Seasonal drought pattern changes due to climate variability in Afghanistan

This study assessed the changes in meteorological droughts severity and its return periods during cropping seasons of Afghanistan for the period 1901-2010. Reconstruction of droughts for the country was conducted using standardized precipitation evapotranspiration index (SPEI). Global precipitation...

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Main Author:	Ishanch, Qutbudin
Format:	Thesis
Language:	English
Published:	2019
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/86857/1/QutbudinIshanchMSKA2019.pdf
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id	my-utm-ep.86857
record_format	uketd_dc
spelling	my-utm-ep.868572020-09-30T09:08:56Z Seasonal drought pattern changes due to climate variability in Afghanistan 2019 Ishanch, Qutbudin TA Engineering (General). Civil engineering (General) This study assessed the changes in meteorological droughts severity and its return periods during cropping seasons of Afghanistan for the period 1901-2010. Reconstruction of droughts for the country was conducted using standardized precipitation evapotranspiration index (SPEI). Global precipitation climatology center (GPCC) rainfall and climate research unit (CRU) temperature data both at 0.5º resolutions were used for this purpose. Seasonal droughts return periods were estimated using the values of the SPEI fitted with the best distribution function. Unidirectional trends in climatic variables and SPEI were assessed using modified Mann-Kendal trend test, which has the ability of removing the influence of long-term persistence on trend significance. The study revealed increases in drought severity and frequency in Afghanistan over the study period. Temperature, which increased up to 0.14 º C/decade, is the major factor influencing decreases in the SPEI values at the northwest and southwest of the country during rice and corn growing seasons, while increasing temperature and decreasing rainfall are the cause of decrease SPEI during wheat growing season. The study concluded that temperature plays a more significant role in decreasing the SPEI values and therefore, more severe droughts in future due to global warming. 2019 Thesis http://eprints.utm.my/id/eprint/86857/ http://eprints.utm.my/id/eprint/86857/1/QutbudinIshanchMSKA2019.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:134199 masters Universiti Teknologi Malaysia, Faculty of Civil Engineering Faculty of Civil Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Ishanch, Qutbudin Seasonal drought pattern changes due to climate variability in Afghanistan
description	This study assessed the changes in meteorological droughts severity and its return periods during cropping seasons of Afghanistan for the period 1901-2010. Reconstruction of droughts for the country was conducted using standardized precipitation evapotranspiration index (SPEI). Global precipitation climatology center (GPCC) rainfall and climate research unit (CRU) temperature data both at 0.5º resolutions were used for this purpose. Seasonal droughts return periods were estimated using the values of the SPEI fitted with the best distribution function. Unidirectional trends in climatic variables and SPEI were assessed using modified Mann-Kendal trend test, which has the ability of removing the influence of long-term persistence on trend significance. The study revealed increases in drought severity and frequency in Afghanistan over the study period. Temperature, which increased up to 0.14 º C/decade, is the major factor influencing decreases in the SPEI values at the northwest and southwest of the country during rice and corn growing seasons, while increasing temperature and decreasing rainfall are the cause of decrease SPEI during wheat growing season. The study concluded that temperature plays a more significant role in decreasing the SPEI values and therefore, more severe droughts in future due to global warming.
format	Thesis
qualification_level	Master's degree
author	Ishanch, Qutbudin
author_facet	Ishanch, Qutbudin
author_sort	Ishanch, Qutbudin
title	Seasonal drought pattern changes due to climate variability in Afghanistan
title_short	Seasonal drought pattern changes due to climate variability in Afghanistan
title_full	Seasonal drought pattern changes due to climate variability in Afghanistan
title_fullStr	Seasonal drought pattern changes due to climate variability in Afghanistan
title_full_unstemmed	Seasonal drought pattern changes due to climate variability in Afghanistan
title_sort	seasonal drought pattern changes due to climate variability in afghanistan
granting_institution	Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department	Faculty of Civil Engineering
publishDate	2019
url	http://eprints.utm.my/id/eprint/86857/1/QutbudinIshanchMSKA2019.pdf
_version_	1747818513686331392

Seasonal drought pattern changes due to climate variability in Afghanistan

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