AllFreePapers.com - All Free Papers and Essays for All Students
Search

Global Climatic Change

Autor:   •  February 16, 2013  •  Essay  •  545 Words (3 Pages)  •  1,363 Views

Page 1 of 3

Global climate change is the significant and lasting change in the statistical distribution of weather patterns over periods ranging from decades to millions of years. It may be a change in average weather conditions, or in the distribution of weather around the average conditions that is caused by factors however this essay mainly focuses on the human-induced alterations.

Human industrial activities contributing to the amount of "greenhouse gases" naturally present in the atmosphere. The increase in CO2 levels due to emissions from fossil fuel combustion, followed by aerosols (particulate matter in the atmosphere) and cement manufacture contributes to global climatic change. Other factors, including land use, ozone depletion, animal agriculture and deforestation, are also of concern in the roles they play - both separately and in conjunction with other factors - in affecting climate, microclimate, and measures of climate variables.

In several parts of the world, the amounts of carbon dioxide, methane and other greenhouse gases in the atmosphere has increased somewhat. Greenhouse Gases (ghg) released from human activities or natural sources and trapped in the atmosphere acting as blanket preventing the earth's heat from escaping into space, thereby increasing the earth's temperature, creating variability in the world climate. As a result of the increasing temperature is referred to as Global Warming.

During agricultural practices, methane gas (a GHG) is produced when bacteria decomposes organic matter. It has been estimated that close to a quarter of methane gas from human activities result from livestock and the decomposition of animal manure. Paddy rice farming, land use and wetland changes are also agricultural processes that contribute to the release of methane to the atmosphere. Methane or CH4 is responsible for a significant part of the greenhouse gases causing Global warming.

With the growth of industrial activities,

...

Download as:   txt (3.6 Kb)   pdf (62.1 Kb)   docx (11 Kb)  
Continue for 2 more pages »