文章基本信息

标题：Deposition of acidifying and neutralising compounds over the Baltic Sea drainage basin between 1960 and 2006
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作者：Björn Claremar ; Teresia Wällstedt ; Anna Rutgersson 等
期刊名称：Boreal Environment Research
印刷版ISSN：1239-6095
出版年度：2013
卷号：18
期号：6
页码：425-445
语种：English
出版社：Finnish Limnological Society
摘要：This study produced a gridded database of acidifying and eutrophying deposition in the Baltic Sea and its drainage basin for the period 1960–2006. Data from various data sets were combined to generate monthly atmospheric (wet) deposition of cations (Ca2+, Mg2+, Na+, K+ and NH4 +) and anions (SO4 2–, NO3 – and Cl–). Output of a chemical transport model and interpolated measurements were used, and when these were not available, trends and seasonal cycles were constructed from historical emissions and deposition data. These methods lose some spatial patterns, but the mean trends reflect the influence of east-European emissions more than earlier studies with more westerly-centred observations. The calculated depositions of sulphur, nitrogen and calcium (correlated with sulphur emission) increased from 1960 to 1990 and then decreased until 2006. The trend is most evident for sulphur with a 100% increase followed by a 73% decrease.