Variability and trend analysis of temperatures, rainfall, and characteristics of crop-growing season in the eastern zone of Tigray region, northern Ethiopia
In this study, auto-correlated Mann–Kendall (MK) and Sen’s slope estimator tests were utilized to determine trends of rainfall, temperatures, and characteristics of crop-growing season during 1980–2009. Moreover, the Van Belle and Hughes’ for homogeneity of general trend and Pettitt’s test for the o...
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| creator | Berhe, Amdom Gebremedhin Misgna, Solomon Habtu Abraha, Girmay Gebre-Samuel Abraha, Amanuel Zenebe |
| description | In this study, auto-correlated Mann–Kendall (MK) and Sen’s slope estimator tests were utilized to determine trends of rainfall, temperatures, and characteristics of crop-growing season during 1980–2009. Moreover, the Van Belle and Hughes’ for homogeneity of general trend and Pettitt’s test for the occurrence of abrupt changes were applied. On monthly,
Kiremt
(June–September) and annual time scale, the MK-trend test for rainfall exhibited non-significant increasing trend, while in
Belg
(February–May) rainfall season exhibited non-significant decreasing trend at the most of the stations. On the contrary, temperatures showed significant increasing trends in annual and
Belg
at the 5% significant level. In
Kiremt
season, however, the maximum temperature showed non-significant increasing, while the minimum temperature showed non-significant decreasing trend. Results of homogeneity for general trend obtained by the Van Belle and Hughes’ test seem fairly consistent with those of the MK-trend test. Moreover, results of Pettitt’s test indicated a homogeneous trend in monthly, annual, and seasonal rainfall series and no break point was distinguished, except few stations. On the contrary, the abrupt changes were found to be quite variable in temperatures. The study also found that trends of growing season characteristics (June–September) have not changed significantly at the 5% significant level. Nevertheless, the high coefficient of variation in
Kiremt
rainfall (21–31%) as well as dry spell length (25–43%) in conjunction with the short nature of the length of growing period (68–90 days) had negative implications to crop production in the eastern zone of Tigray region. |
| doi_str_mv | 10.1007/s00704-023-04364-w |
| format | Article |
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Kiremt
(June–September) and annual time scale, the MK-trend test for rainfall exhibited non-significant increasing trend, while in
Belg
(February–May) rainfall season exhibited non-significant decreasing trend at the most of the stations. On the contrary, temperatures showed significant increasing trends in annual and
Belg
at the 5% significant level. In
Kiremt
season, however, the maximum temperature showed non-significant increasing, while the minimum temperature showed non-significant decreasing trend. Results of homogeneity for general trend obtained by the Van Belle and Hughes’ test seem fairly consistent with those of the MK-trend test. Moreover, results of Pettitt’s test indicated a homogeneous trend in monthly, annual, and seasonal rainfall series and no break point was distinguished, except few stations. On the contrary, the abrupt changes were found to be quite variable in temperatures. The study also found that trends of growing season characteristics (June–September) have not changed significantly at the 5% significant level. Nevertheless, the high coefficient of variation in
Kiremt
rainfall (21–31%) as well as dry spell length (25–43%) in conjunction with the short nature of the length of growing period (68–90 days) had negative implications to crop production in the eastern zone of Tigray region.</description><identifier>ISSN: 0177-798X</identifier><identifier>EISSN: 1434-4483</identifier><identifier>DOI: 10.1007/s00704-023-04364-w</identifier><language>eng</language><publisher>Vienna: Springer Vienna</publisher><subject>Analysis ; Annual rainfall ; Aquatic Pollution ; Atmospheric Protection/Air Quality Control/Air Pollution ; Atmospheric Sciences ; Climate science ; Climatology ; Coefficient of variation ; Crop production ; Crops ; Earth and Environmental Science ; Earth Sciences ; Growing season ; Homogeneity ; Maximum temperatures ; Minimum temperatures ; Monthly rainfall ; Original Paper ; Precipitation ; Precipitation variability ; Rain and rainfall ; Rainfall ; Seasonal rainfall ; Seasons ; Temperature ; Trend analysis ; Trends ; Waste Water Technology ; Water Management ; Water Pollution Control</subject><ispartof>Theoretical and applied climatology, 2023-04, Vol.152 (1-2), p.25-43</ispartof><rights>The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.</rights><rights>COPYRIGHT 2023 Springer</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c436t-853e604eb615af5a02166e1230734290b96d1f29bd90bd2bdae164789b711cfb3</citedby><cites>FETCH-LOGICAL-c436t-853e604eb615af5a02166e1230734290b96d1f29bd90bd2bdae164789b711cfb3</cites><orcidid>0000-0002-2617-1719</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00704-023-04364-w$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00704-023-04364-w$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Berhe, Amdom Gebremedhin</creatorcontrib><creatorcontrib>Misgna, Solomon Habtu</creatorcontrib><creatorcontrib>Abraha, Girmay Gebre-Samuel</creatorcontrib><creatorcontrib>Abraha, Amanuel Zenebe</creatorcontrib><title>Variability and trend analysis of temperatures, rainfall, and characteristics of crop-growing season in the eastern zone of Tigray region, northern Ethiopia</title><title>Theoretical and applied climatology</title><addtitle>Theor Appl Climatol</addtitle><description>In this study, auto-correlated Mann–Kendall (MK) and Sen’s slope estimator tests were utilized to determine trends of rainfall, temperatures, and characteristics of crop-growing season during 1980–2009. Moreover, the Van Belle and Hughes’ for homogeneity of general trend and Pettitt’s test for the occurrence of abrupt changes were applied. On monthly,
Kiremt
(June–September) and annual time scale, the MK-trend test for rainfall exhibited non-significant increasing trend, while in
Belg
(February–May) rainfall season exhibited non-significant decreasing trend at the most of the stations. On the contrary, temperatures showed significant increasing trends in annual and
Belg
at the 5% significant level. In
Kiremt
season, however, the maximum temperature showed non-significant increasing, while the minimum temperature showed non-significant decreasing trend. Results of homogeneity for general trend obtained by the Van Belle and Hughes’ test seem fairly consistent with those of the MK-trend test. Moreover, results of Pettitt’s test indicated a homogeneous trend in monthly, annual, and seasonal rainfall series and no break point was distinguished, except few stations. On the contrary, the abrupt changes were found to be quite variable in temperatures. The study also found that trends of growing season characteristics (June–September) have not changed significantly at the 5% significant level. Nevertheless, the high coefficient of variation in
Kiremt
rainfall (21–31%) as well as dry spell length (25–43%) in conjunction with the short nature of the length of growing period (68–90 days) had negative implications to crop production in the eastern zone of Tigray region.</description><subject>Analysis</subject><subject>Annual rainfall</subject><subject>Aquatic Pollution</subject><subject>Atmospheric Protection/Air Quality Control/Air Pollution</subject><subject>Atmospheric Sciences</subject><subject>Climate science</subject><subject>Climatology</subject><subject>Coefficient of variation</subject><subject>Crop production</subject><subject>Crops</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Growing season</subject><subject>Homogeneity</subject><subject>Maximum temperatures</subject><subject>Minimum temperatures</subject><subject>Monthly rainfall</subject><subject>Original Paper</subject><subject>Precipitation</subject><subject>Precipitation variability</subject><subject>Rain and 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Climatol</stitle><date>2023-04-01</date><risdate>2023</risdate><volume>152</volume><issue>1-2</issue><spage>25</spage><epage>43</epage><pages>25-43</pages><issn>0177-798X</issn><eissn>1434-4483</eissn><abstract>In this study, auto-correlated Mann–Kendall (MK) and Sen’s slope estimator tests were utilized to determine trends of rainfall, temperatures, and characteristics of crop-growing season during 1980–2009. Moreover, the Van Belle and Hughes’ for homogeneity of general trend and Pettitt’s test for the occurrence of abrupt changes were applied. On monthly,
Kiremt
(June–September) and annual time scale, the MK-trend test for rainfall exhibited non-significant increasing trend, while in
Belg
(February–May) rainfall season exhibited non-significant decreasing trend at the most of the stations. On the contrary, temperatures showed significant increasing trends in annual and
Belg
at the 5% significant level. In
Kiremt
season, however, the maximum temperature showed non-significant increasing, while the minimum temperature showed non-significant decreasing trend. Results of homogeneity for general trend obtained by the Van Belle and Hughes’ test seem fairly consistent with those of the MK-trend test. Moreover, results of Pettitt’s test indicated a homogeneous trend in monthly, annual, and seasonal rainfall series and no break point was distinguished, except few stations. On the contrary, the abrupt changes were found to be quite variable in temperatures. The study also found that trends of growing season characteristics (June–September) have not changed significantly at the 5% significant level. Nevertheless, the high coefficient of variation in
Kiremt
rainfall (21–31%) as well as dry spell length (25–43%) in conjunction with the short nature of the length of growing period (68–90 days) had negative implications to crop production in the eastern zone of Tigray region.</abstract><cop>Vienna</cop><pub>Springer Vienna</pub><doi>10.1007/s00704-023-04364-w</doi><tpages>19</tpages><orcidid>https://orcid.org/0000-0002-2617-1719</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Analysis Annual rainfall Aquatic Pollution Atmospheric Protection/Air Quality Control/Air Pollution Atmospheric Sciences Climate science Climatology Coefficient of variation Crop production Crops Earth and Environmental Science Earth Sciences Growing season Homogeneity Maximum temperatures Minimum temperatures Monthly rainfall Original Paper Precipitation Precipitation variability Rain and rainfall Rainfall Seasonal rainfall Seasons Temperature Trend analysis Trends Waste Water Technology Water Management Water Pollution Control |
| title | Variability and trend analysis of temperatures, rainfall, and characteristics of crop-growing season in the eastern zone of Tigray region, northern Ethiopia |
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