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High temperature and evapotranspiration

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Increasing the high temperature will lead to an increase in reference evapotranspiration when all other variables in the Penman-Monteith equation are held constant. This example uses data for Turnberry, Scotland, on September 8, 2023, and shows what the ETo would have been had the high temperature been different.

See also Temperature vs ETo, which shows a relationship between temperature and ETo, without controlling for solar radiation or any other variables.

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