Journal ArticleDOI
Factor analysis of trends in Texas acidic deposition
TLDR
In this article, a trend analysis was performed on the logarithm of the monthly averages at the Longview and Victoria sites, the two sites with the largest and most complete data collected between 1980 and 1987 for 11 NADP/NTN sites in Texas.About:
This article is published in Atmospheric Environment. Part A. General Topics.The article was published on 1992-04-01. It has received 42 citations till now.read more
Citations
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Journal ArticleDOI
Source identification of bulk wet deposition in Finland by positive matrix factorization
TL;DR: In this paper, a positive matrix factorization (PMF) was applied to a Finnish data set (18 years, 15 locations) of monthly bulk wet deposition concentrations of strong acids, SO4, NO3, NH4, total nitrogen (Ntot), total phosphorus (Ptot) and total organic carbon (TOC).
Journal ArticleDOI
Chemical composition of rainwater in Eastern France
TL;DR: In this paper, the major elements are SO 4 2− and Cl − for the anions and NH 4 + and Ca 2+ for the cations, and the major ion concentrations are higher in urban areas, especially at Colmar (no.2), where rainfall amounts are low.
Journal ArticleDOI
Analysis of daily precipitation data by positive matrix factorization
Sirkka Juntto,Pentti Paatero +1 more
TL;DR: The aim of the analysis was to investigate the structure of the data matrices in order to find the apparent source profiles from which the precipitation samples are constituted, and the strongest factor found was that of sea-salt.
Journal ArticleDOI
Changes in sulfate deposition in eastern USA following implementation of Phase I of Title IV of the Clean Air Act Amendments of 1990
TL;DR: In this article, the Clean Air Act Amendments of 1990 (CAAA) was implemented on 1 January 1995, and the phase I restrictions were imposed on sulfur dioxide emissions from 110 coal-fired electric utility plants (263 units) in 21 states of which 17 are east of the Mississippi River.
Journal ArticleDOI
Characterization of precipitation at Agra
TL;DR: In this paper, the authors studied the precipitation at Agra city during July-September 1991 and found that only 10 percentile of the values in the rainwater samples correspond to local soil and the rest could be attributed to transported soil.
References
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Book
Applied Regression Analysis
Norman R. Draper,Harry Smith +1 more
TL;DR: In this article, the Straight Line Case is used to fit a straight line by least squares, and the Durbin-Watson Test is used for checking the straight line fit.
Book
Applied Multivariate Statistical Analysis
R. A. Johnson,Dean W. Wichern +1 more
TL;DR: In this article, the authors present an overview of the basic concepts of multivariate analysis, including matrix algebra and random vectors, as well as a strategy for analyzing multivariate models.
Journal ArticleDOI
Applied Multivariate Statistical Analysis.
TL;DR: In this article, the authors present an overview of the basic concepts of multivariate analysis, including matrix algebra and random vectors, as well as a strategy for analyzing multivariate models.
Journal ArticleDOI
Acid precipitation: natural versus anthropogenic components.
TL;DR: An analysis of precipitation data indicates that many areas of eastern North America receive precipitation with substantially greater H+, SO42-, and NO3- concentrations than remote areas.