Σύγκριση μεθόδων

	Δείκτης Τυποποιημένης Εξατμισοδιαπνοής Βροχόπτωσης	Δείκτης Τυποποιημένης Βροχόπτωσης
Πεδίο	Γεωφυσική	Γεωφυσική
Οικογένεια	Process / pipeline	Process / pipeline
Έτος προέλευσης	2010	1993
Δημιουργός	Vicente-Serrano, Beguería, and López-Moreno	Thomas McKee, Neil Doesken, and John Kleist
Τύπος	Probability-based water deficit indicator	Probabilistic drought indicator
Θεμελιώδης πηγή	Vicente-Serrano, S. M., Beguería, S., & López-Moreno, J. I. (2010). A multiscalar drought index sensitive to global warming: the Standardized Precipitation Evapotranspiration Index. Journal of Climate, 23(7), 1696-1718.	McKee, T. B., Doesken, N. J., & Kleist, J. (1993). The relationship of drought frequency and duration to time scales. Proceedings of the Eighth Conference on Applied Climatology, 179-184.
Εναλλακτικές ονομασίες	SPEI	SPI
Συναφείς	3	3
Σύνοψη	The Standardized Precipitation Evapotranspiration Index (SPEI) is a climate index that combines precipitation and temperature (via reference evapotranspiration) to characterize water deficits and droughts. Developed by Vicente-Serrano and colleagues in 2010, SPEI extends the SPI framework to account for the combined effect of precipitation deficiency and increased evaporative demand from warming, providing a more physically-based drought metric than precipitation-only indices.	The Standardized Precipitation Index (SPI) is a climate index that quantifies precipitation anomalies relative to historical norms, standardized to account for differences in precipitation climatology across regions. Introduced by McKee, Doesken, and Kleist in 1993, SPI has become a primary tool for drought detection and characterization, adopted by meteorological agencies worldwide for operational drought monitoring and early warning systems.