气候变化领域集成服务门户(CCPortal): Harmonized chronologies of a global late Quaternary pollen dataset (LegacyAge 1.0)

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DOI	10.5194/essd-14-1331-2022
	Harmonized chronologies of a global late Quaternary pollen dataset (LegacyAge 1.0)
	Li, Chenzhi; Postl, Alexander K.; Boehmer, Thomas; Cao, Xianyong; Dolman, Andrew M.; Herzschuh, Ulrike
通讯作者	Herzschuh, U (通讯作者)
发表日期	2022
ISSN	1866-3508
EISSN	1866-3516
起始页码	1331
结束页码	1343
卷号	14 期号:3
英文摘要	We present a chronology framework named LegacyAge 1.0 containing harmonized chronologies for 2831 pollen records (downloaded from the Neotoma Paleoecology Database and the supplementary Asian datasets) together with their age control points and metadata in machine-readable data formats. All chronologies use the Bayesian framework implemented in Bacon version 2.5.3. Optimal parameter settings of priors (accumulation.shape, memory.strength, memory.mean, accumulation.rate, and thickness) were identified based on information in the original publication or iteratively after preliminary model inspection. The most common control points for the chronologies are radiocarbon dates (86.1 %), calibrated by the latest calibration curves (IntCal20 and SHCal20 for the terrestrial radiocarbon dates in the Northern Hemisphere and Southern Hemisphere and Marine20 for marine materials). The original publications were consulted when dealing with outliers and inconsistencies. Several major challenges when setting up the chronologies included the waterline issue (18.8% of records), reservoir effect (4.9 %), and sediment deposition discontinuity (4.4 %). Finally, we numerically compare the LegacyAge 1.0 chronologies to those published in the original publications and show that the reliability of the chronologies of 95.4% of records could be improved according to our assessment. Our chronology framework and revised chronologies provide the opportunity to make use of the ages and age uncertainties in synthesis studies of, for example, pollen-based vegetation and climate change. The LegacyAge 1.0 dataset, including metadata, datings, harmonized chronologies, and R code used, is openaccess and available at PANGAEA (https://doi.org/10.1594/PANGAEA.933132; Li et al., 2021) and Zenodo (https://doi.org/10.5281/zenodo.5815192; Li et al., 2022), respectively.
关键词	AGE-DEPTH MODEL VEGETATION CHANGE CLIMATE-CHANGE HOLOCENE DATABASE RECONSTRUCTIONS RADIOCARBON HISTORY VARIABILITY NORTHWEST
语种	英语
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences
WOS类目	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000774857800001
来源期刊	EARTH SYSTEM SCIENCE DATA
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260644
推荐引用方式 GB/T 7714	Li, Chenzhi,Postl, Alexander K.,Boehmer, Thomas,et al. Harmonized chronologies of a global late Quaternary pollen dataset (LegacyAge 1.0)[J]. 中国科学院青藏高原研究所,2022,14(3).
APA	Li, Chenzhi,Postl, Alexander K.,Boehmer, Thomas,Cao, Xianyong,Dolman, Andrew M.,&Herzschuh, Ulrike.(2022).Harmonized chronologies of a global late Quaternary pollen dataset (LegacyAge 1.0).EARTH SYSTEM SCIENCE DATA,14(3).
MLA	Li, Chenzhi,et al."Harmonized chronologies of a global late Quaternary pollen dataset (LegacyAge 1.0)".EARTH SYSTEM SCIENCE DATA 14.3(2022).