J
John D. Ray
Researcher at National Park Service
Publications - 33
Citations - 1202
John D. Ray is an academic researcher from National Park Service. The author has contributed to research in topics: National park & Ozone. The author has an hindex of 16, co-authored 33 publications receiving 1173 citations. Previous affiliations of John D. Ray include United States Department of the Interior & University of Denver.
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Journal ArticleDOI
Thunderstorms: An Important Mechanism in the Transport of Air Pollutants
Russell R. Dickerson,George J. Huffman,Winston T. Luke,L. J. Nunnermacker,Kenneth E. Pickering,A. C. D. Leslie,C. G. Lindsey,W. G. N. Slinn,Thomas J. Kelly,Peter H. Daum,Anthony C. Delany,Jim Greenberg,Patrick R. Zimmerman,J. F. Boatman,John D. Ray,Donald H. Stedman +15 more
TL;DR: Thunderstorms may transform local air pollution problems into regional or global atmospheric chemistry problems, and their concentrations were much greater in the outflow region of the storm, up to 11 kilometers in altitude, than in surrounding air.
Journal ArticleDOI
Increase in surface ozone at rural sites in the western US
Daniel A. Jaffe,John D. Ray +1 more
TL;DR: In this paper, the authors evaluated O3 data for the period 1987-2004 from 11 rural and remote sites in the north and western US, including two sites in Alaska, and found that there are large scale factors that influence the monthly mean O3 concentrations across the western US.
Journal ArticleDOI
Enhanced ozone over western North America from biomass burning in Eurasia during April 2008 as seen in surface and profile observations.
S. J. Oltmans,Allen S. Lefohn,J. M. Harris,David W. Tarasick,Anne M. Thompson,Heini Wernli,Beverly J. Johnson,Paul C. Novelli,Stephen A. Montzka,John D. Ray,L. Patrick,L. Patrick,Colm Sweeney,Colm Sweeney,Anne Jefferson,Anne Jefferson,Tom Dann,Jonathan Davies,Melvyn A. Shapiro,Brent N. Holben +19 more
TL;DR: Ozone profiles from an extensive series of balloon soundings showed lower tropospheric features at ∼1-6 km with enhanced ozone during the times of elevated ozone amounts at surface sites in western Canada and the U.S. as discussed by the authors.
Journal ArticleDOI
Fast chemiluminescent method for measurement of ambient ozone
TL;DR: In this article, an instrument for measuring atmospheric ozone concentrations has been developed that uses chemiluminescent dyes in various solvents, such as rosin Y in ethylene glycol, for measuring ozone at a response frequency of 7 Hz and a detection limit of 0.2 ppb ozone.
Journal ArticleDOI
Airborne sampling of selected trace chemicals above the central United States
Joe F. Boatman,D. L. Wellman,C. C. Van Valin,R. L. Gunter,John D. Ray,H. Sievering,Young Ho Kim,Stan W. Wilkison,M. Luria +8 more
TL;DR: In this article, field observations during a series of 24 atmospheric sampling flights in winter, spring, summer, and fall of 1987 provided a preliminary climatology of selected trace chemicals above the central United States.