Louisiana Urban Stormwater Coalition First in USA

Environment News Service reports

Concern about the rate of development of Urban Stormwater Programs by municipal separate storm sewer system (MS4) permit holders in Louisiana has prompted the formation of the Louisiana Urban Stormwater Coalition by representatives of some of the permit holders.

Read the full report at the [SOURCE: Environment News Service - Louisiana Urban Stormwater Coalition First in USA]

Infrastructure blamed for Turkish floods

Istanbul Floods SOURCE: CCTV

Istanbul Floods SOURCE: CCTV

The deadly floods in Turkey have been blamed on poor infrastructure and illegal development throughout the city like Istandul. Experts stated that areas that had infrastructure 10 years ago to cope with 10,000 people now have populations of 100,000 people with the same outdated infrastructure. The urban development of Istanbul has created large areas of impermeable surfaces that increase the amount and speed of water runoff.

SOURCE: Today’s Zaman

England to recover 2000 hectares of wetland

Natural England(independent public body) has committed £4million of funding to recover close to 2000 hectares of wetland. The funds will be distributed to organisatons such as the Wildlife Trusts and RSPB who will work with the Environment Agency and English Heritage to manage re-wetting the land.

Dr Helen Phillips, Chief Executive for Natural England: said: “It may be hard to imagine, but England was once a much wetter place than it is today. Around 90 percent of the soft and squelchy bogs and marshes have been lost over the last 1000 years. Healthy wetlands are a unique and vital habitat for wildlife and provide fantastic places for people to visit.

Wetland projects to receive funding over the next two years include the East Anglian fens, Humberhead Levels, Midlands Meres and Mosses, Morecambe Bay Wetlands, the Somerset Levels and the River Till in Northumberland*

SOURCE: Natural England

Madrid’s Shell Bridge gets its concrete dome – West 8

Construction is moving along at the first Shell Bridge, West 8+ MRIO designed for the City of Madrid. 100 m3 of concrete was poured inbetween the two layers of the wooden mold, moving another step closer to the desired end result: a concrete dome.

Concept

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SOURCE: WEST 8
IMAGE CREDIT: WEST 8

Scientists investigate urban climate in the Netherlands

041wubakfietsrotterdam

Reseachers at Wageningen University and Research Centre (WUR) have been riding around Rotterdam and Arnhem in the Netherlands on two trikes mapping and measuring the urban climate during four time intervals on a 24 hour day. The measuring was to study the Urban Heat Island (UHI) effect that often causes heat stress.

The measurements on 6 August in Rotterdam showed that during day time the city centre was two degrees warmer on average than Zestienhoven(Rotterdam) airport, which is located outside the city. A striking observation was that the city park De Twee Heuvelen was 2.4 degrees cooler than Zestienhoven. This means that the differences in the afternoon in the city can rise to 4.4 degrees centigrade. During the late evening (22-24 hours), the city centre was more than 5 degrees warmer than Zestienhoven. The route near the national Green Heart (Doenkade) turned out to be even cooler (2 degrees C) than Zestienhoven. The difference in temperature between the city and countryside consequently amounted to more than 7 degrees during nocturnal hours.

In the late afternoon the felt air temperature – the air temperature perceived by the human body – was 28 degrees C at Zestienhoven, the temperature at the city centre of Rotterdam (in the sun and out of the wind) would feel more than 6 degrees higher – so well above 30° C. Surprisingly, similar effects were measured in the much smaller city of Arnhem.

For the measurements (before sunrise, midday, late afternoon, after sunset), days with maximum temperatures above 25° C were necessary. With the two cargo bikes with measurement equipment, the researchers cycled along two previously determined routes through a number of characteristic urban districts, such as an industrial area, an older residential area, a city park and the harbour area. The researchers plan to take more measurements later this year and in 2010.

SOURCE: Wageningen University and Research Centre (WUR)
IMAGE: Wageningen University and Research Centre (WUR)

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