If greenhouse gas emissions are not reduced, the sea level along the long Dutch coastline could rise by 1.2 meters (nearly 4 feet) by the year 2100. The institute warned in 2014 of a possible 1-meter rise.

Dutch climate experts warned Monday that the low-lying Netherlands could face higher sea level rises than previously forecast as well as the threat of extreme rainfall and other dangerous weather events caused by climate change.

The Royal Netherlands Meteorological Institute, known by its Dutch acronym KNMI, issued the stark warning in a new update based on its own research and a report issued in August by the United Nations’ Intergovernmental Panel on Climate Change.

The Dutch report was presented less than a week before the U.N.’s annual climate conference opens in Glasgow, Scotland. The Oct. 31-Nov. 12 event, known as COP26, is seen by many as an important and even crucial opportunity for concrete government commitments to reduce greenhouse gas emissions.

“It might not be cheerful reading, but it is necessary reading,” Dutch State Secretary for Infrastructure and Water Steven Weyenberg said.

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