What will be the ultimate impact of Global warming in Bangladesh?

Question

How Bangladesh can prevent or take necessary precaution to protect from this terrible disaster?

It is been observed and broadly telecasted all over the country within the last few days that many place in Bangladesh mainly the Northern part will go under the sea level and which will also have a bad effect on environment

What is your suggestion

Answer 1

Bangladesh is so low-lying already that any rise in sea level will put it underwater. There's nothing we can do about that except to have people move to higher ground.

Answer 2

Three major impact of global warming on Bangladesh may be categorised as: climate change, sea level change, and changes in the pattern of distribution and density of population.

1. Climatic change: Using general circulation models (GCMs) of the climate system, scientists had predicted a global change in temperature in the range of 1.5°C to 4.5°C with the doubling of carbon dioxide in the atmosphere.

2. Sea level change: Global warming will cause a thermal expansion of the seawater. A rise in temperature will also melt the polar and alpine ice sheets. Since Bangladesh is deltaic, vast areas of the country will be submerged with the rise of the sea level. How much of the country will be lost to the sea will depend on the relative change in the sea level. As Bangladesh is part of an active delta a huge load of sediments is brought down and deposited by the great river systems of the ganges, brahmaputra and meghna. This leads to elevation of land. However, the weight of the huge load of sediment results in compaction of the soil and land subsidence. The sea floor is also rising because of deposition of sediments brought down by the rivers. subsidence and uplift of land may also occur from tectonic processes. A Taskforce report predicts that for one metre rise in the sea level will lead to loss of about 22,889 sq km of land, which is about 15.8% of the total area of Bangladesh.

3. Being a low-lying and densely populated country Bangladesh would be worst hit by any rise in the sea level. Coastal areas will experience erosion and inundation due to intensification of tidal action. A rise in seawater will enable saline water to intrude further inland during high tides. Destruction of agricultural land and loss of sweet water fauna and flora could also occur. The shoreline will retreat inland, causing changes in the coastal boundary and coastal configuration. The process will also shrink the land area of Bangladesh.

Chokoria Sundarbans, Bangladesh - Flooded mangroves. Rising ocean levels have flooded about 18,500 acres (7,500 hectares) of mangrove forest during the past three decades. Global sea-level rise is aggravated by substantial deltaic subsidence in the area with rates as high as 5.5 mm/year.

To sum up, for Bangladesh, the climate changes caused by global warming may lead to more rainfall, massive floods, great cyclones and droughts. However, conservation of the environment and sustainable development strategies will definitely protect the earth and its environment and will particularly save countries like Bangladesh from the catastrophe which can be induced by global warming.

The Asian region spans polar, temperate, and tropical climates and is home to over 3 billion people. As the climate warms, many mountain glaciers may disappear, permafrost will thaw, and the northern forests are likely to shift further north. Rapid population growth and development in countries like China and India will put additional pressures on natural ecosystems and will lead to a rapid rise in the release of greenhouse gases into the atmosphere unless steps are taken to curtail emissions.