Methane and carbon dioxide flux from ponds and lakes of the Hudson Bay Lowlands. Impact of a global warming on biospheric sources of methane and its climatic consequences, Tellus 35B:1–7. Biological methanogenesis and the CO 2 greenhouse effect. Three-dimensional model synthesis of the global methane cycle. Micrometeorological measurements of CH 4 and CO 2 exchange between the atmosphere and the arctic tundra, J. Eddy correlation measurements of methane fluxes using a tunable diode laser at the Kinosheo Lake tower site during the Northern Wetlands Experiment. dissertation, University of Minnesota.Įdwards, G., H.H. Methane emission from peatlands in northern Minnesota, Ph.D. Winter fluxes of methane from Minnesota peatlands. Methane emission from Minnesota peatlands: Spatial and seasonal variability. Productivity of Sphagnum (Bog-moss) and peat accumulation. Methane consumption in aerated soils of the temperate zone. Methane emissions from tundra environments in the Yukon-Kuskokwim Delta, Alaska. This process is experimental and the keywords may be updated as the learning algorithm improves.īartlett, K.B., P.M. These keywords were added by machine and not by the authors. (2) Our preliminary modeling of the sensitivity of methane flux from northern wetlands to variability in temperature indicates that feedbacks from this source are unlikely to significantly influence rates of climate change during the initial stages of a global warming. Some important wetland regions have not been surveyed for methane emissions (e.g., the Siberian Lowlands) further progress on defining global emissions from northern wetlands awaits field data from these areas. The relative influence of these soil climate parameters is quite variable from one region to another, as is the magnitude of the net emission rate to the atmosphere. Our conclusions are as follows: (1) Methane emissions from northern wetlands are dependent on both soil moisture and temperature. In this chapter we review progress on measuring methane emissions from northern wetlands and, through a model, estimate emission variability in relation to one component of climate variability. Methane emissions from northern high-latitude wetlands are an important consideration for understanding past, present, and future atmospheric concentrations of this important greenhouse gas.
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