Výsledky vyhledávání - "G. W. Campbell"

Trends in sulphate and nitrate wet deposition over the United Kingdom: 1986–1999

Autor: Keith Vincent, James G. Irwin, G. W. Campbell

Publikováno v: Atmospheric Environment. 36:2867-2879

Since 1986 annual wet deposition of non-sea-salt sulphur has decreased over all regions of the United Kingdom, with the largest decrease in eastern areas. Nationally wet deposited sulphur has decreased by about one-third compared with an approximatel

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::81b9dba56727276bf09bc14d599be883
https://doi.org/10.1016/s1352-2310(02)00096-1

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Regional mass budgets of oxidized and reduced nitrogen and their relative contribution to the nitrogen inputs of sensitive ecosystems

Autor: G. W. Campbell, C.E.R. Pitcairn, David Fowler, John R. Stedman, Mark A. Sutton, Ron Smith, Mhairi Coyle

Publikováno v: Environmental Pollution. 102:337-342

Wet deposition of nitrogen is reasonably well monitored throughout Europe, whereas the dry deposition inputs are provided largely by models. Recent long-term measurements of NO2 and NH3 fluxes to semi-natural vegetation have shown that rates of NH3 d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9e1cba325fbadd86415833876c96b0b7
https://doi.org/10.1016/s0269-7491(98)80052-3

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New high resolution maps of estimated background ambient NOx and NO2 concentrations in the U.K

Autor: Keith Vincent, John R. Stedman, Justin W.L. Goodwin, G. W. Campbell, Clare E.H. Downing

Publikováno v: Atmospheric Environment. 31:3591-3602

Maps of estimated annual mean background surface concentrations of NOx and NO2 in the U.K. have been calculated on 1 km x 1 km grid for 1994. These maps have been calculated using a multi-stage approach which includes the interpolation of rural measu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8747607eb9405289656020920b947099
https://doi.org/10.1016/s1352-2310(97)00159-3

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Spatial analysis and mapping the annual mean concentrations of acidity and major ions in precipitation over the United Kingdom in 1986

Autor: Richard Webster, G. W. Campbell, J. G. Irwin

Publikováno v: Environmental monitoring and assessment. 16(1)

The composition of precipitation is being monitored in collectors sited throughout the United Kingdom. In the first year, 1986, hydrogen ion, nitrate, ammonium and non-marine sulphate were measured in samples from 47 sites and annual mean concentrati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f6110b7faa2b0ea3fef17f3506741ba9
https://pubmed.ncbi.nlm.nih.gov/24241773

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Atmospheric deposition of sulphur and nitrogen species in the U.K

Autor: David S. Lee, G. W. Campbell

Publikováno v: Freshwater Biology. 36:151-167

1. The foundations of our understanding of acid deposition were laid in the last century, but the scale and scope of damage to sensitive receptors has only been subject to intensive investigation over the last 30 years or so. Negotiations are now wel

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a4b2daf6baedd6932f4159a6645e85d9
https://doi.org/10.1046/j.1365-2427.1996.00076.x

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Wet deposition of non sea-salt sulphate in the United Kingdom: The influence of natural sources

Autor: J. R. Stedman, G. W. Campbell, N. C. Mcardle

Publikováno v: Water, Air, & Soil Pollution. 85:1941-1948

Because of its position to the west of Europe, much of the wet sulphur deposition in the west of the UK is background in the sense that it is not attributable to pollutants emitted within Europe less than four days previously. There are both natural

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d9440cedbe166635e0621f0b633b4b79
https://doi.org/10.1007/bf01186118

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Measurements of precipitation composition at UK EMEP sites 1987?1992 and comparison with the HARM model

Autor: John R. Stedman, G. W. Campbell, Sarah E. Metcalfe, J. D. Whyatt

Publikováno v: Water, Air, & Soil Pollution. 85:1961-1966

Precipitation composition has been measured daily at five UK EMEP sites since 1987. Sulphur dioxide and sulphate aerosol concentrations are also measured daily at the sites. Back trajectories and wind sectors calculated by the Norwegian Meteorologica

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8ab40fa24a520b7609ba147851af520c
https://doi.org/10.1007/bf01186121

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Trends in wet and dry deposition of sulphur in the United Kingdom

Autor: David Fowler, Keith Vincent, Ron Smith, C. Downing, G. W. Campbell

Publikováno v: Water, Air, & Soil Pollution. 85:659-664

UK data on sulphur deposition trends between the 1960's and 1990's are presented. Long term data sets of sulphur dioxide (SO2) concentrations at two sites have been analysed and dry deposition determined using a resistance model. Wet deposition has b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5429ffbf8fc04754c8a7fc082522f0e7
https://doi.org/10.1007/bf00476904

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