气候变化领域集成服务门户(CCPortal): Calibrated cryo-cell UV-LA-ICPMS elemental concentrations from the NGRIP ice core reveal abrupt, sub-Annual variability in dust across the GI-21.2 interstadial period

CCPortal

DOI	10.5194/tc-11-1297-2017
	Calibrated cryo-cell UV-LA-ICPMS elemental concentrations from the NGRIP ice core reveal abrupt, sub-Annual variability in dust across the GI-21.2 interstadial period
	Lunga D.D.; Müller W.; Olander Rasmussen S.; Svensson A.; Vallelonga P.
发表日期	2017
ISSN	19940416
卷号	11 期号:3
英文摘要	Several abrupt shifts from periods of extreme cold (Greenland stadials, GS) to relatively warmer conditions (Greenland interstadials, GI) called Dansgaard-Oeschger events are recorded in the Greenland ice cores. Using cryo-cell UV-laser-Ablation inductively coupled-plasma mass spectrometry (UV-LA-ICPMS), we analysed a 2.85ĝ€m NGRIP ice core section (2691.50-2688.65ĝ€m depth, age interval 84.86-85.09ĝ€kaĝ€b2k, thus covering ĝ1/4 ĝ€230 years) across the transitions of GI-21.2, a short-lived interstadial prior to interstadial GI-21.1. GI-21.2 is a ĝ1/4 ĝ€100-year long period with d18O values 3-4ĝ€‰ higher than the following ĝ1/4 ĝ€200 years of stadial conditions (GS-21.2), which precede the major GI-21.1 warming. We report concentrations of major elements indicative of dust and/or sea salt (Na, Fe, Al, Ca, Mg) at a spatial resolution of ĝ1/4 ĝ€200ĝ€μm, while maintaining detection limits in the low-ppb range, thereby achieving sub-Annual time resolution even in deep NGRIP ice. We present an improved external calibration and quantification procedure using a set of five ice standards made from aqueous (international) standard solutions. Our results show that element concentrations decrease drastically (more than 10-fold) at the warming onset of GI-21.2 at the scale of a single year, followed by relatively low concentrations characterizing the interstadial part before gradually reaching again typical stadial values. © Author(s) 2017.
学科领域	annual variation; calibration; chemical element; concentration (composition); dust; ice core; interstadial; mass spectrometry; NorthGRIP; sea salt; spatial resolution; ultraviolet radiation; warming; Arctic; Greenland; Greenland Ice Sheet
语种	英语
scopus关键词	annual variation; calibration; chemical element; concentration (composition); dust; ice core; interstadial; mass spectrometry; NorthGRIP; sea salt; spatial resolution; ultraviolet radiation; warming; Arctic; Greenland; Greenland Ice Sheet
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119391
作者单位	Royal Holloway University of London, Egham, TW20 0EX, United Kingdom; Alfred Wegener Instiutute for Polar and Marine Research, Bremerhaven, 27570, Germany; Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Copenhagen, 2100, Denmark
推荐引用方式 GB/T 7714	Lunga D.D.,Müller W.,Olander Rasmussen S.,et al. Calibrated cryo-cell UV-LA-ICPMS elemental concentrations from the NGRIP ice core reveal abrupt, sub-Annual variability in dust across the GI-21.2 interstadial period[J],2017,11(3).
APA	Lunga D.D.,Müller W.,Olander Rasmussen S.,Svensson A.,&Vallelonga P..(2017).Calibrated cryo-cell UV-LA-ICPMS elemental concentrations from the NGRIP ice core reveal abrupt, sub-Annual variability in dust across the GI-21.2 interstadial period.Cryosphere,11(3).
MLA	Lunga D.D.,et al."Calibrated cryo-cell UV-LA-ICPMS elemental concentrations from the NGRIP ice core reveal abrupt, sub-Annual variability in dust across the GI-21.2 interstadial period".Cryosphere 11.3(2017).