S
Samuel R. Hall
Researcher at National Center for Atmospheric Research
Publications - 139
Citations - 6623
Samuel R. Hall is an academic researcher from National Center for Atmospheric Research. The author has contributed to research in topics: Troposphere & Ozone. The author has an hindex of 41, co-authored 126 publications receiving 5343 citations. Previous affiliations of Samuel R. Hall include Food and Drug Administration.
Papers
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Journal ArticleDOI
Observational Constraints on the Oxidation of NOx in the Upper Troposphere.
Benjamin A. Nault,Charity Garland,Paul J. Wooldridge,William H. Brune,Pedro Campuzano-Jost,John D. Crounse,Douglas A. Day,Jack E. Dibb,Samuel R. Hall,L. Gregory Huey,Jose L. Jimenez,Xiaoxi Liu,Jingqiu Mao,Tomas Mikoviny,Jeff Peischl,Ilana B. Pollack,Xinrong Ren,Thomas B. Ryerson,Eric Scheuer,Kirk Ullmann,Paul O. Wennberg,Armin Wisthaler,Li Zhang,Ronald C. Cohen +23 more
TL;DR: In this article, quasi-Lagrangian observations of the chemical evolution of an air parcel following a lightning event that results in high NOx concentrations were used to characterize the daytime rates for conversion of NOx to different peroxy nitrates.
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The NO x dependence of bromine chemistry in the Arctic atmospheric boundary layer
K. D. Custard,Chelsea R. Thompson,Chelsea R. Thompson,Chelsea R. Thompson,Kerri A. Pratt,Kerri A. Pratt,Paul B. Shepson,Jin Liao,Jin Liao,Jin Liao,L. G. Huey,John J. Orlando,Andrew J. Weinheimer,Eric C. Apel,Samuel R. Hall,F. M. Flocke,Lee Mauldin,Lee Mauldin,Rebecca S. Hornbrook,Denis Pöhler,S. General,Johannes Zielcke,William R. Simpson,U. Platt,Alan Fried,Petter Weibring,Barkley C. Sive,Kirk Ullmann,Christopher A. Cantrell,Christopher A. Cantrell,D. J. Knapp,Denise D. Montzka +31 more
TL;DR: In this paper, a zero-dimensional photochemical kinetics model was used to investigate the influence of NOx on the unique springtime halogen and Hox chemistry in the Arctic.
Journal ArticleDOI
Ultraviolet actinic flux in clear and cloudy atmospheres: model calculations and aircraft-based measurements
Gustavo Gerardo Palancar,Gustavo Gerardo Palancar,Richard E. Shetter,Samuel R. Hall,Beatriz M. Toselli,Sasha Madronich +5 more
TL;DR: In this paper, the authors compared the TUV model with the scan-based actinic flux Spectroradiometers of a NASA DC-8 aircraft. And they found that the up-welling and down-wellings were significantly different in the presence of clouds.
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Chemical Tomography in a Fresh Wildland Fire Plume: A Large Eddy Simulation (LES) Study
Siyuan Wang,Siyuan Wang,Siyuan Wang,Matthew M. Coggon,Matthew M. Coggon,Georgios I. Gkatzelis,Georgios I. Gkatzelis,Georgios I. Gkatzelis,Carsten Warneke,Carsten Warneke,Ilann Bourgeois,Ilann Bourgeois,Thomas B. Ryerson,Jeff Peischl,Jeff Peischl,Patrick R. Veres,J. Andrew Neuman,J. Andrew Neuman,Johnathan W. Hair,Taylor Shingler,Marta A. Fenn,Glenn S. Diskin,L. Gregory Huey,Young Ro Lee,Eric C. Apel,Rebecca S. Hornbrook,Alan J. Hills,Samuel R. Hall,Kirk Ullmann,M. M. Bela,M. M. Bela,Michael Trainer,Michael Trainer,Rajesh Kumar,John J. Orlando,Frank Flocke,Louisa K. Emmons +36 more
TL;DR: In this paper, chemical tomography in fresh wildland fir forests has been used to simulate the chemical transport process of wildland fires. But it is difficult to represent complicated processes that are challenging to represent in chemical transport models.
Journal ArticleDOI
Tropospheric sources and sinks of gas-phase acids in the Colorado Front Range
James Mattila,Patrick Brophy,Jeffrey Kirkland,Samuel R. Hall,Kirk Ullmann,Emily V. Fischer,Steve Brown,Steve Brown,Erin E. McDuffie,Erin E. McDuffie,Erin E. McDuffie,Alex G. Tevlin,Delphine K. Farmer +12 more
TL;DR: This paper measured organic and inorganic gas-phase acids in the Front Range of Colorado to better understand their tropospheric sources and sinks using a high-resolution time-of-flight chemical ionization massspectrometer.