Abstract: The standardized precipitation evapotranspiration index (SPEI) is a key drought monitoring metric, with potential evapotranspiration (PET) typically estimated using the Thornthwaite (TH) or ...

Institute of Translational Medicine, Semmelweis University, Üllői út 26, Budapest 1085, Hungary ...

Elysse Bell is a finance and business writer for Investopedia. She writes about small business, personal finance, technology, and more. Vikki Velasquez is a researcher and writer who has managed, ...