Greenland-Antarctic phase relations and millennial timescale fluctuations in the Greenland cores. Quaternary Science Reviews 22/15
The Greenland (GRIP/GISP2) and Antarctic (Byrd) ice-cores are examined in the frequency domain, with the data synchronized using common methane variations. Using conventional time-series analysis, a simple picture emerges: there is low-frequency (periods longer than about 10 kyr) coherence between t...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.389.9428 2023-05-15T13:58:08+02:00 Greenland-Antarctic phase relations and millennial timescale fluctuations in the Greenland cores. Quaternary Science Reviews 22/15 Carl Wunsch The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.389.9428 http://ocean.mit.edu/~cwunsch/papersonline/JQSR1244-2003.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.389.9428 http://ocean.mit.edu/~cwunsch/papersonline/JQSR1244-2003.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://ocean.mit.edu/~cwunsch/papersonline/JQSR1244-2003.pdf text ftciteseerx 2016-09-18T00:43:07Z The Greenland (GRIP/GISP2) and Antarctic (Byrd) ice-cores are examined in the frequency domain, with the data synchronized using common methane variations. Using conventional time-series analysis, a simple picture emerges: there is low-frequency (periods longer than about 10 kyr) coherence between the two records, consistent with a simple time delay, Antarctica leading by 1– 2 kyr: Two geographical data points are however, inadequate to infer causality from the south to north time lag. At higher frequencies, in the millennial band, there is no measurable average relationship between the records and they appear to represent different processes, with a regional character. A serious question concerns the extent to which the Greenland cores reflect tracer concentration change without corresponding abrupt climate change. The large, abrupt shifts in ice d 18 O can be rationalized as owing to wind trajectory shifts, perhaps of rather modest size. Many different physical phenomena probably do, however, contribute to the record as a function of time, and time scale. r 2003 Elsevier Ltd. All rights reserved. 1. Text Antarc* Antarctic Antarctica Greenland GRIP Unknown Antarctic Byrd Greenland |
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ftciteseerx |
language |
English |
description |
The Greenland (GRIP/GISP2) and Antarctic (Byrd) ice-cores are examined in the frequency domain, with the data synchronized using common methane variations. Using conventional time-series analysis, a simple picture emerges: there is low-frequency (periods longer than about 10 kyr) coherence between the two records, consistent with a simple time delay, Antarctica leading by 1– 2 kyr: Two geographical data points are however, inadequate to infer causality from the south to north time lag. At higher frequencies, in the millennial band, there is no measurable average relationship between the records and they appear to represent different processes, with a regional character. A serious question concerns the extent to which the Greenland cores reflect tracer concentration change without corresponding abrupt climate change. The large, abrupt shifts in ice d 18 O can be rationalized as owing to wind trajectory shifts, perhaps of rather modest size. Many different physical phenomena probably do, however, contribute to the record as a function of time, and time scale. r 2003 Elsevier Ltd. All rights reserved. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Carl Wunsch |
spellingShingle |
Carl Wunsch Greenland-Antarctic phase relations and millennial timescale fluctuations in the Greenland cores. Quaternary Science Reviews 22/15 |
author_facet |
Carl Wunsch |
author_sort |
Carl Wunsch |
title |
Greenland-Antarctic phase relations and millennial timescale fluctuations in the Greenland cores. Quaternary Science Reviews 22/15 |
title_short |
Greenland-Antarctic phase relations and millennial timescale fluctuations in the Greenland cores. Quaternary Science Reviews 22/15 |
title_full |
Greenland-Antarctic phase relations and millennial timescale fluctuations in the Greenland cores. Quaternary Science Reviews 22/15 |
title_fullStr |
Greenland-Antarctic phase relations and millennial timescale fluctuations in the Greenland cores. Quaternary Science Reviews 22/15 |
title_full_unstemmed |
Greenland-Antarctic phase relations and millennial timescale fluctuations in the Greenland cores. Quaternary Science Reviews 22/15 |
title_sort |
greenland-antarctic phase relations and millennial timescale fluctuations in the greenland cores. quaternary science reviews 22/15 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.389.9428 http://ocean.mit.edu/~cwunsch/papersonline/JQSR1244-2003.pdf |
geographic |
Antarctic Byrd Greenland |
geographic_facet |
Antarctic Byrd Greenland |
genre |
Antarc* Antarctic Antarctica Greenland GRIP |
genre_facet |
Antarc* Antarctic Antarctica Greenland GRIP |
op_source |
http://ocean.mit.edu/~cwunsch/papersonline/JQSR1244-2003.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.389.9428 http://ocean.mit.edu/~cwunsch/papersonline/JQSR1244-2003.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766266223720398848 |