Moisture source diagnostics and isotope characteristics for precipitation in east Hungary: implications for their relationship

Emese Bottyán, György Czuppon, T. Weidinger, L. Haszpra, Krisztina Kármán

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Knowledge relating to the relationship between the characteristics of precipitation and sources of moisture is essential to improve our understanding of the global water cycle. This study presents the first quantitative estimation of the moisture source regions combined with stable isotope analyses for precipitation at K-puszta, east Hungary. The contributions of the following moisture sources were diagnosed according to the sector analysis of 4-day backward trajectories together with the calculation of evaporation and precipitation fluxes based on the specific humidity: Mediterranean region (57.0%), local moisture (14.8%), Atlantic region (14.2%), Northern Europe (7.4%) and Eastern Europe (6.6%). The δD and δ18O values of daily precipitation were measured and the deuterium excess (d-excess) was calculated. The d-excess showed systematic differences among the marine sources, reflecting the characteristics of the moisture source area. The results suggest that the stable isotope composition of precipitation preserves information regarding the origin of the water vapour.

Original languageEnglish
Pages (from-to)2049-2060
Number of pages12
JournalHydrological Sciences Journal
Volume62
Issue number12
DOIs
Publication statusPublished - Sep 10 2017

Fingerprint

moisture
isotope
deuterium
stable isotope
water vapor
humidity
evaporation
trajectory
water

Keywords

  • moisture source diagnostics
  • precipitation
  • stable isotope
  • trajectory

ASJC Scopus subject areas

  • Water Science and Technology

Cite this

Moisture source diagnostics and isotope characteristics for precipitation in east Hungary : implications for their relationship. / Bottyán, Emese; Czuppon, György; Weidinger, T.; Haszpra, L.; Kármán, Krisztina.

In: Hydrological Sciences Journal, Vol. 62, No. 12, 10.09.2017, p. 2049-2060.

Research output: Contribution to journalArticle

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AB - Knowledge relating to the relationship between the characteristics of precipitation and sources of moisture is essential to improve our understanding of the global water cycle. This study presents the first quantitative estimation of the moisture source regions combined with stable isotope analyses for precipitation at K-puszta, east Hungary. The contributions of the following moisture sources were diagnosed according to the sector analysis of 4-day backward trajectories together with the calculation of evaporation and precipitation fluxes based on the specific humidity: Mediterranean region (57.0%), local moisture (14.8%), Atlantic region (14.2%), Northern Europe (7.4%) and Eastern Europe (6.6%). The δD and δ18O values of daily precipitation were measured and the deuterium excess (d-excess) was calculated. The d-excess showed systematic differences among the marine sources, reflecting the characteristics of the moisture source area. The results suggest that the stable isotope composition of precipitation preserves information regarding the origin of the water vapour.

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