For more than 20 years the global emissions and the lifetime of methane have probably been constant, so the buildup of methane in the atmosphere has been slowing down for as long. During this time, there have been periodic events occurring every seven to eight years, when global methane concentrations increased by some 10 ppb and later fell back, in some cases due to temporary increases of emissions from the northern tropics that spread to the global scale. These conclusions are derived from the accumulated global observations that now span 23 years and define the role of human activities in the recent cycle of atmospheric methane.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/es061791t | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Quantitative analysis of amino acid excretion by Methanothermobacter marburgensis under N-fixing conditions.
Sci Rep
January 2025
Archaea Physiology & Biotechnology Group, Department of Functional and Evolutionary Ecology, University of Vienna, Wien, Austria.
Methanogenic archaea (methanogens) possess fascinating metabolic characteristics, such as the ability to fix molecular nitrogen (N). Methanogens are of biotechnological importance due to the ability to produce methane (CH) from molecular hydrogen (H) and carbon dioxide (CO) and to excrete proteinogenic amino acids. This study focuses on analyzing the link between biological methanogenesis and amino acid excretion under N-fixing conditions.
View Article and Find Full Text PDFRecent Advances of Gaseous Pollutant Catalytic Oxidation over Precious Metal Catalysts with SO Exposure.
Environ Sci Technol
January 2025
Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Technology, Tianjin University, Tianjin 300350, China.
Precious metal catalysts are widely used for catalytic oxidation of various gaseous pollutants (CO, methane, and VOCs) due to their excellent catalytic activity. However, they are easily affected by SO and deactivated in actual industrial waste gas or motor vehicle exhaust. Therefore, this review systematically summarizes the representative studies of gaseous pollutant catalytic oxidation over precious metal catalysts with SO exposure.
View Article and Find Full Text PDFAnalysis and prediction of atmospheric ozone concentrations using machine learning.
Front Big Data
January 2025
Climate and Environmental Physics, Physics Institute, University of Bern, Bern, Switzerland.
Atmospheric ozone chemistry involves various substances and reactions, which makes it a complex system. We analyzed data recorded by Switzerland's National Air Pollution Monitoring Network (NABEL) to showcase the capabilities of machine learning (ML) for the prediction of ozone concentrations (daily averages) and to document a general approach that can be followed by anyone facing similar problems. We evaluated various artificial neural networks and compared them to linear as well as non-linear models deduced with ML.
View Article and Find Full Text PDFAssessing the sustainable development in the European Union: influence of municipal waste, industrial waste, and waste related patents.
Integr Environ Assess Manag
January 2025
Department of Economics, Hatay Mustafa Kemal University, Hatay, Turkey.
Waste has emerged as a pressing concern for the environment, primarily stemming from the processes of urbanization and industrialization. The substantial volumes of waste generated pose a serious threat to the environment, as they spread out harmful substances in the soil and release methane emissions into the atmosphere. To effectively address this issue, this study explores the impact of municipal and industrial waste, as well as waste-related innovation on the load capacity factor (LCF) from 2005 to 2020.
View Article and Find Full Text PDFRevising the coal mining CH emission factor based on multiple inventories and atmospheric inversion approach at one of the world's largest coal production areas: Shanxi province, China.
Sci Total Environ
January 2025
College of Ecology and Environment, Joint Center for sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China; Yale-NUIST Center on Atmospheric Environment, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science & Technology, Nanjing 210044, China. Electronic address:
Methane (CH) emissions from the coal industry represent a substantial portion of anthropogenic CH emissions from energy-related activities. China ranks as the world's largest coal producer, where Shanxi Province is one of its major coal production regions and accounts for 20.7 % of the national total coal production.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!