Multispectral analysis of Northern Hemisphere temperature records 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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2015
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Online Access: | https://escholarship.org/uc/item/8xf8963h https://escholarship.org/content/qt8xf8963h/qt8xf8963h.pdf https://doi.org/10.1007/s00382-014-2331-1 |
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ftcdlib:oai:escholarship.org:ark:/13030/qt8xf8963h 2024-09-15T18:09:56+00:00 Multispectral analysis of Northern Hemisphere temperature records over the last five millennia Taricco, C Mancuso, S Ljungqvist, FC Alessio, S Ghil, M 83 - 104 2015-07-26 application/pdf https://escholarship.org/uc/item/8xf8963h https://escholarship.org/content/qt8xf8963h/qt8xf8963h.pdf https://doi.org/10.1007/s00382-014-2331-1 unknown eScholarship, University of California qt8xf8963h https://escholarship.org/uc/item/8xf8963h https://escholarship.org/content/qt8xf8963h/qt8xf8963h.pdf doi:10.1007/s00382-014-2331-1 public Climate Dynamics, vol 45, iss 1-2 Meteorology & Atmospheric Sciences Atmospheric Sciences Oceanography Physical Geography and Environmental Geoscience article 2015 ftcdlib https://doi.org/10.1007/s00382-014-2331-1 2024-06-28T06:28:23Z 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 110years, 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 University of California: eScholarship Climate Dynamics 45 1-2 83 104 |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Meteorology & Atmospheric Sciences Atmospheric Sciences Oceanography Physical Geography and Environmental Geoscience |
spellingShingle |
Meteorology & Atmospheric Sciences Atmospheric Sciences Oceanography Physical Geography and Environmental Geoscience Taricco, C Mancuso, S Ljungqvist, FC Alessio, S Ghil, M Multispectral analysis of Northern Hemisphere temperature records over the last five millennia |
topic_facet |
Meteorology & Atmospheric Sciences Atmospheric Sciences Oceanography Physical Geography and Environmental Geoscience |
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 110years, 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. |
format |
Article in Journal/Newspaper |
author |
Taricco, C Mancuso, S Ljungqvist, FC Alessio, S Ghil, M |
author_facet |
Taricco, C Mancuso, S Ljungqvist, FC Alessio, S Ghil, M |
author_sort |
Taricco, C |
title |
Multispectral analysis of Northern Hemisphere temperature records over the last five millennia |
title_short |
Multispectral analysis of Northern Hemisphere temperature records over the last five millennia |
title_full |
Multispectral analysis of Northern Hemisphere temperature records over the last five millennia |
title_fullStr |
Multispectral analysis of Northern Hemisphere temperature records over the last five millennia |
title_full_unstemmed |
Multispectral analysis of Northern Hemisphere temperature records over the last five millennia |
title_sort |
multispectral analysis of northern hemisphere temperature records over the last five millennia |
publisher |
eScholarship, University of California |
publishDate |
2015 |
url |
https://escholarship.org/uc/item/8xf8963h https://escholarship.org/content/qt8xf8963h/qt8xf8963h.pdf https://doi.org/10.1007/s00382-014-2331-1 |
op_coverage |
83 - 104 |
genre |
Greenland North Atlantic |
genre_facet |
Greenland North Atlantic |
op_source |
Climate Dynamics, vol 45, iss 1-2 |
op_relation |
qt8xf8963h https://escholarship.org/uc/item/8xf8963h https://escholarship.org/content/qt8xf8963h/qt8xf8963h.pdf doi:10.1007/s00382-014-2331-1 |
op_rights |
public |
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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1810447547337015296 |