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Image: (Top) http// elnino.noaa (Bottom) Hathaway/NASA, 2011

Solar Cycle Variations I nfluencing Oceanic Niño Index Anomalies Across The Equatorial Pacific Ocean Christopher Johnson SP11. Image: (Top) http// elnino.noaa.gov (Bottom) Hathaway/NASA, 2011. Objective. Compare periods of increased solar luminosity to climate variations

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Image: (Top) http// elnino.noaa (Bottom) Hathaway/NASA, 2011

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  1. Solar Cycle Variations Influencing Oceanic Niño Index Anomalies Across The Equatorial Pacific OceanChristopher Johnson SP11 Image: (Top) http//elnino.noaa.gov(Bottom) Hathaway/NASA, 2011

  2. Objective • Compare periods of increased solar luminosity to climate variations • Increasing solar output should increase surface temperatures on Earth, notably, sea surface temperature

  3. Image: nasa.gov Solar Cycle • Differential rotation in plasma • Magnetosphere discontinuities • Sunspots occur on photosphere • Observed 11 year cycle • Luminosity increases during sunspot maximum

  4. Oceanic Niño Index • 3 month SST average • 5oN-5oS, 120o-170oW • Predicted 3-7 year cycle • (+) El Niño • (-) La Niña

  5. Trend & Correlation • Positive slope, low correlation, high random error. • Not indicating a linear trend

  6. Chi Square 290 • Chi Critical 36 • Not Normally Distributed

  7. Power Spectral Density - Periodogram Periodicity in Sunspot 10.17 years Periodicity in ONI 5.08 years

  8. Cross Power Spectral Density

  9. Conclusion • Low Correlation Coefficient • Sunspot trend 10.18 years (between 1950-2010) • ONI periodicity 5.08 years (between 1950-2010) • Lag Time between periodicity is 1.45 years • At this time no direct correlation was determined between the solar sunspot cycle and Oceanic Niño Index in the southern Pacific

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