• Overview • Recent highlights – Pacific/Arctic Ocean – Indian Ocean – Atlantic Ocean • CFS SST Predictions
– The equatorial Pacific Ocean warmed up significantly due to downwelling Kelvin wave forced by MJO-related westerly wind anomalies. – Transition from La Nina to ENSO-neutral conditions occurred in April 2009. – Negative PDO phase since September 2007 has persisted for 20 months now. – Above-normal...
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| Format: | Text |
| Language: | English |
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2009
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.640.8356 http://www.cpc.ncep.noaa.gov/products/GODAS/ocean_briefing_gif/global_ocean_monitoring_2009_05.pdf |
| Summary: | – The equatorial Pacific Ocean warmed up significantly due to downwelling Kelvin wave forced by MJO-related westerly wind anomalies. – Transition from La Nina to ENSO-neutral conditions occurred in April 2009. – Negative PDO phase since September 2007 has persisted for 20 months now. – Above-normal upwelling has persisted since mid-November 2007 along the west coast of North America north of 35N. • Indian Ocean – IOD index was near-normal. – Positive SST anomalies in the southwest Indian Ocean persisted. • Atlantic Ocean – Below-normal SST in the southeast tropical Atlantic persisted, while above-normal SST in the tropical South Atlantic and equatorial Atlantic strengthened. – ITCZ was shifted southward in responding to the negative meridional gradient of SSTA. Overview • Arctic Ocean – Sea ice extent was close to normal due to a slower retreat of sea ice than that of the average seasonal cycle. |
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