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Start Over Creator Parajka, Juraj

1. Hydrology of the Carpathian Basin: interactions of climatic drivers and hydrological processes on local and regional scales - HydroCarpath Research

Creator:
Szolgay, Ján , Blöschl, Günter , Gribovszki, Zoltán , and Parajka, Juraj
Format:
počítač and online zdroj
Type:
model:article and TEXT
Subject:
Carpathian basin, evapotranspiration, runoff coefficient, hydrological regime, CN number, and climate change
Language:
Slovak
Description:
The paper introduces the Special Section on the Hydrology of the Carpathians in this issue. It is the result of an initiative of the Department of Land and Water Resources Management of the Slovak University of Technology in Bratislava, the Institute of Hydraulic Engineering and Water Resources Management of the TU Vienna and the Institute of Geomatics and Civil Engineering of the University of Sopron to allow young hydrologists in the Carpathian Basin (and from outside) to present their research and re-network on the emerging topics of the hydrology of the Carpathians at the HydroCarpath Conferences since 2012.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

2. Partitioning evapotranspiration using stable isotopes and Lagrangian dispersion analysis in a small agricultural catchment

Creator:
Hogan, Patrick , Parajka, Juraj , Heng, Lee , Strauss, Peter , and Blöschl, Günter
Format:
počítač and online zdroj
Type:
model:article and TEXT
Subject:
evapotranspiration partitioning, stable isotopes, and Lagrangian dispersion theory
Language:
Slovak
Description:
Measuring evaporation and transpiration at the field scale is complicated due to the heterogeneity of the environment, with point measurements requiring upscaling and field measurements such as eddy covariance measuring only the evapotranspiration. During the summer of 2014 an eddy covariance device was used to measure the evapotranspiration of a growing maize field at the HOAL catchment. The stable isotope technique and a Lagrangian near field theory (LNF) were then utilized to partition the evapotranspiration into evaporation and transpiration, using the concentration and isotopic ratio of water vapour within the canopy. The stable isotope estimates of the daily averages of the fraction of evapotranspiration (Ft) ranged from 43.0–88.5%, with an average value of 67.5%, while with the LNF method, Ft was found to range from 52.3–91.5% with an average value of 73.5%. Two different parameterizations for the turbulent statistics were used, with both giving similar R2 values, 0.65 and 0.63 for the Raupach and Leuning parameterizations, with the Raupach version performing slightly better. The stable isotope method demonstrated itself to be a more robust method, returning larger amounts of useable data, however this is limited by the requirement of much more additional data.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public