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How to Read the Map: The map shows the number of days per year when the maximum temperature above 25°C. Green indicates zero or a low number of Plant Heat Stress days whilst red represents a high number of days. See also the Person Heat Stress Indicator (count of days above 32°C).

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Observed 1961-2020, modelled 2021-2080. For more information about maps click Here

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1961
2021
2079

Plant Heat Stress

The Plant Heat Stress Indicator is the count of the number of days in a year when the maximum temperature is above 25°C. This value is considered as indicator of when crops in general may experience heat stress that may affect growth and implies additional water requirements. The actual level of heat stress will vary between crops and availability of water and canopy cooling by transpiration.

Calculation: count of days when Tmax > 25°C

Means for two Observed and two Future Projection Periods

1961-1990 Average

1991-2020 Average

2021-2050 Average

2051-2080 Average