A national landfill methane budget for Sweden based on field measurements, and an evaluation of IPCC models     

By GUNNAR BÖRJESSON  JERKER SAMUELSSON  JEFFREY CHANTON  ROLF ADOLFSSON  BO GALLE  BO H. SVENSSON 《Tellus. Series B, Chemical and physical meteorology》2009,61(2):424-435

Seven Swedish landfills were investigated from 2001 to 2003. On each landfill, a measure of the total methane production was calculated from data on: (1) methane emissions (leakage); (2) methane oxidation and (3) from gas recovery.
Methane emissions were determined via a tracer gas (N₂O) release-based remote sensing method. N₂O and CH₄ were measured with an Fourier Transform infrared detector at a distance of more than 1 km downwind from the landfills. Methane oxidation in the landfill covers was measured with the stable carbon isotope method. The efficiency in gas recovery systems proved to be highly variable, but on an average, 51% of the produced landfill gas was captured.
A first-order decay model, based on four fractions (waste from households and parks, sludges and industrial waste), showed that the use of a degradable organic carbon fraction (DOCf) value of 0.54, in accordance with the default value for DOCf of 0.50 in the latest IPCC model, gave an emission estimate similar to the official national reports.  相似文献   

Main characteristics of the long-term sea level variability in the Baltic sea   总被引：1，自引：0，他引：1  

MADLEINE SAMUELSSON  ANDERS STIGEBRANDT 《地球，A辑:动力气象学与海洋学》1996,48(5):672-683

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