Search Results - "Keutsch, Frank N."

Contribution of Hydroxymethane Sulfonate to Ambient Particulate Matter: A Potential Explanation for High Particulate Sulfur During Severe Winter Haze in Beijing by Moch, Jonathan M., Dovrou, Eleni, Mickley, Loretta J., Keutsch, Frank N., Cheng, Yuan, Jacob, Daniel J., Jiang, Jingkun, Li, Meng, Munger, J. William, Qiao, Xiaohui, Zhang, Qiang

“…PM2.5 during severe winter haze in Beijing, China, has reached levels as high as 880 μg/m3, with sulfur compounds contributing significantly to PM2.5…”
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Glyoxal in Aqueous Ammonium Sulfate Solutions: Products, Kinetics and Hydration Effects by Yu, Ge, Bayer, Amanda R, Galloway, Melissa M, Korshavn, Kyle J, Fry, Charles G, Keutsch, Frank N

“…Reactions and interactions between glyoxal and salts in aqueous solution were studied. Glyoxal was found to react with ammonium to form imidazole,…”
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Missing Gas-Phase Source of HONO Inferred from Zeppelin Measurements in the Troposphere by Li, Xin, Rohrer, Franz, Hofzumahaus, Andreas, Brauers, Theo, Häseler, Rolf, Bohn, Birger, Broch, Sebastian, Fuchs, Hendrik, Gomm, Sebastian, Holland, Frank, Jäger, Julia, Kaiser, Jennifer, Keutsch, Frank N., Lohse, Insa, Lu, Keding, Tillmann, Ralf, Wegener, Robert, Wolfe, Glenn M., Mentel, Thomas F., Kiendler-Scharr, Astrid, Wahner, Andreas

“…Gaseous nitrous acid (HONO) is an important precursor of tropospheric hydroxyl radicals (OH). OH is responsible for atmospheric self-cleansing and controls the…”
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Qualitative and quantitative analysis of atmospheric organosulfates in Centreville, Alabama by Hettiyadura, Anusha P. S, Jayarathne, Thilina, Baumann, Karsten, Goldstein, Allen H, de Gouw, Joost A, Koss, Abigail, Keutsch, Frank N, Skog, Kate, Stone, Elizabeth A

“…Organosulfates are components of secondary organic aerosols (SOA) that form from oxidation of volatile organic compounds (VOCs) in the presence of sulfate. In…”
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Predicting Real Refractive Index of Organic Aerosols From Elemental Composition by Li, Yaowei, Bai, Bin, Dykema, John, Shin, Nara, Lambe, Andrew T., Chen, Qi, Kuwata, Mikinori, Lee Ng, Nga, Keutsch, Frank N., Liu, Pengfei

“…Accurate estimates of aerosol refractive index (RI) are critical for modeling aerosol‐radiation interaction, yet this information is limited for ambient…”
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High resolution nanoscale chemical analysis of bitumen surface microstructures by Koyun, Ayse N., Zakel, Julia, Kayser, Sven, Stadler, Hartmut, Keutsch, Frank N., Grothe, Hinrich

“…Surface microstructures of bitumen are key sites in atmospheric photo-oxidation leading to changes in the mechanical properties and finally resulting in…”
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Isoprene photochemistry over the Amazon rainforest by Liu, Yingjun, Brito, Joel, Dorris, Matthew R., Rivera-Rios, Jean C., Seco, Roger, Bates, Kelvin H., Artaxo, Paulo, Duvoisin, Sergio, Keutsch, Frank N., Kim, Saewung, Goldstein, Allen H., Guenther, Alex B., Manzi, Antonio O., Souza, Rodrigo A. F., Springston, Stephen R., Watson, Thomas B., McKinney, Karena A., Martin, Scot T.

“…Isoprene photooxidation is a major driver of atmospheric chemistry over forested regions. Isoprene reacts with hydroxyl radicals (OH) and molecular oxygen to…”
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Product distribution, kinetics, and aerosol formation from the OH oxidation of dimethyl sulfide under different RO2 regimes by Ye, Qing, Goss, Matthew B, Krechmer, Jordan E, Majluf, Francesca, Zaytsev, Alexander, Li, Yaowei, Roscioli, Joseph R, Canagaratna, Manjula, Keutsch, Frank N, Heald, Colette L, Kroll, Jesse H

“…The atmospheric oxidation of dimethyl sulfide (DMS) represents a major natural source of atmospheric sulfate aerosols. However, there remain large…”
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Identification of organic hydroperoxides and peroxy acids using atmospheric pressure chemical ionization–tandem mass spectrometry (APCI-MS/MS): application to secondary organic aerosol by Zhou, Shouming, Rivera-Rios, Jean C, Keutsch, Frank N, Abbatt, Jonathan P. D

“…Molecules with hydroperoxide functional groups are of extreme importance to both the atmospheric and biological chemistry fields. In this work, an analytical…”
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Glyoxal Yield from Isoprene Oxidation and Relation to Formaldehyde: Chemical Mechanism, Constraints from SENEX Aircraft Observations, and Interpretation of OMI Satellite Data by Miller, Christopher Chan, Jacob, Daniel J., Marais, Eloise A., Yu, Karen, Travis, Katherine R., Kim, Patrick S., Fisher, Jenny A., Zhu, Lei, Wolfe, Glenn M., Hanisco, Thomas F., Keutsch, Frank N., Kaiser, Jennifer, Min, Kyung-Eun, Brown, Steven S., Washenfelder, Rebecca A., Gonzalez Abad, Gonzalo, Chance, Kelly

“…Glyoxal (CHOCHO) is produced in the atmosphere by the oxidation of volatile organic compounds(VOCs). Like formaldehyde (HCHO), another VOC oxidation product,…”
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Emissions of Glyoxal and Other Carbonyl Compounds from Agricultural Biomass Burning Plumes Sampled by Aircraft by Zarzana, Kyle J, Min, Kyung-Eun, Washenfelder, Rebecca A, Kaiser, Jennifer, Krawiec-Thayer, Mitchell, Peischl, Jeff, Neuman, J. Andrew, Nowak, John B, Wagner, Nicholas L, Dubè, William P, St. Clair, Jason M, Wolfe, Glenn M, Hanisco, Thomas F, Keutsch, Frank N, Ryerson, Thomas B, Brown, Steven S

“…We report enhancements of glyoxal and methylglyoxal relative to carbon monoxide and formaldehyde in agricultural biomass burning plumes intercepted by the NOAA…”
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Validation of satellite formaldehyde (HCHO) retrievals using observations from 12 aircraft campaigns by Zhu, Lei, González Abad, Gonzalo, Nowlan, Caroline R, Chan Miller, Christopher, Chance, Kelly, Apel, Eric C, DiGangi, Joshua P, Fried, Alan, Hanisco, Thomas F, Hornbrook, Rebecca S, Hu, Lu, Kaiser, Jennifer, Keutsch, Frank N, Permar, Wade, St. Clair, Jason M, Wolfe, Glenn M

“…Formaldehyde (HCHO) has been measured from space for more than 2 decades. Owing to its short atmospheric lifetime, satellite HCHO data are used widely as a…”
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Water Clusters: Untangling the Mysteries of the Liquid, One Molecule at a Time by Keutsch, Frank N., Saykally, Richard J.

“…Extensive terahertz laser vibration-rotation-tunneling spectra and mid-IR laser spectra have been compiled for several isotopomers of small (dimer through…”
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Measurement techniques for identifying and quantifying hydroxymethanesulfonate (HMS) in an aqueous matrix and particulate matter using aerosol mass spectrometry and ion chromatography by Dovrou, Eleni, Lim, Christopher Y, Canagaratna, Manjula R, Kroll, Jesse H, Worsnop, Douglas R, Keutsch, Frank N

“…Oxidation of sulfur dioxide (SO2) in the gas phase and in cloud and fog water leads to the formation of sulfate that contributes to ambient particulate matter…”
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Kinetics and Product Yields of the OH Initiated Oxidation of Hydroxymethyl Hydroperoxide by Allen, Hannah M, Crounse, John D, Bates, Kelvin H, Teng, Alexander Paichung, Krawiec-Thayer, Mitchell P, Rivera-Rios, Jean C, Keutsch, Frank N, St. Clair, Jason M, Hanisco, Thomas F, Møller, Kristian H, Kjaergaard, Henrik G, Wennberg, Paul O

“…Hydroxymethyl hydroperoxide (HMHP), formed in the reaction of the C1 Criegee intermediate with water, is among the most abundant organic peroxides in the…”
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Author Correction: High resolution nanoscale chemical analysis of bitumen surface microstructures by Koyun, Ayse N., Zakel, Julia, Kayser, Sven, Stadler, Hartmut, Keutsch, Frank N., Grothe, Hinrich

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Dimensionality-reduction techniques for complex mass spectrometric datasets: application to laboratory atmospheric organic oxidation experiments by Koss, Abigail R, Canagaratna, Manjula R, Zaytsev, Alexander, Krechmer, Jordan E, Breitenlechner, Martin, Nihill, Kevin J, Lim, Christopher Y, Rowe, James C, Roscioli, Joseph R, Keutsch, Frank N, Kroll, Jesse H

“…Oxidation of organic compounds in the atmosphere produces an immensely complex mixture of product species, posing a challenge for both their measurement in…”
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Hydroxycarboxylic Acid-Derived Organosulfates: Synthesis, Stability, and Quantification in Ambient Aerosol by Olson, Corey N, Galloway, Melissa M, Yu, Ge, Hedman, Curtis J, Lockett, Matthew R, Yoon, Tehshik, Stone, Elizabeth A, Smith, Lloyd M, Keutsch, Frank N

“…Organosulfates have been proposed as contributors to aerosol growth and have been detected in both chamber and atmospheric aerosol samples. We present a simple…”
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Observational constraints on glyoxal production from isoprene oxidation and its contribution to organic aerosol over the Southeast United States by Li, Jingyi, Mao, Jingqiu, Min, Kyung‐Eun, Washenfelder, Rebecca A., Brown, Steven S., Kaiser, Jennifer, Keutsch, Frank N., Volkamer, Rainer, Wolfe, Glenn M., Hanisco, Thomas F., Pollack, Ilana B., Ryerson, Thomas B., Graus, Martin, Gilman, Jessica B., Lerner, Brian M., Warneke, Carsten, Gouw, Joost A., Middlebrook, Ann M., Liao, Jin, Welti, André, Henderson, Barron H., McNeill, V. Faye, Hall, Samuel R., Ullmann, Kirk, Donner, Leo J., Paulot, Fabien, Horowitz, Larry W.

“…We use a 0‐D photochemical box model and a 3‐D global chemistry‐climate model, combined with observations from the NOAA Southeast Nexus (SENEX) aircraft…”
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Technical note: Conversion of isoprene hydroxy hydroperoxides (ISOPOOHs) on metal environmental simulation chamber walls by Bernhammer, Anne-Kathrin, Breitenlechner, Martin, Keutsch, Frank N, Hansel, Armin

“…Sources and sinks of isoprene oxidation products from low-NOx isoprene chemistry have been studied at the CERN CLOUD (Cosmics Leaving Outdoor Droplets) chamber…”
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