气候变化领域集成服务门户(CCPortal): The Pakistan Flood of August 2022: Causes and Implications

CCPortal

DOI	10.1029/2022EF003230
	The Pakistan Flood of August 2022: Causes and Implications
	Nanditha, J. S.; Kushwaha, Anuj Prakash; Singh, Rajesh; Malik, Iqura; Solanki, Hiren; Chuphal, Dipesh Singh; Dangar, Swarup; Mahto, Shanti Shwarup; Vegad, Urmin; Mishra, Vimal
发表日期	2023
EISSN	2328-4277
卷号	11 期号:3
英文摘要	The risk of floods has increased in South Asia due to high vulnerability and exposure. The August 2022 Pakistan flood shows a glimpse of the enormity and devastation that can further rise under the warming climate. The deluge caused by the floods in 2022, which badly hit the country's southern provinces, is incomparable to any recent events in terms of the vast spatial and temporal scale. The flood event is ranked second in human mortality, while this was the top event that displaced about 33 million people in Pakistan. Using observations and climate projections, we examine the causes and implications of the 2022 flood in Pakistan. Multiday (& SIM;15 days) extreme precipitation on wet antecedent soil moisture conditions was the primary driver of the flood in August 2022. The extreme precipitation in August was caused by two atmospheric rivers that passed over southern Pakistan. Streamflow simulations from the multiple hydrological models show that multiday extreme precipitation was the primary driver of floods. Several flood-affected stations experienced anomalously higher flow than the upstream stations. The 2022 Pakistan flood highlights the adaptation challenges South Asia is facing along with the substantial need for climate mitigation to reduce the risk of such events. Plain Language Summary The Pakistan flood of 2022 received a considerable attention. However, the causes and implications of the events have not been examined. Using observations, satellite data, and reanalysis products, we show that the event was caused by multiday extreme rainfall on wet antecedent conditions. The extreme rainfall was associated with the two atmospheric rivers that transported significant moisture from the Arabian Sea. The flood was primarily driven by the extreme precipitation and other factors (glacier-melt) played a secondary role. Extreme precipitation is projected to increase in a warming climate, which highlight the strong need of adaptation and mitigation.
英文关键词	flood; climate change; Pakistan flood; extreme precipitation
语种	英语
WOS研究方向	Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000949705900001
来源期刊	EARTHS FUTURE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/281166
作者单位	Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Gandhinagar; Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Gandhinagar
推荐引用方式 GB/T 7714	Nanditha, J. S.,Kushwaha, Anuj Prakash,Singh, Rajesh,et al. The Pakistan Flood of August 2022: Causes and Implications[J],2023,11(3).
APA	Nanditha, J. S..,Kushwaha, Anuj Prakash.,Singh, Rajesh.,Malik, Iqura.,Solanki, Hiren.,...&Mishra, Vimal.(2023).The Pakistan Flood of August 2022: Causes and Implications.EARTHS FUTURE,11(3).
MLA	Nanditha, J. S.,et al."The Pakistan Flood of August 2022: Causes and Implications".EARTHS FUTURE 11.3(2023).