lec16 - ATM 6, Lecture #16 Acid Rain Part III: Aqueous...

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1 1 ATM 6, Lecture #16 Cort Anastasio Atmospheric Science Program University of California - Davis Acid Rain Part III: Aqueous Formation, Acid Effects and Prognosis 2 Effects of Acid Deposition (I) Damage to Soils • Input of atmospheric acidity (H + ) can cause soil acidification • Effects of this acidification include – Increased weathering of soils increased leaching of metals from soils. – Loss of nutrient metals such as calcium (Ca) and magnesium (Mg) – Increased solubility of toxic metals such as aluminum (Al), cadmium (Cd), and nickel (Ni) • Why do these effects matter? • Soil acidification can also be caused by forestry practices (e.g., clear-cutting in some cases)
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2 3 Effects of Acid Deposition (II) Damage to Forests • Starting in 1970s, widespread forest damage and death (“waldsterben”) noticed in eastern U.S., Germany, east Europe • Originally attributed to acid rain • Currently thought that damage is due – acid deposition –o z o n e – loss of nutrient metals from soil – mobilization of aluminum – ___________________ Dead trees in Shenandoah National Park (photo by Bob Winterbottom) 4 Effects of Acid Deposition (III)
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This note was uploaded on 04/22/2008 for the course ATM 006 taught by Professor Anastasio during the Fall '07 term at UC Davis.

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lec16 - ATM 6, Lecture #16 Acid Rain Part III: Aqueous...

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