Monitoring Day and Night-Time Situation of Urban Heat Island and Possible Adaptation Measures in Douala, Cameroon DOI Open Access

M. E. Awuh

Journal of Geoscience and Environment Protection, Journal Year: 2021, Volume and Issue: 09(08), P. 163 - 176

Published: Jan. 1, 2021

Urban Heat Island (UHI) has the potential to directly influence health and welfare of urban residents. The study employed a traditional method called “paired measurement program” analyze effects four land use/land- cover patterns on intra-urban air temperature variations in Douala Metropolis, Cameroon under different atmospheric conditions. This also investigated possible adaptation measures by inhabitants combat heat island effects. result revealed variation selected transects. There was mix cool islands day, especially during rainy seasons. daytime were strongly correlated amount tree shading. It observed that gradient formed at Central Business District (CBD) progressively lowered suburbs. thermal comfort classification for area ranges between 25.4°C 27°C, which is class where over 50% population feels stressed; range 32°C above, most suffers discomfort. In order investigate Douala, two hundred fifty questionnaires distributed analyzed using descriptive statistics. use various coping strategies adapt UHI identified include; stay indoors, drink plenty water, wear light clothing, go an A/C location, take shower, avoid outdoors, hat or head. widely used strategy drinking water. expensive nature makes it least strategy.

Language: Английский

Strengthening climate change adaptation capacity in Africa- case studies from six major African cities and policy implications DOI
Walter Leal Filho, Abdul‐Lateef Balogun, Desalegn Yayeh Ayal

et al.

Environmental Science & Policy, Journal Year: 2018, Volume and Issue: 86, P. 29 - 37

Published: May 11, 2018

Language: Английский

Citations

95
Numerical study on the urbanisation of Putrajaya and its interaction with the local climate, over a decade DOI
Kenobi Isima Morris, Andy Chan, Siti Aekbal Salleh

et al.

Urban Climate, Journal Year: 2016, Volume and Issue: 16, P. 1 - 24

Published: Feb. 26, 2016

Language: Английский

Citations

41
Assessing seasonal variations in urban thermal comfort and potential health risks using Physiologically Equivalent Temperature: A case of Ibadan, Nigeria DOI
Akinyemi Gabriel Omonijo

Urban Climate, Journal Year: 2017, Volume and Issue: 21, P. 87 - 105

Published: May 30, 2017

Language: Английский

Citations

31
A Correlation Analysis of the Relationship between Land Use and Land Cover/Land Surface Temperature in Abuja Municipal, FCT, Nigeria DOI Open Access

M. E. Awuh,

P. O. Japhets,

M. C. Officha

et al.

Journal of Geographic Information System, Journal Year: 2019, Volume and Issue: 11(01), P. 44 - 55

Published: Jan. 1, 2019

This study adopted Remote Sensing and GIS in assessing Land Use Cover (LULC)/Land Surface Temperature (LST) variation Abuja Municipal, FCT from 1986 to 2016. The thirty-year period was chosen with the specific objective determine relationship between LULC LST using a correlation analysis. Three Landsat TM/ETM+ images of area (1986, 2001 2016) were used carry out study. found increase by 246.96 km2 (86.4%) areal extent built-up 2016; spatial on average 23.5°C 30.2°C. analysis showed strong coefficient determination (r2). analyses proved that classes strongly related LST. A observed at 0.8266, 0.9486, 0.77 for 1986, 2001, (r2) 2016 0.77, being indicator existed implying areas major drivers Municipal. To promote thermal comfort urban planning, control building patterns tree-planting exercises are some recommendations made.

Language: Английский

Citations

18
Land-Use/Land-Cover Dynamics in Calabar Metropolis Using a Combined Approach of Remote Sensing and GIS DOI Open Access

M. E. Awuh,

M. C. Officha,

A. O. Okolie

et al.

Journal of Geographic Information System, Journal Year: 2018, Volume and Issue: 10(04), P. 398 - 414

Published: Jan. 1, 2018

This paper assessed the dynamics in land use/land cover (LULC) within patterns of Calabar metropolis. The thermal imageries for 2002, 2006, 2008, 2010, 2012, 2014 and 2016 were obtained processed using remote sensing Arc GIS software package order to determine changes that have occurred LULC study area. result thematic maps overall accuracies was computed above 80 percent, which indicates an almost perfect agreement. findings this reveal that, classes by year assumed different dimensions change from sizes their previous comparison current sizes. Land-use pattern area characterized increase built up class, waterbody (though with a slightly negative 2010 2012) predominant trend dense vegetation bare classes; thus, indicating future changing trends will pose depleting threat LULC. has shown use is capable affecting certain characteristics environment such as surface temperature. recommends effort should be made government urban around city centers outliers embarking on reforestation.

Language: Английский

Citations

13
Leveraging data science and machine learning for urban climate adaptation in two major African cities: a HE2AT Center study protocol DOI Creative Commons
Christopher Jack, Craig Parker, Yao Etienne Kouakou

et al.

BMJ Open, Journal Year: 2024, Volume and Issue: 14(6), P. e077529 - e077529

Published: June 1, 2024

Introduction African cities, particularly Abidjan and Johannesburg, face challenges of rapid urban growth, informality strained health services, compounded by increasing temperatures due to climate change. This study aims understand the complexities heat-related impacts in these cities. The objectives are: (1) mapping intraurban heat risk exposure using health, socioeconomic, satellite imagery data; (2) creating a stratified heat–health forecast model predict adverse outcomes; (3) establishing an early warning system for timely heatwave alerts. ultimate goal is foster climate-resilient protecting disproportionately affected populations from hazards. Methods analysis research will acquire health-related datasets eligible adult clinical trials or cohort studies conducted Johannesburg between 2000 2022. Additional data be collected, including imagery. These resources aid hazards quantifying exposure, extent elevated morbidity. Outcomes determined advanced methods, statistical evaluation, machine learning deep techniques. Ethics dissemination has been approved Wits Human Research Committee (reference no: 220606). Data management follow procedures. results disseminated through workshops, community forums, conferences publications. deposition curation plans established line with ethical safety considerations.

Language: Английский

Citations

0
Enlarging the Human Climate Niche: Integrating Urban Heat Island in Urban Planning Interventions DOI Creative Commons

Rayan Mounayar,

Daniel Florentin

Urban Planning, Journal Year: 2022, Volume and Issue: 7(4)

Published: Oct. 10, 2022

This article explores the potential of linking scholarship on human climate niche and heat island research. One such combination leads to a better understanding liveability urban areas thereby offers contribution emerging healthy planning. Whereas former research has primarily focused parameters influencing mitigation solutions, it remains short quantifying these solutions conceptualising cumulative impacts health vulnerable populations. Based coupling ENVI-met computational simulation local zone method, this quantifies associates frequency intensity stress health-related symptoms in various settings. Drawing real-case intervention Paris, more effective comfort-focused approach planning interventions expand niche. should contribute transforming conception public spaces into “liveable refuges” for all population types, including most vulnerable. The results stemming from simulations measures help design hierarchy tackle islands according their ability reduce risk. is then adjusted other contributing healthy, liveable environment planning, making matter (multidimensional) care dwellers.

Language: Английский

Citations

2
Urban Heat Island and Land Use/Cover Dynamics Evaluation in Enugu Urban, Nigeria DOI Open Access
Chinyere Salome Ofordu,

C.F. Agbor,

Oseyomon John Aigbokhan

et al.

Journal of Geoscience and Environment Protection, Journal Year: 2022, Volume and Issue: 10(12), P. 354 - 372

Published: Jan. 1, 2022

This study specifically estimated the effect of land use/cover change (LULC) processes on surface temperature (LST) in Enugu urban and its suburbs. With Landsat images supervised classification technique, four LULC classes comprising built-up areas, vegetation, rock outcrop, bare ground/farmland areas were delineated. The LST was extracted from thermal bands images. rate cover between 2009 2018 showed that to 2013, increased 31.65% about 47.5%, while vegetation decreased 18.43% 11.23%. Also, periods witnessed 8.69 km2 being converted other surfaces. trend highest mean temperatures 34.5°C 32.26°C 2015. However, 2013 there a slight decrease 31.65°C which further 31.26°C 2009. suggests urbanisation could have significant micro-climate city. Result also revealed weak relationships throughout years. results heat intensity for rural general increase over years this are experiencing high be due loss artificial surfaces encroachment. Findings useful effective land-use planning, policy development management Nigeria, elsewhere.

Language: Английский

Citations

2
Geospatial Techniques, a Superlative Method to Assess Urban Heat Island Intensity: The Case of Abuja Municipal, Nigeria DOI Open Access

M. E. Awuh,

P. O. Japhets,

I. C. Enete

et al.

Journal of Geographic Information System, Journal Year: 2021, Volume and Issue: 13(01), P. 52 - 64

Published: Jan. 1, 2021

Most cities around the world, including Abuja Municipal are being faced with an undesirable increased in air temperature. This is indicated by increase non-porous, non-evaporating, highly thermal conductive surfaces such as concrete and asphalt, which has replaced vegetation biomass resulting to formation of urban heat island. There increasing need for studies on changing trend UHI intensity cities. research employed geospatial techniques determine island Municipal. Temperature characteristics over twenty selected rural locations Abuja, FCT were derived from satellite image 1986, 2001 2016 using “Extract Multi Values Point” tool ArcGIS 10.4. These transects pass various landscapes different environmental settings, aim understanding factors shaping city’s landscape. The intervals +15 years deliberately chosen ensure uniformity between datasets. results this analysis indicate that UHII been increasing, 1986-2016, giving credence spatial temporal land surface temperature, indicating development phases had hit full stride. periods under study (1986, 2016) also tested student “t” test significant difference temperature values acknowledge presence a substantial within area. result reveals calculated 2.50, 3.34, 5.57 respectively, higher than critical value at 0.05 1.73, thus, revealing differences stations be significant, strong Also, slide was observed Rubuchi Karmajiji areas having readings their counterparts areas, Asokoro Garki, −0.4°C −1.3°C. Since effectiveness reducing daytime temperatures depends strongly amount heating avoided, recommends preserving replicating greenery, light coloured facades measures reduce effects

Language: Английский

Citations

1
Monitoring Day and Night-Time Situation of Urban Heat Island and Possible Adaptation Measures in Douala, Cameroon DOI Open Access

M. E. Awuh

Journal of Geoscience and Environment Protection, Journal Year: 2021, Volume and Issue: 09(08), P. 163 - 176

Published: Jan. 1, 2021

Urban Heat Island (UHI) has the potential to directly influence health and welfare of urban residents. The study employed a traditional method called “paired measurement program” analyze effects four land use/land- cover patterns on intra-urban air temperature variations in Douala Metropolis, Cameroon under different atmospheric conditions. This also investigated possible adaptation measures by inhabitants combat heat island effects. result revealed variation selected transects. There was mix cool islands day, especially during rainy seasons. daytime were strongly correlated amount tree shading. It observed that gradient formed at Central Business District (CBD) progressively lowered suburbs. thermal comfort classification for area ranges between 25.4°C 27°C, which is class where over 50% population feels stressed; range 32°C above, most suffers discomfort. In order investigate Douala, two hundred fifty questionnaires distributed analyzed using descriptive statistics. use various coping strategies adapt UHI identified include; stay indoors, drink plenty water, wear light clothing, go an A/C location, take shower, avoid outdoors, hat or head. widely used strategy drinking water. expensive nature makes it least strategy.

Language: Английский

Citations

1