scholarly journals On the bipolar origin of Heinrich events

2014 ◽  
Vol 41 (24) ◽  
pp. 9080-9086
Author(s):  
Xiao Yang ◽  
J. A. Rial ◽  
Elizabeth P. Reischmann
Keyword(s):  
Heinrich Events

scholarly journals Enhanced iceberg discharge in the western North Atlantic during all Heinrich events of the last glaciation

2021 ◽  
Vol 564 ◽  
pp. 116910
Author(s):  
Yuxin Zhou ◽  
Jerry F. McManus ◽  
Allison W. Jacobel ◽  
Kassandra M. Costa ◽  
Shouyi Wang ◽  
...  
Keyword(s):  
North Atlantic ◽  
Heinrich Events ◽  
Last Glaciation

Weakened dust activity in southern Central Asia during Heinrich events

2021 ◽  
pp. 110805
Author(s):  
Jia Jia ◽  
Niuniu Wang ◽  
Zhiyuan Wang ◽  
Sisi Wang ◽  
Michael Meadows ◽  
...  
Keyword(s):  
Central Asia ◽  
Heinrich Events ◽  
Southern Central

scholarly journals Marine productivity response to Heinrich events: a model-data comparison

2012 ◽  
Vol 8 (5) ◽  
pp. 1581-1598 ◽  
Author(s):  
V. Mariotti ◽  
L. Bopp ◽  
A. Tagliabue ◽  
M. Kageyama ◽  
D. Swingedouw
Keyword(s):  
North Atlantic ◽  
General Circulation ◽  
Circulation Model ◽  
Global Ocean ◽  
Biogeochemical Model ◽  
Heinrich Events ◽  
The North ◽  
Heinrich Event ◽  
The North Atlantic ◽  
Marine Productivity

Abstract. Marine sediments records suggest large changes in marine productivity during glacial periods, with abrupt variations especially during the Heinrich events. Here, we study the response of marine biogeochemistry to such an event by using a biogeochemical model of the global ocean (PISCES) coupled to an ocean-atmosphere general circulation model (IPSL-CM4). We conduct a 400-yr-long transient simulation under glacial climate conditions with a freshwater forcing of 0.1 Sv applied to the North Atlantic to mimic a Heinrich event, alongside a glacial control simulation. To evaluate our numerical results, we have compiled the available marine productivity records covering Heinrich events. We find that simulated primary productivity and organic carbon export decrease globally (by 16% for both) during a Heinrich event, albeit with large regional variations. In our experiments, the North Atlantic displays a significant decrease, whereas the Southern Ocean shows an increase, in agreement with paleo-productivity reconstructions. In the Equatorial Pacific, the model simulates an increase in organic matter export production but decreased biogenic silica export. This antagonistic behaviour results from changes in relative uptake of carbon and silicic acid by diatoms. Reasonable agreement between model and data for the large-scale response to Heinrich events gives confidence in models used to predict future centennial changes in marine production. In addition, our model allows us to investigate the mechanisms behind the observed changes in the response to Heinrich events.

Abrupt (or millennial or suborbital) climatic variability: Heinrich events/stadials

2022 ◽  
pp. 181-187
Author(s):  
Samuel Toucanne ◽  
Filipa Naughton ◽  
Teresa Rodrigues ◽  
Natalia Vázquez-Riveiros ◽  
María Fernanda Sánchez Goñi
Keyword(s):  
Climatic Variability ◽  
Heinrich Events
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