Atmosphere of earth

Definition “The earth is a natural greenhouse and is kept warm by water vapors, carbon dioxide (CO2), and other gases in the atmosphere, which absorb the sun’s energy and radiate it back toward the earth. This type of warming is called ‘natural greenhouse effect’. ‘Enhanced greenhouse effect’, on the other hand, causes global warming due to excessive levels of CO2 in the atmosphere.” Facts Average temperatures have climbed 1.4 degrees Fahrenheit (0.8 degree Celsius) around the world since 1880, much of this in recent decades, according to NASA's Goddard Institute for Space Studies.

5p vantrungtran 01-02-2010 152 44   Download

Facts on Climate Change A summary of the 2007 Assessment Report of the IPCC CLIMATE CHANGE is already having measurable consequences and future impacts are expected to A summary by: be wide-ranging and costly. How can we adapt to such changes or limit their extent? The latest findings of the IPCC provide some answers. .

6p vantrungtran 01-02-2010 186 43   Download