Diatom percentage abundances and sea surface temperature reconstruction for core AI07-06G, from Trinity Bay, Newfoundland

• Main Authors: Orme, Lisa C, Miettinen, Arto, Seidenkrantz, Marit-Solveig, Tuominen, Kirsi, Pearce, Christof, Divine, Dmitry V, Oksman, Mimmi, Kuijpers, Antoon
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Actinocyclus curvatulus; AGE; AI07; AI07-06G; Akademik Ioffe; Asteromphalus robustus; Bacterosira fragilis; Coscinodiscus asteromphalus; Coscinodiscus lineatus; Coscinodiscus marginatus; Coscinodiscus oculus-iridis; Coscinodiscus radiatus; Counting; diatoms; DEPTH; sediment/rock; Fragilariopsis cylindrus; Fragilariopsis oceanica; GC; Gravity corer; Holocene; Newfoundland; Nitzschia angularis; Nitzschia atlantica; Nitzschia bicapitata; Nitzschia kolaczeckii; Nitzschia marina; Porosira glacialis; Proboscia alata; Pseudoeunotia doliolus; Rhizosolenia borealis; Rhizosolenia hebetata forma hebetata; Rhizosolenia hebetata forma semispina; Roperia tesselata; Sea surface temperature; August; SST reconstruction; transfer function-based approach; Synedra sp.; Thalassionema nitzschioides; Thalassiosira angulata; Thalassiosira anguste-lineata; Thalassiosira eccentrica; Thalassiosira ferelineata; Thalassiosira gravida spore; Thalassiosira gravida vegetative; Thalassiosira hyalina; Thalassiosira lineata; Labrador Sea
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.930940; https://doi.org/10.1594/PANGAEA.930940

Due to the shortness of available records, the longterm patterns of climate variability in the Labrador Sea and Newfoundland region are not clear. Here, a diatom-based reconstruction of summer sea-surface temperature (SST) developed from Trinity Bay, Newfoundland, provides insight into variations of SST since 7.2 cal ka BP in the southwestern Labrador Sea. The results show that the Holocene Thermal Maximum (HTM) lasted until c. 5.2 cal ka BP, which was followed by a gradual cooling trend overprinted by centennial temperature fluctuations of 1-2°C.