Some experts believe the concept may be the best and cheapest way for countries to adapt to climate change. Therefore, more and more cities worldwide are using the so-called “Sponge City” concept.
As metropolises and smaller towns expand their traditional infrastructure, the increased coverage of asphalt and concrete creates more impervious surfaces. This reduces the areas where water can drain away, leading to heightened urban heat. Climate change exacerbates both of these issues.
One solution to address these challenges is the concept of Sponge Cities. This term originated in China, where a series of coordinated projects were approved by the central government. A Sponge City employs additional green spaces and replaces concrete with permeable surfaces that can absorb rainwater. During rainfall, these surfaces collect water and, when temperatures rise, the stored water evaporates, helping to cool the city.
Warsaw, like many major cities, is grappling with the impacts of climate change, which has resulted in more frequent droughts, heat waves, torrential downpours, and flooding, according to reports from the Center for Social and Economic Research. In response, the city is implementing an innovative Sponge City concept to better manage rainwater.
Sponge City technologies aim to blend seamlessly with the natural environment of the city, often making them nearly unnoticeable.
While the term “Sponge City” may not be universally recognized, the underlying concept is being applied in various locations worldwide. It is gaining popularity as a method to alleviate the urban heat island effect. Similar ideas are known as Water Sensitive Urban Design (WSUD) in Australia and the Middle East, Sustainable Urban Drainage Systems (SuDS) in the UK, and Natural Drainage Systems in Seattle, the Urbanist website reports.
(aj)
SOURCE: IAR; theurbanist.org; Center for Social and Economic Research