Tonga Mean Drought Index

Tonga Mean Drought Index data was reported at -0.069 NA in 2021. This records a decrease from the previous number of 0.160 NA for 2020. Tonga Mean Drought Index data is updated yearly, averaging -0.072 NA from Dec 1960 (Median) to 2021, with 62 observations. The data reached an all-time high of 2.748 NA in 1971 and a record low of -2.701 NA in 1983. Tonga Mean Drought Index data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Tonga – Table TO.World Bank.WDI: Environmental: Climate Risk. The SPEI fulfills the requirements of a drought index since its multi-scalar character enables it to be used by different scientific disciplines to detect, monitor, and analyze droughts. Like the sc-PDSI and the SPI, the SPEI can measure drought severity according to its intensity and duration, and can identify the onset and end of drought episodes. The SPEI allows comparison of drought severity through time and space, since it can be calculated over a wide range of climates, as can the SPI.;Global SPEI database (SPEIbase). https://spei.csic.es/database.html;;

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What was Tonga's Tonga Mean Drought Index in 2021?

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