3 Degrees C: Outlooks For Dhaka, Paris, New Orleans, Norilsk, Cape Town - DW
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A 3-degree temperature rise would make heatwaves far more common — including the birthplace of the Paris Agreement. Recent analysis by the World Weather Attribution (WWA) suggests summer temperatures over 40-degrees Celsius could be the norm across Europe by 2050.
Bit big cities like Paris also have to contend with air pollution, which is exacerbated by prolonged hot spells — and vice versa. A 2017 study found a combination of heatwaves and particle pollution exacerbate one another, posing a significant risk to human health. We don't even have to wait for the end of the century to see the impact extreme hot weather can have in urban hubs. France was hit especially hard by the 2003 European heat wave, with Paris recording an excess death rate of 141 percent. More recently, this year's "Lucifer" heatwave made headlines across southern Europe.
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With a population of 14.4 million, Dhaka is the fourth most densely populated city in the world. And it's also one of the most vulnerable to rising sea levels. A global mean temperature increase of 3 degrees Celsius would cause the oceans to rise by 2 to 4 meters within the next three centuries. But a 2013 analysis, shows high tides in Bangladesh are rising at least 10 times faster than the world average, implying a 4-meter rise by 2100. That would drive at least 15 million people from low-lying rural areas into cities like Dhaka.
Muthukumara S. Mani, an economist at World Bank's South Asia sustainable development department, has identified areas that will become climate change "hotspots" over the coming decades. "Definitely Dhaka is very vulnerable to climate change and needs to be prepared," he told DW. "What happens in Dhaka will also depend a great deal on what happens elsewhere in Bangladesh. If things start going down [hill] then obviously people are going to start migrating to Dhaka and that's going to worsen the situation."
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http://www.dw.com/en/the-world-at-3-degrees-what-it-means-for-five-cities/a-41392444
