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Atmospheric Methane: Sources, Sinks, and Role in Global Change

2013-06-29 Science
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Release : 2013-06-29
Genre : Science
Kind : eBook
Book Rating : 05X/5 ( reviews)

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Book Synopsis Atmospheric Methane: Sources, Sinks, and Role in Global Change by : M.A.K. Khalil

Download or read book Atmospheric Methane: Sources, Sinks, and Role in Global Change written by M.A.K. Khalil. This book was released on 2013-06-29. Available in PDF, EPUB and Kindle. Book excerpt: 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 cycles and abundances of many atmospheric trace gases; provides water vapor to the stratosphere; scavenges chlorine atoms from the stratosphere, terminating the catalytic ozone destruction by chlorine atoms, including the chlorine released from the man-made chlorofluorocarbons; produces ozone, CO, and CO2 in the troposphere; and it is an index of life on earth and so is present in greater quantities during warm interglacial epochs and dwindles to low levels during the cold of ice ages. By all measures, methane is the second only to CO2 in causing future global warming. The book presents a comprehensive account of the current understanding of atmospheric methane, and it is an end point for summarizing more than a decade of intensive research on the global sources, sinks, concentrations, and environmental role of methane.

Atmospheric Methane

2013-03-14 Science
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Release : 2013-03-14
Genre : Science
Kind : eBook
Book Rating : 456/5 ( reviews)

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Book Synopsis Atmospheric Methane by : Mohammad Aslam Khan Khalil

Download or read book Atmospheric Methane written by Mohammad Aslam Khan Khalil. This book was released on 2013-03-14. Available in PDF, EPUB and Kindle. Book excerpt: Methane is an important greenhouse gas that can cause global warming. The present concentrations of methane are nearly three times higher than several hundred years ago. Today, more than 60% of the atmospheric methane comes from human activities, including rice agriculture, coal mining, natural gas usage, biomass burning, and raising of cattle. Methane affects the stratospheric ozone layer and the oxidizing capacity of the atmosphere, which in turn control the concentrations of many man-made and natural gases in the atmosphere. This book brings together our knowledge of the trends and the causes behind the increased levels of methane. Based on the scientific information on the sources and sinks, and the role of methane in global warming, strategies to limit emissions can be designed as part of a program to control future global warming.

Atmospheric Methane

1993 Air
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Release : 1993
Genre : Air
Kind : eBook
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Book Synopsis Atmospheric Methane by : Muhammad Ahsan Khan Khalil

Download or read book Atmospheric Methane written by Muhammad Ahsan Khan Khalil. This book was released on 1993. Available in PDF, EPUB and Kindle. Book excerpt:

Improving Characterization of Anthropogenic Methane Emissions in the United States

2018-08-25 Science
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Release : 2018-08-25
Genre : Science
Kind : eBook
Book Rating : 501/5 ( reviews)

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Book Synopsis Improving Characterization of Anthropogenic Methane Emissions in the United States by : National Academies of Sciences, Engineering, and Medicine

Download or read book Improving Characterization of Anthropogenic Methane Emissions in the United States written by National Academies of Sciences, Engineering, and Medicine. This book was released on 2018-08-25. Available in PDF, EPUB and Kindle. Book excerpt: Understanding, quantifying, and tracking atmospheric methane and emissions is essential for addressing concerns and informing decisions that affect the climate, economy, and human health and safety. Atmospheric methane is a potent greenhouse gas (GHG) that contributes to global warming. While carbon dioxide is by far the dominant cause of the rise in global average temperatures, methane also plays a significant role because it absorbs more energy per unit mass than carbon dioxide does, giving it a disproportionately large effect on global radiative forcing. In addition to contributing to climate change, methane also affects human health as a precursor to ozone pollution in the lower atmosphere. Improving Characterization of Anthropogenic Methane Emissions in the United States summarizes the current state of understanding of methane emissions sources and the measurement approaches and evaluates opportunities for methodological and inventory development improvements. This report will inform future research agendas of various U.S. agencies, including NOAA, the EPA, the DOE, NASA, the U.S. Department of Agriculture (USDA), and the National Science Foundation (NSF).

Methane and Climate Change

2010 Nature
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Release : 2010
Genre : Nature
Kind : eBook
Book Rating : 095/5 ( reviews)

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Book Synopsis Methane and Climate Change by : Peter Smith

Download or read book Methane and Climate Change written by Peter Smith. This book was released on 2010. Available in PDF, EPUB and Kindle. Book excerpt: "Methane is a powerful greenhouse gas and is estimated to be responsible for approximately one-fifth of man-made global warming. Per kilogram, it is 25 times more powerful than carbon dioxide over a 100-year time horizon -- and global warming is likely to enhance methane release from a number of sources. Current natural and man-made sources include many where methane-producing micro-organisms can thrive in anaerobic conditions, particularly ruminant livestock, rice cultivation, landfill, wastewater, wetlands and marine sediments. This timely and authoritative book provides the only comprehensive and balanced overview of our current knowledge of sources of methane and how these might be controlled to limit future climate change. It describes how methane is derived from the anaerobic metabolism of micro-organisms, whether in wetlands or rice fields, manure, landfill or wastewater, or the digestive systems of cattle and other ruminant animals. It highlights how sources of methane might themselves be affected by climate change. It is shown how numerous point sources of methane have the potential to be more easily addressed than sources of carbon dioxide and therefore contribute significantly to climate change mitigation in the 21st century."--Publisher's description.

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