Vapour source and spatiotemporal variation of precipitation isotopes in Southwest Spain
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00020711%3A_____%2F21%3A10154655" target="_blank" >RIV/00020711:_____/21:10154655 - isvavai.cz</a>
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/abs/10.1002/hyp.14445" target="_blank" >https://onlinelibrary.wiley.com/doi/abs/10.1002/hyp.14445</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/hyp.14445" target="_blank" >10.1002/hyp.14445</a>
Alternative languages
Result language
angličtina
Original language name
Vapour source and spatiotemporal variation of precipitation isotopes in Southwest Spain
Original language description
The δ2H and δ18O composition of 77 precipitation samples collected between January 2014 and April 2019 from two sites across the Guadalquivir Basin, SW Spain, were analysed. The first site is located in an urban area of Seville at 100 km distance to the Atlantic coast and the second site is located in a dune area of the Doñana National Park a few kilometres from the coast. Sampling was performed within intervals of at least 14 days if rain occurred but frequently intervals were longer according to the rainfall incidence. Samples from both sites are available for the period February 2016 to June 2018 with six samples containing identical rain events at both locations. Precipitation weighted averages and local meteoric water lines produced by weighting and non-weighting regression methods are presented for its use in hydrological applications. Results show a remarkably high variability in δ2H and δ18O values and precipitation weighted average d-excess values of 11.8%oand 13%o at the sites Plaza de España and Doñana, respectively. Temperature and amount effects were found to be weak. A significant influence of secondary evaporation for single rainfall events during summer was identified by enriched isotopic signatures with reduced d-excess values plotting close or below the global meteoric water line. Backward trajectory analysis of 115 days with daily rainfall above 3 mm yield a predominant Atlantic Ocean vapour source with negligible Mediterranean influence and therefore, d-excess variability is attributed to the different ocean surface conditions of relative humidity and sea surface temperature. Parallel sampling indicate very similar isotopic signatures at both sites and point to the existence of thermal effects of the Plaza de España site in Seville city during the summer season.
Czech name
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Czech description
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Classification
Type
J<sub>ost</sub> - Miscellaneous article in a specialist periodical
CEP classification
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OECD FORD branch
10510 - Climatic research
Result continuities
Project
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Continuities
O - Projekt operacniho programu
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
HYDROLOGICAL PROCESSES
ISSN
0885-6087
e-ISSN
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Volume of the periodical
35
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
14
Pages from-to
1-14
UT code for WoS article
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EID of the result in the Scopus database
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