New elevation data triple estimates of global vulnerability to sea-level rise and coastal flooding

  title={New elevation data triple estimates of global vulnerability to sea-level rise and coastal flooding},
  author={Scott Kulp and Benjamin H. Strauss},
  journal={Nature Communications},
  • S. Kulp, B. Strauss
  • Published 2019
  • Environmental Science, Medicine
  • Nature Communications
Most estimates of global mean sea-level rise this century fall below 2 m. This quantity is comparable to the positive vertical bias of the principle digital elevation model (DEM) used to assess global and national population exposures to extreme coastal water levels, NASA’s SRTM. CoastalDEM is a new DEM utilizing neural networks to reduce SRTM error. Here we show – employing CoastalDEM—that 190 M people (150–250 M, 90% CI) currently occupy global land below projected high tide lines for 2100… Expand
National-Scale Built-Environment Exposure to 100-Year Extreme Sea Levels and Sea-Level Rise
Coastal flooding from extreme sea levels will increase in frequency and magnitude as global climate change forces sea-level rise (SLR). Extreme sea-level events, rare in the recent past (i.e., onceExpand
Population pattern and exposure under sea level rise: Low elevation coastal zone in the Yangtze River Delta, 1990–2100
  • Yamin Lv, Weijiang Li, Jiahong Wen, Hui Xu, Shiqiang Du
  • Geography
  • Climate Risk Management
  • 2021
Abstract The low elevation coastal zone (LECZ) in the Yangtze River Delta (YRD) is a critical and highly sensitive area to climate change and sea level rise (SLR). Population is a key element inExpand
Tracking California’s sinking coast from space: Implications for relative sea-level rise
The unprecedented detail and submillimeter accuracy resolved in the vertical land motion dataset can transform the analysis of natural and anthropogenic changes in relative sea-level and associated hazards. Expand
Projections of Global Delta Land Loss From Sea‐Level Rise in the 21st Century
River deltas will likely experience significant land loss because of relative sea-level rise (RSLR), but predictions have not been tested against observations. Here, we use global data of RSLR andExpand
Enhancing New York City's resilience to sea level rise and increased coastal flooding
Abstract Accelerating Greenland and Antarctic Ice Sheet ice mass losses and potential West Antarctic Ice Sheet instability may lead to higher than previously anticipated future sea levels. The NewExpand
Coastal Adaptation to Climate Change and Sea-Level Rise
The Earth’s climate is changing; ice sheets and glaciers are melting and coastal hazards and sea level are rising in response. With a total population of over 300 million people situated on coasts,Expand
Comparing urban coastal flood risk in 136 cities under two alternative sea-level projections: RCP 8.5 and an expert opinion-based high-end scenario
Abstract The high degree of uncertainty associated with the extent of future sea-level rise stems primarily from the potential mass loss of the Greenland and Antarctica ice-sheets. We explore theExpand
New ICESat-2 Satellite LiDAR Data Allow First Global Lowland DTM Suitable for Accurate Coastal Flood Risk Assessment
The recent availability of satellite LiDAR data presents a major and much-needed step forward for studies and policies requiring accurate elevation models, as well as revealing extensive forested land areas below 2 m +MSL in Papua and the Amazon Delta that are largely undetected by existing GDEMs. Expand
Egypt's coastal vulnerability to sea level rise and storm surge: present and future conditions.
The application of the Climate-improved Coastal Vulnerability Index in the coast of Egypt can be considered as a first screening of the hot spot risk areas at the national scale, and can be used to support the development of climate adaptation and integrated coastal zone management strategies. Expand
A Regional Frequency Analysis of Tide Gauges to Assess Pacific Coast Flood Risk
A regional frequency analysis (RFA) of tide gauge (TG) data fit with a Generalized Pareto Distribution (GPD) is used to estimate contemporary extreme sea level (ESL) probabilities and the risk of aExpand


Global DEM Errors Underpredict Coastal Vulnerability to Sea Level Rise and Flooding
Elevation data based on NASA’s Shuttle Radar Topography Mission (SRTM) have been widely used to evaluate threats from global sea level rise, storm surge, and coastal floods. However, SRTM data areExpand
Modelling sea level rise impacts on storm surges along US coasts
Sound policies for protecting coastal communities and assets require good information about vulnerability to flooding. Here, we investigate the influence of sea level rise on expected stormExpand
Future Coastal Population Growth and Exposure to Sea-Level Rise and Coastal Flooding - A Global Assessment
This work combines spatially explicit estimates of the baseline population with demographic data in order to derive scenario-driven projections of coastal population development and highlights countries and regions with a high degree of exposure to coastal flooding and help identifying regions where policies and adaptive planning for building resilient coastal communities are not only desirable but essential. Expand
CoastalDEM: A global coastal digital elevation model improved from SRTM using a neural network
Abstract Positive vertical bias in elevation data derived from NASA's Shuttle Radar Topography Mission (SRTM) is known to cause substantial underestimation of coastal flood risks and exposure.Expand
Best Practices for Elevation-Based Assessments of Sea-Level Rise and Coastal Flooding Exposure
  • D. Gesch
  • Environmental Science
  • Front. Earth Sci.
  • 2018
Elevation data are critical for assessments of sea-level rise and coastal flooding exposure. Previous research has demonstrated that the quality of data used in elevation-based assessments must beExpand
A probabilistic approach to 21st century regional sea-level projections using RCP and High-end scenarios
Sea-level change is an integrated climate system response due to changes in radiative forcing, anthropogenic land-water use and land-motion. Projecting sea-level at a global and regional scaleExpand
Coastal flood damage and adaptation costs under 21st century sea-level rise
Coastal flood damage and adaptation costs under 21st century sea-level rise are assessed on a global scale taking into account a wide range of uncertainties in continental topography data, population data, protection strategies, socioeconomic development and sea- level rise. Expand
Probabilistic 21st and 22nd Century Sea-Level Projections at a Global Network of Tide-Gauge Sites
Sea-level rise due to both climate change and non-climatic factors threatens coastal settlements, infrastructure, and ecosystems. Projections of mean global sea-level (GSL) rise provide insufficientExpand
Allowances for evolving coastal flood risk under uncertain local sea-level rise
Estimates of future flood hazards made under the assumption of stationary mean sea level are biased low due to sea-level rise (SLR). However, adjustments to flood return levels made assuming fixedExpand
Sea level projections to AD2500 with a new generation of climate change scenarios
Abstract Sea level rise over the coming centuries is perhaps the most damaging side of rising temperature (Anthoff et al., 2009). The economic costs and social consequences of coastal flooding andExpand