Atmospheric Methane: Trends and Impacts

  title={Atmospheric Methane: Trends and Impacts},
  author={Donald J. Wuebbles and Katharine Hayhoe},
The concentration of methane (CH4), the most abundant organic trace gas in the atmosphere, has increased dramatically over the last few centuries, more than doubling its concentration. Increasing concentrations of methane are of special concern because of their effects on climate and atmospheric chemistry. On a per molecule basis, additional methane is much more effective as a greenhouse gas than additional CO2. Methane is also important to both tropospheric and stratospheric chemistry. Here… 
Volcanogenic sulfate and fluoride deposition : effects on organic and mineral soil gas fluxes and chemistry
This thesis focuses on the environmental effects of volcanic eruptions such as Eyjafjallajokull (2010) from which volcanic gases and ash particles can impact upon ecosystems located thousands of
The Distribution of Dissolved Methane and Its Air-Sea Flux in the Plume of a Seep Field, Lingtou Promontory, South China Sea
Methane (CH4), the most abundant hydrocarbon gas in the atmosphere, plays an important role in global climate change. Quantifying the dissolved methane and its air-sea flux from hydrocarbon seeps is
The Relationship between the Decline of Oxygen and the Increase of Methane Gas (CH4) Emissionson the Environment Health of the Plant
The combustion of low grade coal for the power plant activity will decrease the concentration of oxygen and increase the CH4 gas emissions in the atmosphere that can damage the health of the plants and it can even cause death.
Continuous Measurements of Greenhouse Gases and Atmospheric Oxygen in the Namib Desert
A new, near-coastal background site was established for observations of greenhouse gases (GHGs) and atmospheric oxygen in the central Namib Desert near Gobabeb, Namibia. The location of the site
Methane : its role in climate change and options for control
This study on CH 4 , (its role in climate change and options for control), aimed at a scenario analysis to assess future climate change under reduced methane emissions. At the same time improving the
Arctic Air Pollution
The Arctic is a sentinel of global change. This region is influenced by multiple physical and socio-economic drivers and feedbacks, impacting both the natural and human environment. Air pollution is
Arctic air pollution: Challenges and opportunities for the next decade
The Arctic is a sentinel of global change. This region is influenced by multiple physical and socio-economic drivers and feedbacks, impacting both the natural and human environment. Air pollution is
Characterization model to assess ocean acidification within life cycle assessment
PurposeOcean acidification due to the absorption of increasing amounts of atmospheric carbon dioxide has become a severe problem in the recent years as more and more marine species are influenced by
CH4 continuous measurements in the upper Spanish plateau
The diurnal and seasonal patterns of the overall data set and background concentrations have shown that CH4 concentrations are mainly dominated by its reaction with OH radicals, and were associated to the concentrations recorded in the remaining un-disturbed sectors.


Atmospheric Methane: Sources, Sinks, and Role in Global Change
  • M. Khalil
  • Environmental Science
    NATO ASI Series
  • 1993
Methane plays many important roles in the Earth's environment. It is a potent "greenhouse gas" that warms the Earth, controls the oxidizing capacity of the atmosphere (OH) indirectly affecting the
Trace gas trends and their potential role in climate change
It is pointed out that the release of chemicals into the atmosphere has grown greatly over the last 50 years. Contributed to the observed perturbations of trace chemicals in the atmosphere have an
Future atmospheric methane concentrations in the context of the stabilization of greenhouse gas concentrations
Tropospheric CH4 concentration depends, according to modeled tropospheric processes, on many factors, including emissions of CH4 as well as NOx and CO. Illustrative analyses of the relation between
The Potential effects of increased methane on atmospheric ozone
Using a one dimensional atmospheric model, we investigate the possible influence of an increase in atmospheric methane on ozone. The couplings between methane and the catalytic destruction of ozone
Biogeochemical aspects of atmospheric methane
Methane is the most abundant organic chemical in Earth's atmosphere, and its concentration is increasing with time, as a variety of independent measurements have shown. Photochemical reactions
Atmospheric CH4, CO and OH from 1860 to 1985
Atmospheric methane, CO and the gaseous OH radical are interdependent: if CH4, CO or OH is perturbed, background concentrations of the other two constituents are affected. Perturbations to OH alter
Effect of ozone depletion on atmospheric CH4 and CO concentrations
GLOBAL surface-based measurements of atmospheric methane and carbon monoxide concentrations revealed a marked and unex-pected decrease in their growth rates in 1991 and 1992, particularly in the
Climate effects of atmospheric methane
The regulation of methane oxidation in soil.
  • R. Mancinelli
  • Environmental Science
    Annual review of microbiology
  • 1995
Obtaining a better understanding of the ecology of methanotrophs will help elucidate the mechanisms that regulate soil methane oxidation, and help identify the factors influencing the flux of methane into the atmosphere.
Continuing decline in the growth rate of the atmospheric methane burden
The global atmospheric methane burden has more than doubled since pre-industrial times,, and this increase is responsible for about 20% of the estimated change in direct radiative forcing due to