CO2, CH4 and N2O flux through a Wyoming snowpack and implications for global budgets
Article Abstract:
Natural production and consumption of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) continue in snow-covered alpine and subalpine soils even at temperatures as low as zero degrees Celsius. These three greenhouse gases cause around 70% of predicted yearly global warming. Soil samples from two alpine and two subalpine sites in southeastern Wyoming show that microflora go on emitting CO2 and N20 and absorbing CH4 despite the snow. Similar findings elsewhere in the Northern Hemisphere confirm the soils' effect on atmospheric levels of these gases even under snowpacks.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
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Cool tropical punch of the ice ages
Article Abstract:
Climate model simulations using data from geological archives of tropical sea surface temperature suggest that tropical oceans dynamically affect glacial cycles. Widespread cooling throughout the tropics and subtropics was achieved in the simulations by assuming modern ocean heat transport in combination with glacial boundary conditions such as lowered atmospheric carbon dioxide and large ice sheets. The data imply that the ocean circulation scheme that contributes to deglaciation may also cool the Earth's surface via tropical feedback.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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