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Several effects of global warming, including steady sea level rise, increased cyclonic activity, and changes in ambient temperature and precipitation patterns, have affected or are projected to affect the subcontinent.
As per the IPCC, depending upon the scenario visualised, the projected global average surface warming will result in temperature increases worldwide at the end of the 21st Century relative to the end of the 20th Century ranges from 0.6 to 4 °C.[1]
Regarding local temperature rises, the IPCC figure projected for the mean annual increase in temperature by the end of the century in South Asia is 3.3 °C with the min-max range as 2.7 – 4.7 °C. The mean value for Tibet would be higher with mean increase of 3.8 °C and min-max figures of 2.6 and 6.1 °C respectively which implies harsher warming conditions for the Himalayan watersheds.[2]
Rise in sea levelEdit
The corresponding sea level rise at the end of the 21st Century relative to the end of the 20th Century ranges from 0.18 to 0.59 m (excluding any rapid dynamical changes in ice flows in the future)[clarification needed][1]. More recent analysis of a number of semi empirical models predict a sea level rise of about 1 metre by the year 2100. [3] Ongoing sea level rises have already submerged several low-lying islands in the Sundarbans, displacing thousands of people.[4] Temperature rises on the Tibetan Plateau, which are causing Himalayan glaciers to retreat. It has been predicted that the historical city of Thatta and Badin, in Sindh, Pakistan would have been swallowed by the sea by 2025, as the sea is already encroaching 80 acres of land here, every day. [5]
As per the IPCC, depending upon the scenario visualised, the projected global average surface warming will result in temperature increases worldwide at the end of the 21st Century relative to the end of the 20th Century ranges from 0.6 to 4 °C.[1]
Regarding local temperature rises, the IPCC figure projected for the mean annual increase in temperature by the end of the century in South Asia is 3.3 °C with the min-max range as 2.7 – 4.7 °C. The mean value for Tibet would be higher with mean increase of 3.8 °C and min-max figures of 2.6 and 6.1 °C respectively which implies harsher warming conditions for the Himalayan watersheds.[2]
Rise in sea levelEdit
The corresponding sea level rise at the end of the 21st Century relative to the end of the 20th Century ranges from 0.18 to 0.59 m (excluding any rapid dynamical changes in ice flows in the future)[clarification needed][1]. More recent analysis of a number of semi empirical models predict a sea level rise of about 1 metre by the year 2100. [3] Ongoing sea level rises have already submerged several low-lying islands in the Sundarbans, displacing thousands of people.[4] Temperature rises on the Tibetan Plateau, which are causing Himalayan glaciers to retreat. It has been predicted that the historical city of Thatta and Badin, in Sindh, Pakistan would have been swallowed by the sea by 2025, as the sea is already encroaching 80 acres of land here, every day. [5]
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