    • model sigma, pressure, height, isentropic, etc.
  • Vertical cross-sections along arbitrary lines
  • Vertical profiles and skew-T diagrams
  • Contours, vectors, barbs, color-fill, maps, labels, etc., and almost any combination thereof
  • Difference fields between two model jobs
for the colloquium case studies
For the colloquium case studies…
  • Input datasets for RIP have been created for you…
    • i.e., you can skip the “ripdp” step
    • Sub-sampled and windowed for easier plotting on the classroom machines
    • Selected forecast hours to keep disk usage under control
  • Sample configuration files have been created for you…
    • to give you a starting point for creating your own configuration files
  • Plot files of many useful fields have been created for you…
    • lots of images are available for you to peruse before you even run RIP
    • Images on the full model grid, not sub-sampled or windowed
    • Images at hourly time interval
to use rip
To use RIP
  • 1) Prepare the data
      • Largely done for you
  • 2) Prepare the instruction file
      • This is the hard part. We offer some samples to get you started
  • 3) Run the program
  • 4) View the results
      • idt command
slide6

&userin

title="RIP_example2"

idotitle=1,titlecolor='def.foreground',

ptimes=18,24,30,

ptimeunits='h',tacc=120,timezone=-7,iusdaylightrule=1,

iinittime=1,ifcsttime=1,ivalidtime=1,inearesth=0,

flmin=.09, frmax=.92, fbmin=.10, ftmax=.85,

ntextq=0,ntextcd=0,fcoffset=0.0,idotser=0,

idescriptive=1,icgmsplit=0,maxfld=10,itrajcalc=0,imakev5d=0

&end

===========================================================================

---------------------- Plot Specification Table ---------------------

===========================================================================

#

# Vertical cross sections

#

feld=the; ptyp=vc; vcor=z; vwin=0,5; crsa=25,20; crsb=120,180; cint=1.0

feld=uuu,vvv,www; ptyp=vv;

feld=tic; ptyp=vb;

===========================================================================

feld=the; ptyp=vc; vcor=z; vwin=0,5; crsa=25,20; crsb=120,180; cint=2.0

feld=uuu,vvv; ptyp=vw; vcmx=-1;

feld=tic; ptyp=vb;

===========================================================================

#

# Color Fill (smooth)

#

feld=wsp; ptyp=hc; vcor=s; levs=1fb; cmth=fill; cint=0.5; cosq=0,white,5,yellow,10,green,15,blue,20,red;

feld=map; ptyp=hb; ouds=solid;

feld=tic; ptyp=hb;

===========================================================================

title and ptimes

may be the only

things you change

in the namelist

section

feld=<something>;

ptyp=<something>

will begin almost

every line

“==============“

separates one frame

from the next

slide7

===========================================================================

#

# Color Fill (discontinuous thresholds)

#

feld=wsp; ptyp=hc; cmth=fill; cosq=0,white,5,white,5,yellow,10,yellow,10,green, >

15,green,15,blue,20,blue,20,red;

feld=map; ptyp=hb; ouds=solid;

feld=tic; ptyp=hb;

===========================================================================

#

# Difference fields between sensitivity studies

#

feld=tmc; ptyp=hc; vcor=s; levs=1fb; diff=myj/myj; cmth=fill; cint=0.25; cbeg=-8; >

cosq=-8,cyan,-4,blue,-0.5,white,0.5,white,4,red,8,green

feld=map; ptyp=hb; ouds=solid;

feld=tic; ptyp=hb;

===========================================================================

#

# Wind vectors

#

feld=uuu,vvv; ptyp=hv; vcor=p; levs=850, 700,500; intv=8; vcmx=10;

feld=map; ptyp=hb; ouds=solid;

feld=tic; ptyp=hb;

===========================================================================

#

# Wind barbs

#

feld=uuu,vvv; ptyp=hv; vcor=z; levs=1.5; intv=10; vcmx=-1; fulb=10kts

feld=map; ptyp=hb; ouds=solid;

feld=tic; ptyp=hb;

===========================================================================

“>” at the end of a line

is a continuation mark

vcor specifies vertical

coordinate to use

levs specifies levels

to plot

slide8

===========================================================================

#

# Skew-T diagrams

#

feld=tic; ptyp=sb; sloc=39.31lat,-94.72lon; hodo; sndg;

feld=tmc; ptyp=sc; linw=2; colr=red;

feld=tdp; ptyp=sc; linw=2; colr=blue;

feld=uuu,vvv; ptyp=sv; hodo; sndg

===========================================================================

#

# Vertical profiles of other variables:

#

feld=www; ptyp=pc; sloc=39.31lat,-94.72lon;

===========================================================================

#

# Lines, boxes, bullets, annotations

#

feld=line; ptyp=hb; crsa=120,10; crsb=39.31lat,-94.72lon; colr=red; linw=3

feld=bullet; ptyp=hb; crsa=KMCI; colr=blue; linw=3

feld=box; ptyp=hb; crsa=120,40; crsb=160,80; colr=dark.green; linw=3

feld=bullet; ptyp=hb; crsa=100,180; titl=Put_your_label_here;

feld=map; ptyp=hb; ouds=solid;

feld=tic; ptyp=hb;

===========================================================================

#

# Windowing

#

feld=uuu,vvv; ptyp=hv; vcor=s; levs=1fb; intv=1; vcmx=-1; fulb=10kts; >

xwin=120,160; ywin=40,80;

feld=map; ptyp=hb; ouds=solid;

feld=tic; ptyp=hb;

===========================================================================

Coordinates may be

specified in terms of

lat/lon, grid x/y, and

station ID

Semicolons separate

keyword settings

Commas separate

multiple values for a

single keyword setting

Whitespace is ignored,

but blank lines

are a no-no

# anywhere in a line

comments out the line

rip suggestions
RIP suggestions
  • Bookmark the online documentation and refer to it often
  • Beware of commas and semicolons, and avoid blank lines
  • Don’t plot too much at once
    • It can take a long time, and you just end up waiting
  • Don’t spend too much time getting a plot to look “just right”
  • Some keyword settings are remembered from frame to frame. Some are forgotten.