Characteristics of Seasonal Rainfall and its Distribution Over Bale Highland, Southeastern Ethiopia

Legese, W; Koricha, Deriba; Ture, Kassahun

doi:10.4172/2157-7617.1000443

Cited by 18 publications

(12 citation statements)

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“…The length of growing periods for the small rainy season over Bale Highlands ranges between 69 and 80 days (table 1). The average value of length of growing period during main rainy season over Bale Highlands was 110 days stated by [27]. The current study was agree with previous finding Legese [27].…”

Section: Length Of the Growing Period (Lgp) For Base Yearsupporting

confidence: 92%

“…The average value of length of growing period during main rainy season over Bale Highlands was 110 days stated by [27]. The current study was agree with previous finding Legese [27]. For this finding the average value of length of growing period during main rainy season over Bale Highlands was 110 days (table 5).…”

Section: Length Of the Growing Period (Lgp) For Base Yearsupporting

confidence: 91%

“…Overall, start of the season ranges between 22 nd to 29 th days of the years which indicate that start of the season does not vary significantly over bale highland, this result agrees with the finding by [9], which stated that Bale Highlands possess one Homogeneous Rainfall Regime. The average onset of the main growing season (Kiremt) which is consistent with the previous work of Segele and Lamb [26] was July 1 st over Bale Highland which is lies in the 1 st dekade of July [27]. In this study, on the average the main rainy season (Kiremt) starts on July 8 th (Day of the year (DOY, 190) ( [25].…”

Section: Start Of Kiremt and Belg Seasons (Cessation) For Base Year (supporting

confidence: 90%

“…(1986-2005) The average value of length of growing period (LGP) for small rainy season over Bale Highlands was 73 days in previous study 30 years of rainfall data for periods of (1985 to 2014) [27]. In this study, the average value of length of growing period (LGP) for small rainy season over Bale Highlands was 84 days (table 5).…”

Section: Length Of the Growing Period (Lgp) For Base Yearsupporting

confidence: 45%

“…The small rainy season (Belg) starts or onset period over Bale Highlands in average was March 28 th day of the year (DOY, 88) [27]. The result presented in Table 5 (table 1).…”

Section: Start Of Kiremt and Belg Seasons (Cessation) For Base Year (mentioning

confidence: 95%

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Impact of Climate Change on Seasonal Rainfall Patterns over Bale Highlands, Southeastern Ethiopia

Jima¹,

Korecha²,

Tur³

2019

IJEC

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The objective of this study was evaluates the impact of climate change on seasonal rainfall patterns over Bale Highlands by using climate data from National Meteorology Agency and downscaling Coordinated Regional Climate Downscaling Experiment (Cordex) output data from cordex Africa. In order to estimate the climate change signal scenarios of rainfall and temperature were developed for periods of 30 years (2011 to 2100). The outputs GCM model for the RCP4.5 and RCP8.5 emission scenarios were used to produce the future scenarios. Instat V3.7 software was governed for this study. The sample size for this study was 768 respondents randomly selected. Results of R 2=0.58 for temperature over study area which shows that there is a good correlation between downscaled and observed data. The study shows that there is an overall increasing trend in seasonal maximum and minimum temperatures and decreasing of seasonal rainfall from the base period. The onset, cessation and Length of Growing Periods in both Belg and Kiremt season shifts from the base years. Observational data, GCM date and farmer's perception showed similar result and there is a shift of seasons over Bale highlands form 2 days to dekade. During Kiremt season there was decreasing of LGP from 109 to 101. Similarly, the LGP of Belg was reduced from 84 days to 48 days at the end of 21 st century. The onset of Belg season at the end of 21st century will shifts to May. The anticipated shift of Kiremt season will merging to Bega (dry season) with this the author recommended the local farmers or any concerned body uses this information which is significant amount of rainfall require appropriate acclimatization strategies to minimize risks, increase crop productivity, and avert food insecurity of the area.

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Section: Length Of the Growing Period (Lgp) For Base Yearsupporting

confidence: 92%

Section: Length Of the Growing Period (Lgp) For Base Yearsupporting

confidence: 91%

Section: Start Of Kiremt and Belg Seasons (Cessation) For Base Year (supporting

confidence: 90%

Section: Length Of the Growing Period (Lgp) For Base Yearsupporting

confidence: 45%

“…The small rainy season (Belg) starts or onset period over Bale Highlands in average was March 28 th day of the year (DOY, 88) [27]. The result presented in Table 5 (table 1).…”

Section: Start Of Kiremt and Belg Seasons (Cessation) For Base Year (mentioning

confidence: 95%

See 3 more Smart Citations

Impact of Climate Change on Seasonal Rainfall Patterns over Bale Highlands, Southeastern Ethiopia

Jima¹,

Korecha²,

Tur³

2019

IJEC

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Modeling outgoing long-wave radiation based on the atmospheric moisture parameters and correlated to the air temperature in Ethiopia

Wondie

Abeje

2022

Clim Dyn

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Rainfall changes perceived by farmers and captured by meteorological data: two sides to every story

Hubertus,

Groth,

Teucher

et al. 2023

Reg Environ Change

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Subsistence farmers with high dependency on natural resources are exceptionally vulnerable to rainfall changes. Besides, they are in the front row when it comes to observing these changes. Studies that systematically investigate similarities and differences between measured and perceived rainfall changes are typically limited to trends in rainfall amounts, thereby disregarding changes in extreme events, rainy season durations, and timing. We address this gap by contrasting rainfall changes perceived by subsistence farmers in the Ethiopian highlands with meteorological daily rainfall data derived from the Climate Hazards Group Infrared Precipitation with Stations (CHIRPS). We applied nine distinct metrics for rainfall dynamics, accounting for rainfall variability, including extreme events and changes in the onset and cessation of the two rainy seasons. Farmers perceived increasingly unreliable rainfall for both the short and the long rainy seasons, with later onset and earlier cessation, increasing rainfall intensity, and increasing occurrence of untimely rainfall and droughts. This partially disagrees with the CHIRPS data that indicate most significant rainfall changes for the short rainy season only. Since the early 1980s, this season has been experiencing decreasing rainfall amounts, with high variability between years and an increasingly uncertain – yet delayed – onset. In contrast, the long rainy season experienced little changes in rainfall. Our results point towards changing farmers' water availability and water demand as an explanation for the perceived deteriorating rainfall conditions. As farmers’ perceptions partly diverge from meteorological observations, both data sources should be used complementarily to improve our understanding of climatic change.

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Characteristics of Seasonal Rainfall and its Distribution Over Bale Highland, Southeastern Ethiopia

Cited by 18 publications

References 0 publications

Impact of Climate Change on Seasonal Rainfall Patterns over Bale Highlands, Southeastern Ethiopia

Impact of Climate Change on Seasonal Rainfall Patterns over Bale Highlands, Southeastern Ethiopia

Modeling outgoing long-wave radiation based on the atmospheric moisture parameters and correlated to the air temperature in Ethiopia

Rainfall changes perceived by farmers and captured by meteorological data: two sides to every story

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