Nature Geoscience最新文献

Trade-offs between soil inorganic and organic carbon driven by multiple global environmental changes 多重全球环境变化驱动下土壤无机碳与有机碳之间的权衡

IF 18.3 1区地球科学

Nature Geoscience Pub Date : 2026-10-19 DOI: 10.1038/s41561-026-02135-6

Tongshuo Bai, Yi Wang, Jun Deng, Yunpeng Qiu, Haotian Zhang, Steven J. Hall, Yi Zhang, Shuijin Hu

{"title":"Trade-offs between soil inorganic and organic carbon driven by multiple global environmental changes","authors":"Tongshuo Bai, Yi Wang, Jun Deng, Yunpeng Qiu, Haotian Zhang, Steven J. Hall, Yi Zhang, Shuijin Hu","doi":"10.1038/s41561-026-02135-6","DOIUrl":"https://doi.org/10.1038/s41561-026-02135-6","url":null,"abstract":"Dryland ecosystems store large amounts of both soil organic and inorganic carbon, yet the responses of soil inorganic carbon to global environmental change remain largely overlooked despite the potential vulnerability of this carbon pool. Here we aim to determine how soil inorganic and organic carbon respond to multiple global change drivers (warming, reactive nitrogen input and altered precipitation) using an 8-year field manipulation experiment in a semi-arid grassland and a meta-analysis based on 44 observations. We found that altered precipitation has no effect on soil inorganic carbon, but warming and nitrogen input interactively affect it. Specifically, nitrogen input alone does not affect soil inorganic carbon, but it increases soil inorganic carbon loss (~9.1%) when combined with climate warming. This inorganic carbon loss co-occurs with enhanced microbial nitrogen mineralization and nitrification, suggesting that enhancement of proton production due to nitrification controls soil inorganic carbon dissolution and persistence. Furthermore, both the field study and meta-analysis show that nitrogen input and/or warming induce contrasting changes in soil inorganic and organic carbon, suggesting a trade-off between soil inorganic and organic carbon under these two major global change drivers. These results highlight the need to account for the vulnerability of soil inorganic carbon when predicting dryland carbon dynamics under future climate change scenarios.","PeriodicalId":19053,"journal":{"name":"Nature Geoscience","volume":"12 1","pages":""},"PeriodicalIF":18.3,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149218127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Palaeoclimate constraints narrow uncertainty in future Arctic winter sea ice projections 古气候限制缩小了未来北极冬季海冰预估的不确定性

IF 18.3 1区地球科学

Nature Geoscience Pub Date : 2026-10-16 DOI: 10.1038/s41561-026-02123-w

C. Y. Fu,M. B. Osman,M. A. Aquino-López

{"title":"Palaeoclimate constraints narrow uncertainty in future Arctic winter sea ice projections","authors":"C. Y. Fu,M. B. Osman,M. A. Aquino-López","doi":"10.1038/s41561-026-02123-w","DOIUrl":"https://doi.org/10.1038/s41561-026-02123-w","url":null,"abstract":"Abstract Arctic sea ice decline has been observed across all seasons and is projected to continue in the future. Relative to historical observations, climate models show their largest biases and uncertainties during winter, when ice cover strongly regulates air–sea heat exchange, ocean mixing and atmospheric circulation. Palaeoclimate records offer opportunities to evaluate model performance beyond the historical period, but applications have remained largely qualitative. Here we compile an Arctic-wide database of mid-Holocene (5–7 thousand years ago) biomarkers to assess sea ice simulations of this past warm period. Using a recently developed proxy system model, we present a Bayesian palaeoclimate model weighting scheme that refines the multi-model mean winter sea ice extent through fully quantitative proxy-model comparisons, accounting for model interdependence and non-stationary proxy seasonality. We demonstrate that, by adjusting the contribution of each model to the ensemble mean based on proxy evidence, model weights can eliminate biases and reduce uncertainties by 85%, to the level of interannual variability. Weighted projections using the same climate models indicate that future winter sea ice extent may be nearly 1 million km 2 lower than prior estimates across forthcoming decades and possible emissions scenarios, with broad implications for Arctic ecosystems, mid-latitude weather, and cryosphere stability.","PeriodicalId":19053,"journal":{"name":"Nature Geoscience","volume":"22 1","pages":""},"PeriodicalIF":18.3,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149209553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Progressive oxidative weathering raised sub-arc mantle fugacity on the Archaean Earth 在太古宙地球上，渐进式氧化风化作用提高了弧下地幔逸度

IF 18.3 1区地球科学

Nature Geoscience Pub Date : 2026-10-14 DOI: 10.1038/s41561-026-02119-6

Hugo Moreira,Emilie Bruand,Craig Storey,James Darling,Mike Fowler,Marine Cotte,Fleurice Parat,Lorraine Tual,Bruno Dhuime

{"title":"Progressive oxidative weathering raised sub-arc mantle fugacity on the Archaean Earth","authors":"Hugo Moreira,Emilie Bruand,Craig Storey,James Darling,Mike Fowler,Marine Cotte,Fleurice Parat,Lorraine Tual,Bruno Dhuime","doi":"10.1038/s41561-026-02119-6","DOIUrl":"https://doi.org/10.1038/s41561-026-02119-6","url":null,"abstract":"Abstract In the modern Earth, sub-arc mantle oxygen fugacity is intrinsically associated with addition of sulfur species by slab fluids. However, it is unclear to what extent recycling of volatiles controlled redox changes of the sub-arc mantle in the early Earth. Here we use sulfur K-edge micro-X-ray absorption near-edge structure spectroscopy to measure the relative abundances of S 6+ , S 4+ and S 2− in apatite inclusions hosted by geochemically characterized and dated zircons from sub-arc sanukitoid magmas that span 3.4 billion years of Earth’s geological history. The sub-arc mantle shows marked increase in oxygen fugacity between 3.4 and 3.0 billion years ago (Ga). It is substantially more oxidized than unaltered ambient upper mantle, a characteristic that cannot be explained by fractionation, degassing or intrinsic mantle processes. We propose that progressive oxidative weathering enhanced the proportion of oxidized sulfur recycled to mantle wedge sources, establishing feedback between subduction of surface materials and incrementally oxidized arc magmatism. Early subduction involving inorganic oxidation and ‘whiffs’ of oxygen between 3.4 and 2.7 Ga may have regulated an early increase in fugacity of the sub-arc mantle before the Great Oxidation Event, matching similar conditions to the modern Earth by 2.1 Ga.","PeriodicalId":19053,"journal":{"name":"Nature Geoscience","volume":"185 23 1","pages":""},"PeriodicalIF":18.3,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149209554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An abrupt shift towards a hotter and drier climate regime in the Western Eurasian Steppe 欧亚西部大草原向更热更干燥的气候状态的突然转变

IF 18.3 1区地球科学

Nature Geoscience Pub Date : 2026-10-12 DOI: 10.1038/s41561-026-02125-8

Jinling Piao,Jong-Seong Kug,Wen Chen,Mi-Kyung Sung,Shangfeng Chen,Zhikai Wang,Qingyu Cai,Danbi Lee

引用次数: 0

Sea level-induced oyster reef accretion causes minimal net carbon burial change 海平面引起的牡蛎礁增生导致最小的净碳埋藏变化

IF 18.3 1区地球科学

Nature Geoscience Pub Date : 2026-10-07 DOI: 10.1038/s41561-026-02121-y

Antonio B. Rodriguez,Justin T. Ridge,Molly C. Bost,Naomi Nice,Eve Eisemann,Yasamin Sharifi,Joshua D. Himmelstein,F. Joel Fodrie

引用次数: 0

Rethinking Agulhas Leakage impacts on Atlantic circulation 重新思考阿古拉斯泄漏对大西洋环流的影响

IF 20.6 1区地球科学

Nature Geoscience Pub Date : 2026-10-07 DOI: 10.1038/s41561-026-02111-0

Benjamin Petrick

引用次数: 0

Ice clouds born from Martian waves 火星波浪产生的冰云

IF 20.6 1区地球科学

Nature Geoscience Pub Date : 2026-10-07 DOI: 10.1038/s41561-026-02109-8

Milena Corcos

引用次数: 0

Homogeneous ice nucleation from water vapour suggested by elongated clouds on Mars 火星上细长的云暗示水蒸气形成的均匀冰核

IF 20.6 1区地球科学

Nature Geoscience Pub Date : 2026-10-07 DOI: 10.1038/s41561-026-02089-9

J. Hernández-Bernal, A. Määttänen, A. Spiga, F. Forget

{"title":"Homogeneous ice nucleation from water vapour suggested by elongated clouds on Mars","authors":"J. Hernández-Bernal, A. Määttänen, A. Spiga, F. Forget","doi":"10.1038/s41561-026-02089-9","DOIUrl":"10.1038/s41561-026-02089-9","url":null,"abstract":"It is widely accepted that water ice cloud particles below the triple point of water form by heterogeneous nucleation (with the aid of a pre-existing particle). Clouds formed from water vapour by homogeneous ice nucleation (without a pre-existing particle) have been shown to be theoretically possible for mesospheric clouds on Earth and Venus, but they have never been observed in nature, and this process is not typically considered viable under real atmospheric conditions on any planet, as it requires high levels of supersaturation. Here, we use a model of homogeneous ice nucleation from water vapour in a meteorological model of Mars and show that this successfully reproduces the unique characteristics of the Arsia Mons Elongated Cloud, a water ice cloud that occurs recurrently on Mars and that had remained difficult to reproduce in a model under conventional cloud microphysics. This finding strongly suggests that homogeneous ice nucleation from water vapour occurs on Mars, challenging some current assumptions about cloud formation processes for certain clouds on Earth and potentially on other planets. The Arsia Mons Elongated Cloud on Mars probably forms by homogeneous ice nucleation, with implications for other planets including Earth and Venus, according to a model of homogeneous ice nucleation from water vapour in a meteorological model of Mars.","PeriodicalId":19053,"journal":{"name":"Nature Geoscience","volume":"19 10","pages":"1213-1217"},"PeriodicalIF":20.6,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149090551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Transient variability in global oceanic oxygen during the Last Interglacial Period 末次间冰期全球海洋氧的瞬时变率

IF 18.3 1区地球科学

Nature Geoscience Pub Date : 2026-10-07 DOI: 10.1038/s41561-026-02120-z

Fang Qian,Yi Wang,Kassandra M. Costa,Sarah Shackleton,Sophia K. V. Hines,Ingrid L. Hendy,Sune G. Nielsen

引用次数: 0

Where in the world is whitlockite whitlockite到底在哪里

IF 20.6 1区地球科学

Nature Geoscience Pub Date : 2026-10-07 DOI: 10.1038/s41561-026-02097-9

Alix M. Ehlers, Elizabeth C. Thompson

引用次数: 0