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Spatio-temporal assessment of meteorological drought under the influence of varying record length: the case of Upper Blue Nile Basin, Ethiopia

Yared A. Bayissa, Semu A. Moges, Yunqing Xuan Orcid Logo, Schalk J. Van Andel, Shreedhar Maskey, Dimitri P. Solomatine, Ann Van Griensven, Tsegaye Tadesse

Hydrological Sciences Journal, Pages: 1 - 16

Swansea University Author: Yunqing Xuan Orcid Logo

Abstract

This study investigates the spatial and temporal variation of meteorological droughts in the Upper Blue Nile (UBN) basin in Ethiopia using long historical records (1953–2009) for 14 meteorological stations, and relatively short records (1975–2009) for 23 other stations. The influence of using varyin...

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Published in: Hydrological Sciences Journal
ISSN: 0262-6667 2150-3435
Published: 2015
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URI: https://cronfa.swan.ac.uk/Record/cronfa21108
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spelling 2019-10-20T22:54:34.5242206 v2 21108 2015-05-06 Spatio-temporal assessment of meteorological drought under the influence of varying record length: the case of Upper Blue Nile Basin, Ethiopia 3ece84458da360ff84fa95aa1c0c912b 0000-0003-2736-8625 Yunqing Xuan Yunqing Xuan true false 2015-05-06 CIVL This study investigates the spatial and temporal variation of meteorological droughts in the Upper Blue Nile (UBN) basin in Ethiopia using long historical records (1953–2009) for 14 meteorological stations, and relatively short records (1975–2009) for 23 other stations. The influence of using varying record length on drought category was studied by comparing the Standard Precipitation Index (SPI) results from the 14 stations with long record length, by taking out incrementally 1-year records from 1953 to 1975. These analyses show that the record length from 1953 to 1975 has limited effect on changing the drought category and hence the record length from 1975 to 2009 could be used for drought analysis in the UBN basin. Spatio-temporal analyses of the SPI values show that throughout the UBN basin seasonal or annual meteorological drought episodes occurred in the years 1978/79, 1984/85, 1994/95 and 2003/04. Persistency from seasonal to annual drought, and from one year to the next, has been found. The drought years identified by this SPI analysis for the UBN basin are known for their devastating impact in other parts of Ethiopia. Journal Article Hydrological Sciences Journal 1 16 0262-6667 2150-3435 31 12 2015 2015-12-31 10.1080/02626667.2015.1032291 COLLEGE NANME Civil Engineering COLLEGE CODE CIVL Swansea University 2019-10-20T22:54:34.5242206 2015-05-06T13:44:57.9542860 College of Engineering Engineering Yared A. Bayissa 1 Semu A. Moges 2 Yunqing Xuan 0000-0003-2736-8625 3 Schalk J. Van Andel 4 Shreedhar Maskey 5 Dimitri P. Solomatine 6 Ann Van Griensven 7 Tsegaye Tadesse 8 0021108-11052016221726.pdf drought-assessement-hsj-final-revised.pdf 2016-05-11T22:17:26.9900000 Output 2728693 application/pdf Accepted Manuscript true 2016-05-11T00:00:00.0000000 true
title Spatio-temporal assessment of meteorological drought under the influence of varying record length: the case of Upper Blue Nile Basin, Ethiopia
spellingShingle Spatio-temporal assessment of meteorological drought under the influence of varying record length: the case of Upper Blue Nile Basin, Ethiopia
Yunqing Xuan
title_short Spatio-temporal assessment of meteorological drought under the influence of varying record length: the case of Upper Blue Nile Basin, Ethiopia
title_full Spatio-temporal assessment of meteorological drought under the influence of varying record length: the case of Upper Blue Nile Basin, Ethiopia
title_fullStr Spatio-temporal assessment of meteorological drought under the influence of varying record length: the case of Upper Blue Nile Basin, Ethiopia
title_full_unstemmed Spatio-temporal assessment of meteorological drought under the influence of varying record length: the case of Upper Blue Nile Basin, Ethiopia
title_sort Spatio-temporal assessment of meteorological drought under the influence of varying record length: the case of Upper Blue Nile Basin, Ethiopia
author_id_str_mv 3ece84458da360ff84fa95aa1c0c912b
author_id_fullname_str_mv 3ece84458da360ff84fa95aa1c0c912b_***_Yunqing Xuan
author Yunqing Xuan
author2 Yared A. Bayissa
Semu A. Moges
Yunqing Xuan
Schalk J. Van Andel
Shreedhar Maskey
Dimitri P. Solomatine
Ann Van Griensven
Tsegaye Tadesse
format Journal article
container_title Hydrological Sciences Journal
container_start_page 1
publishDate 2015
institution Swansea University
issn 0262-6667
2150-3435
doi_str_mv 10.1080/02626667.2015.1032291
college_str College of Engineering
hierarchytype
hierarchy_top_id collegeofengineering
hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
document_store_str 1
active_str 0
description This study investigates the spatial and temporal variation of meteorological droughts in the Upper Blue Nile (UBN) basin in Ethiopia using long historical records (1953–2009) for 14 meteorological stations, and relatively short records (1975–2009) for 23 other stations. The influence of using varying record length on drought category was studied by comparing the Standard Precipitation Index (SPI) results from the 14 stations with long record length, by taking out incrementally 1-year records from 1953 to 1975. These analyses show that the record length from 1953 to 1975 has limited effect on changing the drought category and hence the record length from 1975 to 2009 could be used for drought analysis in the UBN basin. Spatio-temporal analyses of the SPI values show that throughout the UBN basin seasonal or annual meteorological drought episodes occurred in the years 1978/79, 1984/85, 1994/95 and 2003/04. Persistency from seasonal to annual drought, and from one year to the next, has been found. The drought years identified by this SPI analysis for the UBN basin are known for their devastating impact in other parts of Ethiopia.
published_date 2015-12-31T03:31:29Z
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score 10.898149