Dutheil C., Lal Shilpa, Lengaigne Matthieu, Cravatte Sophie, Menkès Christophe, Receveur A., Börgel F., Gröger M., Houlbrèque Fanny, Le Gendre R., Mangolte I., Peltier A., Meier H. E. M. (2024). The massive 2016 marine heatwave in the Southwest Pacific : an "El Nino-Madden-Julian Oscillation" compound event. Science Advances, 10 (41), p. eadp2948 [11 p.]. ISSN 2375-2548.
Titre du document
The massive 2016 marine heatwave in the Southwest Pacific : an "El Nino-Madden-Julian Oscillation" compound event
Année de publication
2024
Auteurs
Dutheil C., Lal Shilpa, Lengaigne Matthieu, Cravatte Sophie, Menkès Christophe, Receveur A., Börgel F., Gröger M., Houlbrèque Fanny, Le Gendre R., Mangolte I., Peltier A., Meier H. E. M.
Source
Science Advances, 2024,
10 (41), p. eadp2948 [11 p.] ISSN 2375-2548
El Nino typically induces cooling in the Southwest Pacific Ocean during austral summers, usually leading to decreased marine heatwave frequency and severity. However, the 2016 extreme El Nino unexpectedly coincided with the longest and most extensive marine heatwave ever recorded in the region. This heatwave, spanning over 1.7 million square kilometers, persisting for 24 days with a peak intensity of 1.5 degrees C, resulted in massive coral bleaching and fish mortality. This exceptional warming resulted from anomalously strong shortwave radiation and reduced heat loss via latent heat fluxes, owing to low wind speed and increased air humidity. These anomalies are attributed to a rare combined event "Madden-Julian Oscillation and extreme El Nino." Following 10 February, the rapid dissipation of this marine heatwave results from the most intense cyclone ever recorded in the South Pacific. The hazardous ecological impacts of this extreme event highlight the needs for improving our understanding of marine heatwave-driving mechanisms that may result in better seasonal predictions.
Plan de classement
Sciences du milieu [021]
;
Limnologie physique / Océanographie physique [032]
Description Géographique
PACIFIQUE
Localisation
Fonds IRD [F B010091967]
Identifiant IRD
fdi:010091967
