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Computes the relative humidity from specific humidity fieldsets. This is a Metview icon function, for detailed documentation please see Relative Humidity.
Anchor relative_humidity_from_dewpoint relative_humidity_from_dewpoint
number relative_humidity_from_dewpoint(t: number, td: number)
vector relative_humidity_from_dewpoint(t: vector, td: vector)
fieldset relative_humidity_from_dewpoint(t: fieldset, td: fieldset)
Computes the relative humidity from the given temperature and dewpoint temperature, where
t: temperature (K)td: dewpoint temperature (K)
The result is the relative humidity in the range of [0, 1]. On error for nil is returned. The computation is based on the following formula:
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r = \frac{e_{wsat}(Td)}{e_{wsat}(T)} |
where ewsat is the saturation vapour pressure over water.
Anchor saturation_mixing_ratio saturation_mixing_ratio
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