Estimating uncertainty in the current critical loads exceedance models.

Smith, R.I.; Hall, J.R.; Howard, D.C.. 1995 Estimating uncertainty in the current critical loads exceedance models. Water, Air and Soil Pollution, 85 (4). 2503-2508.

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The critical loads approach to quantifying areas at risk of damage requires deposition and critical loads data at the same spatial scale to calculate exceedance. While maps of critical loads for soil acidification are available at a 1 km scale no monitoring networks in Europe measure wet and dry inputs at this scale and, further, the models currently used to estimate deposition incorporate a number of assumptions which are not valid at the 1 km scale. Simulations of 1 km deposition from 20 km data show that the uncertainty introduced by using 20 km scale estimates of deposition is small, except in mountain areas where it can give misleading results, but a major problem is the uncertainty in estimates of deposition at the 20 km scale produced by the current models.

Item Type: Publication - Article
Digital Object Identifier (DOI):
Programmes: CEH Programmes pre-2009 publications > Biogeochemistry
UKCEH and CEH Sections/Science Areas: _ Pre-2000 sections
ISSN: 0049-6979
Additional Keywords: critical load, deposition model, spatial scale, uncertainty, probability distribution
NORA Subject Terms: Ecology and Environment
Atmospheric Sciences
Date made live: 22 May 2009 14:50 +0 (UTC)

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