NDLI: Temporal trends in the stable isotope composition of precipitation: a comparison between the eastern Mediterranean and central Europe

Content Provider	Springer Nature Link
Author	Lykoudis, S. P. Argiriou, A. A.
Copyright Year	2010
Abstract	Stable isotopes in precipitation are recognized as a major tool for tracking the water cycle. The development of gridded datasets is a solution to the need for high-resolution isotopic data. The lack of measurement though, dictates the use of “long-term average” isotopic values, usually, calculated from short time series, of unequal durations and, sometimes, not even referring to the same time period. Thus, the influence of possible trends, that might be present in the isotopic data, should be accounted for. In the present work, we investigated the existence of temporal trends in the isotopic composition of precipitation of central Europe and eastern Mediterranean. Nine stations were selected, having time series extending over at least a 20-year-long period and fulfilling certain data completeness criteria. Possible trends were detected for three overlapping 20-year periods (1961–1980, 1971–1990, and 1981–2000) using linear regression, the Mann–Kendall test, and a partial Mann–Kendall test, to compensate for the influence of meteorological parameters. We found that very few cases present statistically significant trends. There is significant variability of the observed trends, both on a seasonal and on a station basis, in the central Europe and the eastern Mediterranean area alike. Overall, the insignificance of the observed isotopic trends, and the lack of any coherent spatial and temporal patterns, seems to be supporting the current practice for estimating the long-term average isotopic composition of precipitation.
Starting Page	199
Ending Page	207
Page Count	9
File Format	PDF
ISSN	0177798X
Journal	Theoretical and Applied Climatology
Volume Number	105
Issue Number	1-2
e-ISSN	14344483
Language	English
Publisher	Springer Vienna
Publisher Date	2010-12-29
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Climate Change Meteorology/Climatology Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution Atmospheric Protection/Air Quality Control/Air Pollution
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science

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