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Brune WH, Baier BC, Thomas J, Ren X, Cohen RC, Pusede SE, Browne EC, Goldstein AH, Gentner DR, Keutsch FN, Thornton JA, Harrold S, Lopez-Hilfiker FD, Wennberg PO. Ozone production chemistry in the presence of urban plumes. Faraday Discuss 2016; 189:169-89. [DOI: 10.1039/c5fd00204d] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Ozone pollution affects human health, especially in urban areas on hot sunny days. Its basic photochemistry has been known for decades and yet it is still not possible to correctly predict the high ozone levels that are the greatest threat. The CalNex_SJV study in Bakersfield CA in May/June 2010 provided an opportunity to examine ozone photochemistry in an urban area surrounded by agriculture. The measurement suite included hydroxyl (OH), hydroperoxyl (HO2), and OH reactivity, which are compared with the output of a photochemical box model. While the agreement is generally within combined uncertainties, measured HO2 far exceeds modeled HO2 in NOx-rich plumes. OH production and loss do not balance as they should in the morning, and the ozone production calculated with measured HO2 is a decade greater than that calculated with modeled HO2 when NO levels are high. Calculated ozone production using measured HO2 is twice that using modeled HO2, but this difference in calculated ozone production has minimal impact on the assessment of NOx-sensitivity or VOC-sensitivity for midday ozone production. Evidence from this study indicates that this important discrepancy is not due to the HO2 measurement or to the sampling of transported plumes but instead to either emissions of unknown organic species that accompany the NO emissions or unknown photochemistry involving nitrogen oxides and hydrogen oxides, possibly the hypothesized reaction OH + NO + O2 → HO2 + NO2.
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2
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Shallcross DE, Leather KE, Bacak A, Xiao P, Lee EPF, Ng M, Mok DKW, Dyke JM, Hossaini R, Chipperfield MP, Khan MAH, Percival CJ. Reaction between CH3O2 and BrO Radicals: A New Source of Upper Troposphere Lower Stratosphere Hydroxyl Radicals. J Phys Chem A 2015; 119:4618-32. [DOI: 10.1021/jp5108203] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Kimberley E. Leather
- School
of Earth, Atmospheric and Environmental Sciences, The University of Manchester, Williamson Building, Oxford Road, Manchester M13 9PL, U.K
| | - Asan Bacak
- School
of Earth, Atmospheric and Environmental Sciences, The University of Manchester, Williamson Building, Oxford Road, Manchester M13 9PL, U.K
| | - Ping Xiao
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, U.K
| | - Edmond P. F. Lee
- School
of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
- Department
of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Maggie Ng
- Department
of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Daniel K. W. Mok
- Department
of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - John M. Dyke
- School
of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
| | - Ryan Hossaini
- School
of Earth and Environment, University of Leeds, Leeds LS2 9JT, U.K
| | | | - M. Anwar H. Khan
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, U.K
| | - Carl J. Percival
- School
of Earth, Atmospheric and Environmental Sciences, The University of Manchester, Williamson Building, Oxford Road, Manchester M13 9PL, U.K
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3
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Stone D, Whalley LK, Heard DE. Tropospheric OH and HO2 radicals: field measurements and model comparisons. Chem Soc Rev 2012; 41:6348-404. [DOI: 10.1039/c2cs35140d] [Citation(s) in RCA: 332] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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4
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Edwards P, Evans MJ, Commane R, Ingham T, Stone D, Mahajan AS, Oetjen H, Dorsey JR, Hopkins JR, Lee JD, Moller SJ, Leigh R, Plane JMC, Carpenter LJ, Heard DE. Hydrogen oxide photochemistry in the northern Canadian spring time boundary layer. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2011jd016390] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- P. Edwards
- School of Chemistry; University of Leeds; Leeds UK
| | - M. J. Evans
- School of Earth and Environment; University of Leeds; Leeds UK
| | - R. Commane
- School of Chemistry; University of Leeds; Leeds UK
| | - T. Ingham
- School of Chemistry; University of Leeds; Leeds UK
- National Centre for Atmospheric Science; University of Leeds; Leeds UK
| | - D. Stone
- School of Chemistry; University of Leeds; Leeds UK
| | | | - H. Oetjen
- School of Chemistry; University of Leeds; Leeds UK
| | - J. R. Dorsey
- School of Earth, Atmospheric and Environmental Sciences; University of Manchester; Manchester UK
| | - J. R. Hopkins
- Department of Chemistry; University of York; Heslington UK
- National Centre for Atmospheric Science; University of York; Heslington UK
| | - J. D. Lee
- Department of Chemistry; University of York; Heslington UK
- National Centre for Atmospheric Science; University of York; Heslington UK
| | - S. J. Moller
- Department of Chemistry; University of York; Heslington UK
| | - R. Leigh
- Department of Physics and Astronomy; University of Leicester; Leicester UK
| | | | | | - D. E. Heard
- School of Chemistry; University of Leeds; Leeds UK
- National Centre for Atmospheric Science; University of Leeds; Leeds UK
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Yabushita A, Enami S, Sakamoto Y, Kawasaki M, Hoffmann MR, Colussi AJ. Anion-catalyzed dissolution of NO2 on aqueous microdroplets. J Phys Chem A 2009; 113:4844-8. [PMID: 19331373 DOI: 10.1021/jp900685f] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Fifty-seven years after NO(x) (NO + NO(2)) were identified as essential components of photochemical smog, atmospheric chemical models fail to correctly predict *OH/HO(2)* concentrations under NO(x)-rich conditions. This deficiency is due, in part, to the uncertain rates and mechanism for the reactive dissolution of NO(2)(g) (2NO(2) + H(2)O = NO(3)(-) + H(+) + HONO) in fog and aerosol droplets. Thus, state-of-the-art models parametrize the uptake of NO(2) by atmospheric aerosol from data obtained on "deactivated tunnel wall residue". Here, we report experiments in which NO(3)(-) production on the surface of microdroplets exposed to NO(2)(g) for approximately 1 ms is monitored by online thermospray mass spectrometry. NO(2) does not dissolve in deionized water (NO(3)(-) signals below the detection limit) but readily produces NO(3)(-) on aqueous NaX (X = Cl, Br, I) microdroplets with NO(2) uptake coefficients gamma that vary nonmonotonically with electrolyte concentration and peak at gamma(max) approximately 10(-4) for [NaX] approximately 1 mM, which is >10(3) larger than that in neat water. Since I(-) is partially oxidized to I(2)(*-) in this process, anions seem to capture NO(2)(g) into X-NO(2)(*-) radical anions for further reaction at the air/water interface. By showing that gamma is strongly enhanced by electrolytes, these results resolve outstanding discrepancies between previous measurements in neat water versus NaCl-seeded clouds. They also provide a general mechanism for the heterogeneous conversion of NO(2)(g) to (NO(3)(-) + HONO) on the surface of aqueous media.
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Fried A, Olson JR, Walega JG, Crawford JH, Chen G, Weibring P, Richter D, Roller C, Tittel F, Porter M, Fuelberg H, Halland J, Bertram TH, Cohen RC, Pickering K, Heikes BG, Snow JA, Shen H, O'Sullivan DW, Brune WH, Ren X, Blake DR, Blake N, Sachse G, Diskin GS, Podolske J, Vay SA, Shetter RE, Hall SR, Anderson BE, Thornhill L, Clarke AD, McNaughton CS, Singh HB, Avery MA, Huey G, Kim S, Millet DB. Role of convection in redistributing formaldehyde to the upper troposphere over North America and the North Atlantic during the summer 2004 INTEX campaign. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2007jd009760] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Snow JA, Heikes BG, Shen H, O'Sullivan DW, Fried A, Walega J. Hydrogen peroxide, methyl hydroperoxide, and formaldehyde over North America and the North Atlantic. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2006jd007746] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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8
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Huey LG. Measurement of trace atmospheric species by chemical ionization mass spectrometry: speciation of reactive nitrogen and future directions. MASS SPECTROMETRY REVIEWS 2007; 26:166-84. [PMID: 17243143 DOI: 10.1002/mas.20118] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Chemical ionization mass spectrometry (CIMS) has proven to be a powerful method for sensitive, fast time response (t approximately 1 sec) measurements of various atmospheric compounds with limits of detection (LOD) of the order of tens of pptv and lower. The rapid time response of CIMS is particularly well suited for airborne measurements and its application has largely grown out of airborne measurements in the stratosphere and upper troposphere. This work reviews some of the advances in CIMS technology that have occurred in the past decade. In particular, CIMS methods for selective measurement of reactive nitrogen species (e.g., HNO3, HO2NO2, PAN, and NH3) in the lower atmosphere (altitudes approximately 0-8 km) are described. In addition, recent developments in CIMS technology for the selective measurement of gas-phase hydroperoxides and aerosol chemical composition are briefly described.
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Affiliation(s)
- L Gregory Huey
- School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
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Kim S, Huey LG, Stickel RE, Tanner DJ, Crawford JH, Olson JR, Chen G, Brune WH, Ren X, Lesher R, Wooldridge PJ, Bertram TH, Perring A, Cohen RC, Lefer BL, Shetter RE, Avery M, Diskin G, Sokolik I. Measurement of HO2NO2in the free troposphere during the Intercontinental Chemical Transport Experiment–North America 2004. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2006jd007676] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Olson JR, Crawford JH, Chen G, Brune WH, Faloona IC, Tan D, Harder H, Martinez M. A reevaluation of airborne HOxobservations from NASA field campaigns. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005jd006617] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jennifer R. Olson
- Atmospheric Sciences Division, Langley Research Center; NASA; Hampton Virginia USA
| | - James H. Crawford
- Atmospheric Sciences Division, Langley Research Center; NASA; Hampton Virginia USA
| | - Gao Chen
- Atmospheric Sciences Division, Langley Research Center; NASA; Hampton Virginia USA
| | - William H. Brune
- Department of Meteorology; Pennsylvania State University; University Park Pennsylvania USA
| | - Ian C. Faloona
- Department of Land, Air and Water Resources; University of California; Davis California USA
| | - David Tan
- School of Earth and Atmospheric Sciences; Georgia Institute of Technology; Atlanta Georgia USA
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Green TJ, Reeves CE, Fleming ZL, Brough N, Rickard AR, Bandy BJ, Monks PS, Penkett SA. An improved dual channel PERCA instrument for atmospheric measurements of peroxy radicals. ACTA ACUST UNITED AC 2006; 8:530-6. [PMID: 16688354 DOI: 10.1039/b514630e] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper describes a new dual-channel PEroxy RadiCal Amplification (PERCA) instrument, which has been designed to improve the time resolution and signal to noise and to reduce the interference caused by variations in ambient ozone concentrations. The instrument was run at the Weybourne Atmospheric Observatory (WAO), North Norfolk, during WAOWEX (Weybourne Atmospheric Observatory Winter Experiment) in January/February 2002 and INSPECTRO (Influence of clouds on the spectral actinic flux in the lower troposphere) in September 2002. The performance of the instrument is assessed and compared to that of a single channel instrument. In particular, it is shown how the precision is greatly improved in fluctuating background ozone conditions. In addition the improved time response of the instrument allows changes in peroxy radical concentrations to be related to rapid changes in nitric oxide concentrations and the ozone photolysis frequency, j(O(1)D).
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Affiliation(s)
- Timothy J Green
- School of Environmental Science, University of East Anglia, University Plain, Norwich, UKNR4 7TJ
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Olson JR. Testing fast photochemical theory during TRACE-P based on measurements of OH, HO2, and CH2O. ACTA ACUST UNITED AC 2004. [DOI: 10.1029/2003jd004278] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Affiliation(s)
- Dwayne E Heard
- Department of Chemistry, University of Leeds, Leeds LS2 9JT, U.K.
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Cantrell CA, Edwards GD, Stephens S, Mauldin L, Kosciuch E, Zondlo M, Eisele F. Peroxy radical observations using chemical ionization mass spectrometry during TOPSE. ACTA ACUST UNITED AC 2003. [DOI: 10.1029/2002jd002715] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Christopher A. Cantrell
- Atmospheric Chemistry Division National Center for Atmospheric Research Boulder Colorado USA
| | - G. D. Edwards
- Atmospheric Chemistry Division National Center for Atmospheric Research Boulder Colorado USA
| | - S. Stephens
- Atmospheric Chemistry Division National Center for Atmospheric Research Boulder Colorado USA
| | - L. Mauldin
- Atmospheric Chemistry Division National Center for Atmospheric Research Boulder Colorado USA
| | - E. Kosciuch
- Atmospheric Chemistry Division National Center for Atmospheric Research Boulder Colorado USA
| | - M. Zondlo
- Atmospheric Chemistry Division National Center for Atmospheric Research Boulder Colorado USA
- Now at Southwest Sciences, Inc., Santa Fe, New Mexico, USA
| | - F. Eisele
- Georgia Institute of Technology Atlanta Georgia USA
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15
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Cantrell CA. Peroxy radical behavior during the Transport and Chemical Evolution over the Pacific (TRACE-P) campaign as measured aboard the NASA P-3B aircraft. ACTA ACUST UNITED AC 2003. [DOI: 10.1029/2003jd003674] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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16
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Snow JA. Winter-spring evolution and variability of HOxreservoir species, hydrogen peroxide, and methyl hydroperoxide, in the northern middle to high latitudes. ACTA ACUST UNITED AC 2003. [DOI: 10.1029/2002jd002172] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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17
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Martinez M. OH and HO2concentrations, sources, and loss rates during the Southern Oxidants Study in Nashville, Tennessee, summer 1999. ACTA ACUST UNITED AC 2003. [DOI: 10.1029/2003jd003551] [Citation(s) in RCA: 145] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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18
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Esler JG. An integrated approach to mixing sensitivities in tropospheric chemistry: A basis for the parameterization of subgrid-scale emissions for chemistry transport models. ACTA ACUST UNITED AC 2003. [DOI: 10.1029/2003jd003627] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Mari C, Saüt C, Jacob DJ, Ravetta F, Anderson B, Avery MA, Blake DR, Brune WH, Faloona I, Gregory GL, Heikes BG, Sachse GW, Sandholm ST, Singh HB, Talbot RW, Tan D, Vay S. Sources of upper tropospheric HOxover the South Pacific Convergence Zone: A case study. ACTA ACUST UNITED AC 2002. [DOI: 10.1029/2000jd000304] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Hard TM, George LA, O'Brien RJ. An absolute calibration for gas-phase hydroxyl measurements. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2002; 36:1783-1790. [PMID: 11993877 DOI: 10.1021/es015646l] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We describe a new method of calibrating tropospheric hydroxyl (OH) instruments. Ozone-alkene mixtures produce steady-state OH radical concentrations. The steady state is governed by competition between OH production in the reaction of ozone with the alkene and OH removal by reactions with the alkene, ozone, and the reactor wall. In a flowtube reactor transporting an ozone-alkene mixture, the OH wall loss rate can be measured by varying the alkene concentration. Delivery of the reaction mixture to the sampling entry of an atmospheric OH measurement instrument provides an absolute calibration of the instrument's response to OH. The present precision of calibration is +/-8% (1-sigma), based on reproducibility over a wide range of ozone concentrations. The accuracy (+/-43%) is limited by uncertainties in kinetic rate coefficients and OH yield, which can be improved. The calibration requires no photon flux measurements or lamp-dependent absorption coefficients, which have inherent, variable, systematic uncertainties, and it has been tested in field experiments.
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Affiliation(s)
- Thomas M Hard
- Chemistry Department and Environmental Sciences and Resources Program, Portland State University, Oregon 97207, USA.
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21
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Matsumi Y, Kono M, Ichikawa T, Takahashi K, Kondo Y. Laser-Induced Fluorescence Instrument for the Detection of Tropospheric OH Radicals. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2002. [DOI: 10.1246/bcsj.75.711] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Thornton JA. Ozone production rates as a function of NOxabundances and HOxproduction rates in the Nashville urban plume. ACTA ACUST UNITED AC 2002. [DOI: 10.1029/2001jd000932] [Citation(s) in RCA: 177] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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23
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Kanaya Y. Photochemical ozone production at a subtropical island of Okinawa, Japan: Implications from simultaneous observations of HO2radical and NOx. ACTA ACUST UNITED AC 2002. [DOI: 10.1029/2001jd000858] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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24
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Chapter 14 Chemistry of HOx radicals in the upper troposphere. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s1474-8177(02)80017-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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25
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Tan D, Faloona I, Simpas JB, Brune W, Olson J, Crawford J, Avery M, Sachse G, Vay S, Sandholm S, Guan HW, Vaughn T, Mastromarino J, Heikes B, Snow J, Podolske J, Singh H. OH and HO2in the tropical Pacific: Results from PEM-Tropics B. ACTA ACUST UNITED AC 2001. [DOI: 10.1029/2001jd900002] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Olson JR, Crawford JH, Davis DD, Chen G, Avery MA, Barrick JDW, Sachse GW, Vay SA, Sandholm ST, Tan D, Brune WH, Faloona IC, Heikes BG, Shetter RE, Lefer BL, Singh HB, Talbot RW, Blake DR. Seasonal differences in the photochemistry of the South Pacific: A comparison of observations and model results from PEM-Tropics A and B. ACTA ACUST UNITED AC 2001. [DOI: 10.1029/2001jd900077] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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27
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Wang Y, Liu SC, Wine PH, Davis DD, Sandholm ST, Atlas EL, Avery MA, Blake DR, Blake NJ, Brune WH, Heikes BG, Sachse GW, Shetter RE, Singh HB, Talbot RW, Tan D. Factors controlling tropospheric O3, OH, NOxand SO2over the tropical Pacific during PEM-Tropics B. ACTA ACUST UNITED AC 2001. [DOI: 10.1029/2001jd900084] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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28
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Eisele FL, Mauldin RL, Tanner DJ, Cantrell C, Kosciuch E, Nowak JB, Brune B, Faloona I, Tan D, Davis DD, Wang L, Chen G. Relationship between OH measurements on two different NASA aircraft during PEM Tropics B. ACTA ACUST UNITED AC 2001. [DOI: 10.1029/2000jd900714] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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29
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Faloona I, Tan D, Brune W, Hurst J, Barket D, Couch TL, Shepson P, Apel E, Riemer D, Thornberry T, Carroll MA, Sillman S, Keeler GJ, Sagady J, Hooper D, Paterson K. Nighttime observations of anomalously high levels of hydroxyl radicals above a deciduous forest canopy. ACTA ACUST UNITED AC 2001. [DOI: 10.1029/2000jd900691] [Citation(s) in RCA: 107] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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30
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Kanaya Y, Matsumoto J, Kato S, Akimoto H. Behavior of OH and HO2radicals during the Observations at a Remote Island of Okinawa (ORION99) field campaign: 2. Comparison between observations and calculations. ACTA ACUST UNITED AC 2001. [DOI: 10.1029/2000jd000179] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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31
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Folkins I, Chatfield R. Impact of acetone on ozone production and OH in the upper troposphere at high NOx. ACTA ACUST UNITED AC 2000. [DOI: 10.1029/2000jd900067] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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32
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Jaeglé L, Jacob DJ, Brune WH, Faloona I, Tan D, Heikes BG, Kondo Y, Sachse GW, Anderson B, Gregory GL, Singh HB, Pueschel R, Ferry G, Blake DR, Shetter RE. Photochemistry of HOxin the upper troposphere at northern midlatitudes. ACTA ACUST UNITED AC 2000. [DOI: 10.1029/1999jd901016] [Citation(s) in RCA: 156] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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33
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Thompson AM, Singh HB, Schlager H. Introduction to special section: Subsonic Assessment Ozone and Nitrogen Oxide Experiment (SONEX) and Pollution From Aircraft Emissions in the North Atlantic Flight Corridor (POLINAT 2). ACTA ACUST UNITED AC 2000. [DOI: 10.1029/2000jd900012] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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