The First Sun Near Ulaka Village on the Bloke Plateau, Internal Karst Region, SW Slovenia
11-august-2020: shot taken from the the churchyard of Cerkev Sv. Miklavža/Sveti Miklavž/Saint Nicholas Church (751m a.s.l.).
After a clear and windless night, the nocturnal thermal drop, or the loss of heat from the ground to the space, called irradiation or reverse radiation, intensifies the increase in humidity until it reaches the "dew point" with the saturation of water vapor and condensation in stratified fog banks or in filmy fogs, soon dissipated by the (summer) sun.
Humidity and temperature, in a "perfect system", are inversely proportional, while in nature this law loses its full meaning, but the swing between humidity and temperature is always present, albeit in an irregular way. The "DEW POINT" is the VIRTUAL TEMPERATURE at which the air mass must fall to have the saturation of water vapor (100% relative humidity). In arid areas or on very dry days the dew point is naturally much lower than the air temperature, while in foggy or rainy weather they coincide or tend to coincide.
A low "dew point", considered the variables of a "non-perfect system", can be evaluated to predict frost or snowfall with (starting) air temperatures well above zero Celsius degree, while a high dew temperature implies a considerable potential energy load (high heat and humidity, Cape Index) and therefore can help in the prediction of extreme phenomena related to thunderstorm systems.
The First Sun Near Ulaka Village on the Bloke Plateau, Internal Karst Region, SW Slovenia
11-august-2020: shot taken from the the churchyard of Cerkev Sv. Miklavža/Sveti Miklavž/Saint Nicholas Church (751m a.s.l.).
After a clear and windless night, the nocturnal thermal drop, or the loss of heat from the ground to the space, called irradiation or reverse radiation, intensifies the increase in humidity until it reaches the "dew point" with the saturation of water vapor and condensation in stratified fog banks or in filmy fogs, soon dissipated by the (summer) sun.
Humidity and temperature, in a "perfect system", are inversely proportional, while in nature this law loses its full meaning, but the swing between humidity and temperature is always present, albeit in an irregular way. The "DEW POINT" is the VIRTUAL TEMPERATURE at which the air mass must fall to have the saturation of water vapor (100% relative humidity). In arid areas or on very dry days the dew point is naturally much lower than the air temperature, while in foggy or rainy weather they coincide or tend to coincide.
A low "dew point", considered the variables of a "non-perfect system", can be evaluated to predict frost or snowfall with (starting) air temperatures well above zero Celsius degree, while a high dew temperature implies a considerable potential energy load (high heat and humidity, Cape Index) and therefore can help in the prediction of extreme phenomena related to thunderstorm systems.