Title |
Pronounced centennial-scale Atlantic Ocean climate variability correlated with Western Hemisphere hydroclimate
|
---|---|
Published in |
Nature Communications, January 2018
|
DOI | 10.1038/s41467-018-02846-4 |
Pubmed ID | |
Authors |
Kaustubh Thirumalai, Terrence M. Quinn, Yuko Okumura, Julie N. Richey, Judson W. Partin, Richard Z. Poore, Eduardo Moreno-Chamarro |
Abstract |
Surface-ocean circulation in the northern Atlantic Ocean influences Northern Hemisphere climate. Century-scale circulation variability in the Atlantic Ocean, however, is poorly constrained due to insufficiently-resolved paleoceanographic records. Here we present a replicated reconstruction of sea-surface temperature and salinity from a site sensitive to North Atlantic circulation in the Gulf of Mexico which reveals pronounced centennial-scale variability over the late Holocene. We find significant correlations on these timescales between salinity changes in the Atlantic, a diagnostic parameter of circulation, and widespread precipitation anomalies using three approaches: multiproxy synthesis, observational datasets, and a transient simulation. Our results demonstrate links between centennial changes in northern Atlantic surface-circulation and hydroclimate changes in the adjacent continents over the late Holocene. Notably, our findings reveal that weakened surface-circulation in the Atlantic Ocean was concomitant with well-documented rainfall anomalies in the Western Hemisphere during the Little Ice Age. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 18 | 13% |
Spain | 13 | 10% |
Mexico | 12 | 9% |
Chile | 10 | 7% |
Argentina | 5 | 4% |
Dominican Republic | 3 | 2% |
Venezuela, Bolivarian Republic of | 3 | 2% |
Canada | 2 | 1% |
Guatemala | 1 | <1% |
Other | 11 | 8% |
Unknown | 56 | 42% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 115 | 86% |
Scientists | 18 | 13% |
Practitioners (doctors, other healthcare professionals) | 1 | <1% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 82 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Researcher | 16 | 20% |
Student > Ph. D. Student | 15 | 18% |
Student > Master | 12 | 15% |
Professor > Associate Professor | 5 | 6% |
Student > Doctoral Student | 5 | 6% |
Other | 8 | 10% |
Unknown | 21 | 26% |
Readers by discipline | Count | As % |
---|---|---|
Earth and Planetary Sciences | 38 | 46% |
Environmental Science | 9 | 11% |
Agricultural and Biological Sciences | 6 | 7% |
Social Sciences | 2 | 2% |
Biochemistry, Genetics and Molecular Biology | 1 | 1% |
Other | 2 | 2% |
Unknown | 24 | 29% |