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Ro S, Park J, Yoo H, Han C, Lee A, Lee Y, Kim M, Han Y, Svensson A, Shin J, Ro CU, Hong S. Millennial-scale variability of Greenland dust provenance during the last glacial maximum as determined by single particle analysis. Sci Rep 2024; 14:2040. [PMID: 38263283 PMCID: PMC10805741 DOI: 10.1038/s41598-024-52546-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 01/19/2024] [Indexed: 01/25/2024] Open
Abstract
Greenland ice core records exhibited 100-fold higher dust concentrations during the Last Glacial Maximum (LGM) than during the Holocene, and dust input temporal variability corresponded to different climate states in the LGM. While East Asian deserts, the Sahara, and European loess have been suggested as the potential source areas (PSAs) for Greenland LGM dust, millennial-scale variability in their relative contributions within the LGM remains poorly constrained. Here, we present the morphological, mineralogical, and geochemical characteristics of insoluble microparticles to constrain the provenance of dust in Greenland NEEM ice core samples covering cold Greenland Stadials (GS)-2.1a to GS-3 (~ 14.7 to 27.1 kyr ago) in the LGM. The analysis was conducted on individual particles in microdroplet samples by scanning electron microscopy with energy dispersive X-ray spectroscopy and Raman microspectroscopy. We found that the kaolinite-to-chlorite (K/C) ratios and chemical index of alteration (CIA) values were substantially higher (K/C: 1.4 ± 0.7, CIA: 74.7 ± 2.9) during GS-2.1a to 2.1c than during GS-3 (K/C: 0.5 ± 0.1, CIA: 65.8 ± 2.8). Our records revealed a significant increase in Saharan dust contributions from GS-2.1a to GS-2.1c and that the Gobi Desert and/or European loess were potential source(s) during GS-3. This conclusion is further supported by distinctly different carbon contents in particles corresponding to GS-2.1 and GS-3. These results are consistent with previous estimates of proportional dust source contributions obtained using a mixing model based on Pb and Sr isotopic compositions in NEEM LGM ice and indicate millennial-scale changes in Greenland dust provenance that are probably linked to large-scale atmospheric circulation variabilities during the LGM.
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Affiliation(s)
- Seokhyun Ro
- Department of Ocean Sciences, Inha University, 100 Inha-ro, Michuhol-gu, Incheon, 22212, Republic of Korea
- Division of Glacial Environment Research, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon, 21990, Republic of Korea
| | - Jonghyeon Park
- Department of Chemistry, Inha University, 100 Inha-ro, Michuhol-gu, Incheon, 22212, Republic of Korea
- Marine Environment Research Department, Ara Consulting and Technology, 30 Songdomirae-ro, Yeonsu-gu, Incheon, 21990, Republic of Korea
| | - Hanjin Yoo
- Department of Chemistry, Inha University, 100 Inha-ro, Michuhol-gu, Incheon, 22212, Republic of Korea
- Particle Pollution Research and Management Center, Inha University, 36 Gaetbeol-ro, Yeonsu-gu, Incheon, 21999, Republic of Korea
| | - Changhee Han
- Department of Water Environmental Safety Management, Korea Water Resources Corporation, 200 Sintanjin-ro, Daedeok-gu, Daejeon, 34350, Republic of Korea
| | - Ahhyung Lee
- Department of Ocean Sciences, Inha University, 100 Inha-ro, Michuhol-gu, Incheon, 22212, Republic of Korea
- Unit of Frontier Exploration, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon, 21990, Republic of Korea
| | - Yoojin Lee
- Department of Chemistry, Inha University, 100 Inha-ro, Michuhol-gu, Incheon, 22212, Republic of Korea
| | - Minjeong Kim
- Division of Glacial Environment Research, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon, 21990, Republic of Korea
- Department of Chemistry, Inha University, 100 Inha-ro, Michuhol-gu, Incheon, 22212, Republic of Korea
| | - Yeongcheol Han
- Division of Glacial Environment Research, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon, 21990, Republic of Korea
| | - Anders Svensson
- Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Julian 10 Maries Vej 30, 2100, Copenhagen, Denmark
| | - Jinhwa Shin
- Division of Glacial Environment Research, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon, 21990, Republic of Korea
| | - Chul-Un Ro
- Department of Chemistry, Inha University, 100 Inha-ro, Michuhol-gu, Incheon, 22212, Republic of Korea.
- Particle Pollution Research and Management Center, Inha University, 36 Gaetbeol-ro, Yeonsu-gu, Incheon, 21999, Republic of Korea.
| | - Sungmin Hong
- Department of Ocean Sciences, Inha University, 100 Inha-ro, Michuhol-gu, Incheon, 22212, Republic of Korea.
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2
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Moreno J, Ramos AM, Raposeiro PM, Santos RN, Rodrigues T, Naughton F, Moreno F, Trigo RM, Ibañez-Insa J, Ludwig P, Shi X, Hernández A. Identifying imprints of externally derived dust and halogens in the sedimentary record of an Iberian alpine lake for the past ∼13,500 years - Lake Peixão, Serra da Estrela (Central Portugal). THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 903:166179. [PMID: 37572895 DOI: 10.1016/j.scitotenv.2023.166179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 08/04/2023] [Accepted: 08/07/2023] [Indexed: 08/14/2023]
Abstract
Iberian lacustrine sediments are a valuable archive to document environmental changes since the last glacial termination, seen as key for anticipating future climate/environmental changes and their far-reaching implications for generations to come. Herein, multi-proxy-based indicators of a mountain lake record from Serra da Estrela were used to reconstruct atmospheric (in)fluxes and associated climatic/environmental changes over the last ∼13.5 ka. Depositions of long-range transported dust (likely from the Sahara) and halogens (primarily derived from seawater) were higher for the pre-Holocene, particularly in the late Bølling-Allerød-Younger Dryas period, compared to the Holocene. This synchronous increase could be related to a recognized dust-laden atmosphere, along with the combined effect of (i) an earlier proposed effective transport of Sahara dust for higher latitudes during cold periods and (ii) the progressive Polar Front expansion southwards, with the amplification of halogen activation reactions in lower latitudes due to greater closeness to snow/sea ice (halide-laden) surfaces. Additionally, the orographic blocking of Serra da Estrela may have played a critical role in increasing precipitation of Atlantic origin at higher altitudes, with the presence of snow prompting physical and chemical processes involving halogen species. In the Late Holocene, the dust proxy records highlighted two periods of enhanced input to Lake Peixão, the first (∼3.5-2.7 ka BP) after the end of the last African Humid Period and the second, from the 19th century onwards, agreeing with the advent of commercial agriculture, and human contribution to land degradation and dust emission in the Sahara/Sahel region. The oceanic imprints throughout the Holocene matched well with North Atlantic rapid climatic changes that, in turn, coincided with ice-rafted debris or Bond events and other records of increased storminess for the European coasts. Positive parallel peaks in halogens were found in recent times, probably connected to fire extinction by halogenated alkanes and roadway de-icing.
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Affiliation(s)
- J Moreno
- Universidade de Lisboa, Faculdade de Ciências, Instituto Dom Luiz, 1749-016 Lisboa, Portugal.
| | - A M Ramos
- Universidade de Lisboa, Faculdade de Ciências, Instituto Dom Luiz, 1749-016 Lisboa, Portugal; Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - P M Raposeiro
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Pólo dos Açores, Rua da Mãe de Deus, 9500-321 Ponta Delgada, Portugal; Faculdade de Ciências e Tecnologia, Universidade dos Açores, Rua da Mãe de Deus, 9500-321 Ponta Delgada, Portugal
| | - R N Santos
- Instituto Português do Mar e da Atmosfera (IPMA), Rua C do Aeroporto, 1749-077 Lisboa, Portugal
| | - T Rodrigues
- Instituto Português do Mar e da Atmosfera (IPMA), Rua C do Aeroporto, 1749-077 Lisboa, Portugal; Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Estrada da Penha, 8005-139 Faro, Portugal
| | - F Naughton
- Instituto Português do Mar e da Atmosfera (IPMA), Rua C do Aeroporto, 1749-077 Lisboa, Portugal; Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Estrada da Penha, 8005-139 Faro, Portugal
| | - F Moreno
- Independent Researcher, Caminho da Portela, n. ° 97, Cascalha, 4940-061 Bico PCR, Portugal
| | - R M Trigo
- Universidade de Lisboa, Faculdade de Ciências, Instituto Dom Luiz, 1749-016 Lisboa, Portugal; Departamento de Meteorologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-919, Brazil
| | - J Ibañez-Insa
- Geosciences Barcelona (GEO3BCN-CSIC), Lluís Solé i Sabarís s/n, E-08028 Barcelona, Spain
| | - P Ludwig
- Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - X Shi
- Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, Bremerhaven, Germany; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), China
| | - A Hernández
- Universidade da Coruña, GRICA Group, Centro Interdisciplinar de Química e Bioloxía (CICA), Rúa As Carballeiras, 15071 A Coruña, Spain
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3
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Lee S, Lee K, Han C, Han Y, Hong SB, Hur SD, Lee S, Chang C, Jung H, Moon J, Boutron CF, Hong S. Recent decline in atmospheric Pb deposition and isotopic constraints on changes in source contributions in snow from northwestern Greenland. CHEMOSPHERE 2023; 345:140441. [PMID: 37844697 DOI: 10.1016/j.chemosphere.2023.140441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 10/11/2023] [Accepted: 10/12/2023] [Indexed: 10/18/2023]
Abstract
We present lead (Pb) concentrations and isotope ratios in a continuous series of 38 snow samples from a 1.9-m snow pit, covering the period from winter 2012 to summer 2017, at the East Greenland Ice-core Project (EGRIP) ice core drill site in northwestern Greenland. Pb concentrations were highly variable, ranging from 1.53 to 94.9 pg g-1 (mean value of 10.6 pg g-1), with higher concentrations during winter and spring and lower concentrations during summer and fall. Our results show a substantial reduction in the Pb concentration of ∼50% between the 2000s and 2010s, reaching a level close to that observed in the mid-18th century, that is, the time of the Industrial Revolution. Remarkably low radiogenic Pb isotope compositions were observed in our samples compared to previously reported values during the 2000s. The Pb isotope mixing model results indicated a decreasing Chinese contribution from the 2000s onwards, while Europe/Russia emerged as a relatively more important contributor to the anthropogenic Pb input to central Greenland during the corresponding period. Thus, we hypothesized that the reduction in Pb pollution in central Greenland is largely due to a decreasing contribution from Chinese sources in response to the effectiveness of stringent emission control measures in China.
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Affiliation(s)
- Sanghee Lee
- Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon, 21990, Republic of Korea
| | - Khanghyun Lee
- Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon, 21990, Republic of Korea
| | - Changhee Han
- Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon, 21990, Republic of Korea; Water Environmental Safety Management Department, Korea Water Resource Corporation, 200 Sintanjin-Ro, Daedeok-Gu, Daejeon, 34350, Republic of Korea
| | - Yeongcheol Han
- Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon, 21990, Republic of Korea
| | - Sang-Bum Hong
- Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon, 21990, Republic of Korea
| | - Soon Do Hur
- Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon, 21990, Republic of Korea
| | - Seungmi Lee
- Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon, 21990, Republic of Korea
| | - Chaewon Chang
- Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon, 21990, Republic of Korea
| | - Hyejin Jung
- Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon, 21990, Republic of Korea
| | - Jangil Moon
- Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon, 21990, Republic of Korea
| | - Claude F Boutron
- Institut des Géosciences de l'Environnement, Université Grenoble Alpes/CNRS, 54 rue Molière, 38400, Saint Martin d'Hères, France
| | - Sungmin Hong
- Department of Ocean Sciences, Inha University, 100 Inha-ro, Michuhol-gu, Incheon, 22212, Republic of Korea.
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Újvári G, Klötzli U, Stevens T, Svensson A, Ludwig P, Vennemann T, Gier S, Horschinegg M, Palcsu L, Hippler D, Kovács J, Di Biagio C, Formenti P. Greenland Ice Core Record of Last Glacial Dust Sources and Atmospheric Circulation. JOURNAL OF GEOPHYSICAL RESEARCH. ATMOSPHERES : JGR 2022; 127:e2022JD036597. [PMID: 36245641 PMCID: PMC9542552 DOI: 10.1029/2022jd036597] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 07/06/2022] [Accepted: 07/08/2022] [Indexed: 06/16/2023]
Abstract
Abrupt and large-scale climate changes have occurred repeatedly and within decades during the last glaciation. These events, where dramatic warming occurs over decades, are well represented in both Greenland ice core mineral dust and temperature records, suggesting a causal link. However, the feedbacks between atmospheric dust and climate change during these Dansgaard-Oeschger events are poorly known and the processes driving changes in atmospheric dust emission and transport remain elusive. Constraining dust provenance is key to resolving these gaps. Here, we present a multi-technique analysis of Greenland dust provenance using novel and established, source diagnostic isotopic tracers as well as results from a regional climate model including dust cycle simulations. We show that the existing dominant model for the provenance of Greenland dust as sourced from combined East Asian dust and Pacific volcanics is not supported. Rather, our clay mineralogical and Hf-Sr-Nd and D/H isotopic analyses from last glacial Greenland dust and an extensive range of Northern Hemisphere potential dust sources reveal three most likely scenarios (in order of probability): direct dust sourcing from the Taklimakan Desert in western China, direct sourcing from European glacial sources, or a mix of dust originating from Europe and North Africa. Furthermore, our regional climate modeling demonstrates the plausibility of European or mixed European/North African sources for the first time. We suggest that the origin of dust to Greenland is potentially more complex than previously recognized, demonstrating more uncertainty in our understanding dust climate feedbacks during abrupt events than previously understood.
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Affiliation(s)
- G. Újvári
- Centre for Astronomy and Earth SciencesInstitute for Geological and Geochemical ResearchEötvös Loránd Research NetworkBudapestHungary
- CSFKMTA Centre of ExcellenceBudapestHungary
- Department of Lithospheric ResearchUniversity of ViennaViennaAustria
| | - U. Klötzli
- Department of Lithospheric ResearchUniversity of ViennaViennaAustria
| | - T. Stevens
- Department of Earth SciencesUppsala UniversityUppsalaSweden
| | - A. Svensson
- Physics of Ice, Climate and EarthNiels Bohr InstituteUniversity of CopenhagenCopenhagenDenmark
| | - P. Ludwig
- Institute for Meteorology and Climate ResearchKarlsruhe Institute of TechnologyKarlsruheGermany
| | - T. Vennemann
- Institute of Earth Surface DynamicsUniversity of LausanneLausanneSwitzerland
| | - S. Gier
- Department of GeologyUniversity of ViennaViennaAustria
| | - M. Horschinegg
- Department of Lithospheric ResearchUniversity of ViennaViennaAustria
| | - L. Palcsu
- Isotope Climatology and Environmental Research CentreInstitute for Nuclear ResearchDebrecenHungary
| | - D. Hippler
- Institute of Applied GeosciencesGraz University of TechnologyGrazAustria
| | - J. Kovács
- Environmental Analytical and Geoanalytical Research GroupSzentágothai Research CentreUniversity of PécsPécsHungary
- Institute of Geography and Earth SciencesUniversity of PécsPécsHungary
| | - C. Di Biagio
- Université de Paris Cité and University Paris Est CreteilCNRSLISAParisFrance
| | - P. Formenti
- Université de Paris Cité and University Paris Est CreteilCNRSLISAParisFrance
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5
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Han C, Burn LJ, Vallelonga P, Hur SD, Boutron CF, Han Y, Lee S, Lee A, Hong S. Lead Isotopic Constraints on the Provenance of Antarctic Dust and Atmospheric Circulation Patterns Prior to the Mid-Brunhes Event (~430 kyr ago). Molecules 2022; 27:molecules27134208. [PMID: 35807454 PMCID: PMC9268056 DOI: 10.3390/molecules27134208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/27/2022] [Accepted: 06/27/2022] [Indexed: 11/30/2022] Open
Abstract
A lead (Pb) isotopic record, covering the two oldest glacial–interglacial cycles (~572 to 801 kyr ago) characterized by lukewarm interglacials in the European Project for Ice Coring in Antarctica Dome C ice core, provides evidence for dust provenance in central East Antarctic ice prior to the Mid-Brunhes Event (MBE), ~430 kyr ago. Combined with published post-MBE data, distinct isotopic compositions, coupled with isotope mixing model results, suggest Patagonia/Tierra del Fuego (TdF) as the most important sources of dust during both pre-MBE and post-MBE cold and intermediate glacial periods. During interglacials, central-western Argentina emerges as a major contributor, resulting from reduced dust supply from Patagonia/TdF after the MBE, contrasting to the persistent dominance of dust from Patagonia/TdF before the MBE. The data also show a small fraction of volcanic Pb transferred from extra-Antarctic volcanoes during post-MBE interglacials, as opposed to abundant transfer prior to the MBE. These differences are most likely attributed to the enhanced wet removal efficiency with the hydrological cycle intensified over the Southern Ocean, associated with a poleward shift of the southern westerly winds (SWW) during warmer post-MBE interglacials, and vice versa during cooler pre-MBE ones. Our results highlight sensitive responses of the SWW and the associated atmospheric conditions to stepwise Antarctic warming.
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Affiliation(s)
- Changhee Han
- Department of Ocean Sciences, Inha University, 100 Inha-ro, Michuhol-gu, Incheon 22212, Korea; (C.H.); (S.L.); (A.L.)
- Division of Glacial Environment Research, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 21990, Korea; (S.D.H.); (Y.H.)
| | - Laurie J. Burn
- Department of Imaging and Applied Physics, Curtin University of Technology, GPO Box U1987, Perth, WA 6845, Australia; (L.J.B.); (P.V.)
| | - Paul Vallelonga
- Department of Imaging and Applied Physics, Curtin University of Technology, GPO Box U1987, Perth, WA 6845, Australia; (L.J.B.); (P.V.)
- Oceans Graduate School and UWA Oceans Institute, The University of Western Australia, Crawley, WA 6009, Australia
| | - Soon Do Hur
- Division of Glacial Environment Research, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 21990, Korea; (S.D.H.); (Y.H.)
| | - Claude F. Boutron
- Institut des Géosciences de l’Environnement, Université Grenoble Alpes/CNRS, 54 rue Molière, 38400 Saint Martin d’Hères, France;
| | - Yeongcheol Han
- Division of Glacial Environment Research, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 21990, Korea; (S.D.H.); (Y.H.)
| | - Sanghee Lee
- Department of Ocean Sciences, Inha University, 100 Inha-ro, Michuhol-gu, Incheon 22212, Korea; (C.H.); (S.L.); (A.L.)
- Research Unit of Frontier Exploration, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 21990, Korea
| | - Ahhyung Lee
- Department of Ocean Sciences, Inha University, 100 Inha-ro, Michuhol-gu, Incheon 22212, Korea; (C.H.); (S.L.); (A.L.)
| | - Sungmin Hong
- Department of Ocean Sciences, Inha University, 100 Inha-ro, Michuhol-gu, Incheon 22212, Korea; (C.H.); (S.L.); (A.L.)
- Correspondence:
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6
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Wu PC, Huang KF. Tracing local sources and long-range transport of PM 10 in central Taiwan by using chemical characteristics and Pb isotope ratios. Sci Rep 2021; 11:7593. [PMID: 33828152 PMCID: PMC8026966 DOI: 10.1038/s41598-021-87051-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 03/23/2021] [Indexed: 11/08/2022] Open
Abstract
Central Taiwan is among the most heavily polluted regions in Taiwan because of a complex mixing of local emissions from intense anthropogenic activities with natural dust. Long-range transport (LRT) of pollutants from outside Taiwan also contributes critically to the deterioration of air quality, especially during the northeast monsoon season. To identify the sources of particulate matter < 10 μm (PM10) in central Taiwan, this study performed several sampling campaigns, including three local events, one LRT event, and one dust storm event, during the northeast monsoon season of 2018/2019. The PM10 samples were analyzed for water-soluble ion and trace metal concentrations as well as Pb isotope ratios. Local sediments were also collected and analyzed to constrain chemical/isotopic signatures of natural sources. The Pb isotope data were interpreted together with the enrichment factors and elemental ratios of trace metals in PM10, and reanalysis data sets were used to delineate the sources of PM10 in central Taiwan. Our results suggested that Pb in PM10 was predominantly contributed by oil combustion and oil refineries during the local events (48-88%), whereas the lowest contributions were from coal combustion (< 21%). During periods of high wind speed, the contribution from natural sources increased significantly from 13 to 31%. Despite Pb represented only a small portion of PM10, a strong correlation (r = 0.89, p < 0.001, multiple regression analysis) between PM10 mass and the concentrations of Pb, V, and Al was observed in the study area, suggesting that the sources of PM10 in central Taiwan can be possibly tracked by using chemical characteristics and Pb isotopes in PM10. Moreover, the Pb isotopic signals of PM10 collected during the LRT event confirmed the impact of LRT from Mainland China, and the chemical characteristics of the PM10 significantly differed from those of the PM10 collected during local events. This study demonstrates the robustness of using a combination of Pb isotopic compositions and chemical characteristics in PM10 for source tracing in complex and heavily polluted areas.
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Affiliation(s)
- Po-Chao Wu
- Earth System Science Program, Taiwan International Graduate Program (TIGP), Academia Sinica, Taipei, Taiwan
- Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan
- College of Earth Sciences, National Central University, Taoyuan, Taiwan
| | - Kuo-Fang Huang
- Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan.
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7
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Badino F, Pini R, Bertuletti P, Ravazzi C, Delmonte B, Monegato G, Reimer P, Vallé F, Arrighi S, Bortolini E, Figus C, Lugli F, Maggi V, Marciani G, Margaritora D, Oxilia G, Romandini M, Silvestrini S, Benazzi S. The fast-acting "pulse" of Heinrich Stadial 3 in a mid-latitude boreal ecosystem. Sci Rep 2020; 10:18031. [PMID: 33093492 PMCID: PMC7581741 DOI: 10.1038/s41598-020-74905-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 09/29/2020] [Indexed: 11/10/2022] Open
Abstract
A 3800 year-long radiocarbon-dated and highly-resolved palaeoecological record from Lake Fimon (N-Italy) served to investigate the effects of potential teleconnections between North Atlantic and mid-to-low latitudes at the transition from Marine Isotope Stage (MIS) 3 to 2. Boreal ecosystems documented in the Fimon record reacted in a sensitive way to millennial and sub-millennial scale Northern Hemisphere atmospheric circulation patterns. The high median time-resolution of 58 years allows the identification of five abrupt event-boundaries (i.e., main forest expansion and decline excursions) synchronous with the sharp stadial/interstadial (GS/GI) transitions within dating uncertainties. During Heinrich Stadial 3 (HS 3) we reconstruct more open and dry conditions, compared to the other GS, with a dominant regional scale fire signal. Linkages between local fires and climate-driven fuel changes resulted in high-magnitude fire peaks close to GI/GS boundaries, even exacerbated by local peatland conditions. Finally, palaeoecological data from the HS 3 interval unveiled an internal variability suggesting a peak between 30,425 and 29,772 cal BP (2σ error) which matches more depleted δ18O values in alpine speleothems. We hypothesise that this signal, broadly resembling that of other mid-latitudes proxies, may be attributed to the southward shift of the Northern Hemisphere storm tracks and the associated delayed iceberg discharge events as documented during other HS.
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Affiliation(s)
- Federica Badino
- Department of Cultural Heritage, University of Bologna, 48121, Ravenna, Italy. .,Research Group on Vegetation, Climate and Human Stratigraphy, Laboratory of Palynology and Palaeoecology, CNR-Institute of Environmental Geology and Geoengineering (IGAG), 20126, Milan, Italy.
| | - Roberta Pini
- Research Group on Vegetation, Climate and Human Stratigraphy, Laboratory of Palynology and Palaeoecology, CNR-Institute of Environmental Geology and Geoengineering (IGAG), 20126, Milan, Italy
| | - Paolo Bertuletti
- Research Group on Vegetation, Climate and Human Stratigraphy, Laboratory of Palynology and Palaeoecology, CNR-Institute of Environmental Geology and Geoengineering (IGAG), 20126, Milan, Italy.,Department of Environmental and Earth Sciences, University of Milano-Bicocca, 20126, Milan, Italy
| | - Cesare Ravazzi
- Research Group on Vegetation, Climate and Human Stratigraphy, Laboratory of Palynology and Palaeoecology, CNR-Institute of Environmental Geology and Geoengineering (IGAG), 20126, Milan, Italy
| | - Barbara Delmonte
- Department of Environmental and Earth Sciences, University of Milano-Bicocca, 20126, Milan, Italy
| | - Giovanni Monegato
- CNR-Institute of Geosciences and Earth Resources (IGG), 35131, Padua, Italy
| | - Paula Reimer
- School of Natural and Built Environment, Queen's University Belfast, Belfast, BT7 1NN, UK
| | - Francesca Vallé
- Department of Environmental and Earth Sciences, University of Milano-Bicocca, 20126, Milan, Italy
| | - Simona Arrighi
- Department of Cultural Heritage, University of Bologna, 48121, Ravenna, Italy.,Dipartimento di Scienze Fisiche, della Terra e dell'Ambiente, Università di Siena, 53100, Siena, Italy
| | - Eugenio Bortolini
- Department of Cultural Heritage, University of Bologna, 48121, Ravenna, Italy
| | - Carla Figus
- Department of Cultural Heritage, University of Bologna, 48121, Ravenna, Italy
| | - Federico Lugli
- Department of Cultural Heritage, University of Bologna, 48121, Ravenna, Italy.,Dipartimento di Scienze Chimiche e Geologiche, Università di Modena e Reggio Emilia, 41125, Modena, Italy
| | - Valter Maggi
- Department of Environmental and Earth Sciences, University of Milano-Bicocca, 20126, Milan, Italy
| | - Giulia Marciani
- Department of Cultural Heritage, University of Bologna, 48121, Ravenna, Italy.,Dipartimento di Scienze Fisiche, della Terra e dell'Ambiente, Università di Siena, 53100, Siena, Italy
| | - Davide Margaritora
- Department of Environmental and Earth Sciences, University of Milano-Bicocca, 20126, Milan, Italy.,Dipartimento di Studi Umanistici, Sezione di Scienze Preistoriche e Antropologiche, Università di Ferrara, 44100, Ferrara, Italy
| | - Gregorio Oxilia
- Department of Cultural Heritage, University of Bologna, 48121, Ravenna, Italy
| | - Matteo Romandini
- Department of Cultural Heritage, University of Bologna, 48121, Ravenna, Italy.,Dipartimento di Studi Umanistici, Sezione di Scienze Preistoriche e Antropologiche, Università di Ferrara, 44100, Ferrara, Italy
| | - Sara Silvestrini
- Department of Cultural Heritage, University of Bologna, 48121, Ravenna, Italy
| | - Stefano Benazzi
- Department of Cultural Heritage, University of Bologna, 48121, Ravenna, Italy.,Department of Human Evolution Max Planck Institute for Evolutionary Anthropology, 04103, Leipzig, Germany
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