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Global warming can be defined as a gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide,CFCs, and other pollutants.This has been a natural phenomenon throughout the natural history of the world but it has only become a problem in the last few hundred years because of an anthropogenic increase in greenhouse gasses.
Global warming may have wider adverse effects.These can be:
Effect on global climate:
1.Increased frequency of heavy precipitation, draught, increased wind speed prolonged heat waves and cold waves; shift in seasons may lead to catastrophic damages. 2.It will also modify ocean current circulations and air circulation leading to change in local climates.
Impact on biodiversity:
1.Approximately 20-30% species assessed so far are likely to be at increased risk of extinction, if increase in global average temperature exceeds 1.5-2.5 degree Celsius. 2.There will be huge migration of fauna and flora to newer areas 3.Acidification of ocean due to increased Carbon Dioxide will lead to decrease the phytoplankton leading to increased vulnerability of marine biodiversity. 4.Melting of glaciers will lead to rise in sea level threatening species living in deltas and mangroves
Impact on Global food production:
1.As per report, one degree rise in temperature may lead to drop of food productivity by 30%. Adding to it the increased complexities of pests, diseases effecting the productivity. 2.As per latest IPCC report, global warming could lead to improving conditions for food production in mid to higher latitudes over the next few decades.Conversely, part of subtropics, and low latitudes could experience declining food production.. 3.Fisheries too become vulnerable.
Impact on Global health:
1.Global warming may lead to spread the outreach of vector borne diseases to higher latitudes. 2.Ground level pollutions (eg. smog) may increase leading to respiratory health issues and various other allergic diseases 3.The global warming may lead to scarcity of food leading to malnutrition.
Impact on world politics:
1.Already growing tension between developed and developing nations regarding taking the responsibility under CBDR. 2.It will cause large scale migration of people especially from small islands and poor countries leading to economic and social pressure on resources of developed nations. 3.Energy and food security and regional tension over natural resources like water may lead to regional clashes.
Unfortunately it is highly likely that the problems of global warming will persist unless immediate action is to be taken. Problems will exist unless hard geoengineering is developed or if people are given sufficient incentives to change their actions for the better.Need of the hour is for nations to come together and implement their respective INDCs (Intended Nationally determined contributions) under UNFCCC to counter global warming.
By: Harman Sandhu ProfileResourcesReport error
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