气候变化领域集成服务门户(CCPortal): 2600 years of stratospheric volcanism reconstruction through sulfate isotopes for Antarctic ice DomeC

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.895169
	2600 years of stratospheric volcanism reconstruction through sulfate isotopes for Antarctic ice DomeC
	Gautier; Elsa; Savarino; Joël; Farquhar; James
发布日期	2018-10-10
数据集类型	dataset
英文简介	We present a 2600 year chronology of stratospheric volcanic events using isotopic signatures (Δ33S and in some cases Δ17O) of ice core sulfate. Five closely-located ice cores from Dome C, Antarctica, are used to reconstruct a record that differs subtly from recent reconstructions calibrated using synchronous volcanic sulfate deposition in Greenland and Antarctica to identify eruptions with global-scale sulfate distribution. Comparing the Dome C stratospheric reconstruction shows good agreement with the recent parts of these bipolar reconstructions, but diverges deeper in the record revealing tropospheric signals for some previously assigned bipolar events. The comparison also reveals several high latitude stratospheric events that are not bipolar. Finally, the Δ17O anomaly of sulfate collapses for the largest volcanic eruptions, showing a further change in atmospheric chemistry induced by large emissions, providing additional levels for climate-volcano connections and supporting the value of adding isotopic information to bipolar volcanic reconstructions.
空间范围	Latitude: -75.102000 * Longitude: 123.395000
语种	英语
国家	国际
学科大类	气候变化
学科子类	冰冻圈
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/214205
推荐引用方式 GB/T 7714	Gautier,Elsa,Savarino,et al. 2600 years of stratospheric volcanism reconstruction through sulfate isotopes for Antarctic ice DomeC.2018-10-10.https://doi.org/10.1594/PANGAEA.895169.