Senin, April 21, 2008

Global Warming

Introduction

Global warming is the increase in the average temperature of the Earth's near-surface air and oceans since the mid-twentieth century and its projected continuation.

The average global air temperature near the Earth's surface increased 0.74 ± 0.18 °C (1.33 ± 0.32 °F) during the hundred years ending in 2005

Increasing global temperature will cause sea level to rise, and is expected to increase the intensity of extreme weather events and to change the amount and pattern of precipitation. Other effects of global warming include changes in agricultural yields, trade routes, glacier retreat, species extinctions and increases in the ranges of disease vectors.

Problem

A few papers suggest that the Sun's contribution may have been underestimated. Researcher believe that the Sun may have contributed about 45–50% of the increase in the average global surface temperature over the period 1900–2000, and about 25–35% between 1980 and 2000. This is the factor that can increase the major problems that can increase the effect of Global Warming called Greenhouse Gas Emissions. Gases that trap heat in the atmosphere are often called greenhouse gases. Some greenhouse gases such as carbon dioxide occur naturally and are emitted to the atmosphere through natural processes and human activities. Other greenhouse gases (e.g., fluorinated gases) are created and emitted solely through human activities.

Solution

You release greenhouse gases as a result of using energy to drive, using electricity to light and heat your home, and through other activities that support our quality of life like growing food, raising livestock and throwing away garbage. Greenhouse gas emissions can be reduced through simple measures like changing light bulbs and properly inflating your tires.

At Home:

Ø Replace the conventional bulbs in your 5 most frequently used light fixtures with bulbs that have the ENERGY SAVINGS

Ø When buying new products, such as appliances for your home, get the features and performance you want AND help reduce greenhouse gas emissions and air pollution

Ø Reduce, Reuse, and Recycle

If there is a recycling program in your community, recycle your newspapers, beverage containers, paper and other goods. Use products in containers that can be recycled and items that can be repaired or reused

Ø Use water efficiently

On the Road

Ø Tune your ride

A well-maintained car is more fuel-efficient, produces fewer greenhouse gas emissions, is more reliable, and is safer!

Ø Check your tire pressure regularly. Under-inflation increases tire wear, reduces your fuel economy by up to 3 percent and leads to higher greenhouse gas emissions and releases of air pollutants.

Ø Use public transportation