Communications Earth & Environment最新文献_第3页

X-Ray micro-tomography unveils the internal features of volcanic ash aggregates. x射线显微断层摄影揭示了火山灰聚集体的内部特征。

IF 8.1 1区地球科学

Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-07-03 DOI: 10.1038/s43247-025-02378-y

Pietro Gabellini, Eduardo Rossi, Raffaello Cioni, Marco Pistolesi, Lukas P Baumgartner, Costanza Bonadonna

{"title":"X-Ray micro-tomography unveils the internal features of volcanic ash aggregates.","authors":"Pietro Gabellini, Eduardo Rossi, Raffaello Cioni, Marco Pistolesi, Lukas P Baumgartner, Costanza Bonadonna","doi":"10.1038/s43247-025-02378-y","DOIUrl":"10.1038/s43247-025-02378-y","url":null,"abstract":"Volcanic ash aggregation occurs during transport in the atmosphere when individual ash particles collide and stick together. It significantly impacts ash residence time in the atmosphere, with major consequences for hazard assessment and ash dispersal forecasts. Nonetheless, aggregation processes are still not adequately parametrized, mostly due to the low preservation potential of most aggregate types. We present here the first, detailed structural and morphological characterization of the major aggregate types, combining an innovative field collection strategy, which allows for the original aggregate structure to be preserved at deposition, coupled to X-Ray micro-tomography. Resulting observations together with weather information, allowed for the structure of fragile ash clusters and of the elusive cored Ash Pellets (cAP1s) to be fully resolved and their genesis to be better described. The collected dataset represents a fundamental advancement towards a comprehensive characterization of the principal aggregate categories, which is key to accurately interpreting and modelling the process of volcanic ash aggregation and dispersal.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"6 1","pages":"521"},"PeriodicalIF":8.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12226349/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144574968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The presence of ancient subducted oceanic crust contributes to seismic anomalies in Large Low Shear Velocity Provinces. 古洋壳俯冲的存在导致了大低剪切速度省的地震异常。

IF 8.9 1区地球科学

Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-08-28 DOI: 10.1038/s43247-025-02700-8

Ewa Krymarys, Motohiko Murakami, Pinku Saha, Christian Liebske

{"title":"The presence of ancient subducted oceanic crust contributes to seismic anomalies in Large Low Shear Velocity Provinces.","authors":"Ewa Krymarys, Motohiko Murakami, Pinku Saha, Christian Liebske","doi":"10.1038/s43247-025-02700-8","DOIUrl":"10.1038/s43247-025-02700-8","url":null,"abstract":"Large Low Shear Velocity Provinces (LLSVPs) near the core-mantle boundary (CMB) are key yet enigmatic structures. Their origin is often linked to the accumulation of subducted mid-ocean ridge basalt (MORB), but computational models question MORB as the sole source due to its predicted high shear wave velocity compared to normal mantle. This uncertainty is compounded by the lack of direct sound velocity measurements at CMB pressures. Here we address this gap through ultrahigh-pressure shear wave velocity measurements on CaCl2- and α-PbO2-type SiO2, major phases in MORB, at pressures exceeding those of the CMB. Our results show shear velocities in dense SiO2 phases are ~ 7-14% lower than previous predictions under these conditions. Incorporating these values into MORB models suggests that the typical seismic anomaly of -1.5% (δlnV S ) observed in LLSVPs can be explained by ~ 23-33 vol.% oceanic crust along a cold slab geotherm, without invoking extreme thermal anomalies (+1500 K). Considering a subduction history exceeding 2 billion years, this scenario supports long-term MORB accumulation at the lowermost mantle. These findings provide new constraints on LLSVP composition and offer critical insights into deep mantle dynamics and the evolution of Earth's interior.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"6 1","pages":"713"},"PeriodicalIF":8.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12394072/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144945702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mid-Miocene warmth pushed fossil coral calcification to physiological limits in high-latitude reefs. 中新世中期的温暖将高纬度珊瑚礁的化石珊瑚钙化推到了生理极限。

IF 8.1 1区地球科学

Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-07-19 DOI: 10.1038/s43247-025-02559-9

Markus Reuter, Juan P D'Olivo, Thomas C Brachert, Philipp M Spreter, Regina Mertz-Kraus, Claudia Wrozyna

{"title":"Mid-Miocene warmth pushed fossil coral calcification to physiological limits in high-latitude reefs.","authors":"Markus Reuter, Juan P D'Olivo, Thomas C Brachert, Philipp M Spreter, Regina Mertz-Kraus, Claudia Wrozyna","doi":"10.1038/s43247-025-02559-9","DOIUrl":"10.1038/s43247-025-02559-9","url":null,"abstract":"The history of resilience of organisms over geologic timescales serves as a reference for predicting their response to future conditions. Here we use fossil Porites coral records of skeletal growth and environmental variability from the subtropical Central Paratethys Sea to assess coral resilience to past ocean warming and acidification. These records offer a unique perspective on the calcification performance and environmental tolerances of a major present-day reef builder during the globally warm mid-Miocene CO2 maximum and subsequent climate transition (16 to 13 Ma). We found evidence for up-regulation of the pH and saturation state of the corals' calcifying fluid as a mechanism underlying past resilience. However, this physiological control on the internal carbonate chemistry was insufficient to counteract the sub-optimal environment, resulting in an extremely low calcification rate that likely affected reef framework accretion. Our findings emphasize the influence of latitudinal seasonality on the sensitivity of coral calcification to climate change.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"6 1","pages":"569"},"PeriodicalIF":8.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12274133/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144674033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Land-based sensors reveal high frequency of coastal flooding. 陆基传感器揭示了沿海洪水的高频率。

IF 8.1 1区地球科学

Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-06-02 DOI: 10.1038/s43247-025-02326-w

Miyuki Hino, Katherine Anarde, Tessa Fridell, Ryan McCune, Thomas Thelen, Elizabeth Farquhar, Perri Woodard, Anthony Whipple

引用次数: 0

Wildfire, ecosystem, and climate interactions in the Early Triassic. 早三叠纪野火、生态系统和气候的相互作用。

IF 8.9 1区地球科学

Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-10-21 DOI: 10.1038/s43247-025-02789-x

Franziska R Blattmann, Charline Ragon, Torsten W Vennemann, Elke Schneebeli-Hermann, Christian Vérard, Jérôme Kasparian, Maura Brunetti, Hugo F R Bucher, Thierry Adatte, Clayton R Magill

{"title":"Wildfire, ecosystem, and climate interactions in the Early Triassic.","authors":"Franziska R Blattmann, Charline Ragon, Torsten W Vennemann, Elke Schneebeli-Hermann, Christian Vérard, Jérôme Kasparian, Maura Brunetti, Hugo F R Bucher, Thierry Adatte, Clayton R Magill","doi":"10.1038/s43247-025-02789-x","DOIUrl":"https://doi.org/10.1038/s43247-025-02789-x","url":null,"abstract":"Wildfires are a key component of Earth system dynamics with respect to carbon cycling. Thus, reconstructing past wildfire dynamics is crucial for understanding potential future climate change as related to (paleo)environmental feedbacks. Here, we explore wildfire during the Early Triassic (Smithian and Spathian, ca. 250 million years ago) - a time interval characterized by scarce fire evidence, perturbation of the carbon cycle, climatic oscillations, vegetation succession and biotic radiation-extinction pulses - using polyaromatic hydrocarbons, which are an organic (geo)chemical fire indicator in sediments. Hydrocarbon abundances in shales from Spitsbergen show a prominent increase after the Smithian-Spathian boundary. Diagnostic ratios of hydrocarbons suggest that these compounds were derived from relatively unaltered biomass as opposed to soil erosion and petrogenic carbon inputs or coal combustion vis-à-vis a coincidental Siberian Trap volcanism. Our data indicates that as temperatures decline during the late Smithian, coeval hydrological conditions become less intense and changing vegetation successions become more amenable to wildfire activity. We hypothesize that changing regional wildfire regimes influenced biogeochemical cycles, potentially affecting long-term carbon sequestration. The observed coupled behavior in water-vegetation-wildfire systems amid key perturbations in Earth's history provides new insights into imminent future climate change consequences.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"6 1","pages":"830"},"PeriodicalIF":8.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12540185/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145354005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A transdisciplinary, comparative analysis reveals key risks from Arctic permafrost thaw. 一项跨学科的比较分析揭示了北极永久冻土融化的主要风险。

IF 8.1 1区地球科学

Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-01-16 DOI: 10.1038/s43247-024-01883-w

Susanna Gartler, Johanna Scheer, Alexandra Meyer, Khaled Abass, Annett Bartsch, Natalia Doloisio, Jade Falardeau, Gustaf Hugelius, Anna Irrgang, Jón Haukur Ingimundarson, Leneisja Jungsberg, Hugues Lantuit, Joan Nymand Larsen, Rachele Lodi, Victoria Sophie Martin, Louise Mercer, David Nielsen, Paul Overduin, Olga Povoroznyuk, Arja Rautio, Peter Schweitzer, Niek Jesse Speetjens, Soňa Tomaškovičová, Ulla Timlin, Jean-Paul Vanderlinden, Jorien Vonk, Levi Westerveld, Thomas Ingeman-Nielsen

{"title":"A transdisciplinary, comparative analysis reveals key risks from Arctic permafrost thaw.","authors":"Susanna Gartler, Johanna Scheer, Alexandra Meyer, Khaled Abass, Annett Bartsch, Natalia Doloisio, Jade Falardeau, Gustaf Hugelius, Anna Irrgang, Jón Haukur Ingimundarson, Leneisja Jungsberg, Hugues Lantuit, Joan Nymand Larsen, Rachele Lodi, Victoria Sophie Martin, Louise Mercer, David Nielsen, Paul Overduin, Olga Povoroznyuk, Arja Rautio, Peter Schweitzer, Niek Jesse Speetjens, Soňa Tomaškovičová, Ulla Timlin, Jean-Paul Vanderlinden, Jorien Vonk, Levi Westerveld, Thomas Ingeman-Nielsen","doi":"10.1038/s43247-024-01883-w","DOIUrl":"10.1038/s43247-024-01883-w","url":null,"abstract":"Permafrost thaw poses diverse risks to Arctic environments and livelihoods. Understanding the effects of permafrost thaw is vital for informed policymaking and adaptation efforts. Here, we present the consolidated findings of a risk analysis spanning four study regions: Longyearbyen (Svalbard, Norway), the Avannaata municipality (Greenland), the Beaufort Sea region and the Mackenzie River Delta (Canada) and the Bulunskiy District of the Sakha Republic (Russia). Local stakeholders' and scientists' perceptions shaped our understanding of the risks as dynamic, socionatural phenomena involving physical processes, key hazards, and societal consequences. Through an inter- and transdisciplinary risk analysis based on multidirectional knowledge exchanges and thematic network analysis, we identified five key hazards of permafrost thaw. These include infrastructure failure, disruption of mobility and supplies, decreased water quality, challenges for food security, and exposure to diseases and contaminants. The study's novelty resides in the comparative approach spanning different disciplines, environmental and societal contexts, and the transdisciplinary synthesis considering various risk perceptions.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"6 1","pages":"21"},"PeriodicalIF":8.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11738985/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143001476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Revisiting the Last Ice Area projections from a high-resolution Global Earth System Model. 从高分辨率全球地球系统模型重新审视末冰区预测。

IF 8.1 1区地球科学

Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-01-23 DOI: 10.1038/s43247-025-02034-5

Madeleine Fol, Bruno Tremblay, Stephanie Pfirman, Robert Newton, Stephen Howell, Jean-François Lemieux

引用次数: 0

Carbon removal support is tempered by concerns over whether biological methods are worth it. 人们对生物方法是否值得的担忧削弱了对碳去除的支持。

IF 8.9 1区地球科学

Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-08-28 DOI: 10.1038/s43247-025-02654-x

Emily Cox, Laurie Waller, James Palmer, Rob Bellamy

{"title":"Carbon removal support is tempered by concerns over whether biological methods are worth it.","authors":"Emily Cox, Laurie Waller, James Palmer, Rob Bellamy","doi":"10.1038/s43247-025-02654-x","DOIUrl":"10.1038/s43247-025-02654-x","url":null,"abstract":"Biological carbon removal has been proposed as a 'win-win' for climate, sustainability and public opinion, but research on public perceptions is lacking explicit evidence on trade-offs between options. Here we explore perceptions using small group deliberation (n60) plus a nationally representative survey (n2027) in the UK's four jurisdictions. We find a strong preference for carbon removal to play a substantial role in meeting national climate targets, stemming from persistent scepticism about emissions reductions and behaviour change. However, such support was tempered with caution about whether certain biological techniques - biochar, peatland restoration, and perennial biomass crops - would be \"worth it\". In particular, concerns were raised about life-cycle emissions, as well as land competition with urgent housing needs, and scientific uncertainty around novel techniques such as biochar. While we find that responses to carbon removal tend to shift the burden of responsibility for climate action away from individuals, we also identify region-specific discourses, highlighting the importance of local context in shaping public views.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"6 1","pages":"711"},"PeriodicalIF":8.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12394068/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144945612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stratospheric aerosol injection can weaken the carbon dioxide greenhouse effect. 平流层气溶胶注入可以减弱二氧化碳的温室效应。

IF 8.1 1区地球科学

Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-06-20 DOI: 10.1038/s43247-025-02466-z

Haozhe He, Brian J Soden, Gabriel A Vecchi, Wenchang Yang

{"title":"Stratospheric aerosol injection can weaken the carbon dioxide greenhouse effect.","authors":"Haozhe He, Brian J Soden, Gabriel A Vecchi, Wenchang Yang","doi":"10.1038/s43247-025-02466-z","DOIUrl":"10.1038/s43247-025-02466-z","url":null,"abstract":"Stratospheric aerosol injection is a proposed method for offsetting greenhouse gas-induced warming by introducing scattering aerosols into the lower stratosphere to reflect sunlight. Here we explore a potentially more efficient alternative: weakening the Earth's greenhouse effect by deploying absorptive aerosols in the upper stratosphere (~10 hPa). These aerosols warm the carbon dioxide emission level-where outgoing longwave radiation is most sensitive to temperature-thereby enhancing top-of-atmosphere infrared emission without altering atmospheric carbon dioxide concentrations. Idealized climate model simulations indicate that this approach can reduce global temperatures an order of magnitude more efficiently per unit aerosol mass than conventional scattering-based interventions. Although based on simplified model experiments lacking interactive aerosol processes and operational constraints, our results identify a distinct physical mechanism for climate intervention, arguing for further research into the impacts-especially potential unintended side effects-of injecting absorptive aerosols into the upper stratosphere as an alternative solar radiation management strategy.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"6 1","pages":"485"},"PeriodicalIF":8.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12181077/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144368706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The palaeoenvironmental potential of bioarchaeological isotope data. 生物考古同位素资料的古环境潜力。

IF 8.1 1区地球科学

Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-07-01 DOI: 10.1038/s43247-025-02507-7

Margaux L C Depaermentier, Michael Kempf, Marc Vander Linden, Kate Britton, Richard Madgwick, Ulf Büntgen, Dorothée G Drucker, Jennifer R Jones, Christophe Snoeck, Rhiannon E Stevens

引用次数: 0