Just over half of the world's urban greenhouse gas emissions come from just 25 mega-cities, with Shanghai (pictured, Tokyo and Moscow topping the list, a study has found
Researchers from the Sun Yat-sen University in China recorded, for the first time, the greenhouse emission levels of 167 cities located across the globe.
Twenty-three Chinese cities — including Beijing and Handan — were also found to be among the most intensive urban greenhouse gas emitters.
Even though cities only cover some 2 per cent of the Earth's total surface area, they are major contributors to the climate crisis, the team explained.
Moreover, they said, current urban greenhouse gas mitigation efforts are not enough to meet global targets to limit the extent of climate change by the century's end.
Nowadays, more than 50 per cent of the global population resides in cities,' said paper author and urban environmental management researcher Shaoqing Chen of the Sun Yat-sen University in Guangzhou.
'Cities are reported to be responsible for more than 70 per cent of GHG emissions, and they share a big responsibility for the decarbonization of the global economy.'
'Current inventory methods used by cities vary globally, making it hard to assess and compare the progress of emission mitigation over time and space.'
In their study, Dr Chen and colleagues first conducted sector-level greenhouse gas emissions inventories of 167 cities — from Durban, South Africa to Milan, Italy — from within 53 different countries across the globe.
Each city was chosen for its representativeness in terms of urban size and regional distribution, the team explained.
Next, they assessed how each city's efforts to reduce their carbon footprint had been performing by comparing changes in emission levels from 2012–2016 with their stated short-, mid- and long-term carbon mitigation goals.
The team found that cities with high greenhouse gas emission levels could be found in both developed and developing countries — but noted that megacities like Shanghai and Tokyo) were particularly significant emitters.
Looking at the latest findings it seems to me the China creates this so called Government global warming problem crisis. It seems we have to pay massive unproportionate heavy amounts in Global Warming related taxes to our Governments for something they will never ever be able to fix as the problem is located in China's big cities. (these Global Warming taxes normally normally prop up Government gold plated pensions and massive Government overspending in the West),