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Symmetry of the Atlantic Nino mode (2017)

Lübbecke, Joke F. ; McPhaden, Michael J.

AGU (American Geophysical Union) | Wiley

In: Geophysical Research Letters, 44 (2). pp. 965-973.

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Publikationsdatum: 2020-02-06

Beschreibung: El Niño-Southern Oscillation (ENSO) in the Pacific is asymmetric for warm and cold events with respect to amplitude, spatial patterns and temporal evolution. Here the symmetry of the Atlantic Niño mode, which many previous studies have argued is governed by atmosphere–ocean dynamics similar to those of ENSO, is investigated using two different ocean reanalysis products. Calculation of Bjerknes feedback terms for the Pacific reveals a pronounced asymmetry between warm and cold events, though unlike most previous studies, the largest asymmetry is found in the relationship between eastern Pacific thermocline depth and SST anomalies. For the Atlantic, cold events are effectively mirror images of warm events with Bjerknes feedbacks of similar strength. The analysis supports not only the conclusion that Atlantic Niños are more symmetric than ENSO, but the hypothesis itself that the Bjerknes feedback is operative in the Atlantic given the strength of the relationship between the key variables involved.

Materialart: Article , PeerReviewed

Format: text

DOI: 10.1002/2016GL071829

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The 2nd International Indian Ocean Expedition (IIOE-2): Motivating New Exploration in a Poorly Understood Basin. (2017)

Hood, Raleigh ; Urban, Edward R. ; McPhaden, Michael J. ; [weitere]

Association for the Sciences of Limnology and Oceanography (ASLO)

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Publikationsdatum: 2021-05-19

Beschreibung: The Indian Ocean remains one of the most poorly sampled and overlooked regions of the world ocean. Today, more than 25% of the world’s population lives in the Indian Ocean region and the population of most Indian Ocean rim nations is increasing rapidly. These increases in population are giving rise to multiple stressors in both coastal and open ocean environments. Combined with warming and acidification due to global climate change, these regional stressors are resulting in loss of biodiversity in the Indian Ocean and also changes in the phenology and biogeography of many species. These pressures have given rise to an urgent need to understand and predict changes in the Indian Ocean, but the measurements that are needed to do this are still lacking. In response, SCOR, IOC, and IOGOOS have stimulated a second International Indian Ocean Expedition (IIOE-2). An international Science Plan and an Implementation Strategy for IIOE-2 have been developed, the formulation of national plans is well underway in several countries, and new research initiatives are being motivated

Beschreibung: Article pdf provided by authors via ResearchGate. Article published in Limnology and Oceanography Bulletin Volume 25 Number 4 pp.97–138, November 2016.

Beschreibung: Published

Schlagwort(e): IIOE-2 ; IIOE ; Historical account ; Indian Ocean Observing System (IndOOS) ; Early career scientists ; ASFA_2015::E::Expeditions (multiship)

Repository-Name: AquaDocs

Materialart: Conference Material , Refereed

Format: pp.117-124

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