Acid Deposition

Address of Welcome.- Acid deposition — The present situation in Europe.- Effects of acid deposition.- Remarks on the paper by Professor Ulrich on “Effects of acid deposition”.- Answer to the remarks of Mr. Zimmermeyer.- Characterization of acidity in natural waters.- Formation of atmospheric acidity.- Background precipitation acidity.- Trends in the acidity of rain in Europe: a re-examination of European atmospheric chemistry network data.- Trend development of precipitation-pH in Central Europe.- Acid precipitation over The Netherlands.- Investigation of the source regions for acid deposition in The Netherlands.- Wet and dry deposition of acidic and heavy metal components in the Federal Republic of Germany.- Heavy elements in acid rain.- Acidic input to a beech and spruce forest.- Field measurements of NO and NO2 fluxes to and from the ground.- Studies of the acidity and chemical composition of clouds.- Preliminary measurements from an aircraft into the chemical composition of clouds.- Model calculations of the effect of SO2, NOX or HC emission changes on regional scale sulphate and nitrate production.- Workshop conclusions.- List of Participants.- Index of Authors.