NASA

King tides and climate change have become survival issues for the world’s coastal cities, writes Rob Pyne.

Last year was by far the hottest year in the observation record, with the global average surface temperature 1.24° Celcuis warmer than the late nineteenth century, according to NASA data. This broke the record set the previous year of 1.12°C, which in turn broke the previous mark set in 2014 of 1.01°C.

Although the El Nino conditions of 2015–16 had some influence — perhaps 0.2°C — it is clear that the warming trend is 1°C or more.

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