A speleothem-based Mid-Holocene Precipitation Reconstruction for West-Central Florida
The mid-Holocene was the warmest segment of the current interglacial and possessed a weak latitudinal temperature gradient, which impacted climate teleconnections and thus precipitation variability. Our window into the mid-Holocene climate is a high-resolution (near annual) stalagmite stable isotope...
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Digital Commons @ University of South Florida
2017
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Online Access: | https://digitalcommons.usf.edu/geo_facpub/2086 https://doi.org/10.1177/0959683616678463 |
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ftusouthflorida:oai:digitalcommons.usf.edu:geo_facpub-3060 2023-07-30T04:05:13+02:00 A speleothem-based Mid-Holocene Precipitation Reconstruction for West-Central Florida Pollock, Anna L. van Beynen, Philip E. DeLong, Kristine L. Polyak, Victor J. Asmerom, Yemane 2017-07-01T07:00:00Z https://digitalcommons.usf.edu/geo_facpub/2086 https://doi.org/10.1177/0959683616678463 unknown Digital Commons @ University of South Florida https://digitalcommons.usf.edu/geo_facpub/2086 doi:10.1177/0959683616678463 https://doi.org/10.1177/0959683616678463 School of Geosciences Faculty and Staff Publications Florida mid-Holocene North America paleoclimate precipitation speleothem subtropics Earth Sciences article 2017 ftusouthflorida https://doi.org/10.1177/0959683616678463 2023-07-13T20:45:47Z The mid-Holocene was the warmest segment of the current interglacial and possessed a weak latitudinal temperature gradient, which impacted climate teleconnections and thus precipitation variability. Our window into the mid-Holocene climate is a high-resolution (near annual) stalagmite stable isotope-based paleoprecipitation record from Brown’s Cave in West-Central Florida. The oxygen isotopic (δ18O) time series is tied to a uranium-series (U-series) chronology that covers a 2000-year period from 6.6 to 4.6 ka. We compared our reconstruction with another speleothem δ18O-derived precipitation record near our study area that spans the last 1600 years. That comparison shows that the mid-Holocene was drier than the last 1.6 millennia. We posit the cause of this aridity was a westward expansion of the North Atlantic Subtropical High (NASH) coupled with changes in the planetary boundary layer in the Gulf of Mexico. Time-series analysis of our oxygen isotopic record found little evidence of any teleconnections originating from the North Atlantic including the North Atlantic Oscillation during the mid-Holocene. However, there is some indication of a weak, quasi-persistent oscillation within the temporal periodicity of the Atlantic Multidecadal Variability. Article in Journal/Newspaper North Atlantic North Atlantic oscillation University of South Florida St. Petersburg: Digital USFSP Nash ENVELOPE(-62.350,-62.350,-74.233,-74.233) The Holocene 27 7 987 996 |
institution |
Open Polar |
collection |
University of South Florida St. Petersburg: Digital USFSP |
op_collection_id |
ftusouthflorida |
language |
unknown |
topic |
Florida mid-Holocene North America paleoclimate precipitation speleothem subtropics Earth Sciences |
spellingShingle |
Florida mid-Holocene North America paleoclimate precipitation speleothem subtropics Earth Sciences Pollock, Anna L. van Beynen, Philip E. DeLong, Kristine L. Polyak, Victor J. Asmerom, Yemane A speleothem-based Mid-Holocene Precipitation Reconstruction for West-Central Florida |
topic_facet |
Florida mid-Holocene North America paleoclimate precipitation speleothem subtropics Earth Sciences |
description |
The mid-Holocene was the warmest segment of the current interglacial and possessed a weak latitudinal temperature gradient, which impacted climate teleconnections and thus precipitation variability. Our window into the mid-Holocene climate is a high-resolution (near annual) stalagmite stable isotope-based paleoprecipitation record from Brown’s Cave in West-Central Florida. The oxygen isotopic (δ18O) time series is tied to a uranium-series (U-series) chronology that covers a 2000-year period from 6.6 to 4.6 ka. We compared our reconstruction with another speleothem δ18O-derived precipitation record near our study area that spans the last 1600 years. That comparison shows that the mid-Holocene was drier than the last 1.6 millennia. We posit the cause of this aridity was a westward expansion of the North Atlantic Subtropical High (NASH) coupled with changes in the planetary boundary layer in the Gulf of Mexico. Time-series analysis of our oxygen isotopic record found little evidence of any teleconnections originating from the North Atlantic including the North Atlantic Oscillation during the mid-Holocene. However, there is some indication of a weak, quasi-persistent oscillation within the temporal periodicity of the Atlantic Multidecadal Variability. |
format |
Article in Journal/Newspaper |
author |
Pollock, Anna L. van Beynen, Philip E. DeLong, Kristine L. Polyak, Victor J. Asmerom, Yemane |
author_facet |
Pollock, Anna L. van Beynen, Philip E. DeLong, Kristine L. Polyak, Victor J. Asmerom, Yemane |
author_sort |
Pollock, Anna L. |
title |
A speleothem-based Mid-Holocene Precipitation Reconstruction for West-Central Florida |
title_short |
A speleothem-based Mid-Holocene Precipitation Reconstruction for West-Central Florida |
title_full |
A speleothem-based Mid-Holocene Precipitation Reconstruction for West-Central Florida |
title_fullStr |
A speleothem-based Mid-Holocene Precipitation Reconstruction for West-Central Florida |
title_full_unstemmed |
A speleothem-based Mid-Holocene Precipitation Reconstruction for West-Central Florida |
title_sort |
speleothem-based mid-holocene precipitation reconstruction for west-central florida |
publisher |
Digital Commons @ University of South Florida |
publishDate |
2017 |
url |
https://digitalcommons.usf.edu/geo_facpub/2086 https://doi.org/10.1177/0959683616678463 |
long_lat |
ENVELOPE(-62.350,-62.350,-74.233,-74.233) |
geographic |
Nash |
geographic_facet |
Nash |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
School of Geosciences Faculty and Staff Publications |
op_relation |
https://digitalcommons.usf.edu/geo_facpub/2086 doi:10.1177/0959683616678463 https://doi.org/10.1177/0959683616678463 |
op_doi |
https://doi.org/10.1177/0959683616678463 |
container_title |
The Holocene |
container_volume |
27 |
container_issue |
7 |
container_start_page |
987 |
op_container_end_page |
996 |
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1772817003169447936 |