Trends in air concentration and deposition at background monitoring sites in Sweden - major inorganic compounds heavy metals and ozone
| Autor: | Kindbom, Karin, Pihl Karlsson, Gunilla, Svensson, Annika, Sjöberg, Karin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2001 |
| Předmět: |
Bly
chloride air Luftföroreningar Kadmium biota Kalium precipitation Kvävedioxid Depositioner soot deposition farming nitrogen Aspvreten mosses Nickel Rörvik Magnesium Hoburgen heavy metals acidity Bredkälen Kvicksilver Sulfat Kalcium Årlig variation health Sot Mann Kendall test Vavihill time trend Natrium ozone Arsenik linear regression Nitrat sulphur base cations environment Svaveldioxid Ammonium |
| Popis: | This report describes concentrations in air of sulphur compounds, soot, nitrogen compounds and ozone in Sweden between 1985-1998. Time trends of concentration in precipitation and deposition of sulphate, nitrate, ammonium, acidity, base cations and chloride in six different regions covering Sweden are evaluated during the period 1983-1998. Trends of heavy metals in precipitation have been analysed for the period 1983-1998 and the change in heavy metal concentration, 1975-1995, in mosses is described. Data used in the trend analyses originates from measurements performed at six Swedish EMEP stations and from approximately 25 stations within the national Precipitation Chemistry Network. Two different statistical methods, linear regression and the non-parametric Mann Kendall test, have been used to evaluate changes in annual mean values This report describes concentrations in air of sulphur compounds, soot, nitrogen compounds and ozone in Sweden between 1985-1998. Time trends of concentration in precipitation and deposition of sulphate, nitrate, ammonium, acidity, base cations and chloride in six different regions covering Sweden are evaluated during the period 1983-1998. Trends of heavy metals in precipitation have been analysed for the period 1983-1998 and the change in heavy metal concentration, 1975-1995, in mosses is described. Data used in the trend analyses originates from measurements performed at six Swedish EMEP stations and from approximately 25 stations within the national Precipitation Chemistry Network. Two different statistical methods, linear regression and the non-parametric Mann Kendall test, have been used to evaluate changes in annual mean values |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|