Derivation of regression equations for calculation of evaporation from a free water surface and identification of trends in measured variables in Hlasivo station

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00020711%3A_____%2F18%3A00004645" target="_blank" >RIV/00020711:_____/18:00004645 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Derivation of regression equations for calculation of evaporation from a free water surface and identification of trends in measured variables in Hlasivo station

Popis výsledku v původním jazyce

Evaporation from a free water surface is one of the important factors affecting the total water balance of a catchment. Due to the complicated direct measurements methods, evaporation is calculated from meteorological variables based formulas. Contribution evaluates data of evaporation, air temperature, relative air humidity and precipitation from Hlasivo station from seasons from May to October of 1957 to 2017. Hlasivo station in the Czech Republic near Tábor city was built in 1957. It has sixty-one old history of evaporation measuring for purposes of TGM Water Research Institute, p.r.i. Over the years, it was started with a systematic monitoring of evaporation as a component of the hydrological balance. Hlasivo station is only the one station in the Czech Republic where evaporation measurement is not cancelled. In the first part, statistical analyses of evaporation, air temperature, relative air humidity and precipitation are described. Significant upward trend was identified only in the evaporation values. Second part of the contribution describes the derivation of equations for calculating of evaporation based on meteorological variables regression. The evaporation was modelled with newly derived relationships and the results were compared. The best results were obtained using the formula based on the water temperature (air temperature) and wind speed.

Název v anglickém jazyce

Derivation of regression equations for calculation of evaporation from a free water surface and identification of trends in measured variables in Hlasivo station

Popis výsledku anglicky

Evaporation from a free water surface is one of the important factors affecting the total water balance of a catchment. Due to the complicated direct measurements methods, evaporation is calculated from meteorological variables based formulas. Contribution evaluates data of evaporation, air temperature, relative air humidity and precipitation from Hlasivo station from seasons from May to October of 1957 to 2017. Hlasivo station in the Czech Republic near Tábor city was built in 1957. It has sixty-one old history of evaporation measuring for purposes of TGM Water Research Institute, p.r.i. Over the years, it was started with a systematic monitoring of evaporation as a component of the hydrological balance. Hlasivo station is only the one station in the Czech Republic where evaporation measurement is not cancelled. In the first part, statistical analyses of evaporation, air temperature, relative air humidity and precipitation are described. Significant upward trend was identified only in the evaporation values. Second part of the contribution describes the derivation of equations for calculating of evaporation based on meteorological variables regression. The evaporation was modelled with newly derived relationships and the results were compared. The best results were obtained using the formula based on the water temperature (air temperature) and wind speed.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10500 - Earth and related environmental sciences

Projekt

<a href="/cs/project/TJ01000196" target="_blank" >TJ01000196: Vytvoření software pro výpočet výparu z vodní hladiny pro podmínky ČR</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

17th Biennial Conference ERB2018, Innovative monitoring techniques and modelling approaches for analysing hydrological processes in small basins, Darmstadt / Germany, September 11 - 14, 2018, Book of aBSTRACTS

ISBN

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ISSN

neni

e-ISSN

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Počet stran výsledku

1

Strana od-do

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Název nakladatele

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Místo vydání

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Místo konání akce

Darmstadt, Germany

Datum konání akce

11. 9. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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