Degree days –
Also known as Growing Degree Days or #GDD
Calculates how many “heating days” there have been during a growing season & is calculated using the hourly temps since planting or the start of the season.
Used to estimate the growth & development of plants & insects.
Soil temperature –
Indicates the #temperature of the #soil itself & is calculated based on recent temperatures.
Used to determine when the soil has warmed enough for various agricultural activities such as sowing seeds.
Soil moisture -
Indicates the amount of #moisture in the soil that is available to plants & is calculated based on recent precipitation & other weather conditions.
Used to determine expected growth rates & when watering may be required.
Evapotranspiration -
Calculates the amount of moisture that is lost from the soil & plants based on existing conditions including temperature & humidity.
Also used to determine when watering is needed as water lost via #evapotranspiration is removed from moisture in the soil.
These agricultural elements and many other weather elements including standards such as #temperature, #precipitation, #wind, #humidity & more are available in the Visual Crossing Weather #API.