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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/60076658:12310/25:43909884

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10509 - Meteorology and atmospheric sciences

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Atmospheric Environment

ISSN

1352-2310

e-ISSN

1873-2844

Svazek periodika

347

Číslo periodika v rámci svazku

Feb

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

121101

Kód UT WoS článku

001428982500001

EID výsledku v databázi Scopus

2-s2.0-85217913486