Datum
2022-12-01Schlagwort
540 Chemie 570 Biowissenschaften, Biologie DeutschlandKasselDeuteriumSauerstoffWasserstoffisotopNordhessenGebirgeMetadata
Zur Langanzeige
Aufsatz
Spatial and Temporal Variations of Stable Isotopes in Precipitation in the Mountainous Region, North Hesse
Zusammenfassung
Patterns of stable isotopes of water (¹⁸O and ²H) in precipitation have been used as tracers for analyzing environmental processes which can be changed by factors such as the topography or meteorological variables. In this study, we investigated the isotopic data in precipitation for one year in the low mountain range of North Hesse, Germany, and analyzed mainly for altitude, rainfall amount, and air temperature effects on a regional scale. The results indicate that the isotopic composition expressed an altitude effect with a gradient of −0.14‰/100 m for δ¹⁸O, −0.28‰/100 m for δ²H and 0.83‰/100 m for Deuterium excess. Patterns of enrichment during warmer months and depletion during colder months were detected. Seasonal correlations were not consistent because the altitude effect was superimposed by other processes such as amount and temperature effects, vapor origins, orographic rainout processes, moisture recycling, and sub-cloud secondary evaporation. Precipitation was mostly affected by secondary evaporation and mixing processes during the summer while depleted moisture-bearing fronts and condensation were more responsible for isotope depletion during winter. In autumn and spring, the amount effect was more prominent in combination with moisture recycling, and large-scale convective processes. The altitude effect was also detected in surface water. The investigated elevation transect with multiple stations provided unique insights into hydrological and climatic processes of North Hesse on a regional scale. The spatial heterogeneity and mixing of different processes suggest that multiple rainfall stations are required when rainfall isotopes serve as forcing data for hydrological applications such as transit time assessments in complex terrains.
Zitierform
In: Water Volume 14 / Issue 23 (2022-12-01) eissn:2073-4441Förderhinweis
Gefördert durch den Publikationsfonds der Universität KasselZitieren
@article{doi:10.17170/kobra-202301187398,
author={Mahindawansha, Amani and Jost, Marius and Gassmann, Matthias},
title={Spatial and Temporal Variations of Stable Isotopes in Precipitation in the Mountainous Region, North Hesse},
journal={Water},
year={2022}
}
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2023-01-18T14:50:10Z 2023-01-18T14:50:10Z 2022-12-01 doi:10.17170/kobra-202301187398 http://hdl.handle.net/123456789/14372 Gefördert durch den Publikationsfonds der Universität Kassel eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ Oxygen Hydrogen Deuterium excess Amount effect Temperature effect Altitude effect Kassel Germany 540 570 Spatial and Temporal Variations of Stable Isotopes in Precipitation in the Mountainous Region, North Hesse Aufsatz Patterns of stable isotopes of water (¹⁸O and ²H) in precipitation have been used as tracers for analyzing environmental processes which can be changed by factors such as the topography or meteorological variables. In this study, we investigated the isotopic data in precipitation for one year in the low mountain range of North Hesse, Germany, and analyzed mainly for altitude, rainfall amount, and air temperature effects on a regional scale. The results indicate that the isotopic composition expressed an altitude effect with a gradient of −0.14‰/100 m for δ¹⁸O, −0.28‰/100 m for δ²H and 0.83‰/100 m for Deuterium excess. Patterns of enrichment during warmer months and depletion during colder months were detected. Seasonal correlations were not consistent because the altitude effect was superimposed by other processes such as amount and temperature effects, vapor origins, orographic rainout processes, moisture recycling, and sub-cloud secondary evaporation. Precipitation was mostly affected by secondary evaporation and mixing processes during the summer while depleted moisture-bearing fronts and condensation were more responsible for isotope depletion during winter. In autumn and spring, the amount effect was more prominent in combination with moisture recycling, and large-scale convective processes. The altitude effect was also detected in surface water. The investigated elevation transect with multiple stations provided unique insights into hydrological and climatic processes of North Hesse on a regional scale. The spatial heterogeneity and mixing of different processes suggest that multiple rainfall stations are required when rainfall isotopes serve as forcing data for hydrological applications such as transit time assessments in complex terrains. open access Mahindawansha, Amani Jost, Marius Gassmann, Matthias doi:10.3390/w14233910 Deutschland Kassel Deuterium Sauerstoff Wasserstoffisotop Nordhessen Gebirge publishedVersion eissn:2073-4441 Issue 23 Water Volume 14 false 3910
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