Solar forcing of Caribbean drought events during the last millennium
ABSTRACT Anthropogenic climate change is expected to increase the frequency of drought events in the earth's subtropical regions. However, the climate dynamics of these regions are not fully understood and debate surrounds how external forcing factors such as solar and volcanic forcing influenc...
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crwiley:10.1002/jqs.2660 2024-09-30T14:39:24+00:00 Solar forcing of Caribbean drought events during the last millennium BURN, MICHAEL J. PALMER, SUZANNE E. 2013 http://dx.doi.org/10.1002/jqs.2660 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.2660 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.2660 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 29, issue 8, page 827-836 ISSN 0267-8179 1099-1417 journal-article 2013 crwiley https://doi.org/10.1002/jqs.2660 2024-09-17T04:45:57Z ABSTRACT Anthropogenic climate change is expected to increase the frequency of drought events in the earth's subtropical regions. However, the climate dynamics of these regions are not fully understood and debate surrounds how external forcing factors such as solar and volcanic forcing influence long‐term rainfall patterns in the subtropics. Here, we present the first high‐resolution reconstruction of Caribbean drought events over the last millennium based on analyses of sediment geochemical data from a continuous high‐resolution coastal lake‐sediment record in Jamaica. The record suggests extended episodes of drought occurred during the so‐called Little Ice Age (1400–1850 CE), which were associated with El‐Niño‐like conditions in the eastern equatorial Pacific Ocean and controlled by low natural radiative forcing. Comparison of the Jamaican drought record with previously published palaeoclimatic archives from within the circum‐Caribbean region suggests that dry conditions were associated with the southward migration of the Hadley Cell, a stronger North Atlantic High and the concomitant intensification of the north‐east trade winds and the Caribbean Low Level Jet. We conclude that pre‐industrial climatic change in the region was probably controlled by solar forcing and modulated by the combined influence of El Niño Southern Oscillation and the North Atlantic Oscillation. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Wiley Online Library Pacific Journal of Quaternary Science 29 8 827 836 |
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Wiley Online Library |
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English |
description |
ABSTRACT Anthropogenic climate change is expected to increase the frequency of drought events in the earth's subtropical regions. However, the climate dynamics of these regions are not fully understood and debate surrounds how external forcing factors such as solar and volcanic forcing influence long‐term rainfall patterns in the subtropics. Here, we present the first high‐resolution reconstruction of Caribbean drought events over the last millennium based on analyses of sediment geochemical data from a continuous high‐resolution coastal lake‐sediment record in Jamaica. The record suggests extended episodes of drought occurred during the so‐called Little Ice Age (1400–1850 CE), which were associated with El‐Niño‐like conditions in the eastern equatorial Pacific Ocean and controlled by low natural radiative forcing. Comparison of the Jamaican drought record with previously published palaeoclimatic archives from within the circum‐Caribbean region suggests that dry conditions were associated with the southward migration of the Hadley Cell, a stronger North Atlantic High and the concomitant intensification of the north‐east trade winds and the Caribbean Low Level Jet. We conclude that pre‐industrial climatic change in the region was probably controlled by solar forcing and modulated by the combined influence of El Niño Southern Oscillation and the North Atlantic Oscillation. |
format |
Article in Journal/Newspaper |
author |
BURN, MICHAEL J. PALMER, SUZANNE E. |
spellingShingle |
BURN, MICHAEL J. PALMER, SUZANNE E. Solar forcing of Caribbean drought events during the last millennium |
author_facet |
BURN, MICHAEL J. PALMER, SUZANNE E. |
author_sort |
BURN, MICHAEL J. |
title |
Solar forcing of Caribbean drought events during the last millennium |
title_short |
Solar forcing of Caribbean drought events during the last millennium |
title_full |
Solar forcing of Caribbean drought events during the last millennium |
title_fullStr |
Solar forcing of Caribbean drought events during the last millennium |
title_full_unstemmed |
Solar forcing of Caribbean drought events during the last millennium |
title_sort |
solar forcing of caribbean drought events during the last millennium |
publisher |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1002/jqs.2660 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.2660 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.2660 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Journal of Quaternary Science volume 29, issue 8, page 827-836 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.2660 |
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Journal of Quaternary Science |
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29 |
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8 |
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827 |
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836 |
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1811641991892566016 |