气候变化领域集成服务门户(CCPortal): Reconstruction of Paleofire Emissions Over the Past Millennium From Measurements of Ice Core Acetylene

CCPortal

DOI	10.1029/2019GL085101
	Reconstruction of Paleofire Emissions Over the Past Millennium From Measurements of Ice Core Acetylene
	Nicewonger M.R.; Aydin M.; Prather M.J.; Saltzman E.S.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:3
英文摘要	Acetylene is a short-lived trace gas produced during combustion of fossil fuels, biomass, and biofuels. Biomass burning is likely the only major source of acetylene in the preindustrial atmosphere, making ice core acetylene a powerful tool for reconstructing paleofire emissions. Here we present a 2,000-year atmospheric record of acetylene reconstructed from analysis of air bubbles trapped in Greenland and Antarctic ice cores and infer pyrogenic acetylene emissions using a chemistry transport model. From 0 to 1500 CE, Antarctic acetylene averages 36 ± 1 pmol mol−1 (mean ± 1 SE), roughly double the annual mean over Antarctica today. Antarctic acetylene declines during the Little Ice Age by over 50% to 17 ± 2 pmol mol−1 from 1650 to 1750 CE. Acetylene over Greenland declines less dramatically over the same period. Modeling results suggest that pyrogenic acetylene emissions during 1000–1500 CE were sustained at rates significantly greater than modern day and declined by over 50% during the 1650–1750 CE period. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Acetylene; Atmospheric chemistry; Atmospheric movements; Biofuels; Biomass; Chemical analysis; Fossil fuels; Glacial geology; Lighting; Biomass-burning; Common Era; Ice core; Little Ice Age; Medieval Period; Ice; acetylene; atmospheric modeling; atmospheric transport; biomass burning; emission; ice core; Little Ice Age; measurement method; Medieval; paleoclimate; reconstruction; trace gas; Antarctica; Arctic; Greenland
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170795
作者单位	Department of Earth System Science, University of California, Irvine, CA, United States; Department of Chemistry, University of California, Irvine, CA, United States
推荐引用方式 GB/T 7714	Nicewonger M.R.,Aydin M.,Prather M.J.,et al. Reconstruction of Paleofire Emissions Over the Past Millennium From Measurements of Ice Core Acetylene[J],2020,47(3).
APA	Nicewonger M.R.,Aydin M.,Prather M.J.,&Saltzman E.S..(2020).Reconstruction of Paleofire Emissions Over the Past Millennium From Measurements of Ice Core Acetylene.Geophysical Research Letters,47(3).
MLA	Nicewonger M.R.,et al."Reconstruction of Paleofire Emissions Over the Past Millennium From Measurements of Ice Core Acetylene".Geophysical Research Letters 47.3(2020).