Search Results - "Hughes, Lara"

A 14,000‐Year Sediment Record of Mercury Accumulation and Isotopic Signatures From Lake Malaya Chabyda (Siberia) by Hughes‐Allen, Lara, Bouchard, Frédéric, Biskaborn, Boris K., Cardelli, Sahara, Subetto, Dmitry A., Laffont, Laure, Sonke, Jeroen E.

“…Eurasian permafrost soils contain large amounts of organic carbon (OC) and mercury (Hg), sequestered by vegetation during past and present interglacial…”
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First evidence of rock wall permafrost in the Pyrenees (Vignemale peak, 3,298 m a.s.l., 42°46′16″N/0°08′33″W) by Rico, Ibai, Magnin, Florence, López Moreno, Juan Ignacio, Serrano, Enrique, Alonso‐González, Esteban, Revuelto, Jesús, Hughes‐Allen, Lara, Gómez‐Lende, Manuel

“…Permafrost is a relevant component of the Pyrenean high mountains, triggering a wide range of geomorphological cryogenic processes. Although in the past…”
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Automated Identification of Thermokarst Lakes Using Machine Learning in the Ice-Rich Permafrost Landscape of Central Yakutia (Eastern Siberia) by Hughes-Allen, Lara, Bouchard, Frédéric, Séjourné, Antoine, Fougeron, Gabriel, Léger, Emmanuel

“…The current rate and magnitude of temperature rise in the Arctic are disproportionately high compared to global averages. Along with other natural and…”
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Emissions of Size-Segregated Aerosols from On-Road Vehicles in the Caldecott Tunnel by Allen, Jonathan O, Mayo, Paul R, Hughes, Lara S, Salmon, Lynn G, Cass, Glen R

“…Particulate matter emissions from the California in-use vehicle fleet were measured as 37 500 vehicles traveled through two bores of the Caldecott Tunnel…”
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Elevated concentrations of primordial radionuclides in sediments from the Reedy River and surrounding creeks in Simpsonville, South Carolina by Powell, Brian A., Hughes, Lara D., Soreefan, Aurelie M., Falta, Deborah, Wall, Michael, DeVol, Timothy A.

“…A gamma-ray survey and analysis of 16 riverbed samples from the Reedy River watershed near Simpsonville, SC were conducted and compared with national and…”
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Direct Observation of Heterogeneous Chemistry in the Atmosphere by Gard, Eric E., Kleeman, Michael J., Gross, Deborah S., Hughes, Lara S., Allen, Jonathan O., Morrical, Bradley D., Fergenson, David P., Dienes, Tas, Gälli, Markus E., Johnson, Robert J., Cass, Glen R., Prather, Kimberly A.

“…The heterogeneous replacement of chloride by nitrate in individual sea-salt particles was monitored continuously over time in the troposphere with the use of…”
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Seasonal patterns in greenhouse gas emissions from thermokarst lakes in Central Yakutia (Eastern Siberia) by Hughes‐Allen, Lara, Bouchard, Frédéric, Laurion, Isabelle, Séjourné, Antoine, Marlin, Christelle, Hatté, Christine, Costard, François, Fedorov, Alexander, Desyatkin, Alexey

“…In the ice‐rich permafrost area of Central Yakutia (Eastern Siberia, Russia), climate warming and other natural and anthropogenic disturbances have caused…”
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14,000-year Carbon Accumulation Dynamics in a Siberian Lake Reveal Catchment and Lake Productivity Changes by Hughes-Allen, Lara, Bouchard, Frédéric, Hatté, Christine, Meyer, Hanno, Pestryakova, Lyudmila A., Diekmann, Bernhard, Subetto, Dmitry A., Biskaborn, Boris K.

“…A multi-proxy paleolimnological analysis of a sediment core sequence from Lake Malaya Chabyda in Central Yakutia (Eastern Siberia, Russia) was conducted to…”
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Physical and Chemical Characterization of Atmospheric Ultrafine Particles in the Los Angeles Area by Hughes, Lara S, Cass, Glen R, Gone, Jec, Ames, Michael, Olmez, Ilhan

“…Atmospheric ultrafine particles (diameter < 0.1 μm) are under study by inhalation toxicologists to determine whether they pose a threat to public health, yet,…”
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Evaluation of Flow Cell Detector Configurations Combining Simultaneous Preconcentration and Scintillation Detection for Monitoring of Pertechnetate in Aqueous Media by Hughes, Lara D, DeVol, Timothy A

“…Flow cell detectors were developed for simultaneous concentration and scintillation detection of technetium-99 in water. Evaluated flow cell geometries…”
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Corrigendum: 14,000-Year Carbon Accumulation Dynamics in a Siberian Lake Reveal Catchment and Lake Productivity by Hughes-Allen, Lara, Bouchard, Frédéric, Hatté, Christine, Meyer, Hanno, Pestryakova, Lyudmila A., Diekmann, Bernhard, Subetto, Dmitry A., Biskaborn, Boris K.

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Ambient single particle analysis in Riverside, California by aerosol time-of-flight mass spectrometry during the SCOS97-NARSTO by Pastor, Sylvia H., Allen, Jonathan O., Hughes, Lara S., Bhave, Prakash, Cass, Glen R., Prather, Kimberly A.

“…Single-particle measurements were made using aerosol time-of-flight mass spectrometry (ATOFMS) instruments in conjunction with the 1997 Southern California…”
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Source Contributions to the Size and Composition Distribution of Atmospheric Particles:  Southern California in September 1996 by Kleeman, Michael J, Hughes, Lara S, Allen, Jonathan O, Cass, Glen R

“…An air quality model that follows the evolution of single particles in the atmosphere has been combined with new emissions measurements and then used to…”
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Particle Detection Efficiencies of Aerosol Time of Flight Mass Spectrometers under Ambient Sampling Conditions by Allen, Jonathan O, Fergenson, David P, Gard, Eric E, Hughes, Lara S, Morrical, Bradley D, Kleeman, Michael J, Gross, Deborah S, Gälli, Markus E, Prather, Kimberly A, Cass, Glen R

“…Aerosol time-of-flight mass spectrometers (ATOFMS) measure the size and chemical composition of single aerosol particles. To date, these instruments have…”
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The chemical composition of atmospheric ultrafine particles by Cass, Glen R, Hughes, Lara A., Bhave, Prakash, Kleeman, Michael J., Allen, Jonathan O., Salmon, Lynn G.

“…8.7% elemental carbon, 8.2% sulphate, 6.8% nitrate, 3.7% ammonium ion (excluding one outlier), 0.6% sodium and 0.5% chloride. The most abundant catalytic…”
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Evolution of Nitrogen Species Air Pollutants along Trajectories Crossing the Los Angeles Area by Hughes, Lara S, Allen, Jonathan O, Salmon, Lynn G, Mayo, Paul R, Johnson, Robert J, Cass, Glen R

“…Ambient aerosol sampling was conducted in Diamond Bar, Mira Loma, and Riverside, CA, to observe at close range the effects of ammonia emissions on air quality…”
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Size and Composition Distribution of Atmospheric Particles in Southern California by Hughes, Lara S, Allen, Jonathan O, Kleeman, Michael J, Johnson, Robert J, Cass, Glen R, Gross, Deborah S, Gard, Eric E, Gälli, Markus E, Morrical, Bradley D, Fergenson, David P, Dienes, Tas, Noble, Christopher A, Liu, Don-Y, Silva, Philip J, Prather, Kimberly A

“…Continuous measurements of single particle size and chemical composition in the atmosphere are made using aerosol time-of-flight mass spectrometers (ATOFMS)…”
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Quantification of ATOFMS Data by Multivariate Methods by Fergenson, David P, Song, Xin-Hua, Ramadan, Ziad, Allen, Jonathan O, Hughes, Lara S, Cass, Glen R, Hopke, Philip K, Prather, Kimberly A

“…Aerosol time-of-flight mass spectrometry (ATOFMS) is capable of measuring the sizes and chemical compositions of individual polydisperse aerosol particles in…”
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Evaluation of an Air Quality Model for the Size and Composition of Source-Oriented Particle Classes by Bhave, Prakash V, Kleeman, Michael J, Allen, Jonathan O, Hughes, Lara S, Prather, Kimberly A, Cass, Glen R

“…Air quality model predictions of the size and composition of atmospheric particle classes are evaluated by comparison with aerosol time-of-flight mass…”
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ANOMALOUSLY HIGH LEVELS OF URANIUM AND OTHER NATURALLY OCCURRING RADIONUCLIDES IN PRIVATE WELLS IN THE PIEDMONT REGION OF SOUTH CAROLINA by Hughes, Lara D, Powell, Brian A, Soreefan, Aurelie M, Falta, Deborah A, DeVol, Timothy A

“…Anomalously high levels of uranium and Pb have been detected in untreated domestic groundwater wells near Simpsonville/Fountain Inn, South Carolina. Nine wells…”
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