MODIS MOD11A1 Reproject Change Data Value

I’m import and reprojected MOD11A1 with GDAL 1.10….my shell script is easy..

for file in *.hdf; do
echo "map: $file"

gdal_translate -of Gtiff -ot Int16 HDF4_EOS:EOS_GRID:"$file":MODIS_Grid_Daily_1km_LST:LST_Day_1km  -a_nodata -9999 out/${file}.tif
echo "out/"${file}".tif" | awk 'BEGIN{FS=".";}{ print "mv "$0" "$1"."$2"."$3"."$4"."$5"."$7}' |sh`

but when running script reprojected
something is wrong with data…

for file in *.tif; do
echo "map: $file"


gdalwarp -s_srs "+proj=sinu +lon_0=0 +x_0=0 +y_0=0 +a=6371007.181 +b=6371007.181 +units=m +no_defs" -t_srs EPSG:32719 
    -te 333524.4980000000214204 6618581.1791345691308379 422017.2268572300090455 6679275.1449999995529652 -tr 926.625 -926.625 
    -dstnodata -9999 -ot Int16 $file utm/${file}

done

look my screenshot on qgis….

any idea how to solve?