Advances in Geosciences Volume 24: Ocean Sciences (OS) (144 Pages)
نویسندگان
چکیده
Because of the huge warm water pool that straddles across the tropical western Pacific and eastern Indian Oceans, the climate variations in these two oceans are closely related and need to be studied as a whole. Observations reveal a striking out-of-phase relationship between the zonal sea surface height (SSH) gradients in these two oceans and, to a lesser extent, between the corresponding sea surface temperature (SST) gradients. This can be explained in simple terms as follows. The Walker circulation ascends above the warm pool, with easterly surface winds on the Pacific side and westerly on the Indian side, which piles waters up in the warm pool and lowers SSH and SST in the eastern Pacific and western Indian Oceans. This produces a tripole structure with opposite zonal gradients of SSH and SST in the two oceans. When the doublecell Walker circulation weakens or strengthens, these gradients decrease or increase together, and positive feedbacks between the gradients and the Walker circulation take place. This tripole mode of variability is robust and can be excited on various timescales from either the Pacific or Indian basin. It consists of both local ocean–atmosphere coupling and inter-basin interaction, thus providing a unified framework for the tropical Indo-Pacific climate variability.
منابع مشابه
Geological Sciences
Teach the Earth: The Science Education Resource Center (SERC) Portal for Geoscience Faculty (Carleton College). This portal is the gateway to thousands of pages of activities, workshops, course descriptions and more http://serc.carleton.edu/teachearth/index.html [1] See the SERC site Bringing Research on Learning to the Geosciences for a searchable database of articles on effective learning and...
متن کاملThe Arctic Ocean marine carbon cycle
The Arctic Ocean marine carbon cycle: evaluation of air-sea CO2 exchanges, ocean acidification impacts and potential feedbacks N. R. Bates and J. T. Mathis Bermuda Institute of Ocean Sciences, Ferry Reach, Bermuda School of Fisheries and Ocean Sciences, University of Alaska, Fairbanks, Alaska, USA Received: 18 June 2009 – Accepted: 21 June 2009 – Published: 9 July 2009 Correspondence to: N. R. ...
متن کاملGeological Sciences
Teach the Earth: The Science Education Resource Center (SERC) Portal for Geoscience Faculty (Carleton College). This portal is the gateway to thousands of pages of activities, workshops, course descriptions and more http://serc.carleton.edu/teachearth/index.html [1] See the SERC site Bringing Research on Learning to the Geosciences for a searchable database of articles on effective learning and...
متن کاملGeological Sciences
Teach the Earth: The Science Education Resource Center (SERC) Portal for Geoscience Faculty (Carleton College). This portal is the gateway to thousands of pages of activities, workshops, course descriptions and more http://serc.carleton.edu/teachearth/index.html [1] See the SERC site Bringing Research on Learning to the Geosciences for a searchable database of articles on effective learning and...
متن کامل