Trends in Vegetation Response to Drought in Sudano-Sahelian Part of Northern Nigeria

Fabeku, Blessing Bolarinwa; Okogbue, Emmanuel Chilekwu

doi:10.4236/acs.2014.44052

Cited by 10 publications

(8 citation statements)

References 11 publications

(6 reference statements)

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“…This has involved monitoring of El Niño southern oscillation (ENSO) and other oceanic and atmospheric predictors of climate (Yasunaka and Hawana 2005;Hasternrath et al 2004); and sectoral assessment of impacts of climate change (Fabeku and Okogbue 2014;Tonnang et al 2010;Kundezewicz et al 2008;Hansen and Indeje 2004). Biophysical assessment of global warming has led to improvement in the understanding of interactions between atmosphere, sea, and land surfaces; advances in modeling and prediction of the global climate system.…”

Section: Introductionmentioning

confidence: 99%

Climate variability and causes: from the perspective of the Tharaka people of eastern Kenya

2017

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The study assessed community understanding of climate variability in semi-arid Tharaka sub-county, Kenya. The study used four focus group discussions (FGD) (N = 48) and a household survey (N = 326) to obtain information from four agro-ecological zones (AEZs). The results were synthesized and descriptively presented. People in Tharaka sub-county are familiar with the term climate change and associate it with environmental degradation. There are, however, misconceptions and gaps in understanding the causes of climate change. There was a mismatch between community and individual perception of onset and cessation of rainfall-evidence that analysis of the impact of climate change should take into account the scale of interaction. To improve climate change knowledge, there is a need for climate change education by scientific institutions-to provide information on local climatic conditions and global and regional drivers of climate change to local communities.

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Section: Introductionmentioning

confidence: 99%

Climate variability and causes: from the perspective of the Tharaka people of eastern Kenya

2017

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“…The warmest months are March and April when daytime temperature exceeds 40 o C [4] . According to [18] , rainfall in the zone is highly variable and the onset of rain is erratic. The dry season is from October to early May, while the wet season is concentrated in a short period that runs from May to September [4] [19] .…”

Section: Hot Semi-arid Climatementioning

confidence: 99%

“…The rainfall peak in August is due to the presence of ITD which drives the maritime air mass across the zone. Typical average annual rainfall values range between 150 mm to less than 1000 mm [4][14] [18] . It was stated that the zone is ravaged [20] with prolong increasing evapotranspiration, drought and desertification due to low rainfall amount.…”

Section: Hot Semi-arid Climatementioning

confidence: 99%

Planetary Layer Lapse Rate Comparison of Tropical,Montane and Hot Semi-Arid Climates of Nigeria

Edokpa

Ede

2020

j. of atmos. sci. res.

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This study assessed the pattern of planetary layer lapse rate across the major climate belts of Nigeria. Six years’ data (2010-2015) for air temperature values between 1000 mbar and 850 mbar atmospheric pressure levels were acquired from Era-Interim Re-analysis data centre. The data was retrieved at 6-hourly synoptic hours: 0000H, 0600H, 1200H and 1800H at 0.125o grid resolution. Results showed that the lower tropospheric layers throughout the various climate belts has a positive lapse rate. Findings also revealed that the average annual lapse rate condition were: Tropical wet zone (Port Harcourt) -5.6 oC/km; Bi-modal Tropical continental zone (Enugu) 5.8 oC/km; Montane zone (Jos) -6.5 oC/km; Mono-modal Tropical continental zone (Kano) -6.6 oC/km; and Hot semi-arid zone (Maiduguri) -6.6 oC/km. This average values presents the lapse rates to be close to the Saturated Adiabatic Lapse Rate (SALR). Average diurnal results for the climate belts showed that lapse rate is higher during the afternoon and transition periods than the rest periods and increases from the coastal areas northward. The seasonal periods of highest lapse rates during the day time are from December – May (i.e. 5.8-9.5 oC/km) with slight decrease from June – November. The positive lapse rate of range -1.8 – -5.9 oC/km observed during the period of dawn across the entire region showed that infrared radiation was still being released and modified by less energetic mechanical turbulence that characterizes the surface layer across Nigeria. This also indicates that global warming is real and in substantial effect. The study findings imply that conditional instability prevailed over the entire region, therefore, the planetary layer environment will be of slow to moderate dispersive potential and will require forceful mechanism to lift emissions are introduced into it. It is recommended that industrial stacks are above 50 m to enhance the dispersion of emissions aloft.

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“…Study Area The Sudano-Sahelian region of Nigeria ( Figure 1) lies between latitude 10ÚN and 14ÚN and longitude 4ÚE and 14ÚE (Fabeku & Okogbue, 2014) in the north extreme of the country. The vegetation is savannah although less dense compared to the guinea savannah beyond its southern boundary.…”

Section: 1mentioning

confidence: 99%

Rainfall variability and drought during the sowing season and mid-season of rice in the Sudano-Sahelian Region of Nigeria

Atedhor¹

2019

J. Cam. Acad. Sci

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This paper examines rainfall variability and change as well as drought intensities in the Sudano-Sahelian region of Nigeria with a focus on the sowing season (June-July) and mid-season (August-October) of the farming calendar of rice. Monthly rainfall and rain-days data for Sokoto, Gusau, Katsina, Kano, Potiskum, Nguru, Maiduguri and Yola for 65 years (1951-2015) were sourced from the archives of the Nigerian Meteorological Agency. Rainfall decreased in Katsina and Nguru at annual rates of 0.69mm and 1.12mm respectively while it increased in Sokoto, Gusau, Kano, Potiskum, Maiduguri and Yola at annual rates of 0.39mm, 0.34mm, 03.77mm, 0.18mm and 0.37mm respectively during the sowing season. Rainfall decreased at annual rates of 1.38mm, 1.96mm, 0.57mm, 0.84mm, 0.71mm and 1.54mm in Sokoto, Katsina, Potiskum, Nguru, Maiduguri and Yola respectively while it increased at 2.31mm and 3.70mm in Gusau and Kano respectively. Rainfall changed significantly in Nguru during the sowing season and Sokoto Katsina, Kano, and Yola during the mid-season. Rain-days declined annually at the rate of 0

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Trends in Vegetation Response to Drought in Sudano-Sahelian Part of Northern Nigeria

Cited by 10 publications

References 11 publications

Climate variability and causes: from the perspective of the Tharaka people of eastern Kenya

Climate variability and causes: from the perspective of the Tharaka people of eastern Kenya

Planetary Layer Lapse Rate Comparison of Tropical,Montane and Hot Semi-Arid Climates of Nigeria

Rainfall variability and drought during the sowing season and mid-season of rice in the Sudano-Sahelian Region of Nigeria

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