Non‐stationary frequency analysis of extreme streamflow disturbance in a typical ecological function reserve of China under a changing climate

Liu, Mengyang; Ma, Xieyao; Yin, Yixing; Zhang, Zengxin; Yin, Jun; Ullah, Irfan; Arshad, Muhammad

doi:10.1002/eco.2323

Cited by 21 publications

(13 citation statements)

References 62 publications

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“…Besides, SA HWs/droughts are primarily driven by the failure of the summer monsoon (June–September) and providing 80% of the total annual rainfall, which is a lifeline for the millions of people across the region. The dynamic variations in summer monsoon precipitation usually result in extreme wet and dry episodes, leading to extreme weather events, respectively, with devastating socioeconomic impacts (Liu et al., 2021; Mei Sein, Ullah, Syed, et al., 2021). The year‐to‐year variations in the summer monsoon precipitation in the region are associated with the large‐scale atmospheric and oceanic variability (Hina et al., 2021; Mei Sein, Zhi, et al., 2021), particularly El‐Niño Southern Oscillation (ENSO), Pacific Decadal Oscillation (PDO), and the Indian Ocean Dipole (IOD).…”

Section: Discussionmentioning

confidence: 99%

Projected Changes in Socioeconomic Exposure to Heatwaves in South Asia Under Changing Climate

et al. 2022

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The risk of population exposure to severe heatwaves (HWs) increases in a hot and humid environment (Im et al., 2017). The wet-bub temperature (T WB ) takes into account temperature and humidity to measure the human body's surveillance limits. Population exposure to T WB exceeding a threshold of 35°C for a few hours of a day would result in death; therefore, 35°C can be used as an upper limit on human surveillance in a natural

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Section: Discussionmentioning

confidence: 99%

Projected Changes in Socioeconomic Exposure to Heatwaves in South Asia Under Changing Climate

et al. 2022

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“…Water shortage and drought are distinctive phenomena despite the fact that they are susceptible to aggravating the influences of each other. In some areas, the severity and frequency of droughts can lead to water scarcity conditions, whereas overexploitation of existing water resources can worsen the effects of droughts [85]. Various studies demonstrate that drought is among the most dangerous distractive disaster in the current warming world [86][87][88][89], impacting natural resources such as sustainable water and environment, agriculture, ecology, and biodiversity [79,[90][91][92].…”

Section: Discussionmentioning

confidence: 99%

Observed Changes in Meteorological Drought Events during 1981–2020 over Rwanda, East Africa

Uwimbabazi

Jing²,

Iyakaremye

et al. 2022

Sustainability

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Drought is one of the most complex natural phenomena affecting the life and livelihood of people, especially in the current time of human-induced climate change. This research employs ground-based observations to assess the recent spatiotemporal characteristics of meteorological drought events over Rwanda. The drought is examined based on the Standardized Precipitation Evapotranspiration Index (SPEI) and Standardized Precipitation Index (SPI) at seasonal and annual time scales from 1981 to 2020. The Man–Kendal test was used to evaluate the trends in rainfall, temperature, and SPEI values at the annual scale and during the March to May (MAM) and October to December (OND) seasons. The analysis revealed nonsignificant trends in annual (8.4 mm/decade), MAM (−3.4 mm/decade), and OND (4.5 mm/decade) rainfall, while an apparent significant increasing trend in surface air temperature was obtained during the MAM (0.19 °C/decade), OND (0.2 °C/decade), and annual (0.23 °C/decade) time slices. Overall, the SPEI characteristics indicated that the country is more prone to moderate drought events than severe and extreme drought events during MAM and OND seasons. However, the intensity, duration, and frequency differ spatially among seasons. The findings of this study inform policy and decision-makers on the past experienced drought behavior, which can serve as a baseline for future drought mitigation and adaptation plans.

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“…The positive trend in the Kharif season and annual timescale may positively affect agriculture production, water management, and the built environment in Pakistan. The study results support the findings of the earlier studies at regional and global scales (Ahmed et al ., 2018; Guo et al ., 2018; Wang et al ., 2019; Alamgir et al ., 2020; Shah and Mishra, 2020; Liu et al, 2021). According to Wang et al .…”

Section: Discussionmentioning

confidence: 99%

Observed changes in seasonal drought characteristics and their possible potential drivers over Pakistan

Ullah

Yin

et al. 2021

Intl Journal of Climatology

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Long‐term drought monitoring and its assessment are of great importance for meteorological disaster risk management. The recurrent spells of heat waves and droughts have severely affected the environmental conditions worldwide, including Pakistan. The present work sought to investigate the spatiotemporal changes in drought characteristics over Pakistan during Rabi and Kharif cropping seasons. The role of large‐scale circulation and interannual mode of climate variability is further explored to identify the physical mechanisms associated with droughts in the region. Monthly precipitation and temperature data (1983–2019) from 53 meteorological stations were used to study drought characteristics, using the standardized precipitation evapotranspiration index (SPEI). The nonparametric Mann–Kendall, Sen's Slope, and Sequential Mann–Kendall tests were applied on the drought index to determine the statistical significance and magnitude of the historical trend. The state‐of‐the‐art Bayesian Dynamic Linear model was further used to analyse large‐scale climate drivers of droughts, revealed an increase in drought severity, mostly over arid to semiarid regions for both cropping seasons. While temperature played a significant role in defining droughts over dry and hot seasons, rainfall is influential over the western disturbances influenced region. The analysis of atmospheric circulation patterns revealed that large‐scale changes in wind speed, air temperature, relative humidity, and geopotential height anomalies are the likely drivers of droughts in the region. We found that Niño4, sea surface temperature, and multivariate El Niño‐Southern Oscillation (ENSO4.0) Index are the most influential factors for seasonal droughts across Pakistan. Overall, the findings provide a better understanding of drought‐prone areas in the region, and this information is of potential use for mitigating and managing drought risks.

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Non‐stationary frequency analysis of extreme streamflow disturbance in a typical ecological function reserve of China under a changing climate

Cited by 21 publications

References 62 publications

Projected Changes in Socioeconomic Exposure to Heatwaves in South Asia Under Changing Climate

Projected Changes in Socioeconomic Exposure to Heatwaves in South Asia Under Changing Climate

Observed Changes in Meteorological Drought Events during 1981–2020 over Rwanda, East Africa

Observed changes in seasonal drought characteristics and their possible potential drivers over Pakistan

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