Available Parameters

Agricultural Parameters

Below is an overview of all agricultural parameters:

Evapotranspiration | Growing Degree Days | Grass Land Temperature Sum | Leaf Wetness | Phytophthora Negative | Most Similar Year

Every parameter is now explained in more detail:



Evapotranspiration in millimeters accumulated for 1h, 3h, 6h, 12h, or 24h. Evapotranspiration (ET) is the sum of evaporation and plant transpiration from the Earth's land and ocean surface to the atmosphere. Evaporation accounts for the movement of water to the air from sources such as the soil, canopy interception, and bodies of water. Transpiration accounts for the movement of water within a plant and the subsequent loss of water as vapor through stomata in its leaves. Evapotranspiration is an important part of the water cycle.


Available intervals: 1h, 3h, 6h, 12h, 24h



Growing Degree Days

Growing degree days (GDD), also called growing degree units (GDUs), are a heuristic tool in phenology. GDD are a measure of heat accumulation used by horticulturists, gardeners, and farmers to predict plant and animal development rates such as the date that a flower will bloom, an insect will emerge from dormancy, or a crop will reach maturity.




Grass Land Temperature Sum

This is a special form of the GDD (Growing degree days). It is used for the date determination for the start of field work after the winter. Accumulation of the mean day temperatures starts on the first of January of the indicated year.




Leaf Wetness

Leaf wetness describes the amount of dew and precipitation left on surfaces. It is used for detection of fog and dew conditions and early detection of rainfall. The output is binary where 1 indicates wetness.




Phytophthora Negative Prognosis

The Phytophthora negative prognosis is an index for the necessity of safety measures against potato blight. No safety measures against Phytophthora infestans are necessary up to a value of 150.




Most Similar Year

The year in which conditions on a particular date were most similar to those on the queried year.