Good Agreement Between Modeled and Measured Sulfur and Nitrogen Deposition in Europe, in Spite of Marked Differences in Some Sites
Journal article, 2021

Atmospheric nitrogen and sulfur deposition is an important effect of atmospheric pollution and may affect forest ecosystems positively, for example enhancing tree growth, or negatively, for example causing acidification, eutrophication, cation depletion in soil or nutritional imbalances in trees. To assess and design measures to reduce the negative impacts of deposition, a good estimate of the deposition amount is needed, either by direct measurement or by modeling. In order to evaluate the precision of both approaches and to identify possible improvements, we compared the deposition estimates obtained using an Eulerian model with the measurements performed by two large independent networks covering most of Europe. The results are in good agreement (bias <25%) for sulfate and nitrate open field deposition, while larger differences are more evident for ammonium deposition, likely due to the greater influence of local ammonia sources. Modeled sulfur total deposition compares well with throughfall deposition measured in forest plots, while the estimate of nitrogen deposition is affected by the tree canopy. The geographical distribution of pollutant deposition and of outlier sites where model and measurements show larger differences are discussed.

nitrate

deposition

Europe

forest

sulfur

nitrogen

ammonium

sulfate

Author

Aldo Marchetto

Consiglo Nazionale Delle Richerche

David Simpson

Norwegian Meteorological Institute

Chalmers, Space, Earth and Environment, Microwave and Optical Remote Sensing

Wenche Aas

Norwegian Institute for Air Research (NILU)

H. Fagerli

Norwegian Meteorological Institute

Karin Hansen

Swedish Environmental Protection Agency

Gunilla Pihl-Karlsson

IVL Swedish Environmental Research Institute

P. E. Karlsson

IVL Swedish Environmental Research Institute

Michela Rogora

Consiglo Nazionale Delle Richerche

Tanja G.M. Sanders

Thünen Institute of Forest Ecosystems

Andreas Schmitz

State Agency for Nature, Environment and Consumer Protection of North Rhine-Westphalia

Thünen Institute of Forest Ecosystems

Walter Seidling

Thünen Institute of Forest Ecosystems

Anne Thimonier

Eidgenossische Forschungsanstalt fur Wald, Schnee Und Landschaft Eth-Bereichs

S. Tsyro

Norwegian Meteorological Institute

W. de Vries

Wageningen University and Research

Peter Waldner

Eidgenossische Forschungsanstalt fur Wald, Schnee Und Landschaft Eth-Bereichs

Frontiers in Environmental Science

2296665X (eISSN)

Vol. 9 734556

Subject Categories

Environmental Sciences related to Agriculture and Land-use

Meteorology and Atmospheric Sciences

Physical Geography

DOI

10.3389/fenvs.2021.734556

More information

Latest update

10/22/2021