气候变化领域集成服务门户(CCPortal): Reconstruction of annual accumulation rate on firn, synchronising H2O2 concentration data with an estimated temperature record

CCPortal

DOI	10.5194/tc-15-3495-2021
	Reconstruction of annual accumulation rate on firn, synchronising H2O2 concentration data with an estimated temperature record
	Travassos J.M.; Martins S.S.; Potocki M.; Simões J.C.
发表日期	2021
ISSN	19940416
起始页码	3495
结束页码	3505
卷号	15 期号:7
英文摘要	This work deals with reconstructing firn layer thicknesses at the deposition time from the firn's observed thickness in ice cores, thus reconstructing the annual accumulation, yielding a timescale and an ice-core chronology. We employed a dynamic time warping algorithm to find an optimal, non-linear alignment between an H2O2 concentration data series from 98ĝm worth of ice cores of a borehole on the central ice divide of the Detroit Plateau, the Antarctic Peninsula, and an estimated local temperature time series. The viability and the physical reliability of the procedure are rooted in the robustness of the seasonal marker H2O2 in a high-accumulation context, which brought the entire borehole to within the operational life span of four Antarctic stations around the Antarctic Peninsula. The process was heavily based on numerical optimisation, producing a mathematically sound match between the two series to estimate the annual layering efficiently on the entire data section at once, being disposition-free. The results herein confirm a high annual accumulation rate of aNCombining double low line2.8ĝmĝw.e./yr, which is of the same order of magnitude as and highly correlated with that of the Bruce Plateau and twice as large as that of the Gomez Plateau, 300 and 1200ĝkm further south, respectively. © Copyright:
语种	英语
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/202436
作者单位	Graduate Program in Geophysics, Universidade Federal Do Pará (UFPA), Rua Augusto Corrêa n, 01, Belém, Pará, Brazil; Graduate Program in Geology, Universidade Federal Rural Do Rio de Janeiro (UFRRJ), 465ĝkm 7, Seropédica, Brazil; Centro Polar e Climático, Universidade Federal Do Rio Grande Do sul (UFRGS), Porto Alegre, Brazil; Climate Change Institute, University of Maine, Orono, ME 04469, United States; School of Earth and Climate Sciences, University of Maine, Orono, ME 04469, United States
推荐引用方式 GB/T 7714	Travassos J.M.,Martins S.S.,Potocki M.,et al. Reconstruction of annual accumulation rate on firn, synchronising H2O2 concentration data with an estimated temperature record[J],2021,15(7).
APA	Travassos J.M.,Martins S.S.,Potocki M.,&Simões J.C..(2021).Reconstruction of annual accumulation rate on firn, synchronising H2O2 concentration data with an estimated temperature record.Cryosphere,15(7).
MLA	Travassos J.M.,et al."Reconstruction of annual accumulation rate on firn, synchronising H2O2 concentration data with an estimated temperature record".Cryosphere 15.7(2021).