Flooding in Delta Areas under Changing Climate: Response of Design Flood Level to Non-Stationarity in Both Inflow Floods and High Tides in South China

Tang, Y.; Guo, Qizhong; Su, Chengjia; Chen, Xiaohong

doi:10.3390/w9070471

Cited by 10 publications

(4 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Hong Kong Climate Change Report (2015) indicates that annual precipitation may rise by 180 mm by the end of the twenty-first century, while the chance of a daily maximum temperature higher than 35°C increases to 22% in the early twenty-first century compared with the 3% in early twentieth century 56 . Coupled with rapid urbanization, the GBA may thus become more vulnerable to flood risk 57 . Thus, we employ four indicators to measure exposure: typhoon frequency, flood risk, precipitation, and temperature.…”

Section: Methodsmentioning

confidence: 99%

Urban agglomeration worsens spatial disparities in climate adaptation

Kim

Bennett

Gevelt

et al. 2021

Sci Rep

View full text Add to dashboard Cite

Many countries promote urban agglomeration to enhance economic competitiveness, but the impacts of this strategy on local climate adaptation remain poorly understood. Here, we use variation in greenspaces to test the effectiveness of climate adaptation policy across climate impacts and vulnerability dimensions. Using satellite imagery and logistic regression, we analyze spatiotemporal correlation between greenspace and climate vulnerability in the Guangdong-Hong Kong-Macau Greater Bay Area, an area comprising ~ 70 million people and 11 cities, making it a useful natural experiment for our study. We find that while greenspace increases proportionally with climate exposure and sensitivity, many cities exhibit discrepancies between greenspace variation and climate vulnerability. Green adaptation funnels into wealthier, less vulnerable areas while bypassing more vulnerable ones, increasing their climate vulnerability and undermining the benefits of urban agglomeration. The results suggest that centrally-planned climate adaptation policy must accommodate local heterogeneity to improve urban sustainability. By neglecting local heterogeneity, urban agglomeration policy risks exacerbating spatial inequalities in climate adaptation.

show abstract

Section: Methodsmentioning

confidence: 99%

Urban agglomeration worsens spatial disparities in climate adaptation

Kim

Bennett

Gevelt

et al. 2021

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Tang et al [18] developed a flood frequency method to understand impacts of climate change on coastal watersheds. Many coastal areas are experiencing intensified flooding due to the combined impacts of the floods from the upstream watershed and the rising high tidal levels induced by sea-level rise (SLR).…”

Section: Application Of Watershed Models For Environmental Assessmentmentioning

confidence: 99%

Watershed Hydrology: Scientific Advances and Environmental Assessments

Duffy

2018

Water

View full text Add to dashboard Cite

The watershed is a fundamental concept in hydrology and is the basis for understanding hydrologic processes and for the planning and management of water resources. Storage and movement of water at a watershed scale is complicated due to the coupled processes which act over multiple spatial and temporal scales. In addition, climate change and human activities increase the complexity of these processes driving hydrologic change. Scientific advances in the field of watershed hydrology is now making use of the latest methods and technologies to achieve responsible management of water resources to meet the needs of rising populations and the protection of important ecosystems. The selected papers cover a wide range of issues that are relevant to watershed hydrology and have motivated model development, application, parameterization, uncertainty estimation, environment assessment, and management. Continued technological advances grounded in modern environmental science are necessary to meet these challenges. This will require a greater emphasis on disciplinary collaboration and integrated approaches to problem solving founded on science-driven innovations in technology, socio-economics, and public policy.

show abstract

“…While this was in part to rapid development (Peng et al ., 2017; Omer et al ., 2019), climate change and its impact on hydrological processes has also exacerbated the situation, for example, accelerated glacial retreat at the sources of the Yellow and Yangtze Rivers (Bao and Feng, 2016). Climate change may affect the frequency, size, location and duration of hydrological extreme events (Tang et al ., 2017; Wang et al ., 2018; Wu et al ., 2018), and increased extreme events in China often result in greater impacts compared to increases of the mean state (Xu et al ., 2019). Hence, climate change over the river basins has aroused great concern amongst local scientists (Xi et al ., 2018; Xu et al ., 2019).…”

Section: Introductionmentioning

confidence: 99%

Historical and projected climate change over three major river basins in China from Fifth and Sixth Coupled Model Intercomparison Project models

Zhu

Wen

et al. 2021

Intl Journal of Climatology

View full text Add to dashboard Cite

When assessing the socio-economic impacts of climate change, it is sensible to make targeted climate projections for regions of high population density and economy activity. Much of human activity is concentrated at river basins, yet it has been difficult to resolve the complex boundaries of these basins in coarse resolution global climate models. The latest high-resolution observation and climate projection datasets enable such basin-based evaluations now, and this study assesses the historical and projected climate changes over three major river basins in China-the Yellow, Yangtze and Pearl River basins. Based on CN05.1 dataset, the Yellow River basin has significantly warmed by about 1.8 C over the past five decades, far more than the other two basins. The change in temperature extremes has been as severe, with the annual maxima of daily maximum temperatures (TXx) increasing by 1.5 C, and the annual minima of daily minimum temperatures (TNn) increasing by 2.5 C. Precipitation over the Yangtze River has significantly increased by about 0.2 mmÁday −1 , while changes over the other two basins were not statistically significant. The uncertainty in the change of precipitation was greater than that of temperature. A selection of simulations from the Fifth and Sixth Coupled Model Intercomparison Projects (CMIP5 and CMIP6) were validated against the CN05.1 dataset for the historical period of 1961-2018. Changes in temperature indices were well-reproduced, but changes in precipitation indices poorly so. CMIP6 models performed better than the CMIP5 models. Both CMIP5 and CMIP6 multi-model ensembles (MMEs) projected about 1.0-2.0 C warming over China and the three river basins by 2015-2050. Both MMEs projected wetting trends over most parts of China and the three river basins. Both warming and wetting were projected to accelerate with time, particularly warming over the Yellow River basin, and wetting over the Pearl River basin.

show abstract

Flooding in Delta Areas under Changing Climate: Response of Design Flood Level to Non-Stationarity in Both Inflow Floods and High Tides in South China

Cited by 10 publications

References 26 publications

Urban agglomeration worsens spatial disparities in climate adaptation

Urban agglomeration worsens spatial disparities in climate adaptation

Watershed Hydrology: Scientific Advances and Environmental Assessments

Historical and projected climate change over three major river basins in China from Fifth and Sixth Coupled Model Intercomparison Project models

Contact Info

Product

Resources

About