The study report on the greenhouse gases and their impact on global warming. Without the greenhouse effect, the earths average surface temperature would be about 60 fahrenheit colder, and our current way of life would be impossible1. The sun powers earths climate, radiating energy at very short wavelengths, predominately in the visible or nearvisible e. To lessen those longterm effects, many nations, communities, and individuals are taking action now to reduce greenhouse gas emissions and slow global warming by reducing dependence on fossil fuels, increasing the use of renewable energy, expanding forests, and making lifestyle choices that help to sustain the environment. Greenhouse gases have many direct and indirect effects on climate change. The main greenhouse gases are carbon dioxide co2, methane ch4 and nitrous oxide. In terms of global climate change, greenhouse gases play an active role in altering the earths climate. The physics of the greenhouse effect and the concept of greenhouse gases are presented. It is agreed, however, that all the greenhouse gases trap heat and raise the global temperature.
Main greenhouse gases multiple gases contribute to the greenhouse effect that sets earths temperature over geologic time. Past releases of these gases are less well documented. Small changes in the atmospheric concentration of these gases can lead to changes in temperature that make the difference between ice ages when mastodons roamed the earth, and the sweltering heat in which the dinosaurs lived. Greenhouse gas basics msu college of agriculture and. As greenhouse gas emissions from human activities increase, they build up in the atmosphere and warm the climate, leading to many other changes around the worldin the atmosphere, on land, and in the oceans. Because of its low concentration level in the atmosphere, it is not currently believed to have a significant radiative forcing effect, which leads to rising global temperatures. Pdf the greenhouse effect and its impacts on environment. Greenhouse gases include water vapor, co2, methane. Atmospheric concentrations of greenhouse gases are increasingly well known. Current concentrations, emission accumulation rates, and atmospheric lifetimes of key gases are summarized in table 3.
Pdf the greenhouse effect is a leading factor in keeping the earth warm because it keeps some of the planets heat that would otherwise. What are greenhouse gases and the greenhouse effect. Greenhouse gases include water vapor, co2, methane, nitrous oxide n2o and other gases. Without the greenhouse effect the earths average global temperature would be much colder and life on earth as we know it would be impossible. Cf4 is a strong greenhouse gas that contributes to climate change and has an atmospheric lifetime of 50,000 years. Pdf the buildup of so called greenhouse gases in the atmosphere co2 in particular appears to be having an adverse impact on the global. Main greenhouse gases center for climate and energy. The concepts of radiative forcing of climate change and global. The kyoto protocol mandates the regulation of six greenhouse. Effects of greenhouse gases on climate change earth eclipse. The indicators in other chapters of this report illustrate many of these changes. The concepts of radiative forcing of climate change and global warming. The greenhouse effect is the rise in temperature that the earth experiences because certain gases in the atmosphere water vapor, carbon dioxide, nitrous oxide. Species mixing ratio source water vapour 10,000 to 2 ppmv natural methane 1.