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| Open AccessGlobal LiDAR land elevation data reveal greatest sea-level rise vulnerability in the tropics
Predicting the risk of flooding in coastal environments relies on accurate land elevation data, but this is not available in many parts of the world. Here the authors apply a global lowland digital terrain model derived from satellite LiDAR and determine that the regions most vulnerable to sea-level rise are in the tropics.
- A. Hooijer
- & R. Vernimmen
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Article
| Open AccessClimate pacing of millennial sea-level change variability in the central and western Mediterranean
How sea-level in the western Mediterranean reacts to climate changes is not well known. Here, the authors present a regional reconstruction and show that temperatures influenced sea-level change rates during the Holocene, while recent sea-level rise is happening faster than during any other period of the last 4000 years.
- Matteo Vacchi
- , Kristen M. Joyse
- & Alessio Rovere
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Article
| Open AccessTectonic and climatic drivers of Asian monsoon evolution
The drivers of monsoon systems in the past are not well known. Here, the authors present a model-based reconstruction of the last 30 million years and show that the south east Asian monsoon evolution is dominated by orographic development while the strength of the Indian Summer monsoon is controlled by a combination of factors.
- James R. Thomson
- , Philip B. Holden
- & Nigel B. W. Harris
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Article
| Open AccessDinosaur biodiversity declined well before the asteroid impact, influenced by ecological and environmental pressures
Dinosaurs are thought to have been driven extinct by an asteroid impact 66 million years ago. Here, Condamine et al. show that six major dinosaur families were already in decline in the preceding 10 million years, possibly due to global cooling and competition among herbivores.
- Fabien L. Condamine
- , Guillaume Guinot
- & Philip J. Currie
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Article
| Open AccessThe Great Oxygenation Event as a consequence of ecological dynamics modulated by planetary change
The Great Oxygenation Event (GOE) 2.4 billion years ago is believed to have been critical for the evolution of complex life. Here, Olejarz et al. propose a model suggesting that competition between major bacterial groups could have triggered the GOE in a feedback loop with geophysical processes.
- Jason Olejarz
- , Yoh Iwasa
- & Martin A. Nowak
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Article
| Open AccessShallow slow earthquakes to decipher future catastrophic earthquakes in the Guerrero seismic gap
New offshore observations in the Guerrero seismic gap discovered shallow slow earthquakes, which suggest that a portion of the plate interface undergoes stable slip. This may explain the long return period of large earthquakes and why have previous large earthquakes not propagated into the gap.
- R. Plata-Martinez
- , S. Ide
- & Y. Ito
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Article
| Open AccessStorage and export of microbial biomass across the western Greenland Ice Sheet
Microbes that colonise ice sheet surfaces are important to the carbon cycle, but their biomass and transport remains unquantified. Here, the authors reveal substantial microbial carbon fluxes across Greenland’s ice surface, in quantities that may sustain subglacial heterotrophs and fuel methanogenesis.
- T. D. L. Irvine-Fynn
- , A. Edwards
- & A. Hubbard
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Article
| Open AccessHydraulic transmissivity inferred from ice-sheet relaxation following Greenland supraglacial lake drainages
Hydraulic transmissivity under the 1km-thick Greenland Ice Sheet was inferred by ice-sheet uplift relaxation after rapid lake drainage events. A two-order-of-magnitude increase in hydraulic transmissivity was found throughout the melt season.
- Ching-Yao Lai
- , Laura A. Stevens
- & Howard A. Stone
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Article
| Open AccessImpact of an accelerated melting of Greenland on malaria distribution over Africa
Release of freshwater into the oceans as a result of ice sheet melting could impact the distribution of climate-sensitive diseases. Here, the authors show that a rapid ice sheet melting in Greenland could cause an emergence of malaria in Southern Africa whilst transmission risks in West Africa may decline.
- Alizée Chemison
- , Gilles Ramstein
- & Cyril Caminade
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Article
| Open AccessSunda arc mantle source δ18O value revealed by intracrystal isotope analysis
Subduction zone volcanoes are underlain by extensive magma plumbing systems, which can obscure original mantle source signals. Here, the authors show that intra-crystal oxygen isotope analysis of clinopyroxenes from the Sunda arc (Indonesia) reveal the δ18 O value of the sub-arc mantle.
- Frances M. Deegan
- , Martin J. Whitehouse
- & Osvaldo González-Maurel
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Article
| Open AccessOrbital- and millennial-scale Antarctic Circumpolar Current variability in Drake Passage over the past 140,000 years
How the Antarctic Circumpolar Current (ACC) changed on glacial-interglacial time scales is not well known. Here, the authors present a 140,000 year long sediment record from the Drake passage and show both glacial-interglacial as well as millennial-scale variability which are linked to Atlantic variability and marine carbon storage.
- Shuzhuang Wu
- , Lester Lembke-Jene
- & Gerhard Kuhn
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Article
| Open AccessOcean-bottom and surface seismometers reveal continuous glacial tremor and slip
Anomalously slow earthquakes play a critical role in the earthquake cycle and fault sliding. Here, the authors detect continuous seismic radiation from a glacier sliding over its bed and show persistent coastal shaking to represent an addition to the family of slow earthquakes.
- Evgeny A. Podolskiy
- , Yoshio Murai
- & Shin Sugiyama
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Article
| Open AccessContrasting responses of above- and belowground diversity to multiple components of land-use intensity
Land use intensification is a major driver of biodiversity change. Here the authors measure diversity across multiple trophic levels in agricultural grassland landscapes of varying management, finding decoupled responses of above- and belowground taxa to local factors and a strong impact of landscape-level land use.
- Gaëtane Le Provost
- , Jan Thiele
- & Peter Manning
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Article
| Open AccessApproximate Bayesian Computation of radiocarbon and paleoenvironmental record shows population resilience on Rapa Nui (Easter Island)
Summed probability distributions of radiocarbon dates can be used to estimate past demography, but methods to test for associations with environmental change are lacking. Here, DiNapoli et al. propose an approach using Approximate Bayesian Computation and illustrate it in a case study of Rapa Nui.
- Robert J. DiNapoli
- , Enrico R. Crema
- & Terry L. Hunt
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Article
| Open AccessIndia-Asia collision as a driver of atmospheric CO2 in the Cenozoic
“Earth degassing is a critical carbon source, but its contribution to Cenozoic atmospheric CO2 variations is not well known. Here, the authors analyse CO2 fluxes on the Tibetan Plateau and suggest that the India-Asia collision was the primary driver of changes in atmospheric CO2 over the past 65 Ma.”
- Zhengfu Guo
- , Marjorie Wilson
- & Jiaqi Liu
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Article
| Open AccessClimate change favours large seasonal loss of Arctic ozone
Despite a ban on ozone depleting substances, ozone depletion during cold winters in the Arctic stratosphere has been increasing in recent decades. Here, the authors show conditions favourable for Arctic ozone depletion could worsen as a response of stratospheric temperature and water to continued release of greenhouse gases.
- Peter von der Gathen
- , Rigel Kivi
- & Markus Rex
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Article
| Open AccessThermal state and evolving geodynamic regimes of the Meso- to Neoarchean North China Craton
Constraining the thermal state of the lithosphere is crucial to understanding geodynamic regime in early Earth. Here the authors reconstruct ~2.9–2.5 Ga thermal structure of continental lithosphere of the North China Craton using TTG and propose a systematic Archean geodynamic evolution process.
- Guozheng Sun
- , Shuwen Liu
- & Fangyang Hu
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Article
| Open AccessQuantitative comparison of geological data and model simulations constrains early Cambrian geography and climate
There is a lot of uncertainty about what Earth’s climate and geography were like in the early Cambrian, when animal life diversified throughout the oceans. Here we show that numeric comparisons of model simulations and climatically influenced rocks can help constrain geography and climate during this time.
- Thomas W. Wong Hearing
- , Alexandre Pohl
- & Thijs R. A. Vandenbroucke
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Article
| Open AccessCo-benefits of protecting mangroves for biodiversity conservation and carbon storage
Conserving mangrove biodiversity has numerous co-benefits, including climate change-mitigation. Here the authors demonstrate that blue carbon storage in mangroves can be best sustained by combining site-specific dominant species with other species with contrasting functional traits.
- Md Mizanur Rahman
- , Martin Zimmer
- & Ming Xu
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Article
| Open AccessThe perpetual fragility of creeping hillslopes
The downhill motion of soils on hillslopes is not well understood. Here, the authors present laboratory experiments and show that hillslopes are made perpetually fragile by environmental perturbations that prevent them from stabilizing.
- Nakul S. Deshpande
- , David J. Furbish
- & Douglas J. Jerolmack
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Article
| Open AccessMelt volume at Atlantic volcanic rifted margins controlled by depth-dependent extension and mantle temperature
Magmatic productivity at passive margins is controlled by mantle temperature and rifting style. The authors reveal that melt volume at rifted margins is linearly correlated with margin width and that volcanic margins may result from depth dependent extension without high temperature mantle plumes.
- Gang Lu
- & Ritske S. Huismans
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Article
| Open AccessCommercial afforestation can deliver effective climate change mitigation under multiple decarbonisation pathways
Afforestation is an important greenhouse gas (GHG) mitigation strategy but the efficacy of commercial (harvested) forestry is disputed. Here the authors apply dynamic life cycle assessment to show that new commercial conifer forests can achieve up to 269% more GHG mitigation than semi-natural forests, over 100 years.
- Eilidh J. Forster
- , John R. Healey
- & David Styles
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Article
| Open AccessEvaluating the climate impact of aviation emission scenarios towards the Paris agreement including COVID-19 effects
Aviation contributes to climate change and ways to reduce its emissions are widely debated. Here, the authors assess the effects of technology improvements and the use of sustainable aviation fuels and find that even when these are considered aviation is unlikely to meet emissions goals in line with the Paris Agreement.
- Volker Grewe
- , Arvind Gangoli Rao
- & Katrin Dahlmann
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Article
| Open AccessGlobal coastal attenuation of wind-waves observed with radar altimetry
Reprocessed data from satellite altimetry show that the mean significant wave height decreases globally by 22% on average from 30 km to 3 km from the coast. By combining these data with wave period from reanalysis, we estimate a mean reduction of 38% concerning the mean wave energy flux.
- Marcello Passaro
- , Mark A. Hemer
- & Florian Seitz
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Matters Arising
| Open AccessInadequate methods undermine a study of malaria, deforestation and trade
- Nikolas Kuschnig
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Article
| Open AccessLarge model structural uncertainty in global projections of urban heat waves
Understanding the uncertainties associated with urban heat wave (UHW) projection is critical for local actions to mitigate extreme heat risks in cities. Here, the authors show that choices of model structural design contribute a large proportion of the uncertainty in projecting UHWs under climate change.
- Zhonghua Zheng
- , Lei Zhao
- & Keith W. Oleson
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Review Article
| Open AccessCity footprints and SDGs provide untapped potential for assessing city sustainability
Whether or not a city achieves absolute sustainability is difficult to assess with existing frameworks. Here the authors, in a review, show that a further integration of consumption-based accounting and benchmarking is necessary to aid the monitoring and assessment of Sustainable Development Goals in cities.
- Thomas Wiedmann
- & Cameron Allen
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Article
| Open AccessA global analysis of extreme coastal water levels with implications for potential coastal overtopping
As sea levels rise, coasts are being increasingly threatened by overtopping caused by the combination of sea level rise, storm surge and wave runup. Here the authors find that global coastal overtopping has increased by over 50% in the last two decades, and under a RCP 8.5 scenario this could increase up to 50 times by 2100 compared to today.
- Rafael Almar
- , Roshanka Ranasinghe
- & Elodie Kestenare
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Article
| Open AccessObserved increasing water constraint on vegetation growth over the last three decades
Jiao et al. conducted a comprehensive evaluation of changes in water constraint on vegetation growth in the extratropical Northern Hemisphere between 1982 and 2015. They document a significant increase in vegetation water constraint over the last three decades.
- Wenzhe Jiao
- , Lixin Wang
- & Paolo D’Odorico
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Article
| Open AccessCollisionless relaxation of a disequilibrated current sheet and implications for bifurcated structures
Bifurcated current sheets are a recurring feature in magnetized space plasmas. Here the authors explain the emergence of bifurcated structures by natural redistributions of single-particle orbits during the collisionless relaxation process of a disequilibrated current sheet.
- Young Dae Yoon
- , Gunsu S. Yun
- & James L. Burch
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Article
| Open AccessEmission impacts of China’s solid waste import ban and COVID-19 in the copper supply chain
Advanced copper supply chain modeling shows China’s new waste trade policy may increase pollution, while limiting other low-value imports reverses this trend. Here the authors show that recycling is vulnerable to supply chain shocks, requiring investment during recoveries to promote a circular economy.
- John Ryter
- , Xinkai Fu
- & Elsa A. Olivetti
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Article
| Open AccessImpact of carbon dioxide removal technologies on deep decarbonization of the electric power sector
Carbon dioxide removal technologies such as bioenergy with carbon capture and direct air can influence power sector planning and operations. Here the authors show how carbon removal options lower costs of deep decarbonization and alter electric sector investments.
- John E. T. Bistline
- & Geoffrey J. Blanford
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Article
| Open AccessMechanistic analysis of multiple processes controlling solar-driven H2O2 synthesis using engineered polymeric carbon nitride
Solar-driven H2O2 production presents a renewable approach to chemical synthesis. Here, authors perform a mechanistic analysis on the contribution of the sodium cyanaminate moiety to the 2-electron oxygen reduction reaction performance of polymeric carbon nitride frameworks.
- Yubao Zhao
- , Peng Zhang
- & Wonyong Choi
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Article
| Open AccessTiming of iceberg scours and massive ice-rafting events in the subtropical North Atlantic
Sediment core analyses and numerical iceberg modeling suggest icebergs from the North American ice sheets were entrained in large glacial meltwater currents and drifted as far south as the Florida Keys several times during the past ~40,000 years.
- Alan Condron
- & Jenna C. Hill
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Article
| Open AccessRadioisotope constraints of Arctic deep water export to the North Atlantic
North Atlantic deep water (NADW) formation influences the climate and carbon cycle, but the contribution of Arctic waters is difficult to constrain. Here the authors use Pa/Th proxy measurements to determine the amount of Arctic Ocean water that flows through the Fram Strait and contributes to NADW.
- Lauren E. Kipp
- , Jerry F. McManus
- & Markus Kienast
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Article
| Open AccessFuture climate change shaped by inter-model differences in Atlantic meridional overturning circulation response
The impacts of the Atlantic Meridional Overturning Circulation (AMOC) decline in future climate change are uncertain. Here the authors show that the inter-model spread in the AMOC response in global climate models amplify uncertainties in the projections of temperature, rainfall and the jet-stream.
- Katinka Bellomo
- , Michela Angeloni
- & Jost von Hardenberg
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Article
| Open AccessSignificant underestimation of radiative forcing by aerosol–cloud interactions derived from satellite-based methods
Satellite-based estimates of radiative forcing by aerosol–cloud interactions are consistently smaller than those from global models, hampering accurate projections of future climate change. Here, the authors show that the discrepancy can be substantially reduced by correcting sampling biases induced by inherent limitations of satellite measurements.
- Hailing Jia
- , Xiaoyan Ma
- & Johannes Quaas
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Article
| Open AccessCross-border climate vulnerabilities of the European Union to drought
European Union’s vulnerability to climate change stretches far beyond its borders. Here the authors find that more than 44% of the EU agricultural imports will become highly vulnerable to drought in future because of climate change.
- Ertug Ercin
- , Ted I. E. Veldkamp
- & Johannes Hunink
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Article
| Open AccessA Late Cretaceous true polar wander oscillation
The authors present a high-resolution palaeomagnetic record for a Late Cretaceous limestone in Italy. They claim that their record robustly shows a ~12° true polar wander oscillation between 86 and 78 Ma, with the greatest excursion at 84–82 Ma.
- Ross N. Mitchell
- , Christopher J. Thissen
- & Joseph L. Kirschvink
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Article
| Open AccessSource sector and fuel contributions to ambient PM2.5 and attributable mortality across multiple spatial scales
Ambient fine particulate matter (PM2.5) is one of the most important environmental health risk factors in many regions. Here, the authors present an assessment of PM2.5 emission sources and the related health impacts across global to sub-national scales and find that over 1 million deaths were avoidable in 2017 by eliminating PM2.5 mass associated with fossil fuel combustion emissions.
- Erin E. McDuffie
- , Randall V. Martin
- & Michael Brauer
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Article
| Open AccessRole of meteorological factors in the transmission of SARS-CoV-2 in the United States
The role of meteorological factors in SARS-COV-2 transmission is not well understood. Here, the authors use county-level data from the United States to the end of 2020 and find evidence of a moderate association between increased transmissibility and cold, dry weather and low ultraviolet radiation.
- Yiqun Ma
- , Sen Pei
- & Kai Chen
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Article
| Open AccessExperimental warming differentially affects vegetative and reproductive phenology of tundra plants
It is unclear whether climate driven phenological shifts of tundra plants are consistent across the plant growing season. Here the authors analyse data from a network of field warming experiments in Arctic and alpine tundra, finding that warming differentially affects the timing and duration of reproductive and vegetative phenology.
- Courtney G. Collins
- , Sarah C. Elmendorf
- & Katharine N. Suding
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Article
| Open AccessElectromagnetic power of lightning superbolts from Earth to space
Superbolts are powerful, rare lightning events. Here, the authors show simultaneous satellite and ground measurements of a superbolt, and demonstrate different properties of superbolts and lightnings.
- J.-F. Ripoll
- , T. Farges
- & S. Pédeboy
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Article
| Open AccessCrustal rejuvenation stabilised Earth’s first cratons
Why Earth’s crust only started becoming widely preserved in the Eoarchaean, 500 Ma after planetary accretion, is poorly understood. Here, the authors document a shift to juvenile magmatic sources in the early Eoarchaean, linking crustal preservation to the formation of stabilising melt-depleted mantle.
- Jacob A. Mulder
- , Oliver Nebel
- & Timothy J. Ivanic
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Article
| Open AccessProjected losses of ecosystem services in the US disproportionately affect non-white and lower-income populations
Social inequalities may be reflected in how ecosystem services are distributed among groups of people. Here the authors estimate the distribution of three ecosystem services across demographic and socioeconomic groups in the US between 2020 and 2100, finding that non-white and lower-income groups disproportionately bear the loss of ecosystem service benefits.
- Jesse D. Gourevitch
- , Aura M. Alonso-Rodríguez
- & Taylor H. Ricketts
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Article
| Open AccessRapid endogenic rock recycling in magmatic arcs
A case study of migmatites indicates that the juvenile arc crust underwent a rapid self-recycling process from arc magmatism to erosion and weathering at the surface, then to burial and remelting. Intra-arc thrust fault systems might efficiently promote endogenous recycling.
- Jun-Yong Li
- , Ming Tang
- & Lin-Sen Li
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Article
| Open AccessLimited application of reflective surfaces can mitigate urban heat pollution
Reflective surfaces have been recommended to mitigate urban heat pollution but can be expensive to apply at a large scale. This work shows that applying them to only the upstream half of a neighborhood can lead to disporportionately high cooling benefits relative to cost.
- Sushobhan Sen
- & Lev Khazanovich
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Article
| Open AccessDislocation interactions in olivine control postseismic creep of the upper mantle
Models of the viscosity evolution of mantle rocks are central to analyses of postseismic deformation but constraints on underlying physical processes are lacking. Here, the authors present measurements of microscale stress heterogeneity in olivine suggesting that long-range dislocation interactions contribute to viscosity evolution.
- David Wallis
- , Lars N. Hansen
- & Ricardo A. Lebensohn
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Article
| Open AccessNitrogen and phosphorus fertilization consistently favor pathogenic over mutualistic fungi in grassland soils
Anthropogenic nutrient enrichment may drive shifts in soil microbial communities. Here, the authors analyse nitrogen and phosphorus addition effects on soil fungi in a distributed grassland experiment across four continents, finding promotion of pathogens, suppression of mutualists, and no shifts in saprotrophs.
- Ylva Lekberg
- , Carlos A. Arnillas
- & Jeremiah A. Henning