From the sea – After India and Pakistan, Europe, the United States, China to Japan, extreme temperatures have been increasing for weeks.
It killed hundreds of people, caused forest fires in Spain, Portugal, France, Italy and Greece, and displaced thousands. Many residents take refuge in public refrigeration centers.
bring together Unep.org As a heat wave engulfs Europe, cities are turning to nature for solutions.
World heat records continue to fall as simultaneous heatwaves scorch many countries.
According to the Japan Meteorological Agency, about 90 cities have issued heat warnings, including several cities in Japan that have set heat records since 1875.
Meanwhile, in the United States, more than 100 million people are under heat warnings as wildfires spread across California, prompting President Joe Biden to consider declaring a climate emergency.
The epicenter of the current global heatwave is Europe, where millions are suffering, with train delays causing inconvenience to commuters in France, Italy and the UK.
High temperatures are especially pronounced in urban areas. Cities are 5°C to 9°C warmer than rural areas because buildings and concrete sidewalks absorb and emit sunlight. The density of people, cars and machines also plays a role in the rise in temperature.
“We are concerned about the city because that’s where most of the population lives,” said Eleni Myrivili.
UN-Habitat recently named Myrivili as . named as General Manager of Heat To pioneer heat response and resilience measures in cities around the world.
Myrivili also works together Heat Action Arsht-Rock PlatformA tool for elected municipal officials to reduce the human and economic impacts of oppressive heat, developed in partnership with the United Nations Environment Program (UNEP).
“We have too many socio-economically vulnerable and energy-poor people who have little protection against these extreme events. We have to recognize the heat as a crisis in order to focus,” Mayrivilli said.
As seen earlier this year India and Pakistan, heat wave that burned so many more countries Hotlonger and more often due to climate change.
Climate experts have long warned of rising temperatures and increased risks to human health and infrastructure.
report Intergovernmental Panel on Climate Change The 2022 (IPCC) or Intergovernmental Panel on Climate Change paints a grim picture of what unchecked global warming looks like: increased heat waves, longer summers and shorter winters.
According cool combine harvesterA global effort for efficient, climate-friendly cooling envisioned by UNEP, extreme temperatures kill 5 million people a year, with heat-related deaths rising.
“At temperatures of 1.5°C, 2.3 billion people could be exposed to heat waves and have negative effects on health and productivity,” said Mark Radka, head of the climate and energy branch. from UNEP.
“Without action, by 2030 an estimated 80 million full-time jobs could be lost globally to heat stress, resulting in an economic loss of US$2.3 trillion.”
Myrivili sees the challenges facing the city as two pressing priorities that must be pursued simultaneously.
Myrivili said the short-term goal is to save lives by helping vulnerable communities stay calm during heat waves. Going forward, the long-term goal is to build resilience to climate change by permanently cooling cities and bringing nature back to urban areas.
“Trees are the heroes when it comes to coolness,” Mirivilli said.
“Building forests and green corridors in cities is an effective way to convert air masses in cities into larger, cooler areas.”
UNEP data revealed that planting trees on city streets would bring 1 degree Celsius relief to 77 million people in hot weather.
Jonathan Duvin, Head of the City Unit at UNEP, said: “Redesigning urban landscapes with more vegetation and water and implementing passive cooling strategies to improve thermal performance and reduce energy consumption energy in buildings can help cities warm up. The key is to make it more wave resistant.
UNEP, working closely with Indian cities, has supported longstanding solutions to cool urban areas,
Develop environmentally friendly cooling strategies and support district-level cooling systems in countries like Vietnam and Cambodia in Egypt.
The building and construction sector is seen as key to achieving the climate change mitigation and adaptation goals set out in the Paris Agreement by 2050.
Keeping cities at livable temperatures is one of the biggest issues facing governments in the face of the climate crisis.
From cool sidewalks to Tokyo rooftops Ecological In Toronto, cities around the world are experimenting with new, sustainable ways to stay cool.
Meanwhile, in the Greek capital Athens, hit by severe drought and rising temperatures, city officials are renovating historic Roman-era aqueducts to irrigate the city’s green corridors.
However, these projects require not only great political will from elected officials, but also substantial public and private investment.
Myrivili said his work Global Heat Manager The first UN-Habitat will be guided by the question: How can we use our natural resources better and more sustainably to increase heat resistance in cities?
According to Mayrivilli, this is a difficult question to answer that requires not only a systems approach to sustainable district cooling, but also a redefinition of our ideas of what a city could look like, he said.