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Methane fluxes from a Swedish landfill determined by geostatistical treatment of static chamber measurements
Linköping University, The Tema Institute, Department of Water and Environmental Studies. Linköping University, Faculty of Arts and Sciences.
Linköping University, The Tema Institute, Department of Water and Environmental Studies. Linköping University, Faculty of Arts and Sciences.
2000 (English)In: Environmental Science and Technology, ISSN 1086-931X, E-ISSN 1520-6912, Vol. 34, no 18, 4044-4050 p.Article in journal (Refereed) Published
Abstract [en]

Methane emissions from a Swedish landfill were measured with a static chamber technique on three occasions during 1997. Methane flux rates ranged from -15.2 x 10-3 to 40 g of CH4 m-2 h-1, and the spatial variability was high (CV = 343-386%). The spatial distribution of the emissions was estimated with the help of ordinary kriging, which is a spatial interpolation method. Three different approaches to estimate the total amounts were used: kriging on logarithm-transformed data, kriging with extremes excluded, and linear interpolation of measurements. These were compared between themselves and with the flux rates measured with a tracer gas technique. While the latter gave an estimate of 41 kg of CH4 h-1 from the landfill (with small variations), the highest possible estimate obtained with static chambers and geostatistical methods was 9.7 kg of CH4 h-1. The conclusion is that static chambers can hardly be trusted for making more than small-scale estimates of landfill gas emissions.Methane emissions from a Swedish landfill were measured with a static chamber technique on three occasions during 1997. Methane flux rates ranged from -15.2 ╫ 10-3 to 40 g of CH4 m-2 h-1, and the spatial variability was high (CV = 343-386%). The spatial distribution of the emissions was estimated with the help of ordinary kriging, which is a spatial interpolation method. Three different approaches to estimate the total amounts were used: kriging on logarithm-transformed data, kriging with extremes excluded, and linear interpolation of measurements. These were compared between themselves and with the flux rates measured with a tracer gas technique. While the latter gave an estimate of 41 kg of CH4 h-1 from the landfill (with small variations), the highest possible estimate obtained with static chambers and geostatistical methods was 9.7 kg of CH4 h-1. The conclusion is that static chambers can hardly be trusted for making more than small-scale estimates of landfill gas emissions.

Place, publisher, year, edition, pages
2000. Vol. 34, no 18, 4044-4050 p.
National Category
Social Sciences Interdisciplinary
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URN: urn:nbn:se:liu:diva-30658DOI: 10.1021/es991350sLocal ID: 16256OAI: oai:DiVA.org:liu-30658DiVA: diva2:251481
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2017-12-13Bibliographically approved

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Danielsson, ÅsaSvensson, Bo

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