Climate change security

Sea levels north of New York City rose by 128mm in two years, according to a report in the journal, Nature Communications.

Coastal areas will need to prepare for short term and extreme sea level events, say US scientists.

Climate models suggest extreme sea level rises will become more common this century.

"The extreme sea level rise event during 2009-10 along the northeast coast of North America is unprecedented during the past century," Prof Jianjun Yin of the University of Arizona told BBC News.

US sea level north of New York City 'jumped by 128mm'