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001-es BibID:	BIBFORM068915
Első szerző:	Czellér Krisztina (geográfus)
Cím:	Elaboration of the methodology of dew measurement by means of weighing lysimeters / Krisztina Czellér, Lúcia Sinka, Géza Tuba, József Zsembeli
Dátum:	2017
Megjegyzések:	Records of the frequency of occurrence of or the total amounts of dew are scarce. The lack of such records can undoubtedly be attributed to the difficulty of making quantitative measurements of dew. Within some limitations large precision weighing lysimeters can be suitable for the accurate determination of dew amounts. The lysimeter data completed with meteorological data provide the possibility to identify such periods with positive water balance when no rainfall occurred hence dew formation is probable. Nevertheless some "data noises" (oscillations) are characteristic to weighing lysimeter data gained with a high frequency for a longer period. These oscillations can be easily mixed up with the weight increase due to dew formation, therefore filtering or smoothing functions must be used to separate them. Our research aimed to elaborate a method that is suitable to separate true dewfall periods from oscillations and to quantify the amount of dew occurred on the surface of 2 weighing lysimeters of Karcag Research Institute of RISF UD for a longer period. The method we applied for filtering was the application of weight data measured with 1 hour frequency instead of 10 minutes frequency. The investigation period lasted from 1/4/2015 to 30/9/2016. Two high precision weighing lysimeters were involved, one with bare soil surface and one with grass cover. 43.11 and 49.35 mm dew was calculated for the grass covered and the bare surface lysimeters for the total 18-month-long investigation period with the application of our method.
Tárgyszavak:	Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény hazai lapban dew data filtering weighing lysimeter
Megjelenés:	Columella 4 : 1 (2017), p. 187-192. -
További szerzők:	Sinka Lúcia (1993-) (környezetgazdálkodási agrármérnök) Tuba Géza (1973-) (agrármérnök, környezetgazdálkodási szakmérnők) Zsembeli József (1967-) (agrármérnök)
Pályázati támogatás:	Osztrák-Magyar Akció Alapítvány: project nr. 92öu2 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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