Temperatures in urban areas are rising, especially during the summer months due to the influence of El Niño, resulting in more days exceeding 40°C and longer heatwaves. What solutions will cities find to cope with the harsh summers ahead?
Air conditioners and cooling devices are indispensable on a scorching hot day, but to get cool air inside, the heat is blown out onto the streets. That's why the shade of trees is the ideal space for ride-hailing drivers to take a break.
Under the influence of El Nino, temperatures in urban areas are rising, with more days exceeding 40 degrees Celsius.
To determine the actual cooler temperature, reporters conducted tests on streets in Hanoi with both standard and substandard tree density.
After three years of research on the cooling capacity of urban trees, scientists from Hanoi University of Civil Engineering have conducted a detailed study on the cooling potential of trees in Hanoi.
Dr. Ngo Hoang Ngoc Dung (Faculty of Architecture and Planning, Hanoi University of Civil Engineering) stated: "According to our research, we need to plant trees at a distance of 6-8 meters to ensure the best possible cooling effect; secondly, we should pay attention to planting different types of trees together. The greening system on a street can be highly effective when we choose to plant trees of different heights, namely medium-sized and large trees."
Temperatures in urbanized areas of Hanoi are 2-3 degrees Celsius higher than in the suburbs. With the new urban plan, as Hanoi expands roads to over 16 meters, the allocation of green spaces needs to be carefully considered to prevent the city from becoming overloaded by the extreme heat during the summer.
Source: https://vtv.vn/cay-xanh-gop-phan-giam-nong-do-thi-100260526074836923.htm
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