Technological Advancement & Green House Effect

Technological Advancement & Green House Effect

The journey of technological achievements is the expression of the human wants, as almost all the progress in this direction is directly or indirectly meant to bring more and more comforts in the human life, From Medicine to Space researches, from moderation of crop cultivation to Industrialization boom every new technology invented only for the human beings to meet with the proportionally increasing population and demands.

With the growing population, human individual and social life is under the speedy alterations, rural life is going to be sidelined by the attractive, dreamy, mirage full and more importantly with much and much populated city life. Industrialization and Urbanization are the two important yields of the technological advancement and are the root cause of the deforestation. This process of reduction in the forest lands started the imbalance of the environment and resulted in the disturbance of human health. According to World Health Organization [WHO] Health is fundamental right of every citizen of earth irrespective of race, religion, and political belief, economic and social conditions and is “State of Physical, Mental and Social well-being and not merely the absence of disease and infirmity”. In the previous article we had talked about the individual health and effects of pollutants, here we will concentrate on the social aspect. Life activities on earth are dependable on the amount of solar energy [radiations] absorbed by the earth. In the environmental it is common saying "Venus is too hot, Mars is too cold, and Earth is just right." This is because of earth’s average surface temperature remains in between the freezing point and boiling point of the water. This temperature is ideal for the existence and growth of the life; it is unfortunate that our technological advancements are proving catalysts for the growth in the temperature of the earth surface. This phenomenon of increase in temperature is commonly known as the Global Warming, the destroying power of this can be visualized from that Global warming may prove the reason to start of third world war. The first step of Global warming starts with the “Green House Effect”.

Green House Effect

Go on the village bound roads of the Maharashtra state, a state speeding on technological advancement, road side dome shaped structures constructed on the crop fields are the common sight. These dome shaped constructions are the Green Houses, meant to cultivated flowers and vegetables by trapping reflected solar radiations and keeping the temperature inside the dome suitable and matched with the favorable for the plant life. Earth is with natural green house. Energy radiated by the sun in the form of spectrums of varying wave length. Visible light energy [wave length 400 and 700 nm] comes through the atmosphere and absorbed by land, ocean and plants on the earth. This light energy is converted into heat energy and re-radiates in the form of infra red radiation [invisible, wave length range from 700 to 1000 nm]. The natural effect of this must be that during the day temperature of earth goes on increasing and with the sun set it should goes on reducing rapidly to reach below the zero degrees but our day to day life proves other than this, because the trace gases, mainly water vapor (H₂O), carbon dioxide (CO₂), methane (CH₄), and nitrous oxide (NO_x), of our atmosphere works as an insulator or blanket which trapped these energy radiations and helps in keeping the earth surface temperature constant. This is the natural Green House effect and these gaseous components of the atmosphere are known as the Green House Gases. This atmospheric green house effect is dependable of many factors [scientific term: albedo, which defines the percentage of solar energy reflected back by a surface] such as cloud cover, type of earth surface, amount of green house gases and so on. The predications of the climatic changes are based on the study of albedo. The following are some of the factors that influence the earth's albedo.

Cloud Albedo: Altitude and optical properties of the clouds are the factors that are intended to produce cool or warm effect on the earth surface respectively. Cumulus and cumulonimbus cloud appearing at low altitudes are reflecting incoming solar energy hence reduce the earth’s surface temperature, where as the cirrus clouds which are comparatively thinner and placed at more height are increasing the surface temperature of earth by absorbing more solar energy.

Surface Albedo: Dark colored lands are more absorptive hence we find high temperatures in the desert land where as ice lands are more reflective so most of the radiation energy get reflected and temperature.

Coming up: How human beings are disturbing atmospheric green house effect and Global Warming.

Earth Day [April 22, 2007]

Today is the earth day I wish to utilise this opportunity to make you all aware about the more dangerous effect which is being under covered by the global warming a campaign more beneficial to multi national companies after all we are living in the marketing age and hence what we see, what we think about and what we should concerned about is not only dominated but also decided by the views of these handful multinationals according to their own advantages and disadvantages especially if you are a citizen of third world countries. Before I come to my topic

John McConnell, Founder of Earth Day says-------

When I first conceived of Earth Day, a global holiday to celebrate the wonder of life on our planet, I thought long and hard about the day on which it should fall. It must be meaningful. One that might be accepted universally for all of humankind.Every effort to encourage Earth care is to be commended. But just as more than one birthday each year for an individual would diminish the real birthday, calling other dates Earth Day detracts from the authentic day -- which can provide a more meaningful focus and obtain more unity in our diversity. The nature of the March equinox provides a reason for an event at the same time all over the world.[source :http://www.earthsite.org/day.htm ]

Significance of the Day

April 22 is the birthday of American television star Eddie Albert, an early environmental activist.

April 22 is also the birthday of Julius Sterling Morton, the founder of Arbor Day, a national tree-planting holiday started in 1872. Arbor Day became a legal holiday in Nebraska in 1885, to be permanently observed on April 22. According to the National Arbor Day Foundation "the most common day for the state observances is the last Friday in April . . . but a number of state Arbor Days are at other times to coincide with the best tree planting weather." It has since been largely eclipsed by the more widely observed Earth Day, except in Nebraska, where it originated.

Global Cooling

Global cooling in general can refer to a cooling of the Earth; more specifically, it is a theory positing an overall cooling of the Earth's surface and atmosphere along with a posited commencement of glaciation. This theory never had significant scientific support, but gained temporary popular attention due to press reporting following a better understanding of ice age cycles and a temporary downward trend of temperatures from the 1940s to the early 1970s. In the 1970s, there was increasing awareness that estimates of global temperatures showed cooling since 1945. The general public had little awareness about carbon dioxide's effects: at the time garbage, chemical disposal, smog, particulate pollution, and acid rain were the focus of public concern, although Paul R. Ehrlich mentions climate change from the greenhouse gases in 1968.Currently, there are some concerns about the possible cooling effects of a slowdown or shutdown of the thermohaline circulation, which might be provoked by an increase of fresh water mixing into the North Atlantic due to glacial melting. The probability of this occurring is generally considered to be low, and the IPCC notes, "However, even in models where the THC weakens, there is still a warming over Europe. For example, in all AOGCM integrations where the radiative forcing is increasing, the sign of the temperature change over north-west Europe is positive. Here we must remember that it was lowering of temperature that has turned fertile Green land into desert of Arctic. In 2006 Russian solar physicist Khabibullo Abdusamatov predicted that Global Cooling, similar to the Little Ice Age, will begin around 2012-2015 and reach its peak between 2055-2060.As the NAS report and the article in Newsweek both indicate, scientific knowledge regarding climate change was more uncertain than it is today. At the time that Rasool and Schneider wrote their 1971 paper, climatologists had not yet recognized the significance of greenhouse gases other than water vapor and carbon dioxide, such as methane, nitrous oxide and chlorofluorocarbons.So friends make your self aware of this and see what can you do to save mother earth from this. Your thinking is the true celebration of the earth day, because without you this is just another annual celebration, the day comes we talk about and forget for next 364 days.