Atmospheric deposition of sulfur, nitrogen and basic cations onto European forests: observations and model calculations

Ivens W, Tank AK, Kauppi P, & Alcamo J (1989). Atmospheric deposition of sulfur, nitrogen and basic cations onto European forests: observations and model calculations. In: Regional Acidification Models. Eds. Kämäri, J., Brakke, D.F., Jenkins, A., Norton, S.A. & Wright, R.F., pp. 103-111 Germany: Springer Berlin Heidelberg. ISBN 978-3-642-83994-8 DOI:10.1007/978-3-642-83994-8_9.

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Abstract

Measurements of sulfur and nitrogen deposition by means of the throughfall method are compared with model estimates. The sulfur model appears to estimate deposition to deciduous forests very well, but underestimates deposition to conifers by 30 to 40%. The NH4-N deposition to forest is underestimated by the applied model. The model predictions of NO3-N deposition do not show any bias against observations, but are not better correlated with observations than NH4 calculations. Reduced nitrogen compounds are the dominant nitrogen form in throughfall in ammonia polluted areas and contribute up to 50% of the total nitrogen deposition in other areas. Deposition of alkaline material to forests is estimated by applying different methods. Basic cation deposition neutralizes about 31% of the acid sulfur deposition to forest, on the average. Because of the large spatial variability of base cation deposition, it is recommended to develop a model for atmospheric transport and deposition of calcium- and magnesium-bearing particles.

Item Type: Book Section
Research Programs: Environment Program (ENV)
Related URLs:
Depositing User: Romeo Molina
Date Deposited: 22 Apr 2016 12:29
Last Modified: 25 Oct 2017 08:56
URI: http://pure.iiasa.ac.at/12894

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