A change comparison of heat wave aspects in climatic zones of Nigeria

Ragatoa, D. Saberma; Ogunjobi, K. O.; Klutse, Nana Ama Browne; Okhimamhe, A. A.; Eichie, Julia Ofure

doi:10.1007/s12665-019-8112-8

Cited by 13 publications

(9 citation statements)

References 34 publications

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“…Compared to the European summer's highest HWMId of 24-36 [70], the highest HWMId recorded in Tanzania from 1983-2016 is 42 (in 1999). In Nigeria, the highest HWMId peak value of 32 was recorded in 1990 [34]. In a recent study by [71] in Kenya, the highest HWMId peak value of 22.64 was recorded in 2015.…”

Section: Discussion Of Key Findingsmentioning

confidence: 91%

“…As reported by [47], heatwaves in Tanzania largely occur from October to March, during the dry season. This index has been used widely in Africa for impact assessment [33,34,71]. In this paper, the CHIRTS high-resolution satellite remotely sensed and station-blended temperature dataset was employed to detect heatwaves occurrence during the reference period and to examine their patterns and magnitudes in the 21st century in Tanzania using high-resolution multimedian RCP scenarios (RCP4.5).…”

Section: Countrymentioning

confidence: 99%

“…A detailed description of this model can be found here [76,77]. These models have been widely used, particularly in Africa, for heatwave detection [33,34,71]. RCP4.5 is an intermediate scenario that reasonably represents the potential characteristics of future heatwave events in Tanzania.…”

Section: Data Descriptionmentioning

confidence: 99%

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Characteristics of Enhanced Heatwaves over Tanzania and Scenario Projection in the 21st Century

et al. 2021

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Extreme hot temperature is dangerous to the bioeconomy, and would worsen with time. Ambient heatwaves accompanied by unusual droughts are major threats to poverty eradication in Tanzania. Due to sparsity of observation data and proper heatwave detection metrics, there has been a paucity of knowledge about heatwave events in Tanzania. In this study, the Heatwave Magnitude Index daily (HWMId) was adopted to quantitatively analyze heatwave characteristics throughout Tanzania at mid-21st century (2041–2070) and end of 21st century (2071–2100), relative to the reference period (1983–2012) using the CHIRTS-daily quasi-global high-resolution temperature dataset and climate simulations from a multi-modal ensemble of median scenarios (RCP4.5, from CORDEX-Africa). The results showed that moderate to super-extreme heatwaves occurred in Tanzania between 1983 and 2012, particularly in 1999, when ultra-extreme heatwaves (HWMId > 32) occurred in the Lake Victoria basin. It is projected that by mid-21st century, the upper category of HWMId would be hotter and longer, and would occur routinely in Tanzania. The spatial extent of all of the HWMId categories is projected to range from 34% to 73% by the end of the 21st century with a duration of 8 to 35 days, compared to 1 to 5 days during the reference period. These findings will contribute to increasing public awareness of the need for adaptation.

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Section: Discussion Of Key Findingsmentioning

confidence: 91%

Section: Countrymentioning

confidence: 99%

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Characteristics of Enhanced Heatwaves over Tanzania and Scenario Projection in the 21st Century

et al. 2021

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“…Moreover, the general public in Africa often ignore the impact of high temperature as they seem to consider it as normal, although it could have substantial health effects and environment implications. For example, heatwave has dangerous effect on life expectancy, several stages of crop production as well as the ecological wellbeing in Africa [34]. These could explain why similar heatwaves in Europe could lead to thousands of deaths while heatwave impacts in Kenya are unknown.…”

Section: Discussionmentioning

confidence: 99%

“…The country is largely arid and semi-arid with distinct spatial variation of surface air temperature influenced by diverse climatic features and complex geomorphology and population density [30]. The climate is characterized by a bimodal rainfall pattern [32][33][34]. These seasons are driven by the Inter-Tropical Convergence Zone (ITCZ) which influences the distribution and patterns of rainfall and temperature fluctuations over the country [9,11].…”

Section: Study Areamentioning

confidence: 99%

Heatwaves in Kenya 1987–2016: Facts from CHIRTS High Resolution Satellite Remotely Sensed and Station Blended Temperature Dataset

et al. 2020

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As global temperatures continue to rise unabated, episodes of heat-related catastrophes across the world have intensified. In Kenya, heatwave phenomena and their associated impacts are ignored and neglected due to several reasons, including unreliable and inconsistent weather datasets and heatwave detection metrics. Based on CHIRTS satellite infrared estimates and station blended temperature, this study investigated the spatiotemporal distribution of the heatwave events over Kenya during 1987–2016 using the Heatwave Magnitude Index daily (HWMId). The results showed that contrary to the absence of heatwave records in official national and international disaster database about Kenya, the country experienced heatwaves ranging from less severe (normal) to deadly (super-extreme) between 1987 and 2016. The most affected areas were located in the eastern parts of the country, especially in Garissa and Tana River, and in the west-northern side around the upper side of Turkana county. It was also found that the recent years’ heatwaves were more severe in magnitude, duration, and spatial extent. The highest magnitude of the heatwaves was recorded in 2015 (HWMId = 22.64) while the average over the reference period is around 6. CHIRTS and HWMId were able to reveal and capture most critical heatwave events over the study period. Therefore, they could be used respectively as data source and detection metrics, for heatwaves disaster emergency warning over short period as well as for long-term projection to provide insight for adaptation strategies.

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Climate Change Impact on Nigerian Ecology, Vegetation/Forest, Carbon and Biomass Management

Ita¹,

Ogbemudia

2023

Springer Climate

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A change comparison of heat wave aspects in climatic zones of Nigeria

Cited by 13 publications

References 34 publications

Characteristics of Enhanced Heatwaves over Tanzania and Scenario Projection in the 21st Century

Characteristics of Enhanced Heatwaves over Tanzania and Scenario Projection in the 21st Century

Heatwaves in Kenya 1987–2016: Facts from CHIRTS High Resolution Satellite Remotely Sensed and Station Blended Temperature Dataset

Climate Change Impact on Nigerian Ecology, Vegetation/Forest, Carbon and Biomass Management

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