UHI Effect: Impact on Sustainability

Urban Heat Island (UHI) Effect arises due to absorption of incident radiation from the sun by built surfaces of tall buildings, roof, concrete structures and asphalt roads and then releasing it in the form of heat. The term “urban heat island” describes the built-up areas that are significantly hotter than the surrounding open, natural or rural areas. It occurs on the surface and in the atmosphere. The built surfaces are made of high-percentage of non-reflective and water-resistant construction materials. These materials act as heat sinks that absorb the radiated heat and store it for long time. The Urban Heat Island … Continue reading

Climate Change Impacts in MENA

The Middle East and North Africa (MENA) is known for being one of the hottest places on Earth, and highly vulnerable to climate change impacts. In an IPCC special report on regional climate change, models projected that average temperatures in the region will increase by 1-2˚C by 2030-2050. Decision makers and citizens in all 21 countries realize that they are faced with an immediate need to reshape energy, agriculture, water and environmental policy to adapt to changing climate conditions. Steep Rise in Temperature Satellite data provided by Climate Engine from 1979 to present shows the mean max (average maximum) temperatures … Continue reading

Unending Benefits of Wetlands

Wetlands are wonderful for numerous reasons but these wonders weren’t always known to man and it was often common to overlook the importance of this distinct ecosystem. The mention of a wetland used to bring to mind images of murky, mosquito-riddled swamps or unused lands that needed to be developed into a space which would be more useful to humankind. Wetlands were grossly undervalued which led to loss of many and provoked the Convention on Wetlands to be signed in Ramsar, Iran in 1971. The Ramsar Convention still serves as an international wetland conservation movement and currently holds over 160 nation … Continue reading

Introduction to Green Roofs

Green roofs are emerging technologies that can provide a wide range of tangible and intangible benefits to communities interested in enhancement of their environment.  Green roof development involves the construction of a vegetative layer on top of a human-made structure or building adding green space to areas that would otherwise be unused.  The major benefits of green roofs are reducing energy use as well as air pollution and greenhouse gas emissions, enhancing stormwater management and water quality, decreasing heat island effect by regulating temperature for the roof and the surrounding areas and providing aesthetic value and habitats for many species.  … Continue reading

Green Roof Potential in Arab Cities

Urban green roofs have long been promoted as an easy and effective strategy for beautifying the built environment and increasing investment opportunity. The building roof is very important because it has a direct impact on thermal comfort and energy conservation in and around buildings. Urban green roofs can help to address the lack of green space in many urban areas. Urban green roofs provides the city with open spaces that helps reduce urban heat island effect and provides the human population on the site with a connection to the outdoors. However, we must differentiate between two types of urban green … Continue reading

Mitigating the Effects of Sand and Dust Storms

Sand and dust storms cause significant negative impacts on society, economy and environment at local, regional and global scale.  There are three key factors responsible for the generation of sand and dust storms – strong wind, lack of vegetation and absence of rainfall. The environmental and health hazards of such storms cannot be reduced permanently, however its impact can be reduced by taking appropriate measures. As the dust cloud rises, it reduces the horizontal visibility which can impact human life in many ways. The fine suspended particles also contain contaminants, bacteria, pollens, which cause negative health impacts such as allergies and respiratory diseases. Dust also … Continue reading

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