path=/data/public/HYCOM/shian/hindcast/GLBv0.08
for y in {2013..2017..1}
do
  for m in {01..12..1}
  do
    cd ${path}/${y}/${m}
    echo "do ${y}/${m}"
    tar -czvf ${y}_${m}.tar.gz *.nc
  done
done