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HWRF DATA DOWNLOAD FROM HPSS

module load hpss hsi get /NCEPDEV/emc-hwrf/5year/Zaizhong.Ma/coastal/hiresmasks/ida_2021/expens_ida/*.tar

extract only specific files (for example ida09l.2021082818.hwrfprs.storm.0p015.f008.grb2 ) data from tar file with command

#tar -xf ida09l.202108*.tar --wildcards --no-anchored 'hwrfprs.storm.grib2' // reading all tar files at once and extract the specific data input files

we extracted 2 days data for Hurricane Ida

for example

tar -xf ida09l.2021082818.tar --wildcards --no-anchored 'hwrfprs.storm.grb2' tar -xf ida09l.2021082900.tar --wildcards --no-anchored 'hwrfprs.storm.grb2'

Move the extracted data to the WPS Directory

mv hwrfprs.storm ../WPS/ cd ../WPS

Download GFS data to provide land surface datasets Note: HWRF model just provides 10-meters hight and up data.

data sourc https://rda.ucar.edu/datasets/ds083.2

create csh file to download data get_gfsdata.csh

chmod 777 get_gfsdata.csh ./get_gfsdata.csh eHYViBlg # eHYViBlg is password for rda ucar access data. anyone can create this

Once the data is downloaded - we have to go back to WPS folder

cd ../WPS

FIRST STEP (GEOGRID.EXE)

Edit namelist.wps

Add high resolution elevaton dataset (10-meter) Add highh resolution landuse dataset (30-meter)

for example

geog_data_res = 'nlcd2011_1s+3dep_ida+30s' # for all 3 domains

Create Domain using WRFDOMAIN WIZARD for landfall location

Edit namelist.wps and add domain information

run command for geogrid.exe

sbatch job_geogrid.sh

SECOND STEP (UNGRIB.exe)

Link HWRF grib file and run ungrig.exe (Vtable for HWRF) Link GFS_land file and run ungrib.exe (Vtable for GFS_land)

sbatch ungrib.exe

THIRD STEP (METGRID.exe)

sbatch metgrid.exe

RUN REAL

cd ../WRF/run

Edit namelist.input

sbatch job_real.exe

RUN WRF

cd ../WRF/run

sbatch run_wrf.sh

ADCRIC INUNDATION

High Water mark implementation is made with two steps:

  1. ADCIRC High water mark is one dimensional dataset and unstructured. We have to map this data on to wrf grid. We have deveopled ncl scripts

;This is an NCL/ESMF template file for regridding from an ; unstructured grid to a rectilinear grid. It uses ESMF_regrid ; to do the regridding.

ncl < ESMF_unstruct_to_rect.ncl

  1. Now we have to map unstructured data on to wrf map and replace coastal land to inundation.

ncl < var_regrid_domain.ncl

  1. Now replace land point to inundation grid points using ncl scripting

ncl < change_wrfrst.ncl

Now WRF restart files can be used again to rerun the model with updated inundations.