How carbon causes global warming | Science | The Guardian
What Is Energy? Global carbon dioxide emissions and atmospheric concentrations (anthropogenic) greenhouse gas emissions were carbon dioxide (CO2) Collectively, this is commonly referred to as climate change. Climate Change Indicators: Greenhouse Gases Carbon dioxide accounts for most of the nation's emissions and most of the increase since which describe the effects that occur over a period of years after a of total greenhouse gas emissions for all man-made sources in the United States. The Effect of Greenhouse Gases on Climate Change Around 75 percent of man-made carbon dioxide emissions during the past 20 years.
What is climate change ? :: Environmental Protection Agency, Ireland
Atmospheric Concentrations of Greenhouse Gases. Concentrations of carbon dioxide and other greenhouse gases in the atmosphere have increased since the beginning of the industrial era.
Almost all of this increase is attributable to human activities. An increase in the atmospheric concentrations of greenhouse gases produces a positive climate forcing, or warming effect.
The warming effect associated with carbon dioxide alone increased by 30 percent.
Major Long-Lived Greenhouse Gases and Their Characteristics Greenhouse gas Average lifetime in the atmosphere year global warming potential Carbon dioxide Emitted primarily through the burning of fossil fuels oil, natural gas, and coalsolid waste, and trees and wood products.
Changes in land use also play a role. Deforestation and soil degradation add carbon dioxide to the atmosphere, while forest regrowth takes it out of the atmosphere.
Climate Change Indicators: Greenhouse Gases
Methane emissions also result from livestock and agricultural practices and from the anaerobic decay of organic waste in municipal solid waste landfills. These gases are emitted from a variety of industrial processes and commercial and household uses and do not occur naturally. Sometimes used as substitutes for ozone-depleting substances such as chlorofluorocarbons CFCs.
Some of the excess carbon dioxide is absorbed quickly for example, by the ocean surfacebut some will remain in the atmosphere for thousands of years, due in part to the very slow process by which carbon is transferred to ocean sediments.
Greenhouse Gas Emissions indicator come from the national inventory.
This report tracks trends in total annual U. EPA uses national energy data, data on national agricultural activities, and other national statistics to provide a comprehensive accounting of total greenhouse gas emissions for all man-made sources in the United States. Generally, facilities that emit more than 25, metric tons of carbon dioxide equivalents per year are required to report.
The program also collects data from entities known as "suppliers" that supply certain fossil fuels and industrial gases that will emit greenhouse gases into the atmosphere if burned or released—for example, refineries that supply petroleum products such as gasoline.
The Greenhouse Gas Reporting Program only requires reporting; it is not an emissions control program. This program helps EPA and the public understand where greenhouse gas emissions are coming from, and will improve our ability to make informed policy, business, and regulatory decisions.
- How carbon causes global warming
- Overview of Greenhouse Gases
- Irreversible climate change due to carbon dioxide emissions
Larger image to save or print. The main human activity that emits CO2 is the combustion of fossil fuels coal, natural gas, and oil for energy and transportation, although certain industrial processes and land-use changes also emit CO2. The main sources of CO2 emissions in the United States are described below. Electricity is a significant source of energy in the United States and is used to power homes, business, and industry. The type of fossil fuel used to generate electricity will emit different amounts of CO2.
This category includes transportation sources such as highway vehicles, air travel, marine transportation, and rail.Neil DeGrasse Tyson's Simple Explanation of Climate Change
Note that many industrial processes also use electricity and therefore indirectly cause the emissions from the electricity production. However, emissions and removal of CO2 by these natural processes tend to balance. Since the Industrial Revolution began aroundhuman activities have contributed substantially to climate change by adding CO2 and other heat-trapping gases to the atmosphere.
In the United States, sincethe management of forests and other land has acted as a net sink of CO2, which means that more CO2 is removed from the atmosphere, and stored in plants and trees, than is emitted.
Irreversible climate change due to carbon dioxide emissions
Since the combustion of fossil fuel is the largest source of greenhouse gas emissions in the United States, changes in emissions from fossil fuel combustion have historically been the dominant factor affecting total U. Changes in CO2 emissions from fossil fuel combustion are influenced by many long-term and short-term factors, including population growth, economic growth, changing energy prices, new technologies, changing behavior, and seasonal temperatures.
Between andthe increase in CO2 emissions corresponded with increased energy use by an expanding economy and population, an overall growth in emissions from electricity generation, and increased demand for travel.
Reducing Carbon Dioxide Emissions The most effective way to reduce CO2 emissions is to reduce fossil fuel consumption.