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.
Papers
More filters
Journal ArticleDOI
Partitioning and budget of NO y species during the Mauna Loa Observatory Photochemistry Experiment
Elliot Atlas,Brian A. Ridley,Gerhard Hübler,James Walega,Mary Anne Carroll,Denise D. Montzka,Barry J. Huebert,R. B. Norton,F. E. Grahek,Sue M. Schauffler +9 more
TL;DR: The Mauna Loa Observatory Photochemistry Experiment (MLOPEX) measurements were made of total odd nitrogen (NOy) and the known individual daytime odd-nitrogen species.
Journal ArticleDOI
Is the Arctic Surface Layer a Source and Sink of NOx in Winter/Spring?
Brian A. Ridley,James Walega,Denise D. Montzka,F. E. Grahek,Elliot Atlas,Frank Flocke,V. Stroud,J. Deary,A. Gallant,H. Boudries,J. W. Bottenheim,Kurt G. Anlauf,D. Worthy,Ann Louise Sumner,Bryan G. Splawn,Paul B. Shepson +15 more
TL;DR: In this paper, measurements of NOx (NO + NO2) and the sum of reactive nitrogen constituents, NOy, were made near the surface atAlert (82.5°N), Canada during March and April1998.
Journal ArticleDOI
On the production of active nitrogen by thunderstorms over New Mexico
TL;DR: In this paper, the authors used the National Center for Atmospheric Research (NCAR) Sabreliner jet aircraft to examine the production of odd nitrogen in the middle and upper troposphere by thunderstorms.
Journal ArticleDOI
New insights into the column CH2O/NO2 ratio as an indicator of near-surface ozone sensitivity
J. Schroeder,James H. Crawford,Alan Fried,James Walega,Andrew J. Weinheimer,Armin Wisthaler,Armin Wisthaler,Markus Müller,Tomas Mikoviny,Gao Chen,Michael Shook,Donald R. Blake,Gail S. Tonnesen +12 more
TL;DR: In this article, the relative rate of radical termination from radical-radical interactions to radical-NOx interactions (referred to as LROx/LNOx) provides a good indicator of maximum ozone production along NOx ridgelines.
Journal ArticleDOI
Evaluations of NOx and highly reactive VOC emission inventories in Texas and their implications for ozone plume simulations during the Texas Air Quality Study 2006
Si-Wan Kim,Si-Wan Kim,Stuart A. McKeen,Stuart A. McKeen,Gregory J. Frost,Gregory J. Frost,Sang-Hyun Lee,Sang-Hyun Lee,Michael Trainer,Andreas Richter,Wayne M. Angevine,Wayne M. Angevine,Elliot Atlas,Laura Bianco,Laura Bianco,K. F. Boersma,K. F. Boersma,Jerome Brioude,Jerome Brioude,John P. Burrows,J. A. de Gouw,J. A. de Gouw,Alan Fried,James F. Gleason,Andreas Hilboll,Johan Mellqvist,Jeff Peischl,Jeff Peischl,Dirk Richter,Claudia Rivera,Claudia Rivera,T. B. Ryerson,S. te Lintel Hekkert,James Walega,Carsten Warneke,Carsten Warneke,Petter Weibring,Eric J. Williams,Eric J. Williams +38 more
TL;DR: This paper used the Weather Research and Forecasting-Chemistry (WRF-Chem) model with input from the US EPA's 2005 National Emission Inventory (NEI-2005), in order to evaluate emissions of nitrogen oxides (NOx = NO + NO2) and volatile organic compounds (VOCs) in the cities of Houston and Dallas-Fort Worth.