Arabian Sea level rise by nearly 3ft : due to green house effect

Climate Action Facts
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 The Arabian Sea that is one of the major arms of the Indian Ocean; it impacts 
the climate and supports a host of aquatic lives; is changing dramatically. New data
 revels that because of the greenhouse effect the sea level could increase by nearly 
 3ft or approximately 90cm by the end of the century. This change is problematic for
 the future of the coastal communities, ecosystems and their economies in the area. 


 Understanding the Greenhouse Effect
 
 In order to adequately explain this predicament it is necessary to give the short breakdown of the greenhouse effect. This relates to the ability of some gases in the Earth’s atmosphere to confine heat hence denying it a chance to escape into space. These gases which are carbon dioxide, methane and nitrous oxide trap heat within the earth’s atmosphere like a glass house, hence the name greenhouse gases. Some of the natural gases are carbon dioxide, methane, nitrous oxide and marsh fogs While human interference like burning of fossil, deforestation and industrial processes, among others, have raised the levels of these gases and hence encouraged global warming.
 

 Rising Sea Levels: Future of Arabian Sea  


 According to the latest reports from the Intergovernmental Panel on Climate Change (IPCC) and various research institutions, sea levels are rising due to two primary factors:
 
 Thermal Expansion: With climate changes or with the increase in the temperature of the surface of the earth, the water in the sea rises. This expansion of the sea due to the heat moreover results in sea level rise.
 
 Melting Ice: An increase in the prices of tea, coffee, cocoa etc which are heat sensitive commodities they indicated that global warming such as through melting of glaciers and ice sheets, Greenland and Antarctica contribute to more water in the oceans.
 
 This is so particularly for the Arabian Sea region which covers over 3. 8 million sq. kilometers, the projected rise with average of nearly 3 feet by 2100 indicates a major worry. Surveys done by the Indian National Centre for Ocean Information Services (INCOIS) as well as research institutes of other regions reveal these shocking predictions. According to their statistics, the future sea levels are likely to increase with the coastal regions and islands at risk of submersion if the present trends persist. 


Impact on Coastal Communities
 
 These will be the consequences of daily observing a three-foot rise in the sea level. Some of the worst affected cities are Mumbai on the coast of India,

Karachi on the coast of Pakistan and Muscat on the coast of Oman. Such urban centres are already experiencing the effect of frequent flooding during high tide and storm surge. A further rise could lead to:
 
 Increased Flooding: Increased intensity and frequency of floods may lead to loses of lives, displacement of millions of people, loss of property and disruption of economic activities.
 
 Loss of Habitat: Mangroves and coral reefs that exist at coastal regions are very important in judging the level of biodiversity. Coastal erosion results in habitat loss and decrease in storm protection to the communities living along the coast line.
 
 Economic Impact: Fisheries and tourism among other sectors could be affected for instance by reduced product yields and losses in revenue resulting from fungi impacted ecosystems and entrances. Further, implications on cash flow relating to funding of flood defenses and adaptation could prove economically burdensome for regional development.
 
 What Can Be Done?
 
 Addressing the challenge of rising sea levels requires both mitigation and adaptation strategies:
 Reducing Greenhouse Gas Emissions: Thus, slowing of sea level rise can also be achieved only by cutting greenhouse gas emissions. This includes shift to usage of clean power sources, reduction of energy wastage and practicing sustainability in the farm and factories.
 
 Enhancing Coastal Resilience: Coastal protections such as seawalls as well as natural barriers like mangroves can be considered as a means for protection of vulnerable shores. Furthermore, increasing efficiency of land use playing an important role in decreasing the effect of flood occurrence.
 
 Community Preparedness: Internally, little can be done apart from educating and preparing the communities for the worst since sea level rise continues to happen unabated. These are categorized by the planning, construction, coordination, improvement and maintenance of evacuation procedures for natural disasters, the reinforcement of infrastructure, and the proper implementation and regulation of the sustainable use of the coastal line.
 
 Looking Ahead
 
 An increase by almost 3 feet in the Arabian Sea is not future possibility but a real possibility that has been extrapolated with the current trends. At the same time, it has to be noted that such a situation is perfect for the action.


 



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