Multispectral analysis of Northern Hemisphere temperature record over the last five millennia
Aiming to describe spatio-temporal climate variability on decadal-to-centennial time scales and longer, we analyzed a data set of 26 proxy records extending back 1,000–5,000 years; all records chosen were calibrated to yield temperatures. The seven irregularly sampled series in the data set were int...
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Online Access: | http://hdl.handle.net/2318/157488 https://doi.org/10.1007/s00382-014-2331-1 |
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ftunivtorino:oai:iris.unito.it:2318/157488 2023-10-29T02:36:45+01:00 Multispectral analysis of Northern Hemisphere temperature record over the last five millennia TARICCO, Carla MANCUSO, SALVATORE ALESSIO, Silvia Maria F. C. Ljungqvist M. Ghil C. Taricco S. Mancuso F.C. Ljungqvist S. Alessio M. Ghil 2014 http://hdl.handle.net/2318/157488 https://doi.org/10.1007/s00382-014-2331-1 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000354712500005 firstpage:1 lastpage:22 numberofpages:22 journal:CLIMATE DYNAMICS http://hdl.handle.net/2318/157488 doi:10.1007/s00382-014-2331-1 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84929998602 info:eu-repo/semantics/closedAccess paleoclimate temperature proxy records info:eu-repo/semantics/article 2014 ftunivtorino https://doi.org/10.1007/s00382-014-2331-1 2023-10-03T22:22:06Z Aiming to describe spatio-temporal climate variability on decadal-to-centennial time scales and longer, we analyzed a data set of 26 proxy records extending back 1,000–5,000 years; all records chosen were calibrated to yield temperatures. The seven irregularly sampled series in the data set were interpolated to a regular grid by optimized methods and then two advanced spectral methods—namely singular-spectrum analysis (SSA) and the continuous wavelet transform—were applied to individual series to separate significant oscillations from the high noise background. This univariate analysis identified several common periods across many of the 26 proxy records: a millennial trend, as well as oscillations of about 100 and 200 years, and a broad peak in the 40–70-year band. To study common NH oscillations, we then applied Multichannel SSA. Temperature variations on time scales longer than 600 years appear in our analysis as a dominant trend component, which shows climate features consistent with the Medieval Warm Period and the Little Ice Age. Statistically significant NH-wide peaks appear at 330, 250 and 110 years, as well as in a broad 50–80-year band. Strong variability centers in several bands are located around the North Atlantic basin and are in phase opposition between Greenland and Western Europe. Article in Journal/Newspaper Greenland North Atlantic Università degli studi di Torino: AperTo (Archivio Istituzionale ad Accesso Aperto) Climate Dynamics 45 1-2 83 104 |
institution |
Open Polar |
collection |
Università degli studi di Torino: AperTo (Archivio Istituzionale ad Accesso Aperto) |
op_collection_id |
ftunivtorino |
language |
English |
topic |
paleoclimate temperature proxy records |
spellingShingle |
paleoclimate temperature proxy records TARICCO, Carla MANCUSO, SALVATORE ALESSIO, Silvia Maria F. C. Ljungqvist M. Ghil Multispectral analysis of Northern Hemisphere temperature record over the last five millennia |
topic_facet |
paleoclimate temperature proxy records |
description |
Aiming to describe spatio-temporal climate variability on decadal-to-centennial time scales and longer, we analyzed a data set of 26 proxy records extending back 1,000–5,000 years; all records chosen were calibrated to yield temperatures. The seven irregularly sampled series in the data set were interpolated to a regular grid by optimized methods and then two advanced spectral methods—namely singular-spectrum analysis (SSA) and the continuous wavelet transform—were applied to individual series to separate significant oscillations from the high noise background. This univariate analysis identified several common periods across many of the 26 proxy records: a millennial trend, as well as oscillations of about 100 and 200 years, and a broad peak in the 40–70-year band. To study common NH oscillations, we then applied Multichannel SSA. Temperature variations on time scales longer than 600 years appear in our analysis as a dominant trend component, which shows climate features consistent with the Medieval Warm Period and the Little Ice Age. Statistically significant NH-wide peaks appear at 330, 250 and 110 years, as well as in a broad 50–80-year band. Strong variability centers in several bands are located around the North Atlantic basin and are in phase opposition between Greenland and Western Europe. |
author2 |
C. Taricco S. Mancuso F.C. Ljungqvist S. Alessio M. Ghil |
format |
Article in Journal/Newspaper |
author |
TARICCO, Carla MANCUSO, SALVATORE ALESSIO, Silvia Maria F. C. Ljungqvist M. Ghil |
author_facet |
TARICCO, Carla MANCUSO, SALVATORE ALESSIO, Silvia Maria F. C. Ljungqvist M. Ghil |
author_sort |
TARICCO, Carla |
title |
Multispectral analysis of Northern Hemisphere temperature record over the last five millennia |
title_short |
Multispectral analysis of Northern Hemisphere temperature record over the last five millennia |
title_full |
Multispectral analysis of Northern Hemisphere temperature record over the last five millennia |
title_fullStr |
Multispectral analysis of Northern Hemisphere temperature record over the last five millennia |
title_full_unstemmed |
Multispectral analysis of Northern Hemisphere temperature record over the last five millennia |
title_sort |
multispectral analysis of northern hemisphere temperature record over the last five millennia |
publishDate |
2014 |
url |
http://hdl.handle.net/2318/157488 https://doi.org/10.1007/s00382-014-2331-1 |
genre |
Greenland North Atlantic |
genre_facet |
Greenland North Atlantic |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000354712500005 firstpage:1 lastpage:22 numberofpages:22 journal:CLIMATE DYNAMICS http://hdl.handle.net/2318/157488 doi:10.1007/s00382-014-2331-1 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84929998602 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1007/s00382-014-2331-1 |
container_title |
Climate Dynamics |
container_volume |
45 |
container_issue |
1-2 |
container_start_page |
83 |
op_container_end_page |
104 |
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1781060876314345472 |