id	keyword
ajst-27321	drought
ajst-27321	research
ajst-27321	climate
ajst-27321	vol
ajst-27321	change
ajst-27321	disaster
ajst-27321	analysis
ajst-27321	sensing
ajst-27321	remote
ajst-27321	risk
ajst-27321	precipitation
ajst-27321	studies
ajst-27321	drought disaster
ajst-27321	index