Search Results - "Barth, C. A"

Tritium as a hydrological tracer in Mediterranean precipitation events by Juhlke, Tobias R, Sültenfuß, Jürgen, Trachte, Katja, Huneau, Frédéric, Garel, Emilie, Santoni, Sébastien, Barth, Johannes A. C, van Geldern, Robert

“…Climate models are in need of improved constraints for water vapor transport in the atmosphere, and tritium can serve as a powerful tracer in the hydrological…”
Get full text

Dissolved oxygen isotope modelling refines metabolic state estimates of stream ecosystems with different land use background by Piatka, David R., Venkiteswaran, Jason J., Uniyal, Bhumika, Kaule, Robin, Gilfedder, Benjamin, Barth, Johannes A. C.

“…Dissolved oxygen (DO) is crucial for aerobic life in streams and rivers and mostly depends on photosynthesis (P), ecosystem respiration (R) and atmospheric gas…”
Get full text

Mineralization of autochthonous particulate organic carbon is a fast channel of organic matter turnover in Germany's largest drinking water reservoir by Dordoni, Marlene, Seewald, Michael, Rinke, Karsten, Friese, Kurt, van Geldern, Robert, Schmidmeier, Jakob, Barth, Johannes A. C

“…Turnover of organic matter (OM) is an essential ecological function in inland water bodies and relevant for water quality. This is especially important for the…”
Get full text

Field-Based Stable Isotope Analysis of Carbon Dioxide by Mid-Infrared Laser Spectroscopy for Carbon Capture and Storage Monitoring by van Geldern, Robert, Nowak, Martin E, Zimmer, Martin, Szizybalski, Alexandra, Myrttinen, Anssi, Barth, Johannes A. C, Jost, Hans-Jürg

“…A newly developed isotope ratio laser spectrometer for CO2 analyses has been tested during a tracer experiment at the Ketzin pilot site (northern Germany) for…”
Get full text

How are oxygen budgets influenced by dissolved iron and growth of oxygenic phototrophs in an iron-rich spring system? Initial results from the Espan Spring in Fürth, Germany by Köhler, Inga, Martinez, Raul E, Piatka, David, Herrmann, Achim J, Gallo, Arianna, Gehringer, Michelle M, Barth, Johannes A. C

“…At present most knowledge on the impact of iron on 18O / 16O ratios (i.e. δ18O) of dissolved oxygen (DO) under circum-neutral conditions stems from experiments…”
Get full text

Joule heating and nitric oxide in the thermosphere by Barth, C. A., Lu, G., Roble, R. G.

“…The effect of Joule heating on the density of nitric oxide in the thermosphere was studied using observations from the Student Nitric Oxide Explorer (SNOE)…”
Get full text

Direct oxygen isotope effect identifies the rate-determining step of electrocatalytic OER at an oxidic surface by Haschke, Sandra, Mader, Michael, Schlicht, Stefanie, Roberts, André M., Angeles-Boza, Alfredo M., Barth, Johannes A. C., Bachmann, Julien

“…Understanding the mechanism of water oxidation to dioxygen represents the bottleneck towards the design of efficient energy storage schemes based on water…”
Get full text

Occurrence and fate of perfluorinated compounds in sewage sludge from Spain and Germany by Gómez-Canela, Cristian, Barth, Johannes A. C., Lacorte, Silvia

“…Perfluorinated compounds (PFCs) are persistent and bioaccumulative organic compounds used as additives in many industrial products. After use, these compounds…”
Get full text

From Global to Local and Vice Versa: On the Importance of the ‘Globalization’ Agenda in Continental Groundwater Research and Policy-Making by Filimonau, Viachaslau, Barth, Johannes A. C.

“…Groundwater is one of the most important environmental resources and its use continuously rises globally for industrial, agricultural, and drinking water…”
Get full text

Beware of effects on isotopes of dissolved oxygen during storage of natural iron‐rich water samples: A technical note by Köhler, Inga, Piatka, David, Barth, Johannes A.C., Martinez, Raul E.

“…Rationale Investigations of the isotope ratios of dissolved oxygen (δ18ODO) provide valuable information about the oxygen cycle in aquatic systems. However,…”
Get full text

Quantification of groundwater–seawater interaction in a coastal sandy aquifer system: a study from Panama, Sri Lanka by Chandrajith, Rohana, Chaturangani, Dinusha, Abeykoon, Sumith, Barth, Johannes A. C, van Geldern, Robert, Edirisinghe, E. A. N. V, Dissanayake, C. B

“…The Panama coastal aquifer system is an important water resource in the southeast coast of Sri Lanka that provides adequate supplies of water for agriculture…”
Get full text

Influences of seawater intrusion and anthropogenic activities on shallow coastal aquifers in Sri Lanka: evidence from hydrogeochemical and stable isotope data by Jayathunga, Kaushalya, Diyabalanage, Saranga, Frank, Alexander H., Chandrajith, Rohana, Barth, Johannes A. C.

“…Water supplies in coastal aquifers throughout the world are often threatened by salinization due to seawater intrusion and anthropogenic activities. In the…”
Get full text

Global observations of nitric oxide in the thermosphere by Barth, C. A., Mankoff, K. D., Bailey, S. M., Solomon, S. C.

“…Nitric oxide density in the lower thermosphere (97–150 km) has been measured from the polar‐orbiting Student Nitric Oxide Explorer (SNOE) satellite as a…”
Get full text

Possible links between groundwater geochemistry and chronic kidney disease of unknown etiology (CKDu): an investigation from the Ginnoruwa region in Sri Lanka by Balasooriya, Shyamalie, Munasinghe, Harshaka, Herath, A. T., Diyabalanage, Saranga, Ileperuma, O. A., Manthrithilake, Herath, Daniel, Christoph, Amann, Kerstin, Zwiener, Christian, Barth, Johannes A. C., Chandrajith, Rohana

“…Since at least two decades, Chronic Kidney Disease of Uncertain Etiology (CKDu) has become an increasingly discussed health issue in Sri Lanka and as well as…”
Get full text

Non-invasive determination of critical dissolved oxygen thresholds for stress physiology in fish using triple-oxygen stable isotopes and aquatic respirometry by Wassenaar, Leonard I., Crespel, Amélie, Barth, Johannes A.C., Koeck, Barbara, Závorka, Libor

“…Understanding the critical thresholds of dissolved oxygen (O 2 ) that trigger adaptive physiological responses in aquatic organisms is long hampered by a lack…”
Get full text

Stable carbon isotope analysis of dissolved inorganic carbon (DIC) and dissolved organic carbon (DOC) in natural waters - Results from a worldwide proficiency test by van Geldern, Robert, Verma, Mahendra P., Carvalho, Matheus C., Grassa, Fausto, Delgado-Huertas, Antonio, Monvoisin, Gael, Barth, Johannes A. C.

“…RATIONALE Stable carbon isotope ratios of dissolved inorganic (DIC) and organic carbon (DOC) are of particular interest in aquatic geochemistry. The precision…”
Get full text

Groundwater data improve modelling of headwater stream CO2 outgassing with a stable DIC isotope approach by Marx, Anne, Conrad, Marcus, Aizinger, Vadym, Prechtel, Alexander, Robert van Geldern, Barth, Johannes A C

“…A large portion of terrestrially derived carbon outgasses as carbon dioxide (CO2) from streams and rivers to the atmosphere. Particularly, the amount of CO2…”
Get full text

Sorption of alkylphenols on Ebro River sediments: Comparing isotherms with field observations in river water and sediments by Navarro, Alícia, Endo, Satoshi, Gocht, Tilman, Barth, Johannes A.C., Lacorte, Sílvia, Barceló, Damià, Grathwohl, Peter

“…This study reports sorption isotherms of the endocrine disruptors nonylphenol (NP) and octylphenol (OP) in three sediment samples from the Ebro River basin (NE…”
Get full text

Hydrogen Peroxide on the Surface of Europa by Carlson, R. W., Anderson, M. S., Johnson, R. E., Smythe, W. D., Hendrix, A. R., Barth, C. A., Soderblom, L. A., Hansen, G. B., McCord, T. B., Dalton, J. B., Clark, R. N., Shirley, J. H., Ocampo, A. C., Matson, D. L.

“…Spatially resolved infrared and ultraviolet wavelength spectra of Europa's leading, anti-jovian quadrant observed from the Galileo spacecraft show absorption…”
Get full text

Geological CO2 quantified by high-temporal resolution stable isotope monitoring in a salt mine by Frank, Alexander H., van Geldern, Robert, Myrttinen, Anssi, Zimmer, Martin, Barth, Johannes A. C., Strauch, Bettina

“…The relevance of CO 2 emissions from geological sources to the atmospheric carbon budget is becoming increasingly recognized. Although geogenic gas migration…”
Get full text