Green to Grey: An Urban Heat Assessment of Kumasi, Ghana
C. Koranteng, B. Simons, D. Nyame-Tawiah
International Journal of Environment and Climate Change · pp. 751–763 · Published 26 Nov 2019
10.9734/ijecc/2019/v9i1230155Abstract
The current study assessed the city of Kumasi, Ghana to find out the extent of urban heat and the views of the populace about their climate. Both the subjective and objective approaches were utilized in the study. Secondary data from the Meteorological Survey Department in Kumasi covering temperature and relative humidity values for a 42- year period (1976 - 2018) was retrieved and used in the analysis to find the trend of urban heat phenomenon. Alongside, a developed questionnaire had a response from 2,083 people. The findings reveal among other things that there’s a 2ºC rise in mean annual temperature from 1976 to 2018. Additionally, the data shows that the past 4 years have had high mean temperature values. Subjectively, 1, 271 residence representing 61% voted in the “slightly warm-hot” range on the thermal sensation scale. Majority of the respondents across all the ages indicated how uncomfortable their outdoor spaces have become in recent times. 36% of the respondents attributed this discomfort to the lack of greenery with over 95% across all ages indicating that Kumasi city has lost its greenery and green spaces to buildings and other infrastructural activities. Whiles climate change and global warming have both become a global menace, the onus lies on individual countries and for that matter, various city authorities to make a conscious effort in planning our cities with greenery to alleviate the menace we already find ourselves. A conscious effort to retrieve and restore encroached green spaces must be undertaken by the city authorities while the parks and gardens division ought to be efficiently resourced to manage our green spaces.
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