Spatiotemporal variability and time series trends of rainfall over northwestern parts of Ethiopia: the case of Horro Guduru Wollega Zone
This study examined the variability and trend of rainfall over Horro Guduru Wollega Zone. Studies such as this have paramount importance in countries and areas where rain-fed agriculture is predominant. Datasets for analysis were obtained from the National Meteorological Agency of Ethiopia (NMA) fro...
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| Veröffentlicht in: | Environmental monitoring and assessment 2021-06, Vol.193 (6), p.367-367, Article 367 |
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| creator | Feke, Belay Ejigu Terefe, Tadesse Ture, Kassahun Hunde, Debela |
| description | This study examined the variability and trend of rainfall over Horro Guduru Wollega Zone. Studies such as this have paramount importance in countries and areas where rain-fed agriculture is predominant. Datasets for analysis were obtained from the National Meteorological Agency of Ethiopia (NMA) from 1987 to 2016 and Climate Hazard Group InfraRed Precipitation (CHIRPS) 1987–2019 with the station portal. Monthly rainfall with temporal variability ranging from 9.77 to 141.93% was observed. High variable (CV > 30%) and less variable (CV |
| doi_str_mv | 10.1007/s10661-021-09141-8 |
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P
< 0.05) and less variable (CV < 20%) annual total rainfall was recorded at 24 stations over 30 years. Declining annual rainfall was observed over 30 and 33 years. Non-significantly different (
P
< 0.05) and less variable (CV < 20%) average decadal rainfall ranging from 1342.6 to 1372.8 mm was observed during the last 33 years. The study area had experienced a rainfall with decreasing trends almost over all time scales. These might have been resulting in failure of agricultural production that necessitates developing and implementing systematic planning and management activities in the crop calendar under the face of changing rainfall patterns.</description><identifier>ISSN: 0167-6369</identifier><identifier>EISSN: 1573-2959</identifier><identifier>DOI: 10.1007/s10661-021-09141-8</identifier><language>eng</language><publisher>Cham: Springer International Publishing</publisher><subject>Agricultural production ; Agriculture ; Annual rainfall ; Atmospheric Protection/Air Quality Control/Air Pollution ; Crop calendars ; Earth and Environmental Science ; Ecology ; Ecotoxicology ; Environment ; Environmental hazards ; Environmental Management ; Environmental monitoring ; Environmental science ; Monitoring/Environmental Analysis ; Monthly rainfall ; Rain ; Rainfall ; Rainfall patterns ; Rainfed farming ; Seasons ; Temporal variability ; Temporal variations ; Time series ; Trends ; Variability</subject><ispartof>Environmental monitoring and assessment, 2021-06, Vol.193 (6), p.367-367, Article 367</ispartof><rights>The Author(s), under exclusive licence to Springer Nature Switzerland AG 2021</rights><rights>The Author(s), under exclusive licence to Springer Nature Switzerland AG 2021.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c352t-42e12ee68ba55e9321e44e2a355c56bd199fb20707a24977f0c34e1df83409433</citedby><cites>FETCH-LOGICAL-c352t-42e12ee68ba55e9321e44e2a355c56bd199fb20707a24977f0c34e1df83409433</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10661-021-09141-8$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10661-021-09141-8$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27903,27904,41467,42536,51297</link.rule.ids></links><search><creatorcontrib>Feke, Belay Ejigu</creatorcontrib><creatorcontrib>Terefe, Tadesse</creatorcontrib><creatorcontrib>Ture, Kassahun</creatorcontrib><creatorcontrib>Hunde, Debela</creatorcontrib><title>Spatiotemporal variability and time series trends of rainfall over northwestern parts of Ethiopia: the case of Horro Guduru Wollega Zone</title><title>Environmental monitoring and assessment</title><addtitle>Environ Monit Assess</addtitle><description>This study examined the variability and trend of rainfall over Horro Guduru Wollega Zone. Studies such as this have paramount importance in countries and areas where rain-fed agriculture is predominant. Datasets for analysis were obtained from the National Meteorological Agency of Ethiopia (NMA) from 1987 to 2016 and Climate Hazard Group InfraRed Precipitation (CHIRPS) 1987–2019 with the station portal. Monthly rainfall with temporal variability ranging from 9.77 to 141.93% was observed. High variable (CV > 30%) and less variable (CV < 20%) rainfall was observed in the CHIRPS data records. Rainfall during most months of the last 30 and 33 years showed a decreasing trend. Rainfalls with temporal variability ranging from 12.7 to 75.92% and from 8.11 to 43.45% were observed during the 3-month seasons, respectively. Rainfall over the 3-month seasons of the last 30 and 33 years showed a decreasing trend. The average total rainfall ranging from 107.203 to 1016.82 mm and from 122.8 to 1147.9 mm, with variability from 9.163 to 55.7% and from 7.831 to 36.68% were observed during the Belg, Kiremt, and Bega seasons of the last 30 and 33 years, respectively. A decrease in rainfall was tested over these three seasons of the last 30 and 33 years. Significantly different (
P
< 0.05) and less variable (CV < 20%) annual total rainfall was recorded at 24 stations over 30 years. Declining annual rainfall was observed over 30 and 33 years. Non-significantly different (
P
< 0.05) and less variable (CV < 20%) average decadal rainfall ranging from 1342.6 to 1372.8 mm was observed during the last 33 years. The study area had experienced a rainfall with decreasing trends almost over all time scales. These might have been resulting in failure of agricultural production that necessitates developing and implementing systematic planning and management activities in the crop calendar under the face of changing rainfall patterns.</description><subject>Agricultural production</subject><subject>Agriculture</subject><subject>Annual rainfall</subject><subject>Atmospheric Protection/Air Quality Control/Air Pollution</subject><subject>Crop calendars</subject><subject>Earth and Environmental Science</subject><subject>Ecology</subject><subject>Ecotoxicology</subject><subject>Environment</subject><subject>Environmental hazards</subject><subject>Environmental Management</subject><subject>Environmental monitoring</subject><subject>Environmental science</subject><subject>Monitoring/Environmental Analysis</subject><subject>Monthly rainfall</subject><subject>Rain</subject><subject>Rainfall</subject><subject>Rainfall patterns</subject><subject>Rainfed 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Zone</atitle><jtitle>Environmental monitoring and assessment</jtitle><stitle>Environ Monit Assess</stitle><date>2021-06-01</date><risdate>2021</risdate><volume>193</volume><issue>6</issue><spage>367</spage><epage>367</epage><pages>367-367</pages><artnum>367</artnum><issn>0167-6369</issn><eissn>1573-2959</eissn><abstract>This study examined the variability and trend of rainfall over Horro Guduru Wollega Zone. Studies such as this have paramount importance in countries and areas where rain-fed agriculture is predominant. Datasets for analysis were obtained from the National Meteorological Agency of Ethiopia (NMA) from 1987 to 2016 and Climate Hazard Group InfraRed Precipitation (CHIRPS) 1987–2019 with the station portal. Monthly rainfall with temporal variability ranging from 9.77 to 141.93% was observed. High variable (CV > 30%) and less variable (CV < 20%) rainfall was observed in the CHIRPS data records. Rainfall during most months of the last 30 and 33 years showed a decreasing trend. Rainfalls with temporal variability ranging from 12.7 to 75.92% and from 8.11 to 43.45% were observed during the 3-month seasons, respectively. Rainfall over the 3-month seasons of the last 30 and 33 years showed a decreasing trend. The average total rainfall ranging from 107.203 to 1016.82 mm and from 122.8 to 1147.9 mm, with variability from 9.163 to 55.7% and from 7.831 to 36.68% were observed during the Belg, Kiremt, and Bega seasons of the last 30 and 33 years, respectively. A decrease in rainfall was tested over these three seasons of the last 30 and 33 years. Significantly different (
P
< 0.05) and less variable (CV < 20%) annual total rainfall was recorded at 24 stations over 30 years. Declining annual rainfall was observed over 30 and 33 years. Non-significantly different (
P
< 0.05) and less variable (CV < 20%) average decadal rainfall ranging from 1342.6 to 1372.8 mm was observed during the last 33 years. The study area had experienced a rainfall with decreasing trends almost over all time scales. These might have been resulting in failure of agricultural production that necessitates developing and implementing systematic planning and management activities in the crop calendar under the face of changing rainfall patterns.</abstract><cop>Cham</cop><pub>Springer International Publishing</pub><doi>10.1007/s10661-021-09141-8</doi><tpages>1</tpages></addata></record> |
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| subjects | Agricultural production Agriculture Annual rainfall Atmospheric Protection/Air Quality Control/Air Pollution Crop calendars Earth and Environmental Science Ecology Ecotoxicology Environment Environmental hazards Environmental Management Environmental monitoring Environmental science Monitoring/Environmental Analysis Monthly rainfall Rain Rainfall Rainfall patterns Rainfed farming Seasons Temporal variability Temporal variations Time series Trends Variability |
| title | Spatiotemporal variability and time series trends of rainfall over northwestern parts of Ethiopia: the case of Horro Guduru Wollega Zone |
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