"Consumption patterns of those living in cities which are most at risk for climate change significantly....A whopping USD 1.5 trillion of wealth of the middle class has been lost to climate change across the globe between 1980 and 2014," UBS said in a report released from Zurich today.
The losses are high for a vast majority living in cities, especially in South Asia, which is home to the largest number of global middle class, as most people there are not insured against natural calamities, the report noted.
In 2000, nearly half of the global population of six billion lived in cities and the UN expects this proportion to jump to 60 per cent by 2025.
The report, titled 'Climate change: A risk to the global middle class' also says that the middle class, by virtue of living in cities, have and will continue to bear the brunt of the climate change impact.
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Noting that the five costliest events of 2015 were the winter storms in the US, Canada and Europe, it says natural disasters caused as many as 16,200 fatalities and involved losses worth USD 32 billion during the period.
dynamism, erosion of its wealth due to climate change threatens both economic and socio-political stability, says the report.
UBS arrived at the loss data after analysing the consumption of the middle-class in 215 cities and comparing consumption patterns to the level of climate change risks.
The study has found that in cities most at risk from climate change such as Los Angeles, Tokyo and Shanghai, spending priorities are noticeably different, with the middle-class there spending between 0.6 and 0.8 per cent more on housing than the national average.
In the US, middle class in high climate-change risk cities spends between USD 800 and USD 1,600 more annually on housing compared to a lower risk city while cutting down on luxury, entertainment and durable goods.
Paul Donovan, global economist at UBS Investment Bank, added the middle class' substantial assets and political influence make them key to climate change dialogue.
A key finding of the study is low penetration of insurance against natural calamities despite increased threat.
Even in the US, which has the highest level of insurance penetration globally, as much as 32 per cent of weather-related losses remain uninsured. This has resulted in the US government spending USD 136 billion, which is equal to USD 400 annually per household, between 2011 and 2013 for disaster relief for hurricanes, floods and droughts totalled.
Research shows that as temperatures rise beyond 30 degree Celsius, mortality rates rise. As of 2015, nearly 25 per cent of the 215 cities across 15 countries analyzed already had median annual temperatures above 20 degree Celsius.