Implications of climate, land-use and land-cover changes for pastoralism in eastern Sudan

Sulieman, Hussein M.; Elagib, Nadir Ahmed

doi:10.1016/j.jaridenv.2012.05.001

Cited by 56 publications

(50 citation statements)

References 34 publications

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“…[19] found an increasing trend in mean, maximum and minimum temperature over the whole Sudan in line with a significant decline of precipitation over the northern half of Sudan. As reported by [17], Gadarif State had observed a significant climate warming, increased precipitation variability and seasonality and 2006. In addition, [4] and [18] showed that the climate of Gadarif State has a big changing from humid to extreme drought in a period of 1961-2013.…”

Section: Climate Data and Drought Indices Analysesmentioning

confidence: 68%

“…variables [16]. In 2009, the Sorghum productivity was a decline of 42% of the normal yield; also, the annual precipitation amount was 87% of the normal [17].…”

Section: Data Collection and Analysismentioning

confidence: 99%

“…Drastic decrease of natural vegetation areas resulted in progressive loss and degradation of grazing area in most of the Gadarif State [17]. The dynamic rate of vegetation cover, deterioration and decline were terribly speedy over the few decades.…”

Section: Food Security Analysismentioning

confidence: 99%

“…According to [17], the extension of cultivated areas resulted in the drastic decrease in the natural vegetation lands. [10], reported that the Sudan Government's new agricultural policies are focusing more on MRA ventures to increase the grain production through expansion of the cultivated area only, not through increased per unit yield.…”

Section: Food Security Analysismentioning

confidence: 99%

See 3 more Smart Citations

Investigation of Climate and Land Use Policy Change Impacts on Food Security in Eastern Sudan, Gadarif State

Yagoub¹,

Li²,

Musa³

et al. 2017

JGIS

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The aims of this research were to investigate the impacts of climate variations on land use policies, food security and vegetation cover in Gadarif State (eastern Sudan) during 1961 to 2013. Analysis of precipitation and temperature time series revealed that the annual precipitation was decreasing while the temperature was increased in the study area. Precipitation was decreasing at a rate of −50.3 mm/10a, while the temperature was increasing at a rate of 0.02˚C/10a. The result of both SPEI and SPI showed that the Gadarif State has been changed to a high frequency of drought during 1961-2013.

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Section: Climate Data and Drought Indices Analysesmentioning

confidence: 68%

“…variables [16]. In 2009, the Sorghum productivity was a decline of 42% of the normal yield; also, the annual precipitation amount was 87% of the normal [17].…”

Section: Data Collection and Analysismentioning

confidence: 99%

Section: Food Security Analysismentioning

confidence: 99%

Section: Food Security Analysismentioning

confidence: 99%

See 2 more Smart Citations

Investigation of Climate and Land Use Policy Change Impacts on Food Security in Eastern Sudan, Gadarif State

Yagoub¹,

Li²,

Musa³

et al. 2017

JGIS

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“…최근에는전세계적으로여러연구자들 (Kafle and Bruins, 2009;Sulieman and Elagib, 2012;Liu et al, 2013)에 의해 서 기후변화에 따른 건조지수의 지역적 변동을 파악하고 자 하는 연구가 수행된 바 있다. 또한 미래 기후변화 시나 리오를 반영하여 미래 증발산량변화 (Chattopadhyay and Hulme, 1997;Li et al, 2012)와 미래 강수 및 기온 변화 (Ahn et al, 2008;Schlünzen et al, 2010;Im et al, 2011;Lee et al, 2011;Park et al, 2013) …”

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Climate Aridity/humidity Characteristics in Seoul According to Changes in Temperature and Precipitation Based on RCP 4.5 and 8.5

Rim¹,

Kim²

2014

Journal of Korea Water Resources Association

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In this study, monthly and annual aridity indices which are the ratios of precipitation to potential evapotranspiration in Seoul climate measurement station were analyzed for past 50 years (1961～2010), and the ratio of aridity index simulated by climate change scenarios (RCP 4.5 and 8.5) for each future period (2011～2040, 2041～2070, 2071～2100) to aridity index for the past period (1971～2000) was analyzed. Furthermore, 5 different potential evapotranspiration equations (FAO P-M, Penman, Makkink, PriestleyTaylor, Hargreaves) were applied to analyze the effect of potential evapotranspiration equation on estimating aridity index and aridity index variation ratio (%). The study results indicate that the monthly precipitation, average temperature and potential evapotranspiration were increased in each future period as compared to past period for both RCP 4.5 and RCP 8.5. Furthermore, winter period showed more significant increase of potential evapotranspiration than summer period, but aridity index showed different patterns as compared with potential evapotranspiration reflecting the influence of precipitation. Therefore, it is necessary to make preparation for the increment of winter evapotranspiration in terms of water resources management. The monthly and annual aridity indices based on future climate change scenarios were greatly different according to potential evapotranspiration equations; however, monthly and annual patterns of aridity index variation ratio (%) in the future period as compared to past period were very similar regardless of applied potential evapotranspiration equation.

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Lagrangian tracing of Sahelian Sudan moisture sources

2015

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The Sahelian Sudan is an arid to semiarid region that depends on the seasonal rainfall as the main source of water, but its rainfall has large interannual variability. Such dry regions usually have their main moisture sources elsewhere; thus, the rainfall variability is directly related to the moisture transport. This study seeks to identify source regions of water vapor for Sahelian Sudan during the monsoon period, from July to September. We have used the Lagrangian trajectory model FLEXPART driven by ERA-Interim reanalysis for the time period 1998 to 2008. The results show that most of the air masses that reach this region during the monsoon period have their major origins over the Arabian Peninsula, Central Africa, or are associated with the tropical easterly jet. Flow associated with Intertropical Convergence Zone contributes almost half of the total precipitated water; most of it comes from Central Africa. This suggests that moisture recycling is the major contributor, compared to Oceanic sources. The flows from the northeast (Arabian Peninsula and north Asia) and east (Horn of Africa and north Indian Ocean) contribute about one third of the precipitated water. The rest of precipitated water comes from the Mediterranean, subtropical Atlantic, and western Sahel, all with smaller contribution. Our results also indicate that different subregions of Sahelian Sudan have different moisture sources. Such result needs to be taken into account in seasonal forecasting practices.

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Implications of climate, land-use and land-cover changes for pastoralism in eastern Sudan

Cited by 56 publications

References 34 publications

Investigation of Climate and Land Use Policy Change Impacts on Food Security in Eastern Sudan, Gadarif State

Investigation of Climate and Land Use Policy Change Impacts on Food Security in Eastern Sudan, Gadarif State

Climate Aridity/humidity Characteristics in Seoul According to Changes in Temperature and Precipitation Based on RCP 4.5 and 8.5

Lagrangian tracing of Sahelian Sudan moisture sources

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