Climate change in Tuvalu

Climate change in Tuvalu is particularly threatening for the long-term habitability of the island state of Tuvalu. This is because the average height of the islands is less than 2 metres above sea level, with the highest point of Niulakita being about 4.6 metres above sea level. Between 1971 and 2014, during a period of global warming, Tuvalu islands have increased in size, according to aerial photography and satellite imagery. Over four decades, there was a net increase in land area in Tuvalu of 73.5 ha, although the changes were not uniform, with 74% of land increasing in size and 27% of land decreasing in size. The sea level at the Funafuti tide gauge has risen at 3.9 mm per year, which is approximately twice the global average. ()