Quantifying fine-scale variability in pollutant deposition in complex terrain using 210Pb inventories in soil

Fowler, D.; Smith, R.I.; Leith, I.D.; Crossley, A.; Mourne, R.W.; Branford, D.W.; Moghaddam, M.. 1998 Quantifying fine-scale variability in pollutant deposition in complex terrain using 210Pb inventories in soil. In: Wieder, R. Kelman; Novak, Martin; Cerny, Jiri, (eds.) Biogeochemical investigations at the watershed, landscape and regional scales. Dordrecht, The Netherlands, Kluwer, 459-470.

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The accumulation of 210Pb in organic material within the surface (0 to 20 cm depth) horizons of soil is used to quantify local variability in the atmospheric inputs through wet deposition, cloud droplet deposition and dry deposition of aerosols. The method has been applied to quantify the long-term (~50 yr) average enhancement in deposition as a consequence of orographic effects on a 800 m mountain in southwest Scotland. The 210Pb inventory increases by a factor of 2.5 up the hillslope and is comparable to the modeled increase in wet deposition of major ions, and larger than the increase in rainfall with altitude by a factor of two. A second study site examined the increase in deposition beneath a Norway spruce canopy relative to open grassland at an elevation of 450 m in the Scottish Borders. The inventory of 210Pb under the forest canopy exceeded that in the grassland by approximately 35%, in good agreement with deposition estimates obtained from a continuous record of cloud frequency and meteorological variables.

Item Type: Publication - Book Section
Digital Object Identifier (DOI):
Programmes: CEH Programmes pre-2009 publications > Other
UKCEH and CEH Sections/Science Areas: _ Pre-2000 sections
ISBN: 0792351673
Additional Keywords: aerosol deposition, atmospheric deposition, orographic effects, 210Pb, pollutant deposition, Scotland
NORA Subject Terms: Ecology and Environment
Atmospheric Sciences
Date made live: 15 Oct 2007 14:55 +0 (UTC)

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