Standardized Precipitation and Evapotranspiration Index - Agrovoc

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Standardized Precipitation and Evapotranspiration Index

L’indice normalisé précipitations moins évapotranspiration (INPE) est calculé à peu près de la même façon que l’INP. La principale différence est que l’INP évalue la variance des précipitations, tandis que l’INPE tient également compte de la demande de l’évapotranspiration, qui est soustraite de toute accumulation de précipitations avant l’évaluation. Contrairement à l’INP, l’INPE saisit l’impact principal de l’augmentation des températures sur la demande en eau.
Created: 8/8/25
(fr)
SPEI, hali hazırda operasyonel olarak kullanılmakta olan SPI gibi uzun dönemli gözlemlere uygun olasılık dağılımının tespit edilerek normal dağılıma dönüştürülmesine dayanan bir yöntemdir. SPI’nın yalnızca aylık yağış verisini girdi olarak kullanmasına karşılık, SPEI yağış ve PET arasındaki fark verisini kullanmaktadır.
Source: https://www.mgm.gov.tr/FILES/genel/makale/speiturkiyeiklimi.pdf
Created: 8/8/25
(tr)
The Standardized Precipitation Evapotranspiration Index (SPEI) is computed similarly to the SPI. The main difference is that SPI assesses precipitation variance, while SPEI also considers demand from evapotranspiration which is subtracted from any precipitation accumulation prior to assessment. Unlike the SPI, the SPEI captures the main impact of increased temperatures on water demand.
Created: 8/8/25
Last modified: 8/8/25
(en)

http://aims.fao.org/aos/agrovoc/c_bb3a1c89

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