Millennial-scale sea surface temperature variability in the western tropical North Atlantic from planktonic foraminiferal census counts
Planktonic foraminiferal census counts are used to construct high-resolution sea surface temperature (SST) and subsurface (thermocline) temperature records at a core site in the Tobago Basin, Lesser Antilles. The record is used to document climatic variability at this tropical site in comparison to...
| Authors: | ; |
|---|---|
| Format: | Article |
| Publication date: | 2000 |
| Country: | España |
| Institution: | Universitat Autònoma de Barcelona |
| Repository: | Dipòsit Digital de Documents de la UAB |
| Language: | English |
| OAI Identifier: | oai:ddd.uab.cat:25440 |
| Online Access: | https://ddd.uab.cat/record/25440 https://dx.doi.org/urn:doi:10.1029/1999PA000462 |
| Access Level: | Open access |
| Keyword: | Oceans Micropaleontology Paleoclimatology |
| _version_ | 1878736891599126528 |
|---|---|
| author | Hüls, Matthias |
| author2 | Zahn, Rainer |
| author2_role | author |
| author_browse | Hüls, Matthias Zahn, Rainer |
| author_facet | Hüls, Matthias Zahn, Rainer |
| author_role | author |
| collection | Dipòsit Digital de Documents de la UAB |
| description | Planktonic foraminiferal census counts are used to construct high-resolution sea surface temperature (SST) and subsurface (thermocline) temperature records at a core site in the Tobago Basin, Lesser Antilles. The record is used to document climatic variability at this tropical site in comparison to middle- and high-latitude sites and to test current concepts of cross-equatorial heat transports as a major player in interhemispheric climate variability. Temperatures are estimated using transfer function and modern analog techniques. Glacial-maximum cooling of 2.5°'3°C is indicated; maximum cooling by 4°C is inferred for isotope stage 3. The SST record displays millennial-scale variability with temperature jumps of up to 3°C and closely tracks the structure of ice-core Dansgaard/Oeschger cycles. SST variations in part of the record run opposite to the SST evolution at high northern latitude sites, pointing to thermohaline circulation and marine heat transport as an important factor driving SST in the tropical and high-latitude Atlantic, both on orbital and suborbital timescales. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_97193bb4436dcccaabe98a10fa4ff8de |
| institution | Universitat Autònoma de Barcelona |
| instname_str | Universitat Autònoma de Barcelona |
| language | eng |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:ddd.uab.cat:25440 |
| publishDate | 2000 |
| publishDateSort | 2000 |
| reponame_str | Dipòsit Digital de Documents de la UAB |
| spelling | Millennial-scale sea surface temperature variability in the western tropical North Atlantic from planktonic foraminiferal census counts Hüls, Matthias Zahn, Rainer Oceans Micropaleontology Paleoclimatology Planktonic foraminiferal census counts are used to construct high-resolution sea surface temperature (SST) and subsurface (thermocline) temperature records at a core site in the Tobago Basin, Lesser Antilles. The record is used to document climatic variability at this tropical site in comparison to middle- and high-latitude sites and to test current concepts of cross-equatorial heat transports as a major player in interhemispheric climate variability. Temperatures are estimated using transfer function and modern analog techniques. Glacial-maximum cooling of 2.5°'3°C is indicated; maximum cooling by 4°C is inferred for isotope stage 3. The SST record displays millennial-scale variability with temperature jumps of up to 3°C and closely tracks the structure of ice-core Dansgaard/Oeschger cycles. SST variations in part of the record run opposite to the SST evolution at high northern latitude sites, pointing to thermohaline circulation and marine heat transport as an important factor driving SST in the tropical and high-latitude Atlantic, both on orbital and suborbital timescales. https://ddd.uab.cat/record/25440 https://dx.doi.org/urn:doi:10.1029/1999PA000462 |
| spellingShingle | Millennial-scale sea surface temperature variability in the western tropical North Atlantic from planktonic foraminiferal census counts Hüls, Matthias Oceans Micropaleontology Paleoclimatology |
| title | Millennial-scale sea surface temperature variability in the western tropical North Atlantic from planktonic foraminiferal census counts |
| title_full | Millennial-scale sea surface temperature variability in the western tropical North Atlantic from planktonic foraminiferal census counts |
| title_fullStr | Millennial-scale sea surface temperature variability in the western tropical North Atlantic from planktonic foraminiferal census counts |
| title_full_unstemmed | Millennial-scale sea surface temperature variability in the western tropical North Atlantic from planktonic foraminiferal census counts |
| title_short | Millennial-scale sea surface temperature variability in the western tropical North Atlantic from planktonic foraminiferal census counts |
| title_sort | Millennial-scale sea surface temperature variability in the western tropical North Atlantic from planktonic foraminiferal census counts |
| topic | Oceans Micropaleontology Paleoclimatology |
| topic_facet | Oceans Micropaleontology Paleoclimatology |
| url | https://ddd.uab.cat/record/25440 https://dx.doi.org/urn:doi:10.1029/1999PA000462 |