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ATMO5332 WRF-ARW Tutorial 0.01 ”

ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

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Page 1: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

ATMO5332WRF-ARW Tutorial

0.01”

Page 2: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

Overview of WRF Modeling System

A bare-bones WRF run involves 4 major steps:

1) WRF Preprocessing System (WPS)

2) Initialization (real)3) Numerical integration

(WRF)4) Visualization (RIP)

Page 3: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

Overview of WRF Modeling System

A bare-bones WRF run involves 4 major steps:

1) WRF Preprocessing System (WPS)

2) Initialization (real)3) Numerical integration

(WRF)4) Visualization (RIP)

Most steps above are capable of running

in parallel mode using multiple CPUs

Page 4: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

Overview of WRF Modeling System

Green boxes = Bare-bones run

Page 5: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WPS

WPS performs all preprocessing of data needed for a WRF numerical integration (define domains, get initial conditions…)

Page 6: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WPS

WPS performs all preprocessing of data needed for a WRF numerical integration (define domains, get initial conditions…)

WPS is controlled through a user-defined namelist called namelist.wps

Page 7: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WPS

WPS performs all preprocessing of data needed for a WRF numerical integration (define domains, get initial conditions…)

WPS is controlled through a user-defined namelist called namelist.wps

WPS is composed of three programs:1) geogrid2) ungrib3) metgrid

Page 8: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WPS

Page 9: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WPS - geogrid

Geogrid has the following purposes:1) Define simulation domain

(size, location, horizontal resolution)

Page 10: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WPS - geogrid

Geogrid has the following purposes:1) Define simulation domain

(size, location, horizontal resolution)

2) Indicate which geographical data will be

used (30-second, 2-minute)

Page 11: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WPS - geogrid

Geogrid has the following purposes:1) Define simulation domain

(size, location, horizontal resolution)

2) Indicate which geographical data will be

used (30-second, 2-minute)3) Choose map projection

(lambert conformal, polar

stereographic, mercator, lat/lon)

Page 12: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

namelist.wps

Page 13: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

namelist.wps (geogrid)

Page 14: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

namelist.wps (geogrid)

(Each column represents a different domain)

Page 15: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WPS - geogrid

Input files needed to run geogrid:1) Geographical data

(/lustre/work/bancell/geogV351)

2) namelist.wps

Page 16: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WPS - geogrid

Input files needed to run geogrid:1) Geographical data

(/lustre/work/bancell/geogV351)

2) namelist.wps Output from geogrid:

1) geo_em.d01.nc (would also have

geo_em.d02.nc for 2nd domain…)

2) geogrid.log files

Page 17: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WPS - geogrid

Final Notes on geogrid geogrid only needs to be run once

for the same domain Like most of the WRF system output,

geo_em.d0X.nc files are netcdf files Nest parameters must be carefully

set in namelist.wps for geogrid

Page 18: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WPS - geogrid

Page 19: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

namelist.wps (geogrid)

(Each column represents a different domain)

Page 20: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WPS - ungrib

ungrib has the following purpose:1) Extract fields from an

external grib file (such as a GFS forecast) and

write this information to WPS file

format

Page 21: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

namelist.wps (ungrib)

Page 22: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

namelist.wps (ungrib)

Page 23: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WPS - ungrib

Input files needed to run ungrib:1) External grib files2) namelist.wps3) A file called Vtable

Page 24: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WPS - ungrib

Input files needed to run ungrib:1) External grib files2) namelist.wps3) A file called Vtable

Output from ungrib:1) WPS format files called

FILE:date2) ungrib.log file

Page 25: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WPS - metgrid

metgrid has the following purpose:1) Interpolate external

meteorological data (originally from grib files,

now in WPS format through program

ungrib) horizontally to defined grid

points

Page 26: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

namelist.wps (metgrid)

Page 27: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

namelist.wps (metgrid)

Page 28: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WPS - metgrid

Input files needed to run metgrid:1) FILE:date files from ungrib2) geo_em.d0X.nc files from

geogrid3) namelist.wps

Page 29: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WPS - metgrid

Input files needed to run metgrid:1) FILE:date files from ungrib2) geo_em.d0X.nc files from

geogrid3) namelist.wps

Output from metgrid:1) A set of files called

met_em.d01.date.nc (and met_em.d0X for nests)

2) metgrid.log files

Page 30: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WPS - metgrid

Final Notes on metgrid and WPS met_em.d01.date.nc files are netcdf

files All 3 WPS programs are run in the

same directory (/lustre/work/your_userID/WPSV3.5.1)

Make sure to clean up files before each new WPS run

Page 31: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WRF Initialization (real)

real has the following purposes:1) Create vertical model levels

Page 32: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WRF Initialization (real)

real has the following purposes:1) Create vertical model levels2) Interpolate meteorological

data to vertical model levels

Page 33: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WRF Initialization (real)

real has the following purposes:1) Create vertical model levels2) Interpolate meteorological

data to vertical model levels

3) Create input files for numerical

integration (WRF)

Page 34: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

real

Input files needed to run real:1) met_em.d0X.data.nc files

from metgrid2) namelist.input (parameter

file for real and wrf)

Page 35: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

real

Input files needed to run real:1) met_em.d0X.data.nc files

from metgrid2) namelist.input (parameter

file for real and wrf) Output from real:

1) wrfinput_d01 and wrfbdy_d01

(additional wrfinput_d0X files if more

than 1 domain)2) Log files (rsl.out.XXXX,

rsl.error.XXXX)

Page 36: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

namelist.input

real runs using parameters from the text file namelist.input, which has the following basic sections:

1) time_control2) domains3) physics4) dynamics5) bdy_control

Page 37: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

namelist.input

Much More

Page 38: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

namelist.input – time_control

Page 39: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

namelist.input – domains

Page 40: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

namelist.input – physics

Page 41: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

namelist.input – dynamics

Page 42: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

namelist.input – bdy_control

Page 43: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

WRF Numerical Integration (wrf)

wrf has the following purpose:1) Numerically approximate the

solutions to the model equations to

produce a forecast!!!! Finally!!!!

Page 44: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

wrf

Input files needed to run wrf:1) wrfinput_d01 (and

wrfinput_d0X for nests), wrfbdy_d01 files from

real2) namelist.input (parameter

file for real and wrf)

Page 45: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

wrf

Input files needed to run wrf:1) wrfinput_d01 (and

wrfinput_d0X for nests), wrfbdy_d01 files from

real2) namelist.input (parameter

file for real and wrf) Output from wrf:

1) wrfout_d01.date.nc (wrfout_d0X.date.nc

for more than one domain)2) Log files (rsl.out.XXXX,

rsl.error.XXXX)

Page 46: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

real and wrf

Final Notes on real and wrf All output files from real and wrf are

netcdf files, and the contents of netcdf files can be viewed with the command:

/lustre/work/apps/netcdf/bin/ncdump –h filename

Page 47: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

real and wrf

Final Notes on real and wrf All output files from real and wrf are

netcdf files, and the contents of netcdf files can be viewed with the command:

/lustre/work/apps/netcdf/bin/ncdump –h filename

To view the contents of a single variable in a netcdf file, such as the variable “Times”, type

/lustre/work/apps/netcdf/bin/ncdump –v Times filename

Page 48: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

real and wrf

Final Notes on real and wrf Make sure to check the log files after a

real and a wrf run to make sure your model run actually ran

Page 49: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

real and wrf

Final Notes on real and wrf Make sure to check the log files after a

real and a wrf run to make sure your model run actually ran

real and wrf are run in the same directory:

/lustre/work/your_userID/WRFV3.5.1/run

Page 50: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

real and wrf

Final Notes on real and wrf Make sure to check the log files after a

real and a wrf run to make sure your model run actually ran

real and wrf are run in the same directory:

/lustre/work/your_userID/WRFV3.5.1/run

Look at file README.namelist in /lustre/work/your_userID/WRFV3.5.1/run for a description of all namelist variables

Page 51: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

real and wrf

Final Notes on real and wrf Make sure to check the log files after a

real and a wrf run to make sure your model run actually ran

real and wrf are run in the same directory:

/lustre/work/your_userID/WRFV3.5.1/run

Look at file README.namelist in /lustre/work/your_userID/WRFV3.5.1/run for a description of all namelist variables

For one-way nests that are run after the parent domain, the program ndown must be run to get the initial and boundary conditions for a nested run…

Page 52: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

real and wrf

Final Notes on real and wrf

Examples of the real/WRF namelist (namelist.input) and the WPS namelist (namelist.wps) can be found in /lustre/work/bancell/wrf_data_ATMO5332

Page 53: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

Nestdown (ndown)

ndown has the following purpose:1) Supply the initial and

boundary conditions for a nest

Page 54: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

ndown

Input files needed to run ndown (for domain 2):

1) wrfinput_d02 from real (renamed

wrfndi_d02)2) wrfout_d01.date.nc file from

mother domain wrf run

3) namelist.input (parameter file for real

and wrf and ndown)

Page 55: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

ndown

Output from ndown:1) wrfinput_d02, wrfbdy_d022) Log files (rsl.out.XXXX,

rsl.error.XXXX)

Page 56: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

Visualization (RIP)

RIP has the following purpose:1) Forecasts have been made,

now we have to look at them – RIP

produces plots of desired forecast variables

Page 57: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

Visualization (RIP)

RIP has the following purpose:1) Forecasts have been made,

now we have to look at them – RIP

produces plots of desired forecast variables

RIP runs using 2 programs:1) ripdp_wrfarw – data

preparation2) rip - plotting

Page 58: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

ripdp_wrfarw

ripdp_wrfarw is run on the command line with 3 arguments:

ripdp_wrfarw data/wrftemp all wrfout_file

ripdp_wrfarw execute command

2) Tells ripdp_wrfarw to process all variables

1) Location where intermediate RIP data will go from ripdp_wrfarw

3) wrfout file from program WRF

Page 59: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

rip

rip is run on the command line using 2 arguments:

rip data/wrftemp sfct.in

rip execute command

1) Temporary data name and location from ripdp_wrfarw

2) rip input file that tells rip what to plot

Page 60: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

The rip input file

A formatted file with the “.in” extension (e.g. slp.in) tells rip what to plot and how to plot it

Page 61: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

The rip input file

A formatted file with the “.in” extension (e.g. slp.in) tells rip what to plot and how to plot it

There are 3 sections to every .in file:1) User input section2) Color table3) Plot specification table

Page 62: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

slp2.in

Much More

Page 63: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

User Input Section

Page 64: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

Color Table

Much More

Page 65: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

Plot Specification Table

Page 66: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

rip

Output from rip is a computer graphics metafile (file with extenstion “.cgm”) that can be viewed with the idt image display tool or converted into .gif image files

Page 67: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

Running WPS/WRF/RIP

Running WPS, real, WRF, and RIP requires a variety of scripts that must be submitted to the hrothgar queue at the HPCC to run

Page 68: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

Running WPS/WRF/RIP

Running WPS, real, WRF, and RIP requires a variety of scripts that must be submitted to the hrothgar queue at the HPCC to run

The following is a step-by-step guide on how to setup the required directories, get the required files, and run WPS/real/WRF/RIP from your own directory

Page 69: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

Required WPS Directory

Go to directory /lustre/work/your_userID

Type “cp –r /lustre/work/bancell/WPSV3.5.1

.”- This copies the WPS directory

structure to your work directory

- This is where you will run the WPS programs (in /lustre/work/your_userID/WPSV3.5.1)

Page 70: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

Required real/WRF Directory

Go to directory /lustre/work/your_userID

Type “cp –r /lustre/work/bancell/WRFV3.5.1

.”- This copies the real/WRF

directory structure to your work directory

- This is where you will run real and wrf (in /lustre/work/your_userID/WPSV3.5.1/run)

Page 71: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

Required RIP directory

Go to directory /lustre/work/your_userID

Type “cp –r /lustre/work/bancell/RIP4 ./RIP”

- This copies the RIP directory structure to

your work directory- This is where you will run RIP(in /lustre/work/your_userID/RIP)

Page 72: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

Required Submittal Script Directory

Go to directory /lustre/work/your_userID

Type “cp –r /home/bancell/sub_ATMO5332

./sub”

- This copies the directory structure containing

the HPCC submittal scripts to your work

directory- This is where you will submit the

scripts that run the WPS programs, real,

wrf, and RIP (in /lustre/work/your_userID/sub)

Page 73: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

Running WPSgeogrid

Get the wps namelist and modify for your case in (make sure it’s in/lustre/work/your_userID/WPSV3.5.1)

Go to /lustre/work/your_userID/sub Modify geogrid_normal.bash for the correct

directory paths Type “qsub geogrid_normal.bash” Make sure output files geo_em.d0X are

generated in /lustre/work/your_userID/WPSV3.5.1

Check geogrid log files in the WPS directory and error_out_geogrid, submit_out_geogrid files in the sub directory if you have problems

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Running WPSgeogrid – Viewing your domain

To view the domain you want to create with geogrid, use the plotgrids.ncl utility by following these steps:1) Make sure you are in /lustre/work/your_userID/WPSV3.5.12) Type “export NCARG_ROOT=/lustre/work/apps/ncarg”3) Make sure Xming is running4) Type “/lustre/work/apps/ncl/bin/ncl util/plotgrids.ncl”

After running plotgrids.ncl, a picture of your domain should pop up on your screen (as specified by your namelist.wps)

Use this utility to tinker with your domain until it looks how you want it to look, then run geogrid.exe

Page 75: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

Running WPSungrib

Get GFS files for your case from /lustre/work/bancell/wrf_data_ATMO5332 and put them in /lustre/work/your_userID/WPSV3.5.1/data

Go to /lustre/work/your_userID/WPSV3.5.1 and then type “./link_grib.csh data/*”

- This links files to the GFS files in /data

Go to /lustre/work/your_userID/sub Modify ungrib_normal.bash for the

correct directory paths

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Running WPSungrib cont’d

Type “qsub ungrib_normal.bash” Make sure all FILE:date files exist in

/lustre/work/your_userID/WPSV3.5.1, check ungrib.log file in that directory as well as submit_out_ungrib, error_out_ungrib log files in sub directory if there are problems

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Running WPSmetgrid

Go to /lustre/work/your_userID/sub Modify metgrid_normal.bash for the

correct directory paths Type “qsub metgrid.bash” Make sure all met_em.d0X files exist

in /lustre/work/your_userID/WPSV3.5.1, check metgrid log file in that directory as well as submit_out_metgrid, error_out_metgrid log files in sub directory if there are problems

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Running real Go to

/lustre/work/your_userID/WRFV3.5.1/run

Copy all met_em.d0X files from the WPS directory to the above WRF directory

Modify the file namelist.input for your case

Go to /lustre/work/your_userID/sub Modify real_normal.bash for the

correct directory paths Type “qsub real.bash”

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Running real cont’d Make sure the files wrfinput_d0X

and wrfbdy_d01 exist in /lustre/work/your_userID/WRFV3.5.1/run, check rsl log files in that directory as well as submit_out_real, error_out_real log files in the sub directory if you have problems

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Running wrf Go to /lustre/work/your_userID/sub Modify wrf_normal.bash for the

correct directory paths Type “qsub wrf_normal.bash” Make sure the file

wrfout_d0X.date.nc exists in /lustre/work/your_userID/WRFV3.5.1/run, check rsl log files in that directory as well as submit_out_wrf, error_out_wrf log files in the sub directory if you have problems

Make sure your run finished by looking at the end of the rsl.out.0000 file in the WRF directory

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Running RIP RIP will be run on the command line Go to /lustre/work/your_userID/RIP Copy the wrfout files from the wrf run

to the above directory Type “./ripdp_wrfarw data/wrftemp all

wrfout*” – this runs ripdp_wrfarw and prepares data for rip

Modify /lustre/work/your_userID/RIP/slp2.in for your desired plot, rename file sfct.in

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Running RIP cont’d rip needs 2 environmental variables

to be set to run properly. Type the following:

1) “export RIP_ROOT=.”

2) “export NCARG_ROOT=/lustre/work/apps/ncarg” Type “./rip data/wrftemp sfct.in” –

this runs rip and produces a single .cgm file

Convert the single file sfct.cgm to gif files valid at each time by typing “./cgmtogif sfct.cgm”

You can loop through the gif images with the command “/lustre/work/apps/xanim2801/xanim *.gif”

Page 83: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

Final WPS/WRF/RIP Notes

Clean up all files!!!! (WPS, real, wrf, RIP, and sub)

WRF-ARW V3 User’s Guide is found at:

http://www.mmm.ucar.edu/wrf/users/docs/user_guide_V3/ARWUsersGuideV3.pdf

RIP V4 User’s Guide is found at:http://www.mmm.ucar.edu/mm5/documents/ripug_V4.html

These links are also on class website

http://www.mmm.ucar.edu/wrf/users/docs/user_guide_V3/ARWUsersGuideV3.pdf
http://www.mmm.ucar.edu/wrf/users/docs/user_guide_V3/ARWUsersGuideV3.pdf
http://www.mmm.ucar.edu/mm5/documents/ripug_V4.html
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First Things First

To run WPS/WRF/RIP at HPCC on a shell using a PC, you need to download 3 things:

- Putty (gives you the shell, make sure to enable

X11 forwarding at ConnectionSSHX11), use

address hrothgar.hpcc.ttu.edu- Xming (gives ability to bring up

external windows) These are both available through the

HPCC website under the “User Guides” link

- Xming Fonts

Page 85: ATMO5332 WRF-ARW Tutorial 0.01”. Overview of WRF Modeling System A bare-bones WRF run involves 4 major steps: A bare-bones WRF run involves 4 major steps:

First Things First

On a Mac, no downloads needed! Just bring up a shell and ssh to hrothgar with:

ssh –X [email protected]

Note: When you login to hrothgar, you’ll be in your

home directory (/home/your_userID)

disk space limit on /home/your_userID: 150 GB

disk space limit on /lustre/work/your_userID: 750 GB


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