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There are a total of 35 record(s) matching your query.
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Two-photon laser-induced fluorescence detection of OH
Author(s): Davis, D. D.; Bradshaw, J. D.; Rodgers, M. O.
Abstract: The TP-LIF OH sensor is based on the principle that a molecule having multiple energy states, all of which are bonding, can be pumped into the highest state with the resulting fluorescence being blue-shifted relative to all ...
NASA Center: NASA (non Center Specific)
Publication Year: 1986
Added to NTRS: 2008-05-29
Accession Number: 87N15533; Document ID: 19870006100
Relationship of peroxyacetyl nitrate to active and total odd nitrogen at northern high latitudes: influence of reservoir species on NOx and O3
Author(s): Singh, H. B.; Herlth, D.; O'Hara, D.; Zahnle, K.; Bradshaw, J. D.; Sandholm, S. T.; Talbot, R.; Crutzen, P. J.; Kanakidou, M.
Abstract: Measurements of peroxyacetyl nitrate (PAN), NO, NO2, HNO3, NOy (total odd nitrogen), and O3 were made in the high-latitude troposphere over North America and Greenland (35 degrees to 82 degrees N) during the Arctic Boundary ...
NASA Center: Ames Research Center
Publication Year: 1992
Added to NTRS: 2006-08-02
Document ID: 20040090052
Absorption cross sections and kinetic considerations of the IO species as determined by laser flash photolysis/laser-absorption spectroscopy
Author(s): Stickel, R. E.; Hynes, A. J.; Bradshaw, J. D.; Chameides, W. L.; Davis, D. D.
Abstract: No Abstract Available
NASA Center: NASA (non Center Specific)
Publication Year: 1986
Added to NTRS: 2005-10-13
Accession Number: 90N70705; Document ID: 19900066759; Report Number: NAS 1.26:186430, NASA-CR-186430
A two-photon laser-induced fluorescence field instrument for ground-based and airborne measurements of atmospheric NO
Author(s): Bradshaw, J. D.; Rodgers, M. O.; Sandholm, S. T.; Kesheng, S.; Davis, D. D.
Abstract: This paper reports on a new two-photon laser-induced fluorescence (TP-LIF) sensor capable of making routine measurements at the few parts per trillion volume level. This direct spectroscopic detection method has been ...
NASA Center: NASA (non Center Specific)
Publication Year: 1985
Added to NTRS: 2004-11-03
Accession Number: 86A20456; Document ID: 19860035718
Large-Scale Distributions of Tropospheric Nitric, Formic, and Acetic acids Over the Westerm Pacific Basin During Wintertime
Author(s): Talbot, R. W.; Dibb, J. E.; Lefer, B. L.; Scheuer, E. M.; Bradshaw, J. D.; Sandholm, S. T.; Smyth, S.; Blake, D. R.; Blake, N. J.; Sachse, G. W.; Collins, J. E.; Gregory, G. L.
Abstract: We report here measurements of the acidic gases nitric (HNO3), formic (HCOOH), and acetic (CH3COOH) over the western Pacific basin during the February-March 1994 Pacific Exploratory Mission-West (PEM-West B). These data were ...
NASA Center: Langley Research Center
Publication Year: 1997
Added to NTRS: 2004-11-03
Document ID: 19980019625; Report Number: NAS 1.26:207353, NASA/CR-97-207353, Paper-96JD02975
Factors influencing dry season ozone distributions over the tropical South Atlantic
Author(s): Anderson, B. E.; Gregory, G. L.; Barrick, J. D. W.; Collins, J. E.; Sachse, G. W.; Hudgins, C. H.; Bradshaw, J. D.; Sandholm, S. T.
Abstract: Airborne measurements of trace gas and aerosol species were obtained in the lower troposphere (less than 5 km) over the western Atlantic Ocean between 13 deg S and 40 deg N during the August/September 1990 NASA Chemical ...
NASA Center: Langley Research Center
Publication Year: 1993
Added to NTRS: 2004-11-03
Accession Number: 95A80856; Document ID: 19950049257
Development of airborne laser-induced fluorescence systems for the detection of atmospheric trace gases
Author(s): Davis, D. D.; Rodgers, M. O.; Bradshaw, J. D.
Abstract: No Abstract Available
NASA Center: NASA (non Center Specific)
Publication Year: 1985
Added to NTRS: 2004-11-03
Accession Number: 85N73637; Document ID: 19850071618; Report Number: NAS 1.26:176254, NASA-CR-176254
Acetone in the atmosphere: Distribution, sources, and sinks
Author(s): Singh, H. B.; O'Hara, D.; Herlth, D.; Sachse, W.; Blake, D. R.; Bradshaw, J. D.; Kanakidou, M.; Crutzen, P. J.
Abstract: Acetone (CH3COCH3) was found to be the dominant nonmethane organic species present in the atmosphere sampled primarily over eastern Canada (0-6 km, 35 deg-65 deg N) during ABLE3B (July to August 1990). A concentration range ...
NASA Center: Ames Research Center, Langley Research Center
Publication Year: 1994
Added to NTRS: 2004-11-03
Accession Number: 95A62883; Document ID: 19950031284
Free tropospheric and boundary layer measurements of NO over the central and eastern North Pacific Ocean
Author(s): Davis, D. D.; Bradshaw, J. D.; Rodgers, M. O.; Sandholm, S. T.; Kesheng, S.
Abstract: Reported in this paper are the Georgia Institute of Technology NO results from the fall 1983 NASA GTE/CITE 1 Airborne Field Sampling Program. These data were predominantly collected over a geographical area defined by the ...
NASA Center: NASA (non Center Specific)
Publication Year: 1987
Added to NTRS: 2004-11-03
Accession Number: 87A33432; Document ID: 19870046158
Upper Tropospheric/Lower Stratospheric Distribution of Reactive Nitrogen and Ozone
Author(s): Singh, H. S.; Chen, Y.; Sachse, G. W.; Talbot, R.; Blake, D. R.; Kondo, Y.; Bradshaw, J. D.; Heikes, B.; Thornton, D.
Abstract: In-situ measurements of a large number of trace chemicals from upper troposphere/lower stratosphere (UT/LS) were performed with the NASA DC-8 aircraft during February/March 1994 over the Pacific Ocean (10 S to 60 N). Mixing ...
NASA Center: Ames Research Center
Publication Year: 1997
Added to NTRS: 2004-11-03
Document ID: 20020047007
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