Measurement report: Spatial variability of northern Iberian rainfall stable isotope values – investigating atmospheric controls on daily and monthly timescales
For the first time, this article presents a large dataset of precipitation isotopic measurements ( δ 18 O p and δ 2 H p ) sampled every day or 2 d from seven sites on a west-to-east transect across northern Spain for 2010–2017. The main aim of this study is to (1) characterize the rainfall isotopic...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2021
|
Subjects: | |
Online Access: | https://doi.org/10.5194/acp-21-10159-2021 https://doaj.org/article/a495876e7eda4c2796259fe160a76dd0 |
id |
ftdoajarticles:oai:doaj.org/article:a495876e7eda4c2796259fe160a76dd0 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:a495876e7eda4c2796259fe160a76dd0 2023-05-15T17:35:13+02:00 Measurement report: Spatial variability of northern Iberian rainfall stable isotope values – investigating atmospheric controls on daily and monthly timescales A. Moreno M. Iglesias C. Azorin-Molina C. Pérez-Mejías M. Bartolomé C. Sancho H. Stoll I. Cacho J. Frigola C. Osácar A. Muñoz A. Delgado-Huertas I. Bladé F. Vimeux 2021-07-01T00:00:00Z https://doi.org/10.5194/acp-21-10159-2021 https://doaj.org/article/a495876e7eda4c2796259fe160a76dd0 EN eng Copernicus Publications https://acp.copernicus.org/articles/21/10159/2021/acp-21-10159-2021.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-21-10159-2021 1680-7316 1680-7324 https://doaj.org/article/a495876e7eda4c2796259fe160a76dd0 Atmospheric Chemistry and Physics, Vol 21, Pp 10159-10177 (2021) Physics QC1-999 Chemistry QD1-999 article 2021 ftdoajarticles https://doi.org/10.5194/acp-21-10159-2021 2022-12-31T12:40:51Z For the first time, this article presents a large dataset of precipitation isotopic measurements ( δ 18 O p and δ 2 H p ) sampled every day or 2 d from seven sites on a west-to-east transect across northern Spain for 2010–2017. The main aim of this study is to (1) characterize the rainfall isotopic variability in northern Spain at daily and monthly timescales and (2) assess the principal factors influencing rainfall isotopic variability. The relative role of air temperature and rainfall in determining the stable isotope composition of precipitation changes along the west-to-east transect, with air temperature being highly correlated with δ 18 O p at daily and monthly timescales, while a few sites along the transect show a significant negative correlation with precipitation. The highest air temperature– δ 18 O p dependency is found for a station located in the Pyrenees. Frontal systems associated with North Atlantic cyclones are the dominant mechanism inducing precipitation in this region, particularly in winter. This study allows an exploration of the role of air mass source and trajectory in determining the isotopic composition of rainfall in northern Iberia by characterizing the moisture uptake for three of the seven stations. The importance of continental versus marine moisture sources is evident, with clear seasonal and spatial variations. In addition, the type of precipitation (convective versus frontal rainfall) plays a key role, with convective rainfall associated with higher δ 18 O p values. This comprehensive spatiotemporal approach to analyzing the rainfall isotopic composition represents another step forward towards developing a more detailed, mechanistic framework for interpreting stable isotopes in rainfall as a paleoclimate and hydrological tracer. Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Atmospheric Chemistry and Physics 21 13 10159 10177 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 A. Moreno M. Iglesias C. Azorin-Molina C. Pérez-Mejías M. Bartolomé C. Sancho H. Stoll I. Cacho J. Frigola C. Osácar A. Muñoz A. Delgado-Huertas I. Bladé F. Vimeux Measurement report: Spatial variability of northern Iberian rainfall stable isotope values – investigating atmospheric controls on daily and monthly timescales |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
For the first time, this article presents a large dataset of precipitation isotopic measurements ( δ 18 O p and δ 2 H p ) sampled every day or 2 d from seven sites on a west-to-east transect across northern Spain for 2010–2017. The main aim of this study is to (1) characterize the rainfall isotopic variability in northern Spain at daily and monthly timescales and (2) assess the principal factors influencing rainfall isotopic variability. The relative role of air temperature and rainfall in determining the stable isotope composition of precipitation changes along the west-to-east transect, with air temperature being highly correlated with δ 18 O p at daily and monthly timescales, while a few sites along the transect show a significant negative correlation with precipitation. The highest air temperature– δ 18 O p dependency is found for a station located in the Pyrenees. Frontal systems associated with North Atlantic cyclones are the dominant mechanism inducing precipitation in this region, particularly in winter. This study allows an exploration of the role of air mass source and trajectory in determining the isotopic composition of rainfall in northern Iberia by characterizing the moisture uptake for three of the seven stations. The importance of continental versus marine moisture sources is evident, with clear seasonal and spatial variations. In addition, the type of precipitation (convective versus frontal rainfall) plays a key role, with convective rainfall associated with higher δ 18 O p values. This comprehensive spatiotemporal approach to analyzing the rainfall isotopic composition represents another step forward towards developing a more detailed, mechanistic framework for interpreting stable isotopes in rainfall as a paleoclimate and hydrological tracer. |
format |
Article in Journal/Newspaper |
author |
A. Moreno M. Iglesias C. Azorin-Molina C. Pérez-Mejías M. Bartolomé C. Sancho H. Stoll I. Cacho J. Frigola C. Osácar A. Muñoz A. Delgado-Huertas I. Bladé F. Vimeux |
author_facet |
A. Moreno M. Iglesias C. Azorin-Molina C. Pérez-Mejías M. Bartolomé C. Sancho H. Stoll I. Cacho J. Frigola C. Osácar A. Muñoz A. Delgado-Huertas I. Bladé F. Vimeux |
author_sort |
A. Moreno |
title |
Measurement report: Spatial variability of northern Iberian rainfall stable isotope values – investigating atmospheric controls on daily and monthly timescales |
title_short |
Measurement report: Spatial variability of northern Iberian rainfall stable isotope values – investigating atmospheric controls on daily and monthly timescales |
title_full |
Measurement report: Spatial variability of northern Iberian rainfall stable isotope values – investigating atmospheric controls on daily and monthly timescales |
title_fullStr |
Measurement report: Spatial variability of northern Iberian rainfall stable isotope values – investigating atmospheric controls on daily and monthly timescales |
title_full_unstemmed |
Measurement report: Spatial variability of northern Iberian rainfall stable isotope values – investigating atmospheric controls on daily and monthly timescales |
title_sort |
measurement report: spatial variability of northern iberian rainfall stable isotope values – investigating atmospheric controls on daily and monthly timescales |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/acp-21-10159-2021 https://doaj.org/article/a495876e7eda4c2796259fe160a76dd0 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Atmospheric Chemistry and Physics, Vol 21, Pp 10159-10177 (2021) |
op_relation |
https://acp.copernicus.org/articles/21/10159/2021/acp-21-10159-2021.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-21-10159-2021 1680-7316 1680-7324 https://doaj.org/article/a495876e7eda4c2796259fe160a76dd0 |
op_doi |
https://doi.org/10.5194/acp-21-10159-2021 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
21 |
container_issue |
13 |
container_start_page |
10159 |
op_container_end_page |
10177 |
_version_ |
1766134297906905088 |