id	keyword
ajst-20791	data
ajst-20791	elevation
ajst-20791	surface
ajst-20791	icesat-2
ajst-20791	laser
ajst-20791	changes
ajst-20791	photon
ajst-20791	figure
ajst-20791	area
ajst-20791	accuracy
ajst-20791	ground
ajst-20791	atl03
ajst-20791	surface elevation
ajst-20791	study