Net radiation, potential and actual evapotranspiration in Austria

Abstract

SummaryThe net radiation, potential and actual evapotranspiration for 61 stations in Austria have been calculated from climatological data. Some methods for these calculations have been compared and the indices of aridity for the 61 stations have also been estimated. As a result, it has been suggested that the country could be divided into four climatological regions with different thermal and humid conditions. Zusammenfassung Strahlungsbilanz, potentielle und aktueUe Evapotranspiration in 6sterreichMit ldimatologischen Beobachtungsdaten sind fiir 61 Stationen in Osterreich die Strahlungsbflanz sowie die potentieUe und aktuelle Evapotranspiration berechnet worden. Ftir diese Berechnungen wurden einige Methoden der Verdunstungsbestimmung miteinander verglichen und an einigen Stationen auch Trockenheitsindizes berechnet. Als ein Ergebnis wird vorgeschlagen, daf~ das Land in vier ldimatologische Regionen mit unterschiedlichen Temperatur-und Feuchteverh/iltnissen unterteilt werden kann.

A hydrological investigation using a lumped water balance model: the Aison River Basin case (Greece)

“…The method proposed by Turk (1961), which has been verified by numerous experimental data obtained in many countries (Liang 1982), is based on the following equation estimating the actual annual evapotranspiration. where the thermal indicator L T =300+25 T +0.05 T 3 is a regression describing the runoff response to temperature, E is the actual annual evapotranspiration (mm), P is the annual rainfall (mm) and T is the mean annual temperature ( °C).…”

The impact of evaporation fractionation on the inverse estimation of soil hydraulic and isotope transport parameters

“…This area has a mean annual temperature of 6.9 °C and average annual precipitation (P) of 1035 mm. The annual potential evapotranspiration (ET0) (for grass reference) during the experiment period (May 2002 to February 2007) calculated by the Penman-Monteith equation is about 557 mm, and the corresponding aridity index (P/ET0) is about 1.86, corresponding to a humid climate class (Liang, 1982). The cylindrical lysimeter (with a depth of 150 cm and a surface area of 10000 cm 2 ) was embedded in a rainfed agricultural field (Cambisol) planted with winter rye and fertilized with liquid cattle slurry.…”