Publications des scientifiques de l'IRD

Sicre M. A., Khodri Myriam, Mignot Juliette, Eiriksson J., Knudsen K. L., Ezat U., Closset I., Nogues P., Massé G. (2013). Sea surface temperature and sea ice variability in the subpolar North Atlantic from explosive volcanism of the late thirteenth century. Geophysical Research Letters, 40 (20), p. 5526-5530. ISSN 0094-8276.

Titre du document
Sea surface temperature and sea ice variability in the subpolar North Atlantic from explosive volcanism of the late thirteenth century
Année de publication
2013
Type de document
Article référencé dans le Web of Science WOS:000330514200035
Auteurs
Sicre M. A., Khodri Myriam, Mignot Juliette, Eiriksson J., Knudsen K. L., Ezat U., Closset I., Nogues P., Massé G.
Source
Geophysical Research Letters, 2013, 40 (20), p. 5526-5530 ISSN 0094-8276
In this study, we use IP25 and alkenone biomarker proxies to document the subdecadal variations of sea ice and sea surface temperature in the subpolar North Atlantic induced by the decadally paced explosive tropical volcanic eruptions of the second half of the thirteenth century. The short-and long-term evolutions of both variables were investigated by cross analysis with a simulation of the IPSL-CM5A LR model. Our results show short-term ocean cooling and sea ice expansion in response to each volcanic eruption. They also highlight that the long response time of the ocean leads to cumulative surface cooling and subsurface heat buildup due to sea ice capping. As volcanic forcing relaxes, the surface ocean rapidly warms, likely amplified by subsurface heat, and remains almost ice free for several decades.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020] ; Limnologie physique / Océanographie physique [032] ; Géophysique interne [066]
Localisation
Fonds IRD [F B010061764]
Identifiant IRD
fdi:010061764
Contact