Factors controlling variation of δ2H and δ18O in precipitation in Southern Bohemia, Central Europe

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F25%3A00646971" target="_blank" >RIV/60077344:_____/25:00646971 - isvavai.cz</a>

Alternative codes found

RIV/60076658:12310/25:43909884

Result on the web

<a href="https://doi.org/10.1016/j.atmosenv.2025.121101" target="_blank" >https://doi.org/10.1016/j.atmosenv.2025.121101</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.atmosenv.2025.121101" target="_blank" >10.1016/j.atmosenv.2025.121101</a>

Result language

angličtina

Original language name

Factors controlling variation of δ2H and δ18O in precipitation in Southern Bohemia, Central Europe

Original language description

The effects of local climate parameters, seasonality and sources of air masses on the stable water isotopes [hydrogen (delta H-2) and oxygen (delta O-18)] in precipitation were investigated along an altitudinal gradient (381-1118 m a.s.l.) in southern Bohemia, Central Europe, from December 2021 to November 2023. The relationship between the observed delta H-2 and delta O-18 values was consistent with the Global Meteoric Water Line. The isotopic composition of precipitation changed with increasing altitude by6.5 and1.2 parts per thousand km(-1) for delta H-2 and delta O-18, respectively. The delta values differed between seasons, with the values being most enriched in summer and most depleted in winter. An analysis of the air mass trajectories using the Hybrid Single-Particle Lagrangian Integrated Trajectory Model showed that the main sources of precipitation were the North Atlantic (from 44% in spring to 70% in fall and winter), the Arctic Ocean (from 15% in summer to 38% in spring) and the Mediterranean Sea (from 12% in winter to 34% in summer). Throughout the study period, average delta values differed significantly between air masses (p < 0.05) and along the altitudinal gradient, with the most enriched values (from56 to37 parts per thousand for delta H-2 and from8.2 to5.5 parts per thousand for delta O-18) and the most depleted values (from91 to84 parts per thousand for delta H-2 and from12.7 to12.0 parts per thousand for delta O-18) occurring in the Mediterranean and Arctic air masses, respectively. However, for individual daily samples, strong correlations occurred between the delta values and air temperature (the strongest), humidity, precipitation, time of sunshine and solar radiation, while the influence of air mass directions was not significant. A stepwise regression analysis showed that most of the variation in daily delta values (43-48% and 47-52% of delta H-2 and delta O-18, respectively) was explained by the combination of air temperature and humidity, precipitation amount, and season.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10509 - Meteorology and atmospheric sciences

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Atmospheric Environment

ISSN

1352-2310

e-ISSN

1873-2844

Volume of the periodical

347

Issue of the periodical within the volume

Feb

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

121101

UT code for WoS article

001428982500001

EID of the result in the Scopus database

2-s2.0-85217913486