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Garcia-Oteyza J, Giralt S, Pla-Rabes S, Antoniades D, Oliva M, Ghanbari H, Osorio-Serrano R, Palacios D. A ∼5000 year multiproxy record of summer climate in NE Greenland. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167713. [PMID: 37827316 DOI: 10.1016/j.scitotenv.2023.167713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 09/29/2023] [Accepted: 10/08/2023] [Indexed: 10/14/2023]
Abstract
The High Arctic plays a vital role in Earth's climate system, and its ecosystems are highly sensitive to global climate change. High Arctic lakes are valuable sentinels of climate change, as their sediments integrate long-term natural climatic fluctuations and anthropogenic influences. Here, we present a high-resolution ∼5000 year-reconstruction of NE Greenland climate variability from Aucella Lake (74°N, 20°E) based on physical, chemical, and biological properties of lake sediments. We use CT-scans, hyperspectral imaging, organic matter, XRD, and diatom analyses to show that changing air temperatures were controlled by a mix of regional climatic changes and local landscape feedbacks. The latest Mid-Holocene (∼5.0-3.8 cal. ka BP) was characterized by relatively warmer conditions, while the onset of the Late-Holocene was marked by abrupt temperature decreases that coincided with the beginning of glacial advances elsewhere (∼3.8-3.4 cal. ka BP). From ∼3.4-2.4 cal. ka BP, the sedimentary record indicated progressive warming, with temperature peaking during the Medieval Climate Anomaly, although temperature rises were punctuated by abrupt, short-lived cold periods. From ∼1.1-0.05 cal. ka BP, the influence of landscape factors over the system diminished. Sedimentary indicators suggested a transition towards a colder, more humid climate, coinciding with the beginning of the Little Ice Age, that was characterized by a marked decrease in air temperature that reached minimum values at the end of this period. The last 50 years at Aucella Lake were marked by abrupt temperature rises, consistent with recently observed anthropogenic global warming. Our results illustrate the importance of high-resolution multiproxy studies for accurately characterizing lake linkages to their environment and climate.
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Affiliation(s)
- J Garcia-Oteyza
- Department of Geography, Universitat de Barcelona, Catalonia, Spain.
| | - S Giralt
- Geosciences Barcelona (GEO3BCN-CSIC), Spain
| | - S Pla-Rabes
- Universitat Autònoma de Barcelona, Bellaterra (Cerdanyola del Vallès), Catalonia, Spain; CREAF, Bellaterra (Cerdanyola del Vallès), Catalonia, Spain
| | - D Antoniades
- Department of Geography & Centre for Northern Studies, Laval University, Quebec, Canada
| | - M Oliva
- Department of Geography, Universitat de Barcelona, Catalonia, Spain
| | - H Ghanbari
- Department of Geography & Centre for Northern Studies, Laval University, Quebec, Canada
| | | | - D Palacios
- Department of Geography, Universidad Complutense de Madrid, Spain
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2
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McFarlin JM, Axford Y, Kusch S, Masterson AL, Lasher GE, Osburn MR. Aquatic plant wax hydrogen and carbon isotopes in Greenland lakes record shifts in methane cycling during past Holocene warming. SCIENCE ADVANCES 2023; 9:eadh9704. [PMID: 37774023 PMCID: PMC10541501 DOI: 10.1126/sciadv.adh9704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Accepted: 08/30/2023] [Indexed: 10/01/2023]
Abstract
Predicting changes to methane cycling in Arctic lakes is of global concern in a warming world but records constraining lake methane dynamics with past warming are rare. Here, we demonstrate that the hydrogen isotopic composition (δ2H) of mid-chain waxes derived from aquatic moss clearly decouples from precipitation during past Holocene warmth and instead records incorporation of methane in plant biomass. Trends in δ2Hmoss and δ13Cmoss values point to widespread Middle Holocene (11,700 to 4200 years ago) shifts in lake methane cycling across Greenland during millennia of elevated summer temperatures, heightened productivity, and lowered hypolimnetic oxygen. These data reveal ongoing warming may lead to increases in methane-derived C in many Arctic lakes, including lakes where methane is not a major component of the C cycle today. This work highlights a previously unrecognized mechanism influencing δ2H values of mid-chain wax and draws attention to the unquantified role of common aquatic mosses as a potentially important sink of lake methane across the Arctic.
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Affiliation(s)
- Jamie M. McFarlin
- Department of Geology and Geophysics, University of Wyoming, Laramie, WY, USA
- Department of Earth and Planetary Sciences, Northwestern University, Evanston, IL, USA
| | - Yarrow Axford
- Department of Earth and Planetary Sciences, Northwestern University, Evanston, IL, USA
| | - Stephanie Kusch
- Institut des Sciences de la Mer, Université du Québec à Rimouski, Rimouski, Canada
| | - Andrew L. Masterson
- Department of Earth and Planetary Sciences, Northwestern University, Evanston, IL, USA
| | - G. Everett Lasher
- Department of Earth and Planetary Sciences, Northwestern University, Evanston, IL, USA
| | - Magdalena R. Osburn
- Department of Earth and Planetary Sciences, Northwestern University, Evanston, IL, USA
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3
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Yang H, Krebs-Kanzow U, Kleiner T, Sidorenko D, Rodehacke CB, Shi X, Gierz P, Niu L, Gowan EJ, Hinck S, Liu X, Stap LB, Lohmann G. Impact of paleoclimate on present and future evolution of the Greenland Ice Sheet. PLoS One 2022; 17:e0259816. [PMID: 35051173 PMCID: PMC8776332 DOI: 10.1371/journal.pone.0259816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 10/26/2021] [Indexed: 12/03/2022] Open
Abstract
Using transient climate forcing based on simulations from the Alfred Wegener Institute Earth System Model (AWI-ESM), we simulate the evolution of the Greenland Ice Sheet (GrIS) from the last interglacial (125 ka, kiloyear before present) to 2100 AD with the Parallel Ice Sheet Model (PISM). The impact of paleoclimate, especially Holocene climate, on the present and future evolution of the GrIS is explored. Our simulations of the past show close agreement with reconstructions with respect to the recent timing of the peaks in ice volume and the climate of Greenland. The maximum and minimum ice volume at around 18-17 ka and 6-5 ka lag the respective extremes in climate by several thousand years, implying that the ice volume response of the GrIS strongly lags climatic changes. Given that Greenland's climate was getting colder from the Holocene Thermal Maximum (i.e., 8 ka) to the Pre-Industrial era, our simulation implies that the GrIS experienced growth from the mid-Holocene to the industrial era. Due to this background trend, the GrIS still gains mass until the second half of the 20th century, even though anthropogenic warming begins around 1850 AD. This is also in agreement with observational evidence showing mass loss of the GrIS does not begin earlier than the late 20th century. Our results highlight that the present evolution of the GrIS is not only controlled by the recent climate changes, but is also affected by paleoclimate, especially the relatively warm Holocene climate. We propose that the GrIS was not in equilibrium throughout the entire Holocene and that the slow response to Holocene climate needs to be represented in ice sheet simulations in order to predict ice mass loss, and therefore sea level rise, accurately.
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Affiliation(s)
- Hu Yang
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Uta Krebs-Kanzow
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Thomas Kleiner
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Dmitry Sidorenko
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Christian Bernd Rodehacke
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
- Danish Meteorological Institute, Copenhagen, Denmark
| | - Xiaoxu Shi
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Paul Gierz
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Lu Niu
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Evan J. Gowan
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
- Department of Earth and Environmental Sciences, Kumamoto University, Kumamoto, Japan
| | - Sebastian Hinck
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Xingxing Liu
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, China
| | - Lennert B. Stap
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
- Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Utrecht, Netherlands
| | - Gerrit Lohmann
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
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4
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Corella JP, Maffezzoli N, Spolaor A, Vallelonga P, Cuevas CA, Scoto F, Müller J, Vinther B, Kjær HA, Cozzi G, Edwards R, Barbante C, Saiz-Lopez A. Climate changes modulated the history of Arctic iodine during the Last Glacial Cycle. Nat Commun 2022; 13:88. [PMID: 35013214 PMCID: PMC8748508 DOI: 10.1038/s41467-021-27642-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 12/03/2021] [Indexed: 11/23/2022] Open
Abstract
Iodine has a significant impact on promoting the formation of new ultrafine aerosol particles and accelerating tropospheric ozone loss, thereby affecting radiative forcing and climate. Therefore, understanding the long-term natural evolution of iodine, and its coupling with climate variability, is key to adequately assess its effect on climate on centennial to millennial timescales. Here, using two Greenland ice cores (NEEM and RECAP), we report the Arctic iodine variability during the last 127,000 years. We find the highest and lowest iodine levels recorded during interglacial and glacial periods, respectively, modulated by ocean bioproductivity and sea ice dynamics. Our sub-decadal resolution measurements reveal that high frequency iodine emission variability occurred in pace with Dansgaard/Oeschger events, highlighting the rapid Arctic ocean-ice-atmosphere iodine exchange response to abrupt climate changes. Finally, we discuss if iodine levels during past warmer-than-present climate phases can serve as analogues of future scenarios under an expected ice-free Arctic Ocean. We argue that the combination of natural biogenic ocean iodine release (boosted by ongoing Arctic warming and sea ice retreat) and anthropogenic ozone-induced iodine emissions may lead to a near future scenario with the highest iodine levels of the last 127,000 years.
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Affiliation(s)
- Juan Pablo Corella
- Department of Atmospheric Chemistry and Climate, Institute of Physical Chemistry Rocasolano, CSIC, Serrano 119, 28006, Madrid, Spain.
- CIEMAT, Environmental Department, Av. Complutense 40, 28040, Madrid, Spain.
| | - Niccolo Maffezzoli
- Physics of Ice Climate and Earth, Niels Bohr Institute, University of Copenhagen, Tagensvej 16, Copenhagen N, 2200, Denmark
- Institute of Polar Sciences, CNR- ISP, Via Torino 155, 30172, Venice, Italy
- Ca' Foscari University of Venice, Department of Environmental Sciences, Informatics and Statistics, Via Torino 155, 30172, Venice, Italy
| | - Andrea Spolaor
- Institute of Polar Sciences, CNR- ISP, Via Torino 155, 30172, Venice, Italy
- Ca' Foscari University of Venice, Department of Environmental Sciences, Informatics and Statistics, Via Torino 155, 30172, Venice, Italy
| | - Paul Vallelonga
- Physics of Ice Climate and Earth, Niels Bohr Institute, University of Copenhagen, Tagensvej 16, Copenhagen N, 2200, Denmark
| | - Carlos A Cuevas
- Department of Atmospheric Chemistry and Climate, Institute of Physical Chemistry Rocasolano, CSIC, Serrano 119, 28006, Madrid, Spain
| | - Federico Scoto
- Ca' Foscari University of Venice, Department of Environmental Sciences, Informatics and Statistics, Via Torino 155, 30172, Venice, Italy
- Institute of Atmospheric Sciences and Climate, ISAC-CNR, S.P Lecce-Monteroni km1.2, 73100, Lecce, Italy
| | - Juliane Müller
- Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, Am Alten Hafen 26, 27568, Bremerhaven, Germany
- MARUM Research Faculty, University of Bremen, Leobener Strasse 8, 28359, Bremen, Germany
| | - Bo Vinther
- Physics of Ice Climate and Earth, Niels Bohr Institute, University of Copenhagen, Tagensvej 16, Copenhagen N, 2200, Denmark
| | - Helle A Kjær
- Physics of Ice Climate and Earth, Niels Bohr Institute, University of Copenhagen, Tagensvej 16, Copenhagen N, 2200, Denmark
| | - Giulio Cozzi
- Institute of Polar Sciences, CNR- ISP, Via Torino 155, 30172, Venice, Italy
- Ca' Foscari University of Venice, Department of Environmental Sciences, Informatics and Statistics, Via Torino 155, 30172, Venice, Italy
| | - Ross Edwards
- Physics and Astronomy, Curtin University, Kent St, Bentley, WA, 6102, Australia
- Department of Civil and Environmental Engineering, UW-Madison, Madison, WI, 53706, USA
| | - Carlo Barbante
- Institute of Polar Sciences, CNR- ISP, Via Torino 155, 30172, Venice, Italy
- Ca' Foscari University of Venice, Department of Environmental Sciences, Informatics and Statistics, Via Torino 155, 30172, Venice, Italy
| | - Alfonso Saiz-Lopez
- Department of Atmospheric Chemistry and Climate, Institute of Physical Chemistry Rocasolano, CSIC, Serrano 119, 28006, Madrid, Spain.
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5
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Crump SE, Fréchette B, Power M, Cutler S, de Wet G, Raynolds MK, Raberg JH, Briner JP, Thomas EK, Sepúlveda J, Shapiro B, Bunce M, Miller GH. Ancient plant DNA reveals High Arctic greening during the Last Interglacial. Proc Natl Acad Sci U S A 2021; 118:e2019069118. [PMID: 33723011 PMCID: PMC8020792 DOI: 10.1073/pnas.2019069118] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Summer warming is driving a greening trend across the Arctic, with the potential for large-scale amplification of climate change due to vegetation-related feedbacks [Pearson et al., Nat. Clim. Chang. (3), 673-677 (2013)]. Because observational records are sparse and temporally limited, past episodes of Arctic warming can help elucidate the magnitude of vegetation response to temperature change. The Last Interglacial ([LIG], 129,000 to 116,000 y ago) was the most recent episode of Arctic warming on par with predicted 21st century temperature change [Otto-Bliesner et al., Philos. Trans. A Math. Phys. Eng. Sci. (371), 20130097 (2013) and Post et al., SciAdv (5), eaaw9883 (2019)]. However, high-latitude terrestrial records from this period are rare, so LIG vegetation distributions are incompletely known. Pollen-based vegetation reconstructions can be biased by long-distance pollen transport, further obscuring the paleoenvironmental record. Here, we present a LIG vegetation record based on ancient DNA in lake sediment and compare it with fossil pollen. Comprehensive plant community reconstructions through the last and current interglacial (the Holocene) on Baffin Island, Arctic Canada, reveal coherent climate-driven community shifts across both interglacials. Peak LIG warmth featured a ∼400-km northward range shift of dwarf birch, a key woody shrub that is again expanding northward. Greening of the High Arctic-documented here by multiple proxies-likely represented a strong positive feedback on high-latitude LIG warming. Authenticated ancient DNA from this lake sediment also extends the useful preservation window for the technique and highlights the utility of combining traditional and molecular approaches for gleaning paleoenvironmental insights to better anticipate a warmer future.
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Affiliation(s)
- Sarah E Crump
- Institute of Arctic and Alpine Research and Department of Geological Sciences, University of Colorado, Boulder, CO 80303;
- Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, CA 95064
| | - Bianca Fréchette
- Geotop, Université du Québec à Montréal, Montréal, H2L 2C4, Canada
| | - Matthew Power
- Trace and Environmental DNA Laboratory, School of Molecular and Life Sciences, Curtin University, 6845 Bentley, Australia
| | - Sam Cutler
- Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, CA 95064
| | - Gregory de Wet
- Institute of Arctic and Alpine Research and Department of Geological Sciences, University of Colorado, Boulder, CO 80303
- Department of Geosciences, Smith College, Northampton, MA 01063
| | - Martha K Raynolds
- Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK 99775
| | - Jonathan H Raberg
- Institute of Arctic and Alpine Research and Department of Geological Sciences, University of Colorado, Boulder, CO 80303
| | - Jason P Briner
- Department of Geology, University at Buffalo, Buffalo, NY 14260
| | | | - Julio Sepúlveda
- Institute of Arctic and Alpine Research and Department of Geological Sciences, University of Colorado, Boulder, CO 80303
| | - Beth Shapiro
- Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, CA 95064
- HHMI, University of California, Santa Cruz, CA 95064
| | - Michael Bunce
- Trace and Environmental DNA Laboratory, School of Molecular and Life Sciences, Curtin University, 6845 Bentley, Australia
- New Zealand Environment Protection Authority, 6011 Wellington, New Zealand
| | - Gifford H Miller
- Institute of Arctic and Alpine Research and Department of Geological Sciences, University of Colorado, Boulder, CO 80303
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6
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van der Bilt WGM, Lane CS. Lake sediments with Azorean tephra reveal ice-free conditions on coastal northwest Spitsbergen during the Last Glacial Maximum. SCIENCE ADVANCES 2019; 5:eaaw5980. [PMID: 31681839 PMCID: PMC6810458 DOI: 10.1126/sciadv.aaw5980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 09/18/2019] [Indexed: 06/10/2023]
Abstract
Lake sediments retrieved from the beds of former nonerosive ice sheets offer unique possibilities to constrain changes in the extent and style of past glaciation, and place them in an absolutely dated context. We present the first pre-Holocene lake sediments from Arctic Svalbard. Radiocarbon dating of terrestrial plant fossils reveals that the investigated catchment was unglaciated and vegetated between 30 and 20 ka B.P. during the global Last Glacial Maximum. The presence of volcanic ash from a contemporaneous Azorean eruption also provides evidence for ice-free conditions. Indicators of sediment compaction and a depositional hiatus suggest subsequent coverage by nonerosive ice until 11 ka B.P. Comparison with regional paleoclimate data indicates that sea ice variability controlled this pattern of ice sheet evolution by modulating moisture supply. Facing rapid regional sea ice losses, our findings have implications for the future response of the Arctic's cryosphere, a major driver of global sea-level rise.
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Affiliation(s)
- Willem G. M. van der Bilt
- Department of Earth Science, University of Bergen, Allégaten 41, 5007 Bergen, Norway
- Bjerknes Centre for Climate Research, Bergen, Norway
| | - Christine S. Lane
- Department of Geography, University of Cambridge, Downing Place, CB2 3EN Cambridge, UK
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