Multi-sensor global compilation of mid-Holocene sea surface temperatures, based on Mg/Ca and alkenone palaeothermometry and reconstructions obtained using planktonic foraminifera and organic-walled dinoflagellate cyst


Autoria(s): Hessler, Ines; Harrison, Sandy P; Kucera, Michal; Waelbroeck, Claire; Chen, Min-Te; Anderson, Carin; de Vernal, Anne; Fréchette, Bianca; Cloke-Hayes, Angela; Leduc, Guillaume; Londeix, Laurent
Cobertura

MEDIAN LATITUDE: 13.194941 * MEDIAN LONGITUDE: 150.433035 * SOUTH-BOUND LATITUDE: -50.000000 * WEST-BOUND LONGITUDE: 3.773333 * NORTH-BOUND LATITUDE: 77.270000 * EAST-BOUND LONGITUDE: -36.636667 * DATE/TIME START: 1963-04-05T00:00:00 * DATE/TIME END: 2008-06-20T04:07:00

Data(s)

21/03/2014

Resumo

We present and examine a multi-sensor global compilation of mid-Holocene (MH) sea surface temperatures (SST), based on Mg/Ca and alkenone palaeothermometry and reconstructions obtained using planktonic foraminifera and organic-walled dinoflagellate cyst census counts. We assess the uncertainties originating from using different methodologies and evaluate the potential of MH SST reconstructions as a benchmark for climate-model simulations. The comparison between different analytical approaches (time frame, baseline climate) shows the choice of time window for the MH has a negligible effect on the reconstructed SST pattern, but the choice of baseline climate affects both the magnitude and spatial pattern of the reconstructed SSTs. Comparison of the SST reconstructions made using different sensors shows significant discrepancies at a regional scale, with uncertainties often exceeding the reconstructed SST anomaly. Apparent patterns in SST may largely be a reflection of the use of different sensors in different regions. Overall, the uncertainties associated with the SST reconstructions are generally larger than the MH anomalies. Thus, the SST data currently available cannot serve as a target for benchmarking model simulations.

Formato

application/zip, 2 datasets

Identificador

https://doi.pangaea.de/10.1594/PANGAEA.830815

doi:10.1594/PANGAEA.830815

Idioma(s)

en

Publicador

PANGAEA

Direitos

CC-BY: Creative Commons Attribution 3.0 Unported

Access constraints: unrestricted

Fonte

Supplement to: Hessler, Ines; Harrison, S P; Kucera, Michal; Waelbroeck, Claire; Chen, Min-Te; Anderson, Carin; de Vernal, Anne; Fréchette, Bianca; Cloke-Hayes, Angela; Leduc, Guillaume; Londeix, Laurent (2014): Implication of methodological uncertainties for mid-Holocene sea surface temperature reconstructions. Climate of the Past, 10(6), 2237-2252, doi:10.5194/cp-10-2237-2014

Palavras-Chave #Age; AGE; Age, 14C AMS; Age, calibrated; Age, comment; Age, dated; Age, dated standard deviation; Age, maximum/old; Age, minimum/young; Age dated; Age max; Age min; Age std dev; Calibration used; cal ka BP; Center for Marine Environmental Sciences; Comm; Comment; Core ID; Depth; DEPTH, sediment/rock; Event; Label; MARUM; Material; Reference; Reference/source; reservoir ages; Sample code/label; Sea surface temperature, annual mean; Sea surface temperature, summer; Sea surface temperature, winter; sensor; SST (1-12); SST sum; SST win; Study
Tipo

Dataset