J
James Walega
Researcher at Institute of Arctic and Alpine Research
Publications - 147
Citations - 7709
James Walega is an academic researcher from Institute of Arctic and Alpine Research. The author has contributed to research in topics: Troposphere & Spectrometer. The author has an hindex of 51, co-authored 144 publications receiving 6953 citations. Previous affiliations of James Walega include National Center for Atmospheric Research & University of Colorado Boulder.
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Journal ArticleDOI
Vertical transport, entrainment, and scavenging processes affecting trace gases in a modeled and observed SEAC4RS case study
G. C. Cuchiara,G. C. Cuchiara,Alan Fried,Mary C. Barth,M. M. Bela,M. M. Bela,Cameron R. Homeyer,Benjamin Gaubert,James Walega,Petter Weibring,Dirk Richter,Paul O. Wennberg,John D. Crounse,Michelle J. Kim,G. Diskin,Thomas F. Hanisco,Glenn M. Wolfe,Glenn M. Wolfe,Andreas J. Beyersdorf,Andreas J. Beyersdorf,Jeff Peischl,I. B. Pollack,I. B. Pollack,J. M. St. Clair,J. M. St. Clair,J. M. St. Clair,Sarah Woods,Simone Tanelli,T. V. Bui,Jonathan M. Dean-Day,L. G. Huey,N. Heath +31 more
TL;DR: This article examined the processes responsible for vertical transport, entrainment, and scavenging of soluble ozone precursors (formaldehyde and peroxides) for midlatitude convective storms sampled on 2 September 2013 during the Studies of Emissions, Atmospheric Composition, Clouds and Climate Coupling by Regional Surveys (SEAC) study.
Journal ArticleDOI
Impacts of physical parameterization on prediction of ethane concentrations for oil and gas emissions in WRF-Chem
Maryam Abdi-Oskouei,Gabriele Pfister,Frank Flocke,Negin Sobhani,Pablo E. Saide,Alan Fried,Dirk Richter,Petter Weibring,James Walega,Gregory R. Carmichael +9 more
TL;DR: In this paper, the authors evaluated the impact of the following configurations and parameterizations on predicted ethane concentrations: planetary boundary layer (PBL), daily re-initialization of meteorological variables, meteorological initial and boundary conditions, and horizontal resolution.
The Impact of Oil and Natural Gas Activity on Ozone Formation in the Colorado Front Range
Rebecca S. Hornbrook,E. C. Apel,Alan J. Hills,Donald R. Blake,Nicola J. Blake,J. Schroeder,Alan Fried,P. Weibring,Dirk Richter,James Walega,L. Mauldin,Christopher A. Cantrell,Samuel R. Hall,Kirk Ullmann,Andrew J. Weinheimer,Denise D. Montzka,John J. Orlando,G. S. Tyndall,Teresa Campos,M. H. Stell,Brian G. Heikes,Victoria Treadaway,Daniel O'Sullivan,L. G. Huey,David B. Tanner,Ronald C. Cohen,F. M. Flocke,Gabriele Pfister,Christoph Knote,Louisa K. Emmons +29 more
Journal ArticleDOI
Stark-enhanced diode-laser spectroscopy of formaldehyde using a modified Herriott-type multipass cell
Christoph Dyroff,Petter Weibring,Alan Fried,Dirk Richter,James Walega,Andreas Zahn,Wolfgang Freude,Peter Werle +7 more
TL;DR: In this paper, the combined use of a novel multipass cell and a sample modulation scheme based on the Stark effect in molecular spectra is used to suppress time dependent background signals, which in general limit spectrometer performance during measurements.
Journal ArticleDOI
Central/eastern North Pacific photochemical precursor distributions for fall/spring seasons as defined by airborne field studies
B. DiNunno,Douglas D. Davis,G. Chen,Gerald L. Gregory,G. W. Sachse,Bruce E. Anderson,Stephanie A. Vay,Melody A. Avery,Brian A. Ridley,Mary Anne Carroll,James Walega,Denise D. Montzka,F. E. Grahek,J. D. Bradshaw,Scott T. Sandholm,Yoshiko Kondo,Gregory L. Kok,Donald R. Blake,Nicola J. Blake,John D. W. Barrick,Henry E. Fuelberg,Brian D. Martin,A. Balok +22 more
TL;DR: In this article, data from 10 aircraft programs recorded over the central/eastern North Pacific (180°-120°W, 0°-45°N) were assembled for the purpose of assessing an atmospheric chemical climatology for this region.