Quaternary Science Reviews最新文献

{"title":"The evolution and drivers of changes in Tibetan terrestrial ecosystems over the last millennium","authors":"Pengchao Zhang ,&nbsp;Tao Wang ,&nbsp;Yueheng Jin ,&nbsp;Dan Liu","doi":"10.1016/j.quascirev.2026.109839","DOIUrl":"10.1016/j.quascirev.2026.109839","url":null,"abstract":"<div><div>Since the Industrial Revolution, global climate change has shifted from being primarily driven by natural forces to being significantly influenced by both natural forces and human activities, leading to marked climatic changes on the Tibetan Plateau. However, the responses of the plateau’s ecosystems to climate change, influenced by shifting underlying drivers, remain unclear. In this study, we examined the change characteristics, climatic drivers, and potential risks of destabilization for the Tibetan Plateau’s permafrost, forest cover, and carbon stocks from a millennial perspective (850–2020 CE), utilizing the dynamic global vegetation model, the Community Land Model version 4.5. Compared to the relative stability from pre-1850, the post-1950 period witnessed a significant change in permafrost area, forest cover, and vegetation carbon stock, with changes of −21 %, +40 %, and +14 %, respectively, compared to pre-1850 levels. Temperature and longwave radiation significantly contributed to the noticeable decline in permafrost area, while temperature, precipitation, and CO₂ notably promoted vegetation growth. Moreover, permafrost had exhibited early-warning signals that it was approaching critical thresholds. Our findings underscore that the Tibetan Plateau has undergone drastic changes since 1950, with permafrost already reaching tipping points, which is crucial for enhancing the ecological security of the plateau and its surrounding regions.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"376 ","pages":"Article 109839"},"PeriodicalIF":3.3,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080569","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}

{"title":"Cyanobacteria and aquatic ecosystem dynamics across 28,000 years of environmental changes in subtropical North America","authors":"Savvas Paradeisis-Stathis ,&nbsp;Matthew N. Waters ,&nbsp;Debra A. Willard ,&nbsp;Richard S. Vachula","doi":"10.1016/j.quascirev.2026.109842","DOIUrl":"10.1016/j.quascirev.2026.109842","url":null,"abstract":"<div><div>Ecological pressures on aquatic ecosystems have increased over recent centuries due to human activities and climate change. However, contextualizing ecosystem deterioration is often challenging due to limited knowledge of environmental changes over millennial timescales. Subtropical Carolina bays in North Carolina, USA, have remained unglaciated, preserving paleolimnological records that extend back to the last glacial period. Here, we analyzed a sediment core from the ecologically rich Lake Waccamaw spanning more than 28,000 years for aquatic proxies of nutrients, photosynthetic pigments, cyanotoxins, carbon isotopes, and terrestrial proxies of pollen and charcoal. The study explored paleolimnological changes in the aquatic environment connected to land changes and climate during the late Quaternary in the southeastern Atlantic Coastal Plain. Results reveal that while current levels of colonial cyanobacteria are high, past levels of cyanobacteria, other primary producers, and cyanotoxins were higher under natural climate variability. Abrupt ecosystem responses to increasing trophic conditions during Interstadial 3 (27.8–26.4 cal ka BP) and the early Holocene (11.4–7 cal ka BP) were marked by increases in primary producer abundance, deciduous vegetation expansion, and fire activity. Cyanobacteria remained dominant throughout the record, with colonial forms prevailing during the Holocene. Increases in pigment concentrations aligned with <em>Quercus</em> and were primarily driven by hydroclimatic variability and nutrient stoichiometry. Transitions between <em>Pinus</em> and <em>Quercus</em> pollen matched stadials and interstadials in the δ¹⁸Ο record from the North Greenland Ice Core Project (NGRIP). This study highlights the value of multi-proxy millennial-scale paleolimnological records for understanding aquatic ecosystem responses to climate conditions during the late Pleistocene.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"376 ","pages":"Article 109842"},"PeriodicalIF":3.3,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080488","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}

{"title":"Latest Quaternary landscape change and its influence on human activities in the Bodui Zangbo River valley, southeastern Tibet","authors":"Jinming Xie ,&nbsp;Gang Hu ,&nbsp;Liubing Xu ,&nbsp;Shangzhe Zhou ,&nbsp;Yanren Wang ,&nbsp;Tinley Tsring ,&nbsp;Huiying Wang ,&nbsp;Ping Wang ,&nbsp;Xiaoyan Yang","doi":"10.1016/j.quascirev.2026.109809","DOIUrl":"10.1016/j.quascirev.2026.109809","url":null,"abstract":"<div><div>Archaeological evidence shows that high-elevation, deeply incised valleys of the southeastern Tibetan Plateau, despite geomorphic hazards and limited arable land, have supported widespread permanent human occupation since the Neolithic period, largely facilitated by the development of agriculture. To examine this adaptation, we reconstructed the latest Quaternary landscape evolution around the La phob archaeological site, the earliest known Neolithic settlement in Tibet (∼4800 cal BP), using OSL and ¹⁴C dating of fluvial, alluvial, and dammed-lake sediments. The site is situated on a debris-flow-dominated alluvial fan in the Bodui Zangbo River valley, southeastern Tibet. Our results reveal valley aggradation during the Last Glacial Maximum and last deglaciation, followed by incision and the formation of multi-level fill and cut-in-fill terraces in the early Holocene. At ∼4.8 ka, a debris-flow dam created a ∼11 km² paleolake that persisted until ∼1.2 ka, depositing thick lacustrine sediments over pre-existing terraces. The paleolake would have provided a stable water source, and settlement and agriculture emerged adjacent to it. We propose that the site's location on an alluvial fan benefited from episodic debris flows that supplied fine-grained, fertile sediments suitable for cultivation, despite geomorphic instability. After dam collapse, populations likely migrated to lacustrine sediment-covered terraces, where fertile soils sustained continued agriculture. Integrated with regional evidence, our findings indicate that recurrent river-blocking events promoted valley widening through cycles of aggradation and incision. These geomorphic processes enhanced habitable and agricultural land availability and played a key role in shaping prehistoric settlement patterns and adaptive subsistence strategies on the Tibetan Plateau.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"376 ","pages":"Article 109809"},"PeriodicalIF":3.3,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146039919","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}

{"title":"Precipitation dominates remote lake primary productivity: A Holocene perspective based on regional synthesis from northeastern Asia","authors":"Dongliang Ning ,&nbsp;Xianqiang Meng ,&nbsp;Qi Lin ,&nbsp;Enfeng Liu ,&nbsp;Zhenyu Ni ,&nbsp;Weiwei Sun ,&nbsp;Wenfang Zhang ,&nbsp;Yao Wang ,&nbsp;Rong Chen ,&nbsp;Enlou Zhang","doi":"10.1016/j.quascirev.2026.109820","DOIUrl":"10.1016/j.quascirev.2026.109820","url":null,"abstract":"<div><div>Climate change-induced algal blooms are increasingly threatening water resources in global temperate regions. However, the mechanisms underlying multi-forcing interaction remain controversial, largely due to the scarcity of reliable algal productivity proxies and a long-term perspective. Here, we quantified algae-sourced sediment organic matter as an indicator of lake primary productivity using Fourier Transform Infrared Spectroscopy (FTIR). A significant absorbance band around 1550 cm⁻¹ in lake algae but absence in aquatic macrophyte and terrestrial plants guarantees the reliability of FTIR to separate the algal signal in lake sediments. On this basis, we reconstructed the Holocene trajectory of algal productivity in a remote crater lake, northeast China, and synthesized the regional Holocene algal productivity using Generalized Additive Models (GAM). The results indicated relatively high primary productivity during the mid-Holocene as well as some early and late episodes. Those periods of high productivity were synchronous with the changing pattern of regional precipitation. Our multivariate statistical modeling further revealed the dominant role of precipitation and the additive effects of temperature and dust deposition, underscoring the impact of precipitation-driven nutrient dynamics in stimulating algal blooms in a warming world.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"376 ","pages":"Article 109820"},"PeriodicalIF":3.3,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146039885","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}

{"title":"New evidence for a 179 ka age of the Old Crow tephra","authors":"Desmond Yeo ,&nbsp;Yongsong Huang ,&nbsp;Fei Guo ,&nbsp;Richard S. Vachula ,&nbsp;Karen J. Wang ,&nbsp;Jonathan A. O'Donnell ,&nbsp;Steven C. Clemens ,&nbsp;James M. Russell","doi":"10.1016/j.quascirev.2026.109816","DOIUrl":"10.1016/j.quascirev.2026.109816","url":null,"abstract":"<div><div>Accurate age control is a prerequisite for paleoclimate and paleoenvironmental research but remains a persistent challenge for Arctic lake sediment cores. Well-dated regional tephrochronologies can provide robust stratigraphic markers in sediments. In Arctic Eastern Beringia, the Old Crow tephra (OCt) is one of the most widely distributed late Quaternary tephras and serves as an important stratigraphic anchor beyond the radiocarbon range (&gt;50 ka BP). However, the age of the OCt remains debated and has undergone numerous revisions, with studies using different dating methodologies to ascribe ages ranging from 124 ka to 203 ka. While the commonly reported age of the OCt based on fission track dating is 124 ± 10 ka, a recent study using uranium-thorium/helium ((U-Th)/He) dating of zircon placed the OCt at 202.9 ± 9.5 ka. Here, we independently find an age of 179.0 ± 4.6 ka for the OCt from a lacustrine sediment record in Alaska (Imuruk Lake) with confirmation using the marine benthic δ¹⁸O chronology. This revises the current tephrostratigraphic framework in this region. We also report a previously undocumented mafic tephra layer (IM#1), which is likely a local eruption on the Seward Peninsula, with an age of 157.2 ± 4.7 ka, providing a new tephrostratigraphic marker for this region.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"376 ","pages":"Article 109816"},"PeriodicalIF":3.3,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080570","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}

{"title":"From Neanderthals to Homo sapiens: New palaeoecological and tephrocronological data from the MIS3 layers of Grotta-Riparo di Uluzzo C (Apulia, southern Italy)","authors":"Juan Ochando ,&nbsp;Donatella Magri ,&nbsp;Biagio Giaccio ,&nbsp;Giovanni Zanchetta ,&nbsp;Antonino Vazzana ,&nbsp;Omry Barzilai ,&nbsp;Francesco Berna ,&nbsp;Gruppo Speleologico Neretino ,&nbsp;Giulia Marciani ,&nbsp;Andrea Zerboni ,&nbsp;Sara Silvestrini ,&nbsp;Enza E. Spinapolice ,&nbsp;Adriana Moroni ,&nbsp;Gabriele Terlato ,&nbsp;Matteo Romandini ,&nbsp;Stefano Benazzi","doi":"10.1016/j.quascirev.2026.109830","DOIUrl":"10.1016/j.quascirev.2026.109830","url":null,"abstract":"<div><div>The southern Italian Peninsula plays a crucial role as a biogeographical hotspot in Southern Europe, influenced significantly by the Mediterranean climate. This environment acted as a glacial refuge for diverse flora and fauna, humans included. This study employs pollen analysis on Mousterian and Uluzzian sediments from Grotta-Riparo di Uluzzo C in the Salento Peninsula (southern Italy) to reconstruct the vegetation landscapes encountered by the late Italian Neanderthals (thus far associated with the Mousterian) and early modern humans (linked to the Uluzzian) during the mid Marine Isotope Stage (MIS) 3. Our palynological analyses reveal a distinctive and diverse environment within the Mediterranean landscape. Tephrochronological and OSL constraints and paleoenvironmental variability consistently allow us to date the investigated interval between ∼46.6 ka and 43.4 ka, encompassing the second part of the long Greenland interstadial 12 (GI-12) and the onset of the GI-11. Over these three millennia, the environment in the area of Uluzzo C is characterized by a rich flora mainly composed of evergreen elements. Additionally, heliophytes such as Amaranthaceae, <em>Artemisia</em>, and Poaceae are observed. The consistent presence of pollen taxa such as <em>Juglans</em>, and <em>Pinus halepensis/pinea</em>, among others, highlights the importance of this coastal area of Apulia for the long-term persistence of Mediterranean species during the Late Pleistocene. These taxa could be supported by a generally mild climate, as suggested by the occurrence of <em>Olea</em>, <em>Myrtus</em>, and <em>Cistus</em>. These diverse environments would undeniably have offered various opportunities for the survival of Neanderthals and early Upper Palaeolithic hominins, especially during the warm phases and, critically, the cold events of the Late Pleistocene. Our integrated approach underscores the importance of Grotta-Riparo di Uluzzo C as a MIS 3 archive, contributing to the ongoing debate on the spatial extent of glacial refugia. Our data from Uluzzo C corroborate the previous idea that the climatic and environmental setting were not the main reason for Neanderthals' abandonment of Uluzzo Bay and potentially southern Italy around 45,000 years ago.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"376 ","pages":"Article 109830"},"PeriodicalIF":3.3,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146039887","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}

{"title":"Ages of different shell species associated to vermetid bioconstructions remains and their implications on Mid-to Late-Holocene Brazilian sea-level curves","authors":"Rodolfo José Angulo ,&nbsp;Paulo César Fonseca Giannini ,&nbsp;Maria Cristina de Souza ,&nbsp;Augusto Luiz Ferreira Junior ,&nbsp;Thiago de Freitas Toniolo ,&nbsp;Jesús Alberto Salas Rangel ,&nbsp;Ed Garrett","doi":"10.1016/j.quascirev.2025.109788","DOIUrl":"10.1016/j.quascirev.2025.109788","url":null,"abstract":"<div><div>Vermetid bioconstructions have been widely used as Holocene paleo-sea level indicators along the Brazilian coast, due to their abundance and accuracy, especially in the case of <em>Petaloconchus varians</em> (d’Orbigny, 1841). Most age determinations for this species have been performed using conventional ¹⁴C dating of bulk bioconstruction samples. However, this type of sample may contain several types of carbonate or carbonaceous impurities, including remains of other organisms such as mollusks and barnacles, which can affect the reliability of the age. This work compares previous conventional ¹⁴C ages of vermetid bioconstruction bulk samples with ¹⁴C AMS ages of shells from different species dated individually. The objectives are: i. To establish the relationship among the ages of different species in order to reveal the direction or tendency of past sea-level changes; ii. To evaluate the error in dating bulk samples; iii. To analyze the reliability of the ages obtained from each species, based on aspects such as purity, alteration and neomorphism. The dating results obtained for fossil shells of different species were in agreement with the relative ages expected based on the observed spatial relationship between them. <em>Tetraclita stalactifera</em> parietal plates were older than overgrowing vermetids shells, and shells of the bivalve <em>Leiosolenus</em> aff. <em>bisulcatus</em> in life position, which perforate the bioconstruction, were younger. The ages of individual shells were older than those obtained by dating bulk vermetid bioconstructions, and this difference increased with the age. Taking the paleolevels previously determined for the studied samples and using the revised ages reported here, we infer that relative sea level in southern Brazil was more than 2 m above present between 6000 and 7000 cal aBP. The differences in ages between bulk and individual shell samples highlight that paleo-sea levels inferred from bulk vermetid remains and respective Holocene sea-level curves need revision. More data for separate species are therefore necessary to improve the accuracy of Holocene sea-level curves from Brazil. Furthermore, methodological care must be taken to avoid the influence of micritic envelopes, bioturbation, biofouling, and cement infill on the age.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"375 ","pages":"Article 109788"},"PeriodicalIF":3.3,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145940298","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}

{"title":"Last interglacial relative sea-level changes at Myrtle Beach, South Carolina","authors":"S. Dean ,&nbsp;N. Georgiou ,&nbsp;R. Poirier ,&nbsp;W.R. Doar III ,&nbsp;D. Brill ,&nbsp;D. Chauveau ,&nbsp;C. Cerrone ,&nbsp;J. Austermann ,&nbsp;A. Rovere","doi":"10.1016/j.quascirev.2025.109769","DOIUrl":"10.1016/j.quascirev.2025.109769","url":null,"abstract":"<div><div>The peak of the Last Interglacial (Marine Isotope Stage 5e; ∼128–117 ky) provides a valuable analogue for understanding sea level rise under future warming scenarios. Relative sea-level (RSL) indicators from passive margins are essential for constraining past sea levels and refining glacio-hydro-isostatic adjustment (GIA) models, thereby enhancing projections of future sea-level change and associated regional impacts. In this study, we present new luminescence ages from 17 sediment samples in outcrops along the Intracoastal Waterway near Myrtle Beach, South Carolina (USA). The sampling sites lie between a series of paleo beach ridges preserved as successive off-lapping deposits, the scarp toes of which have been previously identified as indicators of the maximum sea level during each associated sea-level highstand. Our results include ages corresponding with Marine Isotope Stages (MIS) 7 (∼200 ka), 5e (∼125 ka), 5c (∼105 ka), and the last deglacial period (∼14–12 ky). These new sea-level indicators, supplemented by the existing scarp elevation data, suggest that relative sea level in this region reached similar levels during MIS 5e and MIS 5c/5a. Comparison with GIA model outputs shows that more models fit our observations (from all time periods) when a peak GMSL of less than 5 m above present during MIS 5e is assumed, which makes those scenarios more likely.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"375 ","pages":"Article 109769"},"PeriodicalIF":3.3,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145978996","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}

{"title":"Holocene relative sea-level changes in the middle part of the Polish coast, southern Baltic Sea","authors":"Paweł Sydor","doi":"10.1016/j.quascirev.2025.109785","DOIUrl":"10.1016/j.quascirev.2025.109785","url":null,"abstract":"<div><div>The problem of relative sea-level (RSL) changes is one of the main issues in Baltic Sea research. The aim of the study is to reconstruct Holocene RSL changes in the middle part of the Polish coast. To develop the RSL curve for the study area, 290 RSL data points were used. From these, 184 data points (32.7 %) are terrestrial limiting points (TLP), and 106 data points (18.8 %) are marine limiting points (MLP). The data allow for reconstructing water-level changes for the last 10.5 ka b2k, i.e., for the stages of Ancylus Lake and Littorina Sea, starting from an elevation of ca. 28 m below present sea level (b.s.l.).</div><div>In the period 10.5–10.2 ky b2k, a fast water level rise (Ancylus transgression) occurred with an average rate of ca. 30 mm/yr. About 10.2 ky b2k, the water level reached ca. 19 m b.s.l. The formation of a drainage channel in the area of the present Belt Sea resulted in a regression of the water level of Ancylus Lake to 24 m b.s.l., with an average rate of ca. 12.5 mm/yr, in the period 10.2–9.8 ky b2k. After the connection of the Baltic with the ocean 9.8 ky b2k, during the period 9.8–8.0 ky b2k, a fast sea level rise (Littorina transgression) occurred in the study area. An average rate of water level rise during the Littorina transgression was ca. 9.4 mm/yr. The period 8.0–6.0 ky b2k is characterized by gradual decrease of the rate of sea level rise. Between 8.0 and 7.0 ky b2k sea level rose with average rate ca. 3 mm/yr, and ca. 1 mm/yr between 7.0 and 6.0 ky b2k. Over the last 6.0 ky, the rate of sea-level rise has been slower, and it was ca. 0.5 mm/yr. Taking into account similarities to other regions of the Baltic Sea and the world ocean, it can be concluded that sea-level changes in the study area in the last 9.8 ky have been eustatic in nature.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"375 ","pages":"Article 109785"},"PeriodicalIF":3.3,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145978950","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}

{"title":"Bipolar volcanic ice-core synchronization of the entire last glacial period","authors":"Anders Svensson ,&nbsp;Guido Vettoretti ,&nbsp;Jia-mei Lin ,&nbsp;Giulia Sinnl ,&nbsp;Dorthe Dahl-Jensen ,&nbsp;Jørgen Peder Steffensen ,&nbsp;Sune Olander Rasmussen ,&nbsp;Bo Vinther ,&nbsp;Christine Hvidberg ,&nbsp;Helle Astrid Kjær ,&nbsp;Vasileios Gkinis ,&nbsp;Eliza Cook ,&nbsp;Johannes Lohmann ,&nbsp;Jonathan Ortved Melcher ,&nbsp;Sune Halkjær ,&nbsp;Sepp Kipfstuhl ,&nbsp;Frank Wilhelms ,&nbsp;Florian Adolphi ,&nbsp;Hubertus Fischer ,&nbsp;Matthias Bigler ,&nbsp;Raimund Muscheler","doi":"10.1016/j.quascirev.2025.109755","DOIUrl":"10.1016/j.quascirev.2025.109755","url":null,"abstract":"<div><div>Precise synchronization of paleoclimate records is essential for inferring the dynamics and past evolution of the climate system. For the last glacial period, the time scales of ice cores from the Greenland and Antarctic ice sheets have been synchronized by the use of cosmogenic radionuclides, atmospheric gas concentrations, and traces of large volcanic eruptions. Here we identify the sulfate deposition signatures of the same 300 volcanic eruptions in different Greenland and Antarctic ice cores to obtain an inter-hemispheric volcanic ice-core synchronization of the entire last glacial period and the early Holocene (10–110 ka). Compared to earlier bipolar volcanic synchronizations, we close a gap in the period 16.5–24.5 ka and extend the synchronization to cover the 10–12 ka and 60–110 ka intervals. Furthermore, we increase the density of bipolar match points and make updates and corrections of the existing bipolar and unipolar synchronizations. The volcanic synchronization is in agreement with existing bipolar synchronizations from independent ¹⁰Be and methane matching. The bipolar volcanic synchronization allows us to determine the precise phasing of interhemispheric abrupt climate events throughout the last glacial period, particularly those associated with Dansgaard-Oeschger (D-O) events. Our improved synchronization and extended time period allow us to show that at the time of the D-O warming transitions, the average Antarctic temperature reaches a maximum within decades after the Greenland temperature maximum. This rapid Antarctic warming is superimposed on the well-known millennial-scale thermal bipolar-seesaw warming in Antarctica commonly attributed to oceanic heat transport and confirms earlier work that the abrupt change observed in Greenland is associated with a direct atmospheric circulation change at a global scale. The exception to this pattern occurs for the EDML ice-coring site located in the Atlantic sector of Antarctica, potentially related to sea-ice conditions in the Weddell Sea. Comparison to state-of-the-art climate model simulations shows excellent agreement in the overall bipolar climate phasing at the warming transitions and allows for analysis of the climate-system behavior at those transitions. The model simulations suggest that the abrupt Antarctic warming response observed is connected with an interhemispheric atmospheric response involving a global scale reorganization of the zonal mean atmospheric circulation. The abrupt D-O surface warming signal in the Northern Hemisphere is teleconnected into an abrupt Antarctic surface warming through changes in the Southern Hemisphere eddy-driven jet and anomalous circulation changes in the associated Ferrel and Polar cells.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"375 ","pages":"Article 109755"},"PeriodicalIF":3.3,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145940356","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}