Help Cool Climate Garden City

Suitable for recreation parks. But a team of scientists in Hamburg found that the park is also important in controlling the climatic conditions of the city. According to them, the park is useful in combating climate change.

A moment of relaxation in the city park and the lush green when the scorching heat of the sun would feel good . Not only greener and quieter than the surrounding urban area , but also cool . There are no buildings and road surfaces that can store and reflect solar heat .


Still, every day in Germany , a plot of land measuring about 50 football fields paved or fall victim to urban development . The mushrooming of buildings mainly affects the climate of the city. The more dense a city , more so the so-called heat island city , the air temperature in urban areas warmer than surrounding rural areas . In a German town center , the temperature of three degrees Celsius higher than surrounding areas .
A study on the effect of soil and vegetation on the climate , shows how important it is for cities to have open land and not paved . A research team from Hamburg recently launched the Soil Climate Observation City Hamburg ( HUSCO ) .
They put in two points of measurement facilities to determine to what extent climate cools the soil around and how the effects of the soil types vary . A measuring station is placed in a swamp with a high ground water level , and the station again in a dry area with low groundwater levels .
Remote sensor within
In both locations , a team of scientists build a miniature weather station to measure temperature , wind speed and humidity . They also dig a trench and put the sensor just below the soil surface and at a depth of 1.6 meters , explains project manager Annette Eschenbach . " The sensors include measuring soil temperature and water content , " said researchers from the University of Hamburg the ground .
The sensor has been collecting data in the last 3 years . Evidence suggests that dries on the location of the measurement period with low rainfall , clear Eschenbach . " It all depends on the level of the ground water at the site of measurement . "
Soil moisture was helped by groundwater , so it tends to dry out more slowly than land in the dry season with low groundwater levels .
The researchers found that the soil is more moist air cools around than dry soil . Especially during the year , the temperature in the city park and a half degrees lower than the surrounding environment full of buildings . " It means the city parks very important role for the local climate , " said Eschenbach .

The most effective soil moisture
Have more unpaved land in the city can be an important element of human while adapting to climate change . " Build more parks is always beneficial for the climate of the city, " said Annette Eschenbach . However, the researchers add , Hamburg project has shown that the park should be made at a location with moist soil . Thus , the function of cooling the garden would be much more effective .
But the desire to make more city parks contrary to widespread ambition to build more settlements in the city continue to keep prices affordable rents . Experts concerned about the impact of the island city pahang will get worse in the future , not only because of increasingly congested cities , but also because of global climate change .
" The last few years have been pretty damp , so that we need today is immediately warm summers and dry , " Eschenbach concluded , adding that the study will be continued HUSCO . A period of very hot weather , he said , will allow the team to get further evidence on the impact of climate city park on the city of Hamburg .