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Authors: Jódar, J. 
Custodio, E. 
Liotta, M. 
Lambán, L. J. 
Herrera, C. 
Martos-Rosillo, S. 
Sapriza, G. 
Rigo, T. 
Title: Correlation of the seasonal isotopic amplitude of precipitation with annual evaporation and altitude in alpine regions
Issue Date: 2016
Series/Report no.: /550 (2016)
DOI: 10.1016/j.scitotenv.2015.12.034
Keywords: Seasonal isotopic amplitude
Subject Classification01. Atmosphere::01.01. Atmosphere::01.01.01. Composition and Structure 
Abstract: Abstract The time series of stable water isotope composition relative to IAEA-GNIP meteorological stations located in alpine zones are analyzed in order to study how the amplitude of the seasonal isotopic composition of precipitation (Aδ) varies along a vertical transect. A clear relationship between Aδ and local evaporation is obtained, with slopes of â 0.87 â °/100 mm/yr and â 7.3 â °/100 mm/yr for Aδ18O and Aδ2H, respectively. When all sampling points of the vertical transect receive the same moisture sources, then a linear relationship between Aδ and elevation is obtained, with vertical gradients of 0.16 â °/100 mm/yr and 1.46 â °/100 mm/yr for Aδ18O and Aδ2H, respectively.
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