Methane (CH
4) is one of the most relevant greenhouse gases and it has a global warming potential 25 times greater than that of carbon dioxide (CO
2), risking human health and the environment. Microbial CH
4 oxidation in landfill cover soils may constitute a means of controlling CH
4 emissions. The study was intended to quantify CH
4 and CO
2 emissions rates at the Sungai Sedu open dumping landfill during the dry season, characterize their spatial and temporal variations, and measure the CH
4 oxidation associated with the landfill cover soil using a homemade static flux chamber. Concentrations of the gases were analyzed by a Micro-GC CP-4900. Two methods, kriging values and inverse distance weighting (IDW), were found almost identical. The findings of the proposed method show that the ratio of CH
4 to CO
2 emissions was 25.4 %, indicating higher CO
2 emissions than CH
4 emissions. Also, the average CH
4 oxidation in the landfill cover soil was 52.5 %. The CH
4 and CO
2 emissions did not show fixed-pattern temporal variation based on daytime measurements. Statistically, a negative relationship was found between CH
4 emissions and oxidation (
R 2?=?0.46). It can be concluded that the variation in the CH
4 oxidation was mainly attributed to the properties of the landfill cover soil.
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