| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
Since Atlantic Nino in the tropical Atlantic is known to induce precipitation anomalies over South America and Africa, its impact may be mitigated by its successful prediction. However, its prediction remains to be a difficult task. Using a coupled ocean-atmosphere model (UTCM) that can realistically simulate the sea surface temperature (SST) over the tropical Atlantic, we have conducted ensemble prediction experiments. It is found that Atlantic Nino can be predicted two months ahead with an anomaly correlation coefficient of ATL3 index of 0.6 or higher. We have also investigated how the upper ocean temperature is initialized with an SST-nudging scheme and discussed possible reasons why the scheme has a lower skill over the tropical Atlantic than the tropical Pacific.
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