Tropical pacific ocean is divided 5 different regions El Nino 1, 2,3,4 and Warm pool area. These area was studied respectively except warm pool area which has much noise. Fig 5 shows the sea surface height change among the Nino 1-4 region. As you can see, the SSH on Nino 1, 2, 3 region was increased but, Nino 4 region was decreased during he El Nino season.
Fig. 6 Time series evolution of (a) SST, (b) zonal wind, (c) SSH
Fig. 7. Scatter plot and regression line for (a) SST-Wind, (b) SST-SSH, (c) Wind-SSH
Fig 6. Shows the time series evolution of Sea surface temperature (SST) anomaly, zonal wind, and sea surface height (SSH) on the Nino 3 region. The SST and SSH was relatively increased but the zonal wind decreased during the El Nino season.
Fig. 7 shows the regression analysis results. The sea surface height is positively related to sea surface temperature and negatively related to zonal wind.
Conclusion
Potential of satellite data in assassin the El Nino event were studied and the relationship among the sea surface temperature, wind and sea surface height were investigated using visual interpretation and statistical methods.
During the El Nino season, the sea surface temperature of Eastern Pacific Ocean was increased and the sea surface height was increased significantly. The zonal wind over whole pacific ocean was disrupted, the trade wind direction was changed and the western pacific ocean wind speed was weakened.
The regression analysis shows that the sea surface height is positively related to sea surface temperature and negatively related to zonal wind.
Acknowledgements
The author would like to express thanks for the data providing and information for this research:
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European Space Agency (ESA)
- Centre ERS dArchivage et de Traitment (CERSAT)
- Physical Oceanography Distributed Active Archive Center (PO. DAAC)
- Jet Propulsion Laboratory (JPL)
- Research Systems Incorporation (RS Inc)
Reference
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The future of Spaceborne Altimetry Ocean and Climate Change; A report prepared by the Future Altimetry Working Group
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- McClam, E. P., W. G. Pichel, and C. C. Walton, 1985. Comparative Performance of AVHRR-Based Multichannel Sea Surface Temperatures, journal of Geophysical Research, 90. pp. 11587-11601.
- An Atlas of monthly Mean Distributions of SSMI Surface Wind Speed, AVHRR Sea Surface Temperature, AMI Surface Wind Velocity, and TOPEX/POSEIDON Sea Surface Height During 1995, JPL Publication 98-5.
