#sealevel — Public Fediverse posts

Neither political donations nor special interest groups should dictate policy | Letters
By Guardian Staff

Readers respond to George Monbiot’s article on Andy Burnham and political donations

https://www.theguardian.com/politics/2026/sep/08/neither-political-donations-nor-special-interest-groups-should-dictate-policy

#Partyfunding #Politics #UKnews #Environment #Sealevel #Environmentpolicy #Labour #Tradeunions #TheGuardian #GuardianStaff

Coastal Flooding At Predictable Hours
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https://doi.org/10.1038/s41467-026-75710-5 <-- shared paper
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H/T @bruna Alves | Nature Communications | Editor
“When do coastal floods happen? ⏱️🌊
A new study [link above] shows that, in many tide-dominated coastal regions, flooding tends to occur at specific and recurring times of day. Rather than being completely random, flood events often cluster around predictable hours driven by local tidal patterns.
By analysing coastal flood observations from the UK and the US, [the authors] show[ed] that the timing of flood events can be highly structured, with some locations experiencing floods disproportionately during certain parts of the day.
This adds a temporal dimension to coastal flood risk. We often focus on how frequently floods occur, how severe they are, and where they happen. This study highlights that when they occur may also matter, particularly as rising sea levels increase the frequency of coastal flooding.
The findings provide a useful perspective for coastal adaptation, risk communication, and emergency planning…”
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“Flooding is typically perceived as a sudden and unpredictable hazard. Here, [they] show that recurrent flooding can occur at highly predictable times in tidally dominated coastal systems. This predictability stems from phase-locking of tidal constituents and constituent pairs with the solar day, causing peak tides to recur at consistent local times set by regional tidal propagation. Using tide-gauge records from the United States and the United Kingdom, [they] quantif[ied] the intraday timing of coastal flood events and show strong clustering at specific hours, particularly where semidiurnal or mixed tides dominate. For example, floods in Boston cluster around noon and midnight, whereas in southern California they occur in the morning. Sites with stronger non-tidal variability show weaker clustering. This temporal predictability extends beyond nuisance flooding to larger consequential events involving inundation, road closures and infrastructural damage, highlighting opportunities for anticipatory risk communication, emergency planning and time-sensitive coastal adaptation…”
#coast #coastal #flood #flooding #spatialanalysis #spatiotemporal #time #statistics #geostatistics #tide #tidal #timing #temporal #floodrisk #risk #hazard #sealevel #sealevelrise #climatechange #emergency #planning #tideguage #UK #USA #innundation #infrastructure #transportation #riskcommunication

Sea Levels Rising Dramatically In Some Areas Due To Land Subsidence [global]
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https://phys.org/news/2026-05-sea-areas-due-subsidence.html <-- shared technical article
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https://doi.org/10.1038/s41467-026-72293-z <-- shared paper
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[#VLM = vertical land motion; #ASL = absolute sea-level; #RSL = relative sea-level; #GIA = (global) Glacial Isostatic Adjustment; #inSAR = Interferometric Synthetic Aperture Radar; #GNSS = Global Navigation Satellite System (~GPS); #OE24 = paper, https://doi.org/10.1038/s41561-023-01357-2, interpolated VLM reconstruction based on the joint analysis of GNSS, tide gauges (TGs), and satellite altimetry]
#GIS #spatial #mapping #remotesensing #earthobservation #sealevel #verticallandmotion #absolutesealevel #relativesealevel #GlacialIsostaticAdjustment #geomorphometry #SLR #sealevelrise #coast #coastal #flood #flooding #subsidence #landmass #landsubsidence #global #globalsealevelrise #climatechange #city #urban #farmlands #population #demographics #cities #planning #community #elevation #monitoring #spatialanalysis #spatiotemporal #altimetry

Advancing Compound Flood Modeling to Evaluate Coastal Protection Benefits of Natural Infrastructure
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https://coastalscience.noaa.gov/news/advancing-compound-flood-modeling-to-evaluate-coastal-protection-benefits-of-natural-infrastructure/ <-- shared technical article
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https://doi.org/10.1016/j.scitotenv.2024.173529 <-- shared paper
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#flood #flooding #literaturesearch #compilation #coast #coastal #coastalengineering #mitigation #planning #management #framework #model #modeling #infrastructure #natural #barrier #rainfall #precipitation #climatechange #river #discharge #stormsurge #sealevel #seallevelrise #waves #tides #compoundflooding #humanimpacts #communities #publicsafety #cost #loss #economics #fedscience #fedservice #hydrology #water #marine #ocean #hydraulic #hydrodynamic #biology #ecosystems #vegetation #sedimentation #erosion #GIS #spatial #mapping #spatialanalysis #regional #local #forecasting #preparation #enduser #usecase #publicwarnings #marsh #sawmp #mangrove
@NOAA | @NOAA Ocean | @NOAA Centers for Coastal Ocean Science

Data In Action: The 2022 Hunga-Tonga Hunga-Ha′Apai Eruption - Altimetry Data And Models Help Us Understand How A Volcanic Eruption Generated A Tsunami
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https://podaac.jpl.nasa.gov/DataAction-2025-03-20-The-2022-Hunga-Tonga-Hunga-Haapai-eruption-Altimetry-data-and-models-help-us-understand-how-a-volcanic-eruption-generated-a-tsunami <-- shared technical article
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https://doi.org/10.1038/s43247-024-01694-z <-- shared paper
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https://podaac.jpl.nasa.gov/dataset/JASON_CS_S6A_L2_ALT_LR_RED_OST_NTC_F08 <-- shared NASA dataset - Sentinel-6A MF Jason-CS L2 P4 Altimeter Low Resolution (LR) NTC Reduced Ocean Surface Topography F08
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#GIS #spatial #mapping #earthobservation #remotesensing #fedscience #tonga #HungaTonga #HungaHaApai #eruption #volcanic #volcano #Pacific #marine #geology #engineeringgeology #risk #hazard #satellite #altimetry #data #model #model #spatialanalysis #Tsunami #risk #hazard #monitoring #coast #coastal #naturalhazard #Sentinel #sealevel #warning #earlywarning
@nasa

Our Very Strange Search for ‘Sea Level’
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https://www.newyorker.com/magazine/2024/08/26/our-very-strange-search-for-sea-level <-- shared media/technical article
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#GIS #spatial #mapping #elevation #vertical #geoid #datum #verticaldatum #sealevel #risingsealevel #RSL #climatechange #survey #change #geology #isostaticrebound #glaciation #groundwater #subsidence #remotesensing #GPS #LiDAR #altimetry #change #spatialanalysis #model #modeling #spatiotemporal #sealrock #meansealevel #NGVD29 #NAVD88

Researchers Reconstruct Landscapes That Greeted The First Humans In Australia Around 65,000 Years Ago
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https://phys.org/news/2024-04-reconstruct-landscapes-humans-australia-years.html <-- shared technical article
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https://doi.org/10.1038/s41467-024-47662-1 <-- shared paper
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#GIS #spatial #mapping #anthropology #archaeology #indigenous #migration #sahul #Australia #aboriginal #FirstNation #spatialanalysis #spatiotemporal #NewGuinea #Tasmania #sealevel #hominin #hominoid #landscape #evolution #climatechange #megafauna #population #demographics #environment #environmental #climatechange #landscapeevolution #model #modeling #terrains #foodsecurity #watersecurity #drivers #huntergatherers #community #simulations #physiographic #physiography

The East Coast Is Sinking [USA]
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https://www.nytimes.com/interactive/2024/02/13/climate/flooding-sea-levels-groundwater.html <-- shared media article
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https://doi.org/10.1093/pnasnexus/pgad426 <-- shared paper
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#GIS #spatial #mapping #gischat #remotesensing #subsidence #EastCoast #USA #groundwater #pumping #overextraction #depletion #aquifers #waterresources #saltwaterintrusion #coast #coastal #engineeringgeology #soils #reclamation #sediments #compaction #water #hydrology #dewatering #SLR #sealevel #sealevelrise #climatechange #SLR #glacial #isostaticrebound #geology #landmovement #sedimentation #USGS
@USGS

Study finds ‘direct evidence’ of #polar amplification on continent as scientists warn of implications of #ice loss. #Antarctica is likely #warming @ almost 2x rate of rest of world & faster than #climatechange models are predicting w far-reaching implications for #global #sealevel rise. #Scientists analysed 78 Antarctic #icecores to recreate temperatures going back 1,000 yrs & found the warming across continent was outside what could be expected from natural swings. https://www.theguardian.com/world/2023/sep/08/antarctica-warming-much-faster-than-models-predicted-in-deeply-concerning-sign-for-sea-levels

Study finds ‘direct evidence’ of #polar amplification on continent as scientists warn of implications of #ice loss. #Antarctica is likely #warming @ almost 2x rate of rest of world & faster than #climatechange models are predicting w far-reaching implications for #global #sealevel rise. #Scientists analysed 78 Antarctic #icecores to recreate temperatures going back 1,000 yrs & found the warming across continent was outside what could be expected from natural swings. https://www.theguardian.com/world/2023/sep/08/antarctica-warming-much-faster-than-models-predicted-in-deeply-concerning-sign-for-sea-levels

Study finds ‘direct evidence’ of #polar amplification on continent as scientists warn of implications of #ice loss. #Antarctica is likely #warming @ almost 2x rate of rest of world & faster than #climatechange models are predicting w far-reaching implications for #global #sealevel rise. #Scientists analysed 78 Antarctic #icecores to recreate temperatures going back 1,000 yrs & found the warming across continent was outside what could be expected from natural swings. https://www.theguardian.com/world/2023/sep/08/antarctica-warming-much-faster-than-models-predicted-in-deeply-concerning-sign-for-sea-levels

Study finds ‘direct evidence’ of #polar amplification on continent as scientists warn of implications of #ice loss. #Antarctica is likely #warming @ almost 2x rate of rest of world & faster than #climatechange models are predicting w far-reaching implications for #global #sealevel rise. #Scientists analysed 78 Antarctic #icecores to recreate temperatures going back 1,000 yrs & found the warming across continent was outside what could be expected from natural swings. https://www.theguardian.com/world/2023/sep/08/antarctica-warming-much-faster-than-models-predicted-in-deeply-concerning-sign-for-sea-levels

Study finds ‘direct evidence’ of #polar amplification on continent as scientists warn of implications of #ice loss. #Antarctica is likely #warming @ almost 2x rate of rest of world & faster than #climatechange models are predicting w far-reaching implications for #global #sealevel rise. #Scientists analysed 78 Antarctic #icecores to recreate temperatures going back 1,000 yrs & found the warming across continent was outside what could be expected from natural swings. https://www.theguardian.com/world/2023/sep/08/antarctica-warming-much-faster-than-models-predicted-in-deeply-concerning-sign-for-sea-levels

World's Beaches Are Changing Because Of Climate Change
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https://theconversation.com/worlds-beaches-are-changing-because-of-climate-change-green-thinking-is-needed-to-save-them-211953 <-- shared article
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https://doi.org/10.1080/03736245.2023.2193565 <-- shared paper
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#GIS #spatial #mapping #anthropogenic #climatechange #coast #coastline #coastalprocesses #greeninfrastructure #sandybeaches #beaches #mitigation #coastalengineering #coastalcommunities #mangroves #rockyshorelines #rivers #estuaries #hydro #water #hydrospatial #sanddunes #landforms #geomorphology #sealevel #SLR #sealevelrise #Anthropocene #sediment #sedimentation #innundation #erosion #protection #urbanisation #landusechange #landuseplanning #planning #resilience #ecosystems #environmental #solutions #ecology #engineeringgeology #southafrica

Improving Coastal Resiliency With Digital Elevation Models [NOAA / NCEI]
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https://www.ncei.noaa.gov/news/improving-coastal-resiliency-digital-elevation-models <-- shared article
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https://www.ncei.noaa.gov/maps/bathymetry/ <-- NOAA NCEI Bathymetry Viewer
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https://coast.noaa.gov/dataviewer/#/lidar/search/ <-- NOAA Office for Coastal Management’s Digital Coast: Data Access Viewer
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#GIS #spatial #mapping #Oceans #Bathymetry #Maps #DataVisualization #Models #modeling #environmental #water #hydrology #hydrospatial #hydrography #bathymetry #topobathy #coast #coastal #climatechange #resiliency #mitigation #planning #prediction #elevation #DEM #flooding #sealevelrise #SLR #sealevel #NCEI #NOAA #USGS #CUDEMS #ETOPO #event #hazard #tsunami #remotesensing #extremeweather #hurricane #planning #spatialanalysis #coastalresilience #coastalcommunities #coastaldesign #stormsurge