3D-Var ClimPACT Dataset Licensedatabase Expert Team on Climate Change Detection and Indices (ETCCDI) Expert Team on Sector-specific Climate Indices (ET-SCI) GLDAS arthropod vector attribute reduction climate extreme indices (CEIs) core attribute data assimilation data imputation data quality data scarcity decision trees earth-science data ensemble learning environmental modeling environmental observations geophysical monitoring invasive species k-Nearest Neighbors machine learning magnetotelluric monitoring microhabitat missing data multi-class classification processing remote sensing rough set theory