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PhD. Topics

Institute of Hydrology

Effect of different soil species on dew formation on standard grass surface
PhD. program
Name of the supervisor
Ing. Milan Gomboš, CSc.
Receiving school
Stavebná fakulta STU
Dew is condensed water. It is formed on the surface of all objects whose surface temperature is below the dew point of the surrounding air. Dew point is generated by isobaric cooling. At this temperature, air becomes saturated without being supplied with water vapour from outside. At the decrease of the plant cover temperature below the dew point, water vapour is condensed and dew is formed. Dew is considered as one of the forms of precipitation. It is captured by both soil surface and vegetation interception capacity from which it is gradually evaporated. Plants cover different types of soils with different heat capacity and thermal inertia. These parameters play a key role in soil water content which is limited by retention characteristics of soil environment.
The topic of the proposed dissertation thesis is based on the hypothesis that at the same hydrologic and hydro-meteorologic conditions, the temperature of the vegetation is different depending on the soil type it covers. For this reason, dew formation is also different. The aim of the proposed thesis is to quantify the impact of different soil types on dew formation on the standard grass surface. Dew formation processes, its interception by interception capacity and dew evaporation will be quantified on different soil types. During this process, the volumes of condensed water will be evaluated. To achieve the objectives of the work, measurements in the lysimetric station in Petrovce water junction will be performed.