Global Warming is the process of increase in earth’s average temperature.
Scientists believe that it is the human activity that is driving the temperature up. Since the industrial revolution began factories, mills and cars have burned fossil fuels (oil, petrol ) releasing Carbon dioxide and other gases into the atmosphere. These gases trap heat near earth through a naturally occurring process called Green House effect.
In Greenhouse effect, the sun radiates energy towards earth in the form of radiations (x rays, UV rays etc.) and the greenhouse gases absorb some of the radiations whereas others are reflected back towards the sun. The absorbed radiations cause an increase in earth’s temperature. The naturally occurring gases in the atmosphere trap some of the energy and reflected back. The greenhouse effect is being intensified by the extra Greenhouse gases that humans have released. As long as nations increase their fossil fuel consumption the concentration of greenhouse gases will continue to rise.
Pakistan is among the top 10 countries affected most by global warming. Pakistan bridges middle east and South Asia and due to its geographical location, the average temperature is predicted to rise faster than anywhere else in the world, increasing 4 degrees Celsius by the year 2100 according to World wildlife fund report. In June 2015, more than 1200 people died from the heatwave and 65000 were treated for heat illnesses, the provincial management authority for Karachi reported.
Depleting water supplies are also a big problem for Pakistan as 60 % of land in Pakistan receives less than 10 inches of rain per year. Rivers in Pakistan are mainly fed by Glaciers which are melting rapidly. All these happenings are just because of Global Warming. The ozone layer, which stops damaging rays from penetrating the atmosphere, is also depleting because of these harmful gases. Chlorofluorocarbons break up O3 bond, forming CO2, etc.
The high temperature of the earth boosts the sea level that can cause havoc, and even annihilation, of humans and other species. Followed by heavy floods, destruction of land and the spread of infectious diseases are the major impacts that are caused due to global warming. Besides, the water crisis has become another global issue. In Pakistan, no proper measures are being adopted to store water in the reservoirs. As a result, water is wasted in a large quantity. Such factors are decreasing per-capita availability of water. Moreover, amid such a situation, mismanagement leads to floods, with disastrous consequences.
The most urgent need of the time is to take proper measures, both at the national and international level, to control global warming. The environmental systems of every country must be in line with the changing environmental patterns. It is the responsibility of all of us to grow as many trees as we can, to save our planet. All the devices used at home must be environment-friendly. The use of renewable energy supplies reduce not only the financial costs but also maintains the global temperature at a proper level. We will have to take discerning measures before it is too late. Everyone will have to put in all-out efforts in this regard. We should, at least, plant more and more trees. Many agreements have been made to keep the global rise in the temperature of the earth at a maximum of 2 degrees. The role of all the climate agreements is important to strengthen the global response to the threat of climate change.
It must be understood by all that global warming is not the issue of one country; it is a global issue that must be resolved with concerted efforts, cooperation and coordination. Though global warming has become one of the most serious issues of the world, it can be mitigated with adherence to the objectives of climate agreements. We need to realize this fact to ensure a better future.
Written By Muhammad Atif Khan and Mohammad Shahzad