hydrological drought agricultural drought 3 climate change 3 drought 3 meteorological drought 3 History of engineering & technology 2 Research & information: general 2 Technology: general issues 2 agriculture 2 precipitation 2 risk management 2 smallholder farmers 2 ANN 1 ARIMA 1 ASAL 1 ASALs 1 Alabama River Basin 1 AnnAGNPS 1 BMP 1 Bayesian principal component analysis (BPCA) 1 Belize 1 CESM1-BGC.1 1 CNRM-CM5 1 CO2 emissions 1 CORDEX 1 Carpathian Mts 1 Central Valley 1 China 1 Copernicus Sentinel-1 1 DOC 1