Not exact matches
Thus,
methane emissions in this region are largely from rice cultivation and livestock, while human - made fertilizers are a major source
of nitrous oxide.
Researchers at Radboud University and the Max Planck Institute for Marine Microbiology in Bremen discovered a microorganism that couples the reduction
of iron to
methane oxidation, and could
thus be relevant in controlling greenhouse gas
emissions worldwide.
Their findings, published March 9 in Proceedings
of the National Academy
of Sciences, show that groundwater from the seasonal thawing
of the «active layer»
of soil above the permafrost adds significantly to the overall concentration
of methane in the lake and
thus influences the
emission of this powerful greenhouse gas to the atmosphere.
Thus, if
emissions of methane to the atmosphere were decreased then concentrations
of methane in the atmosphere would soon begin to decrease.
In a Dot Earth post at the time, I focused on a fascinating case study from BP's gas fields in northern New Mexico, which showed that more careful use
of the plunger systems can greatly cut gas loss (and
thus methane emissions)-- and do so at a profit.
The impact
of policies which involve trade - offs between one GHG and another (such as replacing coal with natural gas, which would reduce CO2 but might increase
methane emissions) is especially uncertain, since current models
of both gases» life - cycles (and
thus their relative GWPs) may need to be revised in the future.
And while making wool requires little energy, it is associated with a lot
of greenhouse gas
emissions because sheep are ruminants (chew the cud) and
thus produce
methane.
Projecting the future water balance and moisture state
of Arctic soils — and
thus the ratio
of CO2 to CH4 production — contributes the largest uncertainty in forecasting
methane emissions from Arctic land surfaces.
I account for the time - dependence
of the ozone response to
methane and CO
emissions, and
thus these are affected by the discount rate and projected GDP and baseline mortality, which are the same as for climate - health impacts.