Mastodawn

"Human-driven sea-level rise has quadrupled the frequency of coastal sea-level extremes since 1900

Abstract

Coastal flooding events are escalating worldwide, yet the role of human-driven sea-level rise remains poorly constrained. Here we provide a global detection and attribution of changes in extreme sea-level frequency since 1900, combining tide-gauge records with historical and single-forcing experiments from the Coupled Model Intercomparison Project Phase 5. We show that relative sea-level rise, driven primarily by anthropogenic radiative forcing since the 1960s, has already transformed the likelihood of historically rare extremes. Globally, the median frequency of an historical 1-in-100-year extreme sea-level event has increased ~12-fold, with human-driven radiative forcing alone quadrupling the likelihood of such events. Natural variability still modulates regional patterns but has become secondary along most coastlines. These findings provide direct, observation-based evidence that climate change has already reshaped coastal flood hazard, underscoring the urgency of integrating attribution science into coastal adaptation, risk management and policy frameworks."

https://www.nature.com/articles/s41558-026-02659-0

Human-driven sea-level rise has quadrupled the frequency of coastal sea-level extremes since 1900 - Nature Climate Change

Sea-level rise in conjunction with storm surge and tidal variations leads to extreme sea levels that threaten coastal systems. Here the authors use tide-gauge data and models to quantify how anthropogenic climate change has increased the risk of these extreme sea-level events since 1900.

Nature

Lumpenanalyst 2d ago

#EarthSystem #Anthroposphere: "Human-caused #SeaLevelRise has significantly increased the frequency of extreme coastal flooding worldwide, according to a new study led by a Tulane University researcher." https://phys.org/news/2026-06-extreme-coastal-surges-worldwide-seas.html?utm_source=nwletter&utm_medium=email&utm_campaign=daily-nwletter

Extreme coastal flooding surges worldwide as rising seas rewrite 100-year odds

Human-caused sea-level rise has significantly increased the frequency of extreme coastal flooding worldwide, according to a new study led by a Tulane University researcher. The research, published in the journal Nature Climate Change, found that coastal flooding events expected only once every 100 years are now, on average, about 12 times more likely to occur.

Phys.org

Ricardo Segurado 2d ago

Polls show most people believe in climate change, and think governments are not doing enough.

Here are a few things that I think the ("western") public has *not* yet accepted:

Feel free to add to the list

1) Air travel will have to be electrified ASAP, or largely go away

2) Sea travel will have to be decarbonised ASAP, or largely go away

3) Coastal areas are bad places to live

#ClimateChange #decarbonise #ZeroEmission #adapt #SeaLevelRise #climate #ClimateRisk

Baaghi TV 3d ago

UN Warns Ocean Stress Accelerating as Sea Levels Rise Faster

#BaaghiTV #International #OceanHealth #UnitedNations #ClimateChange #SeaLevelRise #WorldOceansDay

https://en.baaghitv.com/un-warns-ocean-stress-accelerating-as-sea-levels-rise-faster

💧🌏 Greg Cocks 3d ago

[G]lobal Decline In Endorheic Basin Water Storages
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https://doi.org/10.1038/s41561-018-0265-7 <-- shared paper
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https://en.wikipedia.org/wiki/Endorheic_basin <-- shared Wikipedia page
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“Endorheic (hydrologically landlocked) basins spatially concur with arid/semi-arid climates. Given limited precipitation but high potential evaporation, their water storage is vulnerable to subtle flux perturbations, which are exacerbated by global warming and human activities. Increasing regional evidence suggests a probably recent net decline in endorheic water storage, but this remains unquantified at a global scale. By integrating satellite observations and hydrological modelling, [they] reveal[ed] that during 2002–2016 the global endorheic system experienced a widespread water loss of about 106.3 Gt/yr, attributed to comparable losses in surface water, soil moisture and groundwater. This decadal decline, disparate from water storage fluctuations in exorheic basins, appears less sensitive to El Niño–Southern Oscillation-driven climate variability, which implies a possible response to longer-term climate conditions and human water management. In the mass-conserved hydrosphere, such an endorheic water loss not only exacerbates local water stress, but also imposes excess water on exorheic basins, leading to a potential sea level rise that matches the contribution of nearly half of the land glacier retreat (excluding Greenland and Antarctica). Given these dual ramifications, [they] suggest the necessity for long-term monitoring of water storage variation in the global endorheic system and the inclusion of its net contribution to future sea level budgeting…”
#water #hydrology #hydrography #global #waterresources #waterstorage #Endorheic #Basin #watersecurity #arid #semiarid #rainfall #precipitation #spatialanalysis #spatiotemporal #globalwarming #climatechange #humanimpacts #anthropogenic #regional #remotesensing #GIS #spatial #mapping #earthobservation #surfacewater #groundwater #soilmoisture #exorheic #watermanagement #hydrosphere #waterstress #SLR #sealevelrise #monitoring #waterbudgets

Miss Gayle 4d ago

"Every sovereign boundary will be tested. Can one people relinquish territory to accommodate another? Can a wandering nation make a transition to a new location...? A de-territorialized group will feel profound disorientation, displacement, social, spiritual and economic trauma of every kind, whereas the occupants at their destinations may feel invaded or even territorially dismembered themselves."

Link: https://www.resilience.org/stories/2026-06-09/sovereignty-and-rising-sea-levels-climate-change-is-reshaping-the-meaning-of-nationhood/

#Climate #ClimateCrisis #SeaLevelRise #Ocean #Refugees #Sea

Lumpenanalyst 4d ago

#EarthSystem #SeaLevelRise: "This invisible factor is a result of the planet's gravity and its flexibility, which provides an "extra push" to the #ocean levels. It seems that the laws of physics are working against us as far as rising sea levels are concerned"
https://sciencex.com/news/2026-06-sea-worse-hidden-earth-physics.html?utm_source=nwletter&utm_medium=email&utm_campaign=daily-nwletter

Sea-level rise may be even worse than expected thanks to hidden Earth physics

As the global temperature increases, Earth's oceans are experiencing a huge shift. In addition to commonly known effects, such as melting of ice caps and thermal expansion, there is an invisible factor that influences ocean levels and leads to further consequences, which researchers have just started to explore.

Science X

Benjamin Carr, Ph.D. 👨🏻‍💻🧬4d ago

‘Severe’ stress on #oceans as rate of #sealevelrise doubles in 10 years, UN warns
Global effort needed to limit effects of #pollution, industrial fishing and #climatecrisis,
Sea levels continue to rise at an increasing rate, from 2mm a year prior to 2015 to 4.3mm a year in 2023.
16% of the increase in global ocean heat since 1955 occurred after 2018.
The greatest relative warming has been observed in the #Atlantic and the southern parts of the Indian and #Pacific Oceans.
https://www.theguardian.com/environment/2026/jun/08/un-world-ocean-assessment-severe-stress-sea-level-rise-doubles-pollution-fishing-climate

‘Severe’ stress on oceans as rate of sea level rise doubles in 10 years, UN warns

Global effort needed to limit effects of pollution, industrial fishing and climate crisis, World Ocean Assessment says

The Guardian

BellingenNSW 4d ago

From coastal living to the front line of planned retreat

The impacts of fossil fuel emissions are gnawing on Australia's coastline

* "87% of Australia’s population lives within 50 kilometres of the coast." >>
https://www.dcceew.gov.au/sites/default/files/documents/2.%20DCCEEW-SOE_factsheet_Coasts.pdf

* Living near the coast in an important part of the Australian lifestyle. The beach is more than just a place to swim; it's a central pillar of national identity and a way of life. 'Life's a beach' encompasses several key aspects of Australian settler culture.

* "Planned retreat often provokes intense backlash from Australian communities on the front line of climate change. Backlash is often swift when authorities try to plan retreat from the coast. With climate change likely to accelerate extreme weather in Australia, planned or managed retreat – moving people and infrastructure away from these areas – will grow only more important." >>
https://theconversation.com/backlash-is-often-swift-when-authorities-try-to-plan-retreat-from-the-coast-theres-a-better-way-275790
#climate #FossilFuels #RisingSeas #SeaLevelRise #coast #erosion #CoastalCommunities #PlannedRetreat #NationalIdentity #SettlerCulture #NSW