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Madden-Julian Oscillation and sea level: Local and remote forcing
Citation
Oliver, ECJ and Thompson, KR, Madden-Julian Oscillation and sea level: Local and remote forcing, Journal of Geophysical Research-Space Physics, 115, (C1) Article C01003. ISSN 0148-0227 (2010) [Refereed Article]
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Copyright Statement
Copyright 2010 American Geophysical Union
Abstract
The Madden-Julian Oscillation (MJO) is the dominant mode of atmospheric
variability in the tropical atmosphere on intraseasonal time scales (i.e., weeks to seasons).
This study examines the connection between the MJO and global sea level measured by
altimeters over the last 17 years. We first identify regions exhibiting a significant (both
statistical and practical) relationship between sea level and the MJO. The first region
consists of the equatorial Pacific and western coastal zones of North and South America.
Consistent with previous studies, we identify wind-driven equatorially trapped Kelvin
waves that propagate eastward along the equatorial Pacific and then transform into coastal
trapped waves that propagate poleward along the western coasts of North and South
America. The second region includes the shallow waters of the Gulf of Carpentaria (off
Australia’s north coast) and the adjacent Arafura and Timor seas. Setup by onshore winds
is shown to be the dominant physical process. Finally, the northeastern Indian Ocean is
shown to be a complex region involving a combination of equatorially trapped Kelvin
waves, coastal trapped waves, and westward-propagating Rossby waves exhibiting
characteristics of both local and remote forcing. The implications of the results for deep
and coastal ocean forecasting are discussed.
Item Details
Item Type: | Refereed Article |
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Keywords: | madden-julian oscillation, sea level variability, global impacts |
Research Division: | Earth Sciences |
Research Group: | Oceanography |
Research Field: | Physical oceanography |
Objective Division: | Environmental Policy, Climate Change and Natural Hazards |
Objective Group: | Understanding climate change |
Objective Field: | Climate variability (excl. social impacts) |
UTAS Author: | Oliver, ECJ (Dr Eric Oliver) |
ID Code: | 84684 |
Year Published: | 2010 |
Web of Science® Times Cited: | 47 |
Deposited By: | IMAS Research and Education Centre |
Deposited On: | 2013-05-27 |
Last Modified: | 2013-07-09 |
Downloads: | 373 View Download Statistics |
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