Reconstruction of annual accumulation rate on firn synchronizing H2O2 concentration data with an estimated temperature record
This work deals with two distinct datasets, a well preserved H 2 O 2 concentration data from firn cores at a high deposition location and a temperature time series, estimated from the daily records from four Antarctic stations around the Antarctic Peninsula. With them we have produced a time scale,...
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ftcopernicus:oai:publications.copernicus.org:tcd91277 2023-05-15T13:31:39+02:00 Reconstruction of annual accumulation rate on firn synchronizing H2O2 concentration data with an estimated temperature record Travassos, Jandyr M. Martins, Saulo S. Potocki, Mariusz Simões, Jefferson C. 2021-01-05 application/pdf https://doi.org/10.5194/tc-2020-342 https://tc.copernicus.org/preprints/tc-2020-342/ eng eng doi:10.5194/tc-2020-342 https://tc.copernicus.org/preprints/tc-2020-342/ eISSN: 1994-0424 Text 2021 ftcopernicus https://doi.org/10.5194/tc-2020-342 2021-01-11T17:22:14Z This work deals with two distinct datasets, a well preserved H 2 O 2 concentration data from firn cores at a high deposition location and a temperature time series, estimated from the daily records from four Antarctic stations around the Antarctic Peninsula. With them we have produced a time scale, an ice–core chronology, for the 133 deep borehole DP-07-1 from Plateau Detroit, Antarctic Peninsula. We constructed the chronology through a non-linear pairing transformation of the two series, based entirely on mathematical optimization, compensating the peroxide frequency scaling, reflecting the gradual thinning of the annual firn layers with depth. We resorted to a dynamic time warping algorithm to find an optimal alignment between the two data series, allowing for the thinning of the annual firn layers with depth and the estimation of their original thicknesses at time of deposition. The core chronology spanning from Jan-1980 to Dec-2010 for the borehole reach, a time frame of a mere 30 years period, revealing a fairly stable 11 year average for the accumulation rate of 2.5 m w.e./y. Text Antarc* Antarctic Antarctic Peninsula ice core Copernicus Publications: E-Journals Antarctic The Antarctic Antarctic Peninsula Detroit ENVELOPE(-60.000,-60.000,-64.167,-64.167) |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
This work deals with two distinct datasets, a well preserved H 2 O 2 concentration data from firn cores at a high deposition location and a temperature time series, estimated from the daily records from four Antarctic stations around the Antarctic Peninsula. With them we have produced a time scale, an ice–core chronology, for the 133 deep borehole DP-07-1 from Plateau Detroit, Antarctic Peninsula. We constructed the chronology through a non-linear pairing transformation of the two series, based entirely on mathematical optimization, compensating the peroxide frequency scaling, reflecting the gradual thinning of the annual firn layers with depth. We resorted to a dynamic time warping algorithm to find an optimal alignment between the two data series, allowing for the thinning of the annual firn layers with depth and the estimation of their original thicknesses at time of deposition. The core chronology spanning from Jan-1980 to Dec-2010 for the borehole reach, a time frame of a mere 30 years period, revealing a fairly stable 11 year average for the accumulation rate of 2.5 m w.e./y. |
format |
Text |
author |
Travassos, Jandyr M. Martins, Saulo S. Potocki, Mariusz Simões, Jefferson C. |
spellingShingle |
Travassos, Jandyr M. Martins, Saulo S. Potocki, Mariusz Simões, Jefferson C. Reconstruction of annual accumulation rate on firn synchronizing H2O2 concentration data with an estimated temperature record |
author_facet |
Travassos, Jandyr M. Martins, Saulo S. Potocki, Mariusz Simões, Jefferson C. |
author_sort |
Travassos, Jandyr M. |
title |
Reconstruction of annual accumulation rate on firn synchronizing H2O2 concentration data with an estimated temperature record |
title_short |
Reconstruction of annual accumulation rate on firn synchronizing H2O2 concentration data with an estimated temperature record |
title_full |
Reconstruction of annual accumulation rate on firn synchronizing H2O2 concentration data with an estimated temperature record |
title_fullStr |
Reconstruction of annual accumulation rate on firn synchronizing H2O2 concentration data with an estimated temperature record |
title_full_unstemmed |
Reconstruction of annual accumulation rate on firn synchronizing H2O2 concentration data with an estimated temperature record |
title_sort |
reconstruction of annual accumulation rate on firn synchronizing h2o2 concentration data with an estimated temperature record |
publishDate |
2021 |
url |
https://doi.org/10.5194/tc-2020-342 https://tc.copernicus.org/preprints/tc-2020-342/ |
long_lat |
ENVELOPE(-60.000,-60.000,-64.167,-64.167) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Detroit |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Detroit |
genre |
Antarc* Antarctic Antarctic Peninsula ice core |
genre_facet |
Antarc* Antarctic Antarctic Peninsula ice core |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-2020-342 https://tc.copernicus.org/preprints/tc-2020-342/ |
op_doi |
https://doi.org/10.5194/tc-2020-342 |
_version_ |
1766019941688934400 |