Carl-Magnus Mörth, Reiner Giesler, Sandra Fischer
This dataset contains throughfall measurements (representing both dry and wet deposition) and open field measurements (representing bulk precipitation samples) for sulfate, chloride and sulfur isotopic composition (i.e., δ³⁴S-values in SO₄²⁻) at the Lake Gårdsjön F1 control catchment. This includes monthly sampling between 1990 and 1993.
The data was collected to investigate acidification from atmospheric sulfur deposition to the Lake Gårdsjön area and acted as a reference site to the experimental Lake Gårdsjön Rooftop Project (G1 catchment). These measurements have also been used in sulfur isotopic mixing models to derive the presence of freshwater microbial sulfate reduction at Lake Gårdsjön.
Throughfall measurements represent composite values from several funnel collectors, while bulk deposition was only sampled at one location.
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Citation
Carl-Magnus Mörth, Reiner Giesler, Sandra Fischer (2022) Monthly atmospheric deposition of sulfate, chloride and sulfur isotopes at Lake Gårdsjön, southwestern Sweden, 1990 – 1993. Dataset version 1. Bolin Centre Database. https://doi.org/10.17043/morth-2022-gardsjon-1
References
Andersson P, Torssander P, Ingri J (1992) Sulphur isotope ratios in sulphate and oxygen isotopes in water from a small watershed in Central Sweden. Hydrobiologia 235:205 – 217. https://doi.org/10.1007/BF00026213
Grennfelt P, Larsson S, Leyton P, Olsson B (1985) Atmospheric Deposition in the Lake Gårdsjön Area, SW Sweden. Ecological Bulletins 37:101 – 108. http://www.jstor.org/stable/20112939
Torssander P Mörth C-M (1998) Sulfur dynamics in the roof experiment at Lake Gårdsjön deduced from sulfur and oxygen isotope ratios in sulfate. In H. Hultberg & R. Skeffington (eds.) Experimental reversal of acid rain effects: The Gårdsjön Roof Project, pp. 185 – 1206. New York, John Wiley & Sons
Mörth C-M, Torssander P, Kjønaas OJ, Stuanes AO, Moldan F, Giesler R (2005) Mineralization of Organic Sulfur Delays Recovery from Anthropogenic Acidification. Environmental Science & Technology 39(14):5234 – 5240. https://doi.org/10.1021/es048169q
Moldan F, Skeffington RA, Mörth C-M, Torssander P, Hultberg H, Munthe J (2003) Results from the Covered Catchment Experiment at Gårdsjön, Sweden, after Ten Years of Clean Precipitation Treatment. Water, Air, & Soil Pollution 154:371 – 384. https://doi.org/10.1023/B:WATE.0000022968.28717.61
Mörth C-M, Torssander P, Kusakabe M, Hultberg H (1999) Sulfur isotope values in a forested catchment over four years: Evidence for oxidation and reduction processes. Biogeochemistry 44:51 – 71. https://doi.org/10.1023/A:1006030008089
Fischer S, Mörth C-M, Rosqvist G, Giesler R, Jarsjö J (2022) Trends and drivers for microbial sulfate reduction (MSR) in freshwater systems. (manuscript)
Data description
This data is provided in one xlsx spreadsheet file containing the following information:
- Year
- Month
- Day
- Cl⁻ (mg/L)
- SO₄²⁻ (mg/L)
- δ³⁴S in SO₄²⁻ (‰)
- Sample type
- Latitude (WGS84)
- Longitude (WGS84)
Comments
Field sampling followed the methods described in Grennfelt et al. (1985).
Anion concentration was analyzed through Dionex (DX-300) ion chromatography following the method in Andersson et al. (1992) at laboratories at the department of Geological Sciences at Stockholm University, Sweden.
Sulfur isotopic data was analyzed according to the methods in Andersson et al. (1992) at both the Laboratory of Isotope Geology, Museum of Natural History in Stockholm and at the Institute for the Study of the Earth’s Interior at Misasa in Japan, on a VG SIRA 10 mass spectrometer (where SO₂ was collected in glass ampoules prior to isotope analysis in both cases).
The results have partly been published in Mörth et al. (1999) and has further been used in several studies such as Torssander & Mörth (1998), Moldan et al. (2003), Mörth et al. (2005), and Fischer et al. (2022, manuscript).