Arctic and Antarctic Oscillation signatures in tropical coral proxies over the South China Sea
Arctic Oscillation (AO) and Antarctic Oscillation (AAO) are the leading modes of atmospheric circulation in mid-high latitudes. Previous studies have revealed that the climatic influences of the two modes are dominant in extra-tropical regions. This study finds that AO and AAO signals are also well...
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ftdoajarticles:oai:doaj.org/article:228762bb74074229b6db63fc322da6b1 2023-05-15T13:54:42+02:00 Arctic and Antarctic Oscillation signatures in tropical coral proxies over the South China Sea D.-Y. Gong S.-J. Kim C.-H. Ho 2009-05-01T00:00:00Z https://doi.org/10.5194/angeo-27-1979-2009 https://doaj.org/article/228762bb74074229b6db63fc322da6b1 EN eng Copernicus Publications https://www.ann-geophys.net/27/1979/2009/angeo-27-1979-2009.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-27-1979-2009 0992-7689 1432-0576 https://doaj.org/article/228762bb74074229b6db63fc322da6b1 Annales Geophysicae, Vol 27, Pp 1979-1988 (2009) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 2009 ftdoajarticles https://doi.org/10.5194/angeo-27-1979-2009 2022-12-31T15:02:18Z Arctic Oscillation (AO) and Antarctic Oscillation (AAO) are the leading modes of atmospheric circulation in mid-high latitudes. Previous studies have revealed that the climatic influences of the two modes are dominant in extra-tropical regions. This study finds that AO and AAO signals are also well recorded in coral proxies in the tropical South China Sea. There are significant interannual signals of AO and AAO in the strontium (Sr) content, which represents the sea surface temperature (SST). Among all the seasons, the most significant correlation occurs during winter in both hemispheres: the strongest AO-Sr and AAO-Sr coral correlations occur in January and August, respectively. This study also determined that the Sr content lags behind AO and AAO by 1–3 months. Large-scale anomalies in sea level pressure and horizontal wind at 850 hPa level support the strength of AO/AAO-coral teleconnections. In addition, a comparison with oxygen isotope records from two coral sites in neighboring oceans yields significant AO and AAO signatures with similar time lags. These results help to better understand monsoon climates and their teleconnection to high-latitude climate changes. Article in Journal/Newspaper Antarc* Antarctic Arctic Directory of Open Access Journals: DOAJ Articles Antarctic Arctic Annales Geophysicae 27 5 1979 1988 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 D.-Y. Gong S.-J. Kim C.-H. Ho Arctic and Antarctic Oscillation signatures in tropical coral proxies over the South China Sea |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
description |
Arctic Oscillation (AO) and Antarctic Oscillation (AAO) are the leading modes of atmospheric circulation in mid-high latitudes. Previous studies have revealed that the climatic influences of the two modes are dominant in extra-tropical regions. This study finds that AO and AAO signals are also well recorded in coral proxies in the tropical South China Sea. There are significant interannual signals of AO and AAO in the strontium (Sr) content, which represents the sea surface temperature (SST). Among all the seasons, the most significant correlation occurs during winter in both hemispheres: the strongest AO-Sr and AAO-Sr coral correlations occur in January and August, respectively. This study also determined that the Sr content lags behind AO and AAO by 1–3 months. Large-scale anomalies in sea level pressure and horizontal wind at 850 hPa level support the strength of AO/AAO-coral teleconnections. In addition, a comparison with oxygen isotope records from two coral sites in neighboring oceans yields significant AO and AAO signatures with similar time lags. These results help to better understand monsoon climates and their teleconnection to high-latitude climate changes. |
format |
Article in Journal/Newspaper |
author |
D.-Y. Gong S.-J. Kim C.-H. Ho |
author_facet |
D.-Y. Gong S.-J. Kim C.-H. Ho |
author_sort |
D.-Y. Gong |
title |
Arctic and Antarctic Oscillation signatures in tropical coral proxies over the South China Sea |
title_short |
Arctic and Antarctic Oscillation signatures in tropical coral proxies over the South China Sea |
title_full |
Arctic and Antarctic Oscillation signatures in tropical coral proxies over the South China Sea |
title_fullStr |
Arctic and Antarctic Oscillation signatures in tropical coral proxies over the South China Sea |
title_full_unstemmed |
Arctic and Antarctic Oscillation signatures in tropical coral proxies over the South China Sea |
title_sort |
arctic and antarctic oscillation signatures in tropical coral proxies over the south china sea |
publisher |
Copernicus Publications |
publishDate |
2009 |
url |
https://doi.org/10.5194/angeo-27-1979-2009 https://doaj.org/article/228762bb74074229b6db63fc322da6b1 |
geographic |
Antarctic Arctic |
geographic_facet |
Antarctic Arctic |
genre |
Antarc* Antarctic Arctic |
genre_facet |
Antarc* Antarctic Arctic |
op_source |
Annales Geophysicae, Vol 27, Pp 1979-1988 (2009) |
op_relation |
https://www.ann-geophys.net/27/1979/2009/angeo-27-1979-2009.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-27-1979-2009 0992-7689 1432-0576 https://doaj.org/article/228762bb74074229b6db63fc322da6b1 |
op_doi |
https://doi.org/10.5194/angeo-27-1979-2009 |
container_title |
Annales Geophysicae |
container_volume |
27 |
container_issue |
5 |
container_start_page |
1979 |
op_container_end_page |
1988 |
_version_ |
1766260772669751296 |