grid2land.sh

#!/bin/bash
#sDate = start date in the format YYYYMMDDHH
#eDate = end date in the format YYYYMMDDHH

# declaring arguments and telling user what they are
echo "The start date of the timeframe is $1"
sDate=$1
echo "The end date of the timeframe is $2"
eDate=$2
echo "The directory of your grided data is $3"
gDir=$3
echo "The desired output directory is $4"
oDir=$4
landname=$5

# splitting up dates into components
sYear=$(echo $sDate | cut -c1-4)
sMonth=$(echo $sDate | cut -c5-6)
sDay=$(echo $sDate | cut -c7-8)
sHour=$(echo $sDate | cut -c9-10)
eYear=$(echo $eDate | cut -c1-4)
eMonth=$(echo $eDate | cut -c5-6)
eDay=$(echo $eDate | cut -c7-8)
eHour=$(echo $eDate | cut -c9-10)

# get the grid cells for the requested land unit 
land_cfg=`fgrep -h $landname seg_maps/* | head -n 1`
# yields a param pair list in format x371y99
met_land_cells=${land_cfg/$landname/}
# use a // to escape x I think
met_land_cells=${met_land_cells//x/}
# replace y with aspace use a // to escape y I think
met_land_cells=${met_land_cells//y/ }

cYear=$sYear
complete=0
while [ $complete != 1 ]; do
 if [ $cYear -le $eYear ]; then
    echo "NLDAS2_GRIB_to_ASCII $gDir $oDir $cYear 01 01 00 $cYear 12 31 23 $met_land_cells"
    NLDAS2_GRIB_to_ASCII $gDir $oDir $cYear 01 01 00 $cYear 12 31 23 $met_land_cells
  else
    complete=1
  fi
  cYear=$[$cYear+1]
done