Correcting streamflow bias considering its spatial structure for impact assessment of climate change on floods using d4PDF in the Chao Phraya River Basin, Thailand

Budhathoki, Aakanchya; Tanaka, Tomohiro; Tachikawa, Yasuto

doi:10.1016/j.ejrh.2022.101150

Cited by 3 publications

(2 citation statements)

References 44 publications

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“…As climate change effects transcend individual watersheds, the degradation of upstream ecosystems has contributed to increased downstream flood risks [16,17]. Consequently, the need for multi-scale flood management and system control within large watersheds has become even more pressing.…”

Section: Introductionmentioning

confidence: 99%

Navigating the ecosystem flood regulation service flows from subbasin to catchment in the Han River Basin

Liu,

Li,

Chen

2023

Environ. Res. Lett.

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With the increasing cross-regional impact of climate change increasing in recent years, the Han River Basin, as a vital water resource supply and densely populated area in China, faces severe cross-regional flood threats and challenges. The systematic consideration of flood regulation throughout the entire upstream and downstream of the basin has become imminent. Our research aims to gain a deeper understanding of the ecosystem flood regulation service flows from upstream to downstream within subbasins and catchments scales of the Han River Basin. The results showed that the overflow path from upstream to downstream of the flood was basically consistent with the trend of the stream and the main tributaries of the Han River. It emerged that subbasins c, e, g, h and k were the key areas for the overall regulation of the upstream and downstream floods at subbasin scale. A total of 11 catchments overflow into their adjacent downstream catchments across the subbasins, a fact which is critical for catchment scale flood regulation. What’s more, there is evident interaction not only between adjacent subbasin and catchment units but also substantial exchange of service flows between non-adjacent units. Notably, catchment c’s flood regulation service flow was primarily contributed by its non-adjacent units. These findings not only contribute to filling the current knowledge gap in cross-watershed flood overflow and flood regulation service flows, but also provide support for the integrated response of upstream and downstream flood disaster risk management at the whole basin scale.

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Section: Introductionmentioning

confidence: 99%

Navigating the ecosystem flood regulation service flows from subbasin to catchment in the Han River Basin

Liu,

Li,

Chen

2023

Environ. Res. Lett.

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“…A warming atmosphere has an increasing water vapor holding capacity according to the thermodynamic Clausius-Clapeyron relationship, potentially leading to more frequent and severe precipitation and runoff extremes [4,5]. At the regional scale, climate warming will remarkably increase flood risks in flood-prone regions such as the Chao Phraya River Basin (CPRB), Thailand [6]. On the other hand, some drought hotspots are expected to experience more record-shattering droughts in the context of anthropogenic warming, including California [7], the peninsular River Basins of India [8] and southern China [9].…”

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confidence: 99%

Severe Socioeconomic Exposures Due to Enhanced Future Compound Flood-Heat Extreme Hazards in China

Chen

et al. 2022

Atmosphere

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As the climate warms, a new hazard, compound flood-heat extreme (CFH) events, characterized by the rapid succession of devastating floods and deadly heat (or vice-versa), are becoming increasingly frequent, threatening infrastructure and ecosystems. However, how this CFH hazard will change under future anthropogenic warming in China and their potential population and economic exposures remains unexamined. Here, we systematically quantify the projected changes in bivariate CHF hazards for 187 catchments in China during the 2071–2100 period relative to the 1985–2014 period and investigate the potential population and gross domestic product (GDP) exposure, by developing a climatic-hydrological-socioeconomic modelling chain. We find that there is a nationwide increase in CFH hazards and the historical 30-year CFH episodes are projected to increase by 10 times in southern catchments. Under the synergistic impacts of changing CFH episodes and population (GDP), a mass of people in southern (0.79–2.13 thousand/km2) and eastern (1.68 thousand/km2) catchments and an enormous sum of GDP in eastern catchments (400–912 million/km2) will be exposed to increasing CFH hazards. Our results highlight the necessity of improving both societal resilience and mitigation solutions to address such weather-related hazards.

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Evaluating the necessity of post-processing techniques on d4PDF data for extreme climate assessment

Maneechot,

Wong,

Try

et al. 2023

Environ Sci Pollut Res

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Correcting streamflow bias considering its spatial structure for impact assessment of climate change on floods using d4PDF in the Chao Phraya River Basin, Thailand

Cited by 3 publications

References 44 publications

Navigating the ecosystem flood regulation service flows from subbasin to catchment in the Han River Basin

Navigating the ecosystem flood regulation service flows from subbasin to catchment in the Han River Basin

Severe Socioeconomic Exposures Due to Enhanced Future Compound Flood-Heat Extreme Hazards in China

Evaluating the necessity of post-processing techniques on d4PDF data for extreme climate assessment

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