Global warming is continuous increase in Earth’s temperature since the late 19th century. Global warming is disturbing the natural system of earth and almost all scientists are sure about the fact that reason of this change is carbon footprint and greenhouse effect. Emission of these harmful gases is due to increased use of fossil fuels and non-renewable sources which emits carbon into air. From 19th century till now the global surface temperature has rose to 3.7 centigrade and in coming years it is going to turn worst. From region to region future climate changes will vary but one common problem faced worldwide will be rise in sea levels and a change in the amount and pattern of precipitation.
Image indicates that our earth is getting warmer abnormally. A clear sign of global warming. ( Image 1 )
Natural Causes of Temperature Changes – Causes of Global Warming
Climate changes are responsible for pushing temperature towards warming and major causes of these changes are greenhouse gases, solar luminosity, volcanic eruptions, and variations in Earth’s orbit around the Sun. Greenhouse gas effect is that process under which absorption and emission of infrared radiation in atmosphere took place and it warms the atmosphere on earth. According to research, the major greenhouse gases are water vapor, which causes about 36–70% of the greenhouse effect; carbon dioxide (CO2), which causes 9–26%; methane (CH4), which causes 4–9%; and ozone (O3), which causes 3–7%. Human activities are also adding to this emission, right after industrial revolution.
Solar activities or output from sun has also increased since 19th century and adding in global warming. In last three decades this combination of solar and volcanic activity probably had a slight cooling influence on the climate but individually they are showing negative effects. These are some of natural couses of global warming.
In image shown below is the man made causes of global warming which is increasing temprature of earth significantly.
Image defining the causes of global warming and each of us is contributing in it individually.
Effects of Global warming:
Earth is getting warm day by day from North to West and everywhere between it. In Polar Regions mercury is adding up more than 1 degree Fahrenheit each year and in future it will reach to dangerous level. Signs of future problems are been monitored from last many years, as glaciers and sea ice is melting and animals are moving to cooler areas. Due to this sea level is rising which is becoming cause of heavy floods. Hurricanes and other storms are likely to become stronger. Global warming is reducing level of fresh air which can become reason of some major disease. You can again refer to image 1 to see effects of global warming in more detail.
Solutions to Global Warming – if there is any ?
Evidence of worst effects of global warming is becoming visible day by day and is giving rise to many controversies. Economics, sociology, and politics all are working together for planning for the future. They are trying hard to cut greenhouse gases, carbon footprint and other pollutants.
A new approach to control this situation has been proposed by researchers Stephen Pacala and Robert Socolow at Princeton University. They called it “stabilization wedges” which means reducing GHG emissions from a variety of sources with technologies available in the next few decades, rather than relying on an enormous change in a single area.
Social and Environmental situations caused by global warming
Natural system is detected as most influenced factor that is decreasing snow and ice extend and rising sea level to dangerous levels. Besides this, ecological system is also getting affected from temperature changes. Future climate change is expected to particularly affect certain ecosystems, including tundra, mangroves, and coral reefs. Changes are increasing ocean acidity that decreases the amount of carbonate ions, which organisms at the base of the marine food chain.
Socially at civil level many dangers are waiting for this world. It is expected that food production will decline that will become a reason of death for thousands of people. A study shows that by 2080, yields in developing countries could decrease by 10% to 25% on average while India could see a drop of 30% to 40%.