Items where Author is "Hewitt, CN"

Journal Article

Hayward, Sean and Tani, Akira and Owen, Sue M. and Hewitt, CN (2004) On-line analysis of volatile organic compound emissions from Sitka spruce (Picea sitchensis). Tree Physiology, 24 (7). pp. 721-728. ISSN 1758-4469

Hewitt, CN and Bunce, R. G. H. and Steinbrecher, R. and Stewart, H. E. (2003) A highly spatially and temporally resolved inventory for biogenic isoprene and monoterpene emissions ' model description and application to Great Britain. Journal of Geophysical Research: Atmospheres, 108 (D20): 4644. ISSN 0747-7309

Owen, S. M. and Mackenzie, A. Robert and Stewart, H. and Donovan, R. and Hewitt, CN (2003) Biogenic volatile organic compound flux from the UK West Midlands urban tree canopy. Ecological Applications, 13 (4). pp. 927-938. ISSN 1051-0761

Tani, Akira and Hayward, S. and Hewitt, CN (2003) Measurement of monoterpenes and related compounds by proton transfer reaction-mass spectrometry. International Journal of Mass Spectrometry, 223/22 (1). pp. 561-78. ISSN 1387-3806

Hewitt, CN and Hayward, S. and Tani, A. (2003) Application of proton transfer reaction mass spectrometry for the monitoring and measurement of volatile organic compounds in the atmosphere. Journal of Environmental Monitoring, 5 (1). pp. 1-7. ISSN 1464-0325

Greenberg, J. and Guenther, A. and Harley, P. and Otter, L. and Veenendahl, E. and Hewitt, CN and James, A. and Owen, S. M. (2003) Eddy flux and leaf-level measurements of biogenic VOC emissions from Mopane woodlands of Botswana. Journal of Geophysical Research: Atmospheres, 108 (D13). pp. 8466-8474. ISSN 0747-7309

Owen, S. M. and Harley, P. and Guenther, A. and Hewitt, CN (2002) Light dependency of VOC emissions from selected Mediterranean plant species. Atmospheric Environment, 36 (19). pp. 3147-3159. ISSN 1352-2310

Tani, A. and Nozoe, S. and Aoli, M. and Hewitt, CN (2002) Monoterpene fluxes measured above a Japanese red pine forest at Oshiba plateau, Japan. Atmospheric Environment, 36 (21). pp. 3391-3402. ISSN 1352-2310

Hayward, S. and Hewitt, CN and Sartin, J. H. and Owen, S. M. (2002) Performance characteristics of a proton transfer reaction-mass spectrometer for measuring volatile organic compounds in ambient air. Environmental Science and Technology, 36 (7). pp. 1554-60. ISSN 0013-936X

Allen, A. G. and Davison, B. M. and James, J. D. and Robinson, L. and Harrison, R. M. and Hewitt, CN (2002) Influence of transport over a mountain ridge on the chemical composition of marine aerosols during the ACE-2 HILLCLOUD experiment. Journal of Atmospheric Chemistry, 41 (1). pp. 83-107. ISSN 0167-7764

Owen, Susan Margaret and Boissard, Christophe and Hewitt, CN (2001) Volatile organic compounds (VOCs) emitted from 40 Mediterranean plant species: VOC speciation and extrapolation to habitat scale. Atmospheric Environment, 35 (32). pp. 5393-5409. ISSN 1352-2310

Boissard, C. and Cao, X.-L. and Juan, C. Y. and Hewitt, CN and Gallagher, M. (2001) Seasonal variations in VOC emission rates from gorse (Ulex europaeus). Atmospheric Environment, 35 (5). pp. 917-927. ISSN 1352-2310

Hewitt, CN (2001) The atmospheric chemistry of sulfur and nitrogen in power plant plumes. Atmospheric Environment, 35 (7). pp. 1155-1171. ISSN 1352-2310

Rose, N. and Derwent, R. G. and Wallis, M. and Hewitt, CN and Stewart, H. (2000) Photochemical generation of secondary particles in the United Kingdom – discussion. Philosophical Transactions of the Royal Society of London A, 358 (1775). pp. 2656-2657. ISSN 0264-3820

Bower, B. K. N. and Choularton, T. W. and Gallagher, M. W. and Beswick, K. M. and Flynn, M. J. and Allen, A. G. and Davison, B. M. and James, J. D. and Robertson, L. and Harrison, R. M. and Hewitt, CN and Cape, J. N. and Mcfadyen, G. G. and Milford, C. and Sutton, M. A. and Martinsson, B. G. and Frank, G. and Swietlicki, E. and Zhou, J. and Berg, O. H. and Mentes, B. and Papaspiropoulos, G. and Hansson, H. C. and Leck, C. and Kulmala, M. and Aalto, P. and Vakeva, M. and Berner, A. and Bizjak, M. and Fuzzi, S. and Laj, P. and Facchini, M. C. and Orsi, G. and Ricci, L. and Nielsen, M. and Allan, B. J. and Coe, H. and Mcfiggans, G. and Plane, J. M. C. and Collett, J. L. and Moore, K. F. and Sherman, D. E. (2000) ACE-2 HILLCLOUD. An overview of the ACE-2 ground-based cloud experiment. Tellus B, 52 (2). pp. 750-778. ISSN 0280-6509

Gallagher, M. W. and Clayborough, R. and Beswick, K. M. and Hewitt, CN and Owen, S. M. and Moncrieff, J. and Pilegaard, K. (2000) Assessment of a relaxed eddy accumulation for measurements of fluxes of biogenic volatile organic compounds: study over arable crops and a mature beech forest. Atmospheric Environment, 34 (18). pp. 2887-2899. ISSN 1352-2310

Pompe, Matevz and Owen, Susan M. and Hewitt, CN and Basa, Helena and Veber, Marjan (2000) Development of a calibration system to evaluate VOC losses in a branch enclosure. Journal of Environmental Monitoring, 2. pp. 133-138. ISSN 1464-0325

Owen, Susan M. and Hewitt, CN (2000) Extrapolating branch enclosure measurements to estimates of regional scale biogenic VOC fluxes in the northwestern Mediterranean basin. Journal of Geophysical Research: Atmospheres, 105 (D9). pp. 11573-11583. ISSN 0747-7309

Harrison, Roy M. and Grenfell, J. Lee and Savage, Nick H. and Allen, Andrew G. and Chemitshaw, Kevin C. and Penkett, Stuart and Hewitt, CN and Davison, Brian (2000) Observations of new particle production in the atmosphere of a moderately polluted site in eastern England. Journal of Geophysical Research: Atmospheres, 105 (D14). pp. 17819-17832. ISSN 0747-7309

James, J. D. and Harrison, Roy M. and Savage, N. H. and Allen, A. G. and Grenfell, J. L. and Allan, B. J. and Plane, J. M. C. and Hewitt, CN and Davison, B. and Robertson, L. (2000) Quasi-Lagrangian investigation into dimethyl sulfide oxidation in maritime air using a combination of measurements and model. Journal of Geophysical Research: Atmospheres, 105 (D21). pp. 26379-26392. ISSN 0747-7309

Putaud, J. P. and Davison, B. M. and Watts, S. F. and Mihalopoulos, N. and Ngygen, B. C. and Hewitt, CN (1999) Dimethyl sulfide and its oxidation products at two sites in Brittany (France). Atmospheric Environment, 33 (4). pp. 647-659. ISSN 1352-2310

Simpson, David and Winiwarter, Wilfried and Borjesson, Gunnar and Cinderby, Steve and Ferreiro, Antonio and Guenther, Alex and Hewitt, CN and Janson, Robert and Khalil, M. Aslam and Owen, Susan and Pierce, Tom E. and Puxbaum, Hans and Shearer, Martha and Skiba, Ute and Steinbrecher, Rainer and Tarrason, Leonor and Oquist, Mats G. (1999) Inventorying emissions from nature in Europe. Journal of Geophysical Research: Atmospheres, 104 (D7). pp. 8113-8152. ISSN 0747-7309

Grenfell, J. L. and Harrison, R. M. and Allen, A. G. and Shi, J. P. and Penkett, S. A. and O’Dowd, C. D. and Smith, M. H. and Hill, M. K. and Robertson, L. and Hewitt, CN and Davison, B. M. and Lewis, A. C. and Creasey, D. J. and Heard, D. E. and Hebestreit, K. and Alicke, B. and James, J. (1999) An analysis of rapid increases in condensation nuclei concentrations at a remote coastal site in western Ireland. Journal of Geophysical Research: Atmospheres, 104 (D11). pp. 13771-13380. ISSN 0747-7309

Wagner, A. and Woodward, F. I. and Mulligan, M. and Hewitt, CN (1998) Vegetation-climate feedbacks in a greenhouse world - discussion. Philosophical Transactions of the Royal Society B: Biological Sciences, 353 (1365). pp. 38-39. ISSN 0962-8436

Stokes, N. J. and Terry, G. T. and Hewitt, CN (1998) The impact of ozone, isoprene and propene on antioxidant levels in two leaf classes of velvet beans (Mucana pruriens L.). Journal of Experimental Botany, 49 (318). pp. 115-123. ISSN 1460-2431

Owen, Susan M. and Boissard, C. and Hagenlocher, B. and Hewitt, CN (1998) Field studies of isoprene emissions from vegetation in the north-western Mediterranean region. Journal of Geophysical Research: Atmospheres, 103 (D19). pp. 25499-25511. ISSN 0747-7309

Hamilton-Taylor, John and Guisti, L. and Davison, William and Tych, Wlodek and Hewitt, CN (1997) Sorption of trace metasl (Cu, Pb, Zn) by suspended lake particles in artificial (0.05 M NaNO3) and natural (Esthwaite Water) freshwaters. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 120 (1-3). pp. 205-219. ISSN 0927-7757

Street, R. A. and Owen, S. and Duckham, S. C. and Boissard, C. and Hewitt, CN (1997) Effect of habitat and age on variations in volatile organic compound (VOC) emissions from Quercus ilex and Pinus pinea. Atmospheric Environment, 31 (Supple). pp. 89-100. ISSN 1352-2310

Cao, X.-L. and Boissard, C. and Juan, A. J. and Hewitt, CN (1997) Biogenic emissions of volatile organic compounds from gorse (Ulex europaeus): branch and canopy scale flux measurements. Journal of Geophysical Research: Atmospheres, 102 (D15). pp. 18903-18915. ISSN 0747-7309

O'Dowd, Colin and Lowe, Jason A. and Smith, Michael H. and Davison, Brian and Hewitt, CN and Harrison, Roy M. (1997) Biogenic sulphur emissions and inferred non-sea-salt-sulphate cloud condensation nuclei in and around Antarctica. Journal of Geophysical Research: Atmospheres, 102 (D11). pp. 12839-12854. ISSN 0747-7309

Schween, J. H. and Dlugi, R. and Hewitt, CN and Foster, P. (1997) Determination and accuracy of VOC fluxes above a pine/oak forest at Castelporziano. Atmospheric Environment, 31 (Supple). pp. 199-216. ISSN 1352-2310

Hewitt, CN and Davison, B. (1997) Field studies of dimethyl sulfide and its oxidation products in the atmosphere. Philosophical Transactions of the Royal Society B: Biological Sciences, 352 (1350). pp. 183-189. ISSN 0962-8436

Street, Rachel A. and Hewitt, CN and Mennicken, Stefan (1997) Isoprene and monoterpene emissions from a eucalyptus plantation in Portugal. Journal of Geophysical Research: Atmospheres, 102 (D13). pp. 15875-15887. ISSN 0747-7309

Owen, S. and Boissard, C. and Street, R. A. and Duckham, S. C. and Csiky, O. and Hewitt, CN (1997) Screening of 18 Mediterranean plant species for volatile organic compound emissions. Atmospheric Environment, 31 (Supple). pp. 101-118. ISSN 1352-2310

Seufert, G. and Bartzis, J. G. and Bomboi-Mingarro, Teresa and Ciccioli, P. and Cieslik, S. and Dlugi, R. and Foster, P. and Hewitt, CN and Kesselmeier, J. and Kotzias, D. and Lenz, R. and Manes, F. and Perez-Pastor, T. and Steinbrecher, R. and Torres, L. and Valentini, R. and Versino, B. (1997) An overview of the Castelporziano experiments. Atmospheric Environment, 31 (Supple). pp. 5-17. ISSN 1352-2310

Davison, Brian M. and O'Dowd, C. D. and Hewitt, CN and Smith, M. H. and Harrison, Roy M. and Peel, D. A. and Wolf, E. and Mulvaney, R. and Schwikowski, M. and Baltenspergert, U. (1996) Dimethyl sulfide and its oxidation products in the atmosphere of the Atlantic and Southern Oceans. Atmospheric Environment, 30 (10-11). pp. 1895-1906. ISSN 1352-2310

Jackson, A. V. and Hewitt, CN (1996) Hydrogen peroxide and organic hydroperoxide concentrations in air in a Eucalyptus forest in central Portugal. Atmospheric Environment, 30 (6). pp. 819-830. ISSN 1352-2310

Davison, Brian M. and Hewitt, CN and O'Dowd, Colin D. and Lowe, Jason A. and Smith, Michael H. and Schwikowski, Margit and Baltensperger, Urs and Harrison, Roy M. (1996) Dimethyl sulfide, methane sulfonic acid and physico-chemical aerosol properties in Atlantic air from the United Kingdom to Halley Bay. Journal of Geophysical Research: Atmospheres, 101 (D17). pp. 22855-22874. ISSN 0747-7309

Beverland, J. I. and Milne, R. and Boissard, C. and O'Neill, D. H. and Moncrieff, J. B. and Hewitt, CN (1996) Measurement of hydrocarbon and carbon dioxide fluxes from a Sitka spruce forest using micrometeorological techniques. Journal of Geophysical Research: Atmospheres, 101 (D17). pp. 22807-22815. ISSN 0747-7309

Terry, G. M. and Stokes, N. J. and Lucas, P. W. and Hewitt, CN (1995) Effects of reactive hydrocarbons and hydrogen-peroxide on antioxidant activity in cherry leaves. Environmental Pollution, 88 (1). pp. 19-26. ISSN 1873-6424

Terry, G. M. and Stokes, N. J. and Hewitt, CN and Mansfield, T. A. (1995) Exposure to isoprene promotes flowering in plants. Journal of Experimental Botany, 46 (10). pp. 1629-1631. ISSN 1460-2431

Davison, W. and Arewgoda, C. M. and Hamilton-Taylor, J. and Hewitt, CN (1994) Kinetics of the dissolution of lead and zinc from rural atmospheric aerosols in freshwater and synthetic solutions. Water Research, 28 (8). pp. 1703-1709.

Cao, Xu-Liang and Hewitt, CN (1994) Study of the Degradation by Ozone of Adsorbents and of Hydrocarbons Adsorbed during the Passive Sampling of Air. Environmental Science and Technology, 28 (5). pp. 757-762. ISSN 0013-936X

Davison, Brian and Hewitt, CN (1994) Elucidation of the tropospheric reactions of biogenic sulfur species from a field measurement campaign in NW Scotland. Chemosphere, 28 (3). pp. 543-557.

Allott, R. W. and Kelly, M. and Hewitt, CN (1994) A model of environmental behaviour of contaminated dust and its application to determining dust fluxes and residence times. Atmospheric Environment, 28 (4). pp. 679-687. ISSN 1352-2310

Giusti, L. and Hamilton-Taylor, J. and Davison, W. and Hewitt, CN (1994) Artefacts in sorption experiments with trace metals. Science of the Total Environment, 152 (3). pp. 227-238. ISSN 1879-1026

Cao, Xu-Liang and Hewitt, CN and Waterhouse, K. S. (1994) Determination of reactive hydrocarbons by capillary gas chromatography with the reduction gas detector. Journal of Chromatography A, 679 (1). pp. 115-121. ISSN 1873-3778

Stokes, Neil J. and Tabner, Brian J. and Hewitt, CN (1994) The determination of hydroxyl radical concentrations in environmental chambers using electron spin resonance. Chemosphere, 28 (5). pp. 999-1008.

Stokes, N. J. and Terry, G. and Tabner, B. J. and Hewitt, CN (1994) The effects of reactive hydrocarbons on plants. Proceedings of the Royal Society of Edinburgh. Section B: Biology, 102. pp. 307-311. ISSN 0269-7270

Cao, X. L. and Hewitt, CN (1994) An exposure system for the calibration of passive samplers to volatile organic compounds at low (PPBV) concentrations. Journal of the Air and Waste Management Association, 44 (11). pp. 1299-1302.

Gardner, B. and Hewitt, CN (1993) The design and application of a novel automated sampler for wet and dry deposition to water surfaces. Science of the Total Environment, 135 (1-3). pp. 55-66. ISSN 1879-1026

Cao, Xu-Liang and Hewitt, CN (1993) Evaluation of tenax-GR adsorbent for the passive sampling of volatile organic compounds at low concentrations. Atmospheric Environment: Part A - General Topics, 27 (12). pp. 1865-1872.

Giusti, L. and Yang, Y-L. and Hewitt, CN and Hamilton-Taylor, J. and Davison, W. (1993) The solubility and partitioning of atmospherically derived trace metals in artificial and natural waters: a review. Atmospheric Environment. Part A. General Topics, 27 (10). pp. 1567-1578.

Stokes, N. J. and Lucas, P. W. and Hewitt, CN (1993) Controlled environment fumigation chambers for the study of reactive air pollutant effects on plants. Atmospheric Environment. Part A. General Topics, 27 (5). pp. 679-684.

Hamilton-Taylor, J. and Yang, Y-L. and Arewgoda, C. M. and Hewitt, CN and Davison, W. (1993) The trace metal dissolution kinetics of three rural atmospheric aerosols in a range of natural fresh water types. Water Research, 27 (2). pp. 243-254.

Davison, W. and Hewitt, CN (1993) Environmental chemistry comes of age. Education in Chemistry, 30. pp. 48-50.

Cao, Xu-Liang and Hewitt, CN (1993) Passive sampling and gas chromatographic determination of low concentrations of reactive hydrocarbons in ambient air with reduction gas detector. Journal of Chromatography A, 648 (1). pp. 191-197. ISSN 1873-3778

Cao, Xu-Liang and Hewitt, CN (1993) Thermal desorption efficiencies for different adsorbate/adsorbent systems typically used in air monitoring programmes. Chemosphere, 27 (5). pp. 695-705.

Rowe, J. E. and Kelly, M. and Hewitt, CN (1993) The occurrence of high indoor radon levels in carboniferous bedrock areas of NW England. Radiation Protection Dosimetry, 46 (3). pp. 201-205. ISSN 1742-3406

Salter, L. and Hewitt, CN (1992) Ozone-hydrocarbon interactions in plants. Phytochemistry, 31. pp. 4045-4050.

Hewitt, CN and Street, R. A. (1992) A qualitative assessment of the emission of non-methane hydrocarbon compounds from the biosphere to the atmosphere in the UK: present knowledge and uncertainties. Atmospheric Environment. Part A. General Topics, 26 (17). pp. 3069-3077.

Allott, R. W. and Kelly, M. R. and Hewitt, CN (1992) Behavior of urban dust contaminated by Chernobyl fallout: environmental half-lives and transfer coefficients. Environmental Science and Technology, 26 (11). pp. 2142-2147. ISSN 0013-936X

Davison, B. and Hewitt, CN (1992) Natural sulphur species from the North Atlantic and their contribution to the United Kingdom sulphur budget. Journal of Geophysical Research: Atmospheres, 97 (D2). pp. 2475-2485. ISSN 2169-897X

Fehsenfeld, Fred and Calvert, Jack and Fall, Ray and Goldan, Paul and Guenther, Alex B. and Hewitt, CN and Lamb, Brian and Liu, Shaw and Trainer, Michael and Westberg, Hal and Zimmerman, Pat (1992) Emissions of volatile organic compounds from vegetation and their implications for atmospheric chemistry. Global Biogeochemical Cycles, 6 (4). pp. 389-430. ISSN 1944-9224

Al-Khayat, T. A. H. and van Eygen, B. and Hewitt, CN and Kelly, M. R. (1992) Modelling and measurement of the dispersion of radioactive emissions from a nuclear fuel fabrication plant in the U.K. Atmospheric Environment: Part A - General Topics, 26 (17). pp. 3079-3087.

Hewitt, CN and Rashed, M. B. (1992) Removal rates of selected pollutants in the runoff waters from a major rural highway. Water Research, 26 (3). pp. 311-319.

Hewitt, CN (1992) Spatial distributions of nitrogen dioxide in an urban area. Atmospheric Environment. Part B. Urban Atmosphere, 25 (3). pp. 429-434.

Cao, Xu-Liang and Hewitt, CN (1992) Trapping efficiencies of capillary cold traps for C2-C10 hydrocarbons. Journal of Chromatography A, 627 (1-2). pp. 219-226. ISSN 1873-3778

Terry, G. and Hewitt, CN (1992) Understanding plant - ozone interactions. Environmental Science and Technology, 26. pp. 1890-1891. ISSN 0013-936X