Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/52317
Title: Time Trends and Seasonal Variation of the Rainwater Chemical Composition in Spain
Authors: Gimeno, Luis
Sánchez, Modesto
Hernández, Emiliano
Cana, Luis 
UNESCO Clasification: 2509 Metereología
Issue Date: 1997
Journal: Journal of the Air and Waste Management Association 
Abstract: A multiple regression model was used to describe temporal variations of the concentrations of H+, SO4 2 -, NO3 - and NH4 + in Spanish rainwater. The model included the effects of linear trend, annual cycle, and precipitation quantity simultaneously. The model fit very well for SO4 2 - and NO3 -, with statistical evidence of annual cycle and effect of precipitation quantity for these two ions and for NH4 +, but not for H+. There is no trend for any ion, with the single exception of a decreasing trend for H+ in one of the stations used
URI: http://hdl.handle.net/10553/52317
ISSN: 1096-2247
DOI: 10.1080/10473289.1997.10463936
Source: Journal of the Air and Waste Management Association [ISSN 1096-2247], v. 47 (7), p. 811-815
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