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South Talpatti Island as it was known in Bangladesh or New Moore Island or Purbasha as it was known in India was a small uninhabited offshore island that emerged in the Bay of Bengal in the aftermath of the Bhola cyclone in 1970 and disappeared at some later point.
Its sovereignty was disputed between Bangladesh and India for years until the island became submerged. There had never been any permanent settlement or stations located on the island.
... Several articles have been published recently on sea level rise that caught our eye at World Climate Report. The first appeared recently in Global and Planetary Change and was written by a pair of scientists with India’s National Institute of Oceanography. Unnikrishnan and Shankar begin their article noting “Apart from changes in the atmospheric variables, global sea-level rise is one of the good indicators of climate change. Increase in global atmospheric temperature has a direct effect on the ocean by causing a rise in ocean temperature and melting of glaciers. Both these processes lead to a rise in global sea level.” Furthermore, they state “The Intergovernmental Panel on Climate Change (IPCC) reported values between 1–2 mm yr−1 for the 20th century sea-level rise based on tide-gauge data.”
Unnikrishnan and Shankar collected tide gauge data for a variety of stations located at coastal locations around the Indian Ocean (see Figure 1). They conducted a series of tests for inter-station consistency and they also adjusted the sea level measurements for vertical land movements. At the end of the day, they found that the corrected sea level rise in the region over the past five decades was indeed between 1–2 mm yr−1. However, some of the trends were suspect, so they reduced the number of stations for conducting the analyses. They state “In conclusion, therefore, we use the estimated trends for Aden, Karachi, Mumbai, and Kochi in the Arabian Sea and for Vishakhapatnam in the Bay of Bengal. The sea-level rise estimated from these stations is between 1.06– 1.75 mm yr−1, with an average of 1.29 mm yr−1. Given the problems noted above with some of the records, the average estimate for the basin is likely to be towards the lower end of this range.” When compared to global records, they write “The present study indicates that the estimates for the north Indian Ocean are consistent with global estimates, though somewhat lower.” Imagine that — once someone collects data in their part of the world, they seem to conclude that sea level is rising at a rate slower than the rate reported by the IPCC......