Moisture origin and stable isotope characteristics of precipitation in southeast Siberia
Indexación: Scopus. The paper presents oxygen and hydrogen isotopes of 284 precipitation event samples systematically collected in Irkutsk, in the Baikal region (southeast Siberia), between June 2011 and April 2017. This is the first high-resolution dataset of stable isotopes of precipitation from t...
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Online Access: | http://repositorio.unab.cl/xmlui/handle/ria/20503 https://doi.org/10.1002/hyp.13571 |
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ftunivabello:oai:repositorio.unab.cl:ria/20503 2023-05-15T15:15:38+02:00 Moisture origin and stable isotope characteristics of precipitation in southeast Siberia Kostrova, S. Meyer, H. Fernandoy, F. Werner, M. Tarasov, P. 2020 application/pdf http://repositorio.unab.cl/xmlui/handle/ria/20503 https://doi.org/10.1002/hyp.13571 en eng John Wiley and Sons Ltd Hydrological Processes, Volume 34, Issue 1, Pages 51 - 671, January 2020 0885-6087 http://repositorio.unab.cl/xmlui/handle/ria/20503 doi:10.1002/hyp.13571 Attribution 4.0 International (CC BY 4.0) CC-BY atmospheric circulation Baikal region d excess ECHAM5-wiso climate model HYSPLIT model stable oxygen and hydrogen isotopes of precipitation Article 2020 ftunivabello https://doi.org/10.1002/hyp.13571 2022-12-27T16:54:48Z Indexación: Scopus. The paper presents oxygen and hydrogen isotopes of 284 precipitation event samples systematically collected in Irkutsk, in the Baikal region (southeast Siberia), between June 2011 and April 2017. This is the first high-resolution dataset of stable isotopes of precipitation from this poorly studied region of continental Asia, which has a high potential for isotope-based palaeoclimate research. The dataset revealed distinct seasonal variations: relatively high δ18O (up to −4‰) and δD (up to −40‰) values characterize summer air masses, and lighter isotope composition (−41‰ for δ18O and −322‰ for δD) is characteristic of winter precipitation. Our results show that air temperature mainly affects the isotope composition of precipitation, and no significant correlations were obtained for precipitation amount and relative humidity. A new temperature dependence was established for weighted mean monthly precipitation: +0.50‰/°C (r2 = 0.83; p <.01; n = 55) for δ18O and +3.8‰/°C (r2 = 0.83, p < 0.01; n = 55) for δD. Secondary fractionation processes (e.g., contribution of recycled moisture) were identified mainly in summer from low d excess. Backward trajectories assessed with the Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model indicate that precipitation with the lowest mean δ18O and δD values reaches Irkutsk in winter related to moisture transport from the Arctic. Precipitation originating from the west/southwest with the heaviest mean isotope composition reaches Irkutsk in summer, thus representing moisture transport across Eurasia. Generally, moisture transport from the west, that is, the Atlantic Ocean predominates throughout the year. A comparison of our new isotope dataset with simulation results using the European Centre/Hamburg version 5 (ECHAM5)-wiso climate model reveals a good agreement of variations in δ18O (r2 = 0.87; p <.01; n = 55) and air temperature (r2 = 0.99; p <.01; n = 71). However, the ECHAM5-wiso model fails to capture observed variations in d ... Article in Journal/Newspaper Arctic Siberia Universidad Andrés Bello: Repositorio Institucional Académico Arctic Hydrological Processes 34 1 51 67 |
institution |
Open Polar |
collection |
Universidad Andrés Bello: Repositorio Institucional Académico |
op_collection_id |
ftunivabello |
language |
English |
topic |
atmospheric circulation Baikal region d excess ECHAM5-wiso climate model HYSPLIT model stable oxygen and hydrogen isotopes of precipitation |
spellingShingle |
atmospheric circulation Baikal region d excess ECHAM5-wiso climate model HYSPLIT model stable oxygen and hydrogen isotopes of precipitation Kostrova, S. Meyer, H. Fernandoy, F. Werner, M. Tarasov, P. Moisture origin and stable isotope characteristics of precipitation in southeast Siberia |
topic_facet |
atmospheric circulation Baikal region d excess ECHAM5-wiso climate model HYSPLIT model stable oxygen and hydrogen isotopes of precipitation |
description |
Indexación: Scopus. The paper presents oxygen and hydrogen isotopes of 284 precipitation event samples systematically collected in Irkutsk, in the Baikal region (southeast Siberia), between June 2011 and April 2017. This is the first high-resolution dataset of stable isotopes of precipitation from this poorly studied region of continental Asia, which has a high potential for isotope-based palaeoclimate research. The dataset revealed distinct seasonal variations: relatively high δ18O (up to −4‰) and δD (up to −40‰) values characterize summer air masses, and lighter isotope composition (−41‰ for δ18O and −322‰ for δD) is characteristic of winter precipitation. Our results show that air temperature mainly affects the isotope composition of precipitation, and no significant correlations were obtained for precipitation amount and relative humidity. A new temperature dependence was established for weighted mean monthly precipitation: +0.50‰/°C (r2 = 0.83; p <.01; n = 55) for δ18O and +3.8‰/°C (r2 = 0.83, p < 0.01; n = 55) for δD. Secondary fractionation processes (e.g., contribution of recycled moisture) were identified mainly in summer from low d excess. Backward trajectories assessed with the Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model indicate that precipitation with the lowest mean δ18O and δD values reaches Irkutsk in winter related to moisture transport from the Arctic. Precipitation originating from the west/southwest with the heaviest mean isotope composition reaches Irkutsk in summer, thus representing moisture transport across Eurasia. Generally, moisture transport from the west, that is, the Atlantic Ocean predominates throughout the year. A comparison of our new isotope dataset with simulation results using the European Centre/Hamburg version 5 (ECHAM5)-wiso climate model reveals a good agreement of variations in δ18O (r2 = 0.87; p <.01; n = 55) and air temperature (r2 = 0.99; p <.01; n = 71). However, the ECHAM5-wiso model fails to capture observed variations in d ... |
format |
Article in Journal/Newspaper |
author |
Kostrova, S. Meyer, H. Fernandoy, F. Werner, M. Tarasov, P. |
author_facet |
Kostrova, S. Meyer, H. Fernandoy, F. Werner, M. Tarasov, P. |
author_sort |
Kostrova, S. |
title |
Moisture origin and stable isotope characteristics of precipitation in southeast Siberia |
title_short |
Moisture origin and stable isotope characteristics of precipitation in southeast Siberia |
title_full |
Moisture origin and stable isotope characteristics of precipitation in southeast Siberia |
title_fullStr |
Moisture origin and stable isotope characteristics of precipitation in southeast Siberia |
title_full_unstemmed |
Moisture origin and stable isotope characteristics of precipitation in southeast Siberia |
title_sort |
moisture origin and stable isotope characteristics of precipitation in southeast siberia |
publisher |
John Wiley and Sons Ltd |
publishDate |
2020 |
url |
http://repositorio.unab.cl/xmlui/handle/ria/20503 https://doi.org/10.1002/hyp.13571 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Siberia |
genre_facet |
Arctic Siberia |
op_relation |
Hydrological Processes, Volume 34, Issue 1, Pages 51 - 671, January 2020 0885-6087 http://repositorio.unab.cl/xmlui/handle/ria/20503 doi:10.1002/hyp.13571 |
op_rights |
Attribution 4.0 International (CC BY 4.0) |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/hyp.13571 |
container_title |
Hydrological Processes |
container_volume |
34 |
container_issue |
1 |
container_start_page |
51 |
op_container_end_page |
67 |
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1766345990350045184 |