Isotopic composition
The isotopic composition of precipitation from a winter storm – a case study with the limited-area model COSMO<sub>iso</sub>
... this process, because the melting level is at lower altitudes, rain rates are larger (at least at some locations) and the boundary layer moisture is more depleted. For inves- tigating the effect of rain-vapour ...
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Acorn isotopic composition: a new promising tool for autenticity maps of montado's high-value food products
... acid isotopic composition (by Gas Chromatography-Combustion-Isotope Ratio Mass Spectrometry, GC-C-IRMS) particularly comparing the 13 C/ 12 C ratio of subcutaneous adipose tissue lipids, as it is most ...
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Chemical and stable carbon isotopic composition of PM<sub>2.5</sub> from on-road vehicle emissions in the PRD region and implication for vehicle emission control policy
... Widory, 2006), and it was also less reported for vehicular exhaust emissions (Ancelet et al., 2011; Widory, 2006). The objectives of this study are: (1) to obtain compre- hensive information on the chemical and stable ...
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Coupled isotopes of plant wax and hemicellulose markers record information on relative humidity and isotopic composition of precipitation
... Sachse, D., Billault, I., Bowen, G. J., Chikaraishi, Y., Dawson, T. E., Feakins, S. J., Free- man, K. H., Magill, C. R., McInerney, F. A., van der Meer, M. T. J., Polissar, P., Robins, R. J., Sachs, J. P., Schmidt, ...
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High-resolution measurements of atmospheric molecular hydrogen and its isotopic composition at the West African coast of Mauritania
... The largest source of atmospheric acetaldehyde is thought to be photochemical degradation of volatile organic com- pounds (VOCs), e.g. isoprene (Millet et al., 2010). Both iso- prene and acetaldehyde are emitted from the ...
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Variation in the isotopic composition of striped weakfish Cynoscion guatucupa of the Southwest Atlantic Ocean in response to dietary shifts
... performing isotopic ecology models. We provide mean values of isotopic composition for different size classes of ...the isotopic composition in response to dietary shifts of one of the ...
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Factors Controlling the Stable Nitrogen Isotopic Composition (δ15N) of Lipids in Marine Animals.
... δ 15 N of amino acids was determined, including serine because it is one of the main sources of nitrogen to N-containing lipids. Serine δ 15 N values differed by -7 to +2 ‰ from bulk bio- mass δ 15 N, and correlated well ...
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The isotopic composition of methane in the stratosphere: high-altitude balloon sample measurements
... The polar vortices are seasonal transport barriers that are not included in these general global transport schemes. The radiative cooling in the polar night and the stronger down- ward forcing from the BDC in winter ...
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Modelling and interpreting the isotopic composition of water vapour in convective updrafts
... The isotopic compositions of water vapour and its condensates have long been used as tracers of the global hydrological cycle, but may also be useful for understand- ing processes within individual convective ...
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Chemical characterization and stable carbon isotopic composition of particulate polycyclic aromatic hydrocarbons issued from combustion of 10 Mediterranean woods
... particulate-PAHs. Concentrations of a large panel of PAHs were measured by GC/MS analysis and the determination of molecular stable-carbon isotopic compositions was performed by GC/C/IRMS analysis. The aim of ...
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Anthropogenic imprints on nitrogen and oxygen isotopic composition of precipitation nitrate in a nitrogen-polluted city in southern China
... O isotopic patterns might have been affected by the energy consumption pattern associated with certain events, such as the global financial crisis in 2008 and the intensive construction activities preparing for ...
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Determination of strontium isotopic composition in natural waters: examples of application in subsurface waters of the coastal zone of Bragantina region, Pará.
... A determinação das razões isotópicas 87 Sr/ 86 Sr e das concen- trações de Sr nas amostras de águas subsuperficiais coletadas na região Bragantina mostram que a utilização de resina esp[r] ...
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Water defi cit modifi es the carbon isotopic composition of lipids, soluble sugars and leaves of Copaifera langsdorffi i Desf. (Fabaceae)
... Water defi cit is most frequent in forest physiognomies subjected to climate change. As a consequence, several tree species alter tissue water potential, gas exchange and production of carbon compounds to overcome damage ...
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The stable isotopic composition of molecular hydrogen in the tropopause region probed by the CARIBIC aircraft
... Table 1. The global H 2 budget and isotope budget as estimated by Pieterse et al. (2011) in a model study with global model TM5. The estimated magnitudes, isotopic signatures and uncertainties (super- and ...
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Balanço espaço-temporal do ciclo dos isótopos de Fe no material em suspensão de águas da bacia Intertropical do Rio Amazonas e de seus afluentes
... All the results point to a very important distinction related to the transport and nature of river-born suspended material in white and black water rivers: in the white water Solimões, Madeira and Amazon rivers, which ...
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Characterisation of stable isotopes to identify residence times and runoff components in two meso-scale catchments in the Abay/Upper Blue Nile basin, Ethiopia
... The mean winter and spring seasonal δ 18 O isotopic com- positions of precipitation exhibit values greater than 0 ‰ for all five stations (see Sect. 4.2.1), except the more negative values at the highest altitude ...
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Determinação da razão isotópica 87Sr/86Sr por ICP-MS no sistema solo-vinho
... for isotopic composition of Portuguese vineyards and no information is known concerning different ...and isotopic composition as fingerprints of wine geographical origin), regarding strategies ...
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Carbon primary sources and estuarine habitat use by two congeneric ariid catfishes in a subtropical coastal lagoon
... In summary, our findings revealed that both G. barbus and G. genidens derived important amounts of estuarine-produced carbon sources in their juvenile stages, and that G. genidens adults relied more on freshwater-derived ...
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HESS Opinions "A perspective on isotope versus non-isotope approaches to determine the contribution of transpiration to total evaporation"
... the isotopic composition of liquid water and water vapor ...the isotopic composition of the evaporative flux was estimated using an evaporation model applied to the isotopic ...
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Air–snow transfer of nitrate on the East Antarctic Plateau – Part 2: An isotopic model for the interpretation of deep ice-core records
... 1: Isotopic evidence for a photolytically driven dynamic equilibrium in summer”, published in the same journal (Erbland et ...field isotopic measurements pre- sented in Erbland et ...stable isotopic ...
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