Počet záznamů: 1
The influence of observed and modelled net longwave radiation on the rate of estimated potential evapotranspiration
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SYSNO ASEP 0500537 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The influence of observed and modelled net longwave radiation on the rate of estimated potential evapotranspiration Tvůrce(i) Kofroňová, Jitka (UH-J) ORCID, RID, SAI
Tesař, Miroslav (UH-J) ORCID, SAI, RID
Šípek, Václav (UH-J) SAI, ORCID, RIDZdroj.dok. Journal of Hydrology and Hydromechanics. - : Ústav pro hydromechaniku AV ČR, v. v. i.. - : Ústav hydrológie SAV - ISSN 0042-790X
Roč. 67, č. 3 (2019), s. 280-288Poč.str. 9 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. SK - Slovensko Klíč. slova radiation balance ; longwave radiation ; potential evapotranspiration ; Penman-Monteith ; calibration Vědní obor RIV DA - Hydrologie a limnologie Obor OECD Hydrology CEP GA16-05665S GA ČR - Grantová agentura ČR Způsob publikování Open access Institucionální podpora UH-J - RVO:67985874 UT WOS 000473006300009 EID SCOPUS 85068317902 DOI 10.2478/johh-2019-0011 Anotace Longwave radiation, as part of the radiation balance, is one of the factors needed to estimate potential evapotranspiration (PET). Since the longwave radiation balance is rarely measured, many computational methods have been designed. In this study, we report on the difference between the observed longwave radiation balance and modelling results obtained using the two main procedures outlined in FAO24 (relying on the measured sunshine duration) and FAO56 (based on the measured solar radiation) manuals. The performance of these equations was evaluated in the April-October period over eight years at the Liz experimental catchment and grass surface in the Bohemian Forest (Czech Republic). The coefficients of both methods, which describe the influence of cloudiness factor and atmospheric emissivity of the air, were calibrated. The Penman-Monteith method was used to calculate the PET. The use of default coefficient values gave errors of 40-100 mm (FAO56) and 0-20 mm (FAO24) for the seasonal PET estimates (the PET was usually overestimated). Parameter calibration decreased the FAO56 error to less than 20 mm per season (FAO24 remained unaffected by the calibration). The FAO56 approach with calibrated coefficients proved to be more suitable for estimation of the longwave radiation balance. Pracoviště Ústav pro hydrodynamiku Kontakt Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Rok sběru 2020 Elektronická adresa http://hdl.handle.net/11104/0297522
Počet záznamů: 1