IMPACT OF CITY GREEN ON SURROUNDING MICROCLIMATE
CASE STUDY: WARRI - NARRINDA AREA, DHAKA
Abstract
Dhaka, decades of rapid population influx has led to demands for rapid urbanization. With increase in housing across the cosmopolitan, there is a demand for urban open space across various peripheries in the city. This research documentation encompasses the heat island of a central region in Dhaka city, the Warri–Narinda Zone. Through satellite data and field survey, attention has been placed on the cooling effect of city‘s Green Areas, Temperature and Humidity measurements during the day and night time. This research was conducted in the surrounding green areas of Warri-Narinda, the Baldah Garden, The Christian Cemetery and the neighboring households, avenues, and the Primary Road with flyover, secondary roads with mutual shading of build form. The cooling effect and relative humidity was recorded across various locations and the results indicated the cooling effects of city greens are remarkable not only at vegetated areas but also the surrounding built environments. This research aimed to explore the role of the Green Area on moderating the Microclimate, and to determine the impact of City Green Area on its surrounding micro climate in context of high density; and to find out the cooling effect depending on the types of existing trees in the region. From the field survey, temperature and humidity measurements show significant fluxes in the temperature through urban neighborhood.
References
Ahmed K. S. (1995). Approaches to Bioclimatic Urban Design for the Tropics with Special Reference to Dhaka Bangladesh, PhD Research
Ahmed, Z.N., 1994. Assessment of Residential Sites in Dhaka with respect to Solar Radiation Gains, unpublished Ph. D. De Montfort University,Leicester. p90.
Ahmed, Z.N., 2003. Natural ventilation
Chang, C.R., Li, M.H. and Chang, Chen, L. and Ng, E., 2012. Outdoor thermal comfort and outdoor activities: A review of research in the past decade.
Cities, 29(2), pp.118-125.
Declet-Barreto, J., Brazel, A.J., Martin, C.A., Chow, W.T. and Harlan, S.L., 2013. Creating the park cool island in an inner-city neighborhood: heat mitigation strategy for Phoenix, AZ. Urban Ecosystems, 16(3), pp.617-635. ENGINEERING (BHRC), 17(3), pp.357-371.
Evaluation of urban heat islands mitigation strategies using 3dimentional urban micro-climate model ENVI-met. ASIAN JOURNAL OF CIVIL in dense residential areas: studying alternatives. Department of Architecture, Bangladesh University of Technology, Bangladesh.
Kleerekoper, L., van Esch, M. and Salcedo, T.B., 2012. How to make a city climate-proof, addressing the urban heat island effect. Resources, Conservation and Recycling, 64, pp.30-38.
Koenigsberger, O.H., Ingersoll, T.G., Mayhew, A. and Szokolay, S.Z. (1978). Manual of Tropical Housing and Building; Part One; Climatic Design. London: Longman.
Maleki, A. and Mahdavi, A., 2016.
S.D., 2007. A preliminary study on the local cool-island intensity of Taipei city parks. Landscape and Urban Planning, 80(4), pp.386-395.
SM Humayun Kabir (2012), ""Baldah Museum"", in Sirajul Islam and Ahmed A. Jamal, Banglapedia: National Encyclopedia of Bangladesh (Second ed.), Asiatic Society of Bangladesh.
Tariq, T. and Arch, M., An ENVI-met Simulation Study on Urban Open Spaces of Dhaka, Bangladesh.
Tuli, S.M. and Islam, N., 2014, December. Impact of vegetation in urban open spaces in Dhaka City; in terms of air temperature. In 30th International PLEA Conference.
Wardoyo J, (2011) ―Vegetation Configuration as Microclimate Control Strategy in Hot Humid Tropic Urban Open Space‖
Zahoor, A. (1997) Effect of Trees in Ameliorating Air Temperature in Urban Setting in Pakistan, Dissertation unpublished, University of Idaho.
Zia Uddin Ahmed (2012). ""Baldah Garden"". In Sirajul Islam and Ahmed A. Jamal. Banglapedia: National Encyclopedia of Bangladesh (Second ed.). Asiatic Society of Bangladesh.
