Nature Geoscience最新文献_第9页

High-resolution imaging of a sediment core reconstructs past monsoon seasonality 沉积物岩心的高分辨率成像重建了过去的季风季节

IF 20.6 1区地球科学

Nature Geoscience Pub Date : 2026-07-14 DOI: 10.1038/s41561-026-02025-x

引用次数: 0

Reduced tropical rain-band asymmetry through the seasonal cycle 通过季节循环减少热带雨带的不对称性

IF 20.6 1区地球科学

Nature Geoscience Pub Date : 2026-07-14 DOI: 10.1038/s41561-026-02046-6

Pengcheng Zhang, Shang-Ping Xie, Nicholas J. Lutsko, Yuko M. Okumura, Da Yang, Tiffany A. Shaw

{"title":"Reduced tropical rain-band asymmetry through the seasonal cycle","authors":"Pengcheng Zhang, Shang-Ping Xie, Nicholas J. Lutsko, Yuko M. Okumura, Da Yang, Tiffany A. Shaw","doi":"10.1038/s41561-026-02046-6","DOIUrl":"10.1038/s41561-026-02046-6","url":null,"abstract":"The northward displacement of the Intertropical Convergence Zone is a defining feature of the tropical climate that global models struggle to reproduce. While often attributed to interhemispheric energy imbalance, other processes may also shape its annual-mean structure. Here we use a hierarchy of models—from a fully coupled model to simplified frameworks—to examine how seasonal insolation variations influence the symmetry of the tropical rain band. Using idealized obliquity experiments alongside observations from 1979 to 2024, we show that amplifying seasonal insolation, while preserving hemispheric symmetry in the annual mean, shifts the rain belt towards a more symmetric state. Enhanced austral-summer heating raises southern tropical sea surface temperatures above a convective threshold, triggering a transient southern rain band amplified by wind–evaporation–surface temperature feedback, while convection remains suppressed outside this season south of the Equator. This seasonally selective response thus affects the annual mean. The rain-belt position thus reflects the nonlinear integration of seasonal dynamics rather than a simple response to annual-mean forcing. Consistently, many models overestimate southeastern tropical Pacific sea surface temperature seasonality, contributing to the double rain-belt bias. Our findings highlight the need for improved representation of seasonal processes in models to better capture annual-mean rainfall patterns. A strong seasonal cycle shifts the tropical rain band towards symmetry by amplifying southern rainfall during austral summer through heating and ocean–atmosphere feedback, helping to explain persistent climate model biases, according to model simulations.","PeriodicalId":19053,"journal":{"name":"Nature Geoscience","volume":"19 9","pages":"1017-1023"},"PeriodicalIF":20.6,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148432476","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

Publisher Correction: Limited energy for microorganisms constrains carbon accrual in soil 出版者更正：微生物有限的能量限制了土壤中的碳积累

IF 20.6 1区地球科学

Nature Geoscience Pub Date : 2026-07-13 DOI: 10.1038/s41561-026-02064-4

Chaoqun Wang, Lin Xue, Peter B. Reich, Josep Peñuelas, Feng Tao, Yakov Kuzyakov

引用次数: 0

West versus Central Tibet exhumation difference influenced by Indian slab underthrusting 西藏西部与中部发掘差异受印度板块逆冲作用的影响

IF 20.6 1区地球科学

Nature Geoscience Pub Date : 2026-07-10 DOI: 10.1038/s41561-026-02043-9

Weiwei Xue, Yani Najman, Xiumian Hu, Cristina Persano, Finlay M. Stuart, Mark Wildman, Anlin Ma, Yida Yang, Gong-Jian Tang, Lin Gong, Qiang Wang

{"title":"West versus Central Tibet exhumation difference influenced by Indian slab underthrusting","authors":"Weiwei Xue, Yani Najman, Xiumian Hu, Cristina Persano, Finlay M. Stuart, Mark Wildman, Anlin Ma, Yida Yang, Gong-Jian Tang, Lin Gong, Qiang Wang","doi":"10.1038/s41561-026-02043-9","DOIUrl":"10.1038/s41561-026-02043-9","url":null,"abstract":"The Tibetan Plateau has an important role in controlling the Asian monsoon, river drainage and biodiversity patterns across Asia. The history of plateau development and its mechanistic links to underthrusting of the Indian plate beneath the Asian plate remain controversial. Here, using mid- to low-temperature thermochronological data and exhumation history modelling, we show differences in the exhumation history of Central and Western Tibet during the middle Cenozoic. Central Tibet has experienced slow exhumation from ~45 million years ago (Ma) to the present while Western Tibet underwent moderate-to-rapid exhumation between 45 and 20 Ma at a rate that exceeds the modern value by an order of magnitude. Movement on large strike-slip faults and climatic forcing can be excluded as the primary reason for the regional exhumation difference. Using bedrock cooling ages and the eruption age of (ultra)potassic lavas as proxies for early exhumation and continental underthrusting, respectively, and combining these with geophysical imaging data, we propose that the spatial differences in exhumation rates at 45–20 Ma are largely attributed to the extent of Indian continental underthrusting, with Western Tibet lying within the underthrust domain and Central Tibet lying outside it. These findings highlight continental underthrusting as a first-order control on collisional plateau development. The extent of Indian continental underthrusting beneath Western Tibet influences its moderate-to-rapid exhumation, relative to slow exhumation in Central Tibet, according to thermochronological data and exhumation history modelling.","PeriodicalId":19053,"journal":{"name":"Nature Geoscience","volume":"19 9","pages":"1115-1122"},"PeriodicalIF":20.6,"publicationDate":"2026-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148432505","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

Hydroclimate controls Congo peatland net oxygen release over the past 10,600 years 在过去的10600年里，水文气候控制着刚果泥炭地的净氧释放

IF 20.6 1区地球科学

Nature Geoscience Pub Date : 2026-07-10 DOI: 10.1038/s41561-026-02031-z

M. E. Galvez, S. Wu, Y. Garcin, E. Schefuß, G. Gassier, J. Lebamba, C. K. Kiahtipes, F. Bokomba Bwamangele, R. Kidebua Lutonadio, H.-P. Wotzka, T. Adatte, S. L. Jaccard

{"title":"Hydroclimate controls Congo peatland net oxygen release over the past 10,600 years","authors":"M. E. Galvez, S. Wu, Y. Garcin, E. Schefuß, G. Gassier, J. Lebamba, C. K. Kiahtipes, F. Bokomba Bwamangele, R. Kidebua Lutonadio, H.-P. Wotzka, T. Adatte, S. L. Jaccard","doi":"10.1038/s41561-026-02031-z","DOIUrl":"10.1038/s41561-026-02031-z","url":null,"abstract":"The burial of organic matter in marine environments is considered the dominant long-term source of atmospheric oxygen, yet the contribution of terrestrial burial remains poorly constrained. Quantifying any oxygen surplus associated with organic matter burial conventionally assumes a 1:1 oxygen-to-carbon stoichiometry. Here we aim to test this assumption and quantify net oxygen release from a terrestrial setting over time. We applied direct redox titration to a 10,600-year Congo Basin peat core, a hotspot of carbon accumulation. We find systematic deviation from the 1:1 ratio, enabling precise, time-resolved quantification of the net redox imbalance. Fluxes were strikingly nonlinear: drier phases triggered abrupt ~80% declines in net oxygen surplus within centuries, followed by rapid recovery when wetter conditions returned, revealing a hydroclimate-sensitive carbon–oxygen valve. Cumulative Holocene oxygen surplus reached 83 [68–100] petagrams of oxygen equivalents. Using the Congo oxygen-to-carbon ratio, we estimate that global peatland net oxygen production is commensurate with continental weathering oxygen sinks in the Holocene—a flux comparable in magnitude to marine burial but responding on orders-of-magnitude-shorter timescales. This finding provides qualitative insight into the contribution of terrestrial environments to Earth’s redox balance. It also offers a direct stoichiometric framework—applicable to coal archives—for quantifying that contribution across the Phanerozoic, independent of isotopic proxies, complementing existing marine-based models. The oxygen surplus from carbon burial in Congo peatlands reached 83 petagrams of net atmospheric oxygen equivalents during the Holocene, suggesting global peatlands may have offset 40–95% of continental weathering oxygen sinks, according to a peat core.","PeriodicalId":19053,"journal":{"name":"Nature Geoscience","volume":"19 8","pages":"945-950"},"PeriodicalIF":20.6,"publicationDate":"2026-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s41561-026-02031-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148432506","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

Cretaceous oceanic intraplate volcanism 白垩纪大洋板块内火山作用

IF 20.6 1区地球科学

Nature Geoscience Pub Date : 2026-07-09 DOI: 10.1038/s41561-026-02030-0

Stefan Lachowycz

引用次数: 0

Pyrochlore from fire to steel 焦绿石从火变成钢

IF 20.6 1区地球科学

Nature Geoscience Pub Date : 2026-07-09 DOI: 10.1038/s41561-026-02021-1

Quentin Bollaert, Felipe Velásquez-Ruiz, Changhong Wang

引用次数: 0

Emerging insights on oceanic intraplate volcanism 对海洋板内火山作用的新认识

IF 20.6 1区地球科学

Nature Geoscience Pub Date : 2026-07-09 DOI: 10.1038/s41561-026-02051-9

引用次数: 0

Author Correction: Ocean iron fertilization from enhanced mid-ocean-ridge volcanism due to ice-age sea-level falls 作者更正：由于冰河时代海平面下降，海洋中脊火山活动增强了海洋铁的施肥作用

IF 20.6 1区地球科学

Nature Geoscience Pub Date : 2026-07-07 DOI: 10.1038/s41561-026-02063-5

Tianshu Kong, Xiaozhou Ruan, Jesse R. Farmer, Haojia Abby Ren, Thomas C. Lee, Ting-Hsuan Lin, Daniel M. Sigman, Yi Ming, Xingchen Tony Wang

引用次数: 0

Limited energy for microorganisms constrains carbon accrual in soil 微生物有限的能量限制了土壤中碳的积累

IF 20.6 1区地球科学

Nature Geoscience Pub Date : 2026-07-06 DOI: 10.1038/s41561-026-02035-9

Chaoqun Wang, Lin Xue, Peter B. Reich, Josep Peñuelas, Feng Tao, Yakov Kuzyakov

{"title":"Limited energy for microorganisms constrains carbon accrual in soil","authors":"Chaoqun Wang, Lin Xue, Peter B. Reich, Josep Peñuelas, Feng Tao, Yakov Kuzyakov","doi":"10.1038/s41561-026-02035-9","DOIUrl":"10.1038/s41561-026-02035-9","url":null,"abstract":"Although most soil microorganisms exist in a dormant state, the extent, causes and implications of this dormancy for global soil carbon cycling and accrual remain uncertain. An emerging paradigm suggests that energy limitation is the dominant factor causing microbial dormancy in soils, constraining microbial growth and turnover, necromass formation and carbon accrual. Here we applied scaling laws linking microbial energy utilization to biomass growth and maintenance, providing a framework to quantify coupled carbon–energy fluxes. By integrating a microbial-process explicit model, global-scale datasets and deep learning, we estimated that microorganisms can obtain 37 ± 22 MJ m−2 yr−1 of energy by oxidizing available organic carbon in topsoil (0–30 cm). This energy amount can support at most 8 ± 6% of the total microorganisms under a growth state or 61 ± 57% under a maintenance state, leaving at least two-fifths of the microorganisms in dormancy. Despite variations in land use and climate, the global mean microbial energy use efficiency (0.22 ± 0.02) is 17% lower than carbon use efficiency (0.27 ± 0.04). These findings reveal a ubiquitous rule of energy limitation for microbial activity and consequently for necromass production—the main source of soil organic carbon accrual. The amount of energy that soil microbes can obtain from oxidizing available organic carbon is limited, which keeps many of them dormant and restricts their growth, necromass production and ultimately the accrual of soil carbon, according to analyses of soil carbon and energy fluxes.","PeriodicalId":19053,"journal":{"name":"Nature Geoscience","volume":"19 9","pages":"1064-1071"},"PeriodicalIF":20.6,"publicationDate":"2026-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148409206","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