Gridded data set of the stable isotopic composition of precipitation over the eastern and central Mediterranean

Lykoudis, S.; Argiriou, Athanassios A.

doi:10.1029/2007jd008472

Cited by 55 publications

(43 citation statements)

References 38 publications

(50 reference statements)

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“…These values represent approximately 6% and 9% of the total range of observed values, and are much smaller than the uncertainties typically associated with global water d 2 H models (Bowen and Revenaugh 2003). This result is consistent with other studies that have shown that region-specific models can provide enhanced water isotope prediction accuracy compared to global analyses (Hobson et al 2004, Dutton et al 2005, Lykoudis and Argiriou 2007, Lechler and Niemi 2011. Our prediction map depicts strong, dominantly meridional, …”

Section: Spatial Analysissupporting

confidence: 80%

Footprint of recycled water subsidies downwind of Lake Michigan

et al. 2012

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Abstract. Continental evaporation is a significant and dynamic flux within the atmospheric water budget, but few methods provide robust observational constraints on the large-scale hydroclimatological and hydroecological impacts of this 'recycled-water' flux. We demonstrate a geospatial analysis that provides such information, using stable isotope data to map the distribution of recycled water in shallow aquifers downwind from Lake Michigan. The d 2 H and d 18O values of groundwater in the study region decrease from south to north, as expected based on meridional gradients in climate and precipitation isotope ratios. In contrast, deuterium excessO) values exhibit a significant zonal gradient and finer-scale spatially patterned variation. Local d maxima occur in the northwest and southwest corners of the Lower Peninsula of Michigan, where 'lake-effect' precipitation events are abundant. We apply a published model that describes the effect of recycling from lakes on atmospheric vapor d values to estimate that up to 32% of recharge into individual aquifers may be derived from recycled Lake Michigan water. Applying the model to geostatistical surfaces representing mean d values, we estimate that between 10% and 18% of the vapor evaporated from Lake Michigan is re-precipitated within downwind areas of the Lake Michigan drainage basin. Our approach provides previously unavailable observational constraints on regional land-atmosphere water fluxes in the Great Lakes Basin and elucidates patterns in recycled-water fluxes that may influence the biogeography of the region. As new instruments and networks facilitate enhanced spatial monitoring of environmental water isotopes, similar analyses can be widely applied to calibrate and validate water cycle models and improve projections of regional hydroecological change involving the coupled lake-atmosphere-land system.

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Section: Spatial Analysissupporting

confidence: 80%

Footprint of recycled water subsidies downwind of Lake Michigan

et al. 2012

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“…The oxygen isotope composition of modern freshwater in the UK is relatively well known, with 18 O between -9.0‰ and -4.5‰, with the highest values (>~ -5.0‰) being isolated to the Outer Hebrides and the extreme west coast of Cornwall (Darling and Talbot, 2003;Darling et al, 2003 Lecolle et al, 1985;Longinelli and Selmo, 2003;Lykoudis and Argiriou, 2007). Luz et al 1984;Levinson et al 1987;).…”

Section: Establishing a Uk Oxygen Isotope Rangementioning

confidence: 99%

Strontium and stable isotope evidence for diet and mobility in Roman Gloucester, UK

Chenery

Müldner

Evans

et al. 2010

Journal of Archaeological Science

262

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This paper presents the results of an isotopic investigation of population and dietary diversity in Roman Gloucester, focusing on individuals found in a late 2nd century AD mass burial pit at London Road, and comparing them to those found in the nearby cemetery. There were no statistical differences in isotopic composition between mass grave and cemetery burials, suggesting, in agreement with the osteological evidence, that the mass burial was the result of a catastrophic event, probably an epidemic disease. Strontium and oxygen isotope analysis demonstrated considerable diversity in the origins of the Gloucester population, with evidence for both UK and non-UK individuals. Diet was predominately terrestrial and similar to that of other Romano-British populations. Elevated 13 C dentine ratios in some individuals are correlated with raised 18 O p values and are therefore probably due to childhoods spent in warmer climates, rather than dietary variation. Given the geological complexity of the Gloucester area, this study also provides new biosphere 87 Sr/ 86 Sr data for the wider region. A technical appendix gives details on the analytical methods employed by the NERC Isotope Geoscience Laboratory (NIGL) in the measurement of oxygen stable isotope ratios of biogenic phosphate ( 18 O p ) and evaluates different phosphate oxygen-meteoric water conversion equations using data from Britain.

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“…Statistical or geostatistical models of precipitation isoscapes have been proposed for the globe (Bowen and Wilkinson, 2002;Bowen and Revenaugh, 2003;Terzer et al, 2013), United States (Dutton et al, 2005), Austria (Liebminger et al, 2006a, b), Mediterranean (Lykoudis and Argiriou, 2007), Mongolia , China (Liu et al, 2008), Canada (Delavau et al, 2011), and Ireland (Fischer and Baldini, 2011). These isoscape models are useful in predicting isotope ratios at locations where no measured values are available or in integrating them over a spatial extent (e.g., river basin or smaller catchment).…”

Section: Introductionmentioning

confidence: 99%

“…In statistical models, although this uncertainty is usually evaluated by goodness-of-fit (to calibration data), few studies have validated the models using data independent of model development (Lykoudis and Argiriou, 2007). Geostatistical models do not allow for any estimates of prediction errors because they are optimized to completely fit modeled isotope ratios to observed ones (Bowen, 2010b).…”

Section: Introductionmentioning

confidence: 99%

How reliable are modeled precipitation isoscapes over a high-relief mountainous region?

Yamanaka

Makino

Wakiyama

et al. 2015

Hydrological Research Letters

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Abstract:Precipitation isotope maps over mountains are critical for water resource assessment, yet isoscape modeling has been minimally investigated for complex terrain with high relief. Here we show that multiannual (2011)(2012)(2013)(2014)(2015) mean precipitation isoscapes across the Japanese Alps region can be represented by simple multiple-regression models with strong goodness of fit (R 2 = 0.928 for δ 2 H and 0.944 for δ 18O). Reliability of the models was further confirmed by agreement with previously reported independent data throughout a wider range of elevation (7-3,730 m asl). Modeled precipitation isoscapes were consistent with observations of soil water (20 sites) and river water (50 sites) when considering evaporative enrichment and unclosed water balance. Uncertainties of modeled δ values for precipitation were greater in lowlands near the coast than over the mountains. Unexpectedly, spatially uniform isotopic lapse rates (-11.66‰ km -1 for δ 2 H and -1.724‰ km -1 for δ 18 O), which are divorced from continental effects, gave substantially good approximation on a regional (e.g., a few hundred kilometers) scale. This allows for convenient and reliable modeling of precipitation isoscapes over mountainous regions for hydrological/ecological/interdisciplinary applications.

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Gridded data set of the stable isotopic composition of precipitation over the eastern and central Mediterranean

Cited by 55 publications

References 38 publications

Footprint of recycled water subsidies downwind of Lake Michigan

Footprint of recycled water subsidies downwind of Lake Michigan

Strontium and stable isotope evidence for diet and mobility in Roman Gloucester, UK

How reliable are modeled precipitation isoscapes over a high-relief mountainous region?

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