A new study provides one of the most detailed assessments yet of how humanity could be affected by simultaneous catastrophes.

The research says that by 2100 cities such as New York could experience more than six “climate hazards” at the same time, the research shows.

Led by the University of Hawaii at Manoa, the study involved extensive data mining and analysis of information from across the world.

“Greenhouse gas emissions pose a broad threat to humanity by simultaneously intensifying many hazards that have proven harmful in the past,” lead author Camilo Mora said.

The paper, published in Nature Climate Change, examines future trends and suggests that unless humanity takes forceful action to curb greenhouse gas emissions, major urban locations could be struck by upwards of six crises at once by the end of the century.

“The collision of cumulative climate hazards is not something on the horizon, it is already here,” Professor Mora said.

“Co-occurring and colliding climate hazards are already making headlines worldwide.

“Last year, for instance, Florida recorded extreme drought, record high temperatures, more than 100 wildfires and the strongest recorded hurricane in its Panhandle: the Category 4 Hurricane Michael.

“Likewise, California is currently experiencing ferocious wildfires and one of the longest droughts, plus extreme heatwaves this past [northern]summer.”