Your search found 2 records
1 Rafiq, M.; Li, Y. C.; Cheng, Y.; Rahman, G.; Ullah, I.; Ali, A. 2022. Spatial and temporal fluctuation of rainfall and drought in Balochistan Province, Pakistan. Arabian Journal of Geosciences, 15(2):214. [doi: https://doi.org/10.1007/s12517-022-09514-4]
Drought ; Rain ; Assessment ; Trends ; Precipitation ; Semiarid zones ; Meteorological stations / Pakistan / Balochistan / Barkhan / Dalbandin / Kalat / Khuzdar / Lasbella / Quetta
(Location: IWMI HQ Call no: e-copy only Record No: H051224)
(4.44 MB)
Drought is a multifaceted hydro-meteorological phenomenon that occurs due to a reduction in the amount of rainfall which increases complexity as well as scarcity in arid to semi-arid region. This research presented fluctuation in rainfall and analyzed drought conditions in Balochistan province using the standardized precipitation index (SPI). The six meteorological station (Met stations) data of rainfall were collected from the concerned stations. The data consists of 33 years of rainfall observations (1986–2018). For the data normality, skewness was applied and the results showed positive skewness at all station records with the highest variability in Kalat and Barkhan. The Mann–Kendall trend was applied on both 1-month and 12-month SPI data to assess the trend in the SPI results. In Balochistan, the SPI results detected two distinct driest drought intervals, i.e., 1998–2002 and 2014–2018. The MKT test results detected negative trend in the results of 1-month SPI at most of the selected stations with more significant results in Dalbandin. The January recorded a slight increase in rainfall in almost all weather stations with significant trend. Furthermore, the MKT results of the 12-month SPI deduced a significant positive trend in Dalbandin. Finally, the results revealed frequent drought events and it is expected that it may increase in the future.
2 Ahmad, M. B.; Muavia, A.; Iqbal, M.; Arshed, A. B.; Ahmad, M. M. 2023. Spatio-temporal drought assessment and comparison of drought indices under climatic variations in drought-prone areas of Pakistan. Journal of Water and Climate Change, 14(10):3726-3752. [doi: https://doi.org/10.2166/wcc.2023.602]
Drought ; Assessment ; Monitoring ; Precipitation ; Evapotranspiration ; Rainfall patterns ; Vegetation ; Satellites ; Water management ; Extreme weather events / Pakistan / Balochistan / Dalbandin / Jiwani / Kalat / Khuzdar / Lasbella / Quetta / Pasni / Sibi / Zhob / Panjgur
(Location: IWMI HQ Call no: e-copy only Record No: H052296)
https://iwaponline.com/jwcc/article-pdf/doi/10.2166/wcc.2023.602/1313599/jwc0143726.pdf
https://vlibrary.iwmi.org/pdf/H052296.pdf
https://vlibrary.iwmi.org/pdf/H052296.pdf
(3.15 MB) (3.15 MB)
Climatic variations cause droughts which badly affect the environment. The study focused on monitoring droughts to aid decision-making and mitigate their negative impacts on water availability for agriculture and livelihoods in the face of increasing water demand and climate change. To assess the agricultural droughts, a new agricultural Standardized Precipitation Index (aSPI) was calculated which is not used earlier in Balochistan. Widely recommended Standardized Precipitation Index (SPI) and Standardized Precipitation Evapotranspiration Index (SPEI) were used for meteorological drought assessment. Drought indices comparison was also conducted to check the applicability. Rainfall, maximum temperature, and minimum temperature data (1992 to 2021) were utilized to calculate SPI, aSPI, and SPEI at different timescales (3, 6, 9, and 12 months) using DrinC software and SPEI calculator. Indices results revealed the following severe to extreme drought years: 1998, 1999, 2000, 2001, 2002, 2004, 2008, 2011, 2014, 2016, and 2017. It was determined that Dalbandin, Quetta, Sibi, Kalat, Khuzdar, and Zhob experienced higher extreme drought frequencies. Both long- and short-term drought durations were observed. Indices comparison showed that SPI is the most efficient drought index compared to aSPI and SPEI. This study offers valuable insights for managing water resources in the face of climate-induced droughts.
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