1 / 9

Influence of Solar Cycle Variations on Oceanic Niño Index Anomalies in the Equatorial Pacific

This study examines the relationship between solar cycle variations, specifically increasing solar luminosity, and climate anomalies as represented by the Oceanic Niño Index (ONI) across the Equatorial Pacific Ocean. Through analysis of sunspot cycles and their periodicity, the research explores the correlation between solar output and surface temperatures on Earth. Despite the investigation, results indicate a low correlation coefficient between sunspot trends and ONI, suggesting that other factors may significantly influence climate variations in the Southern Pacific.

devi
Télécharger la présentation

Influence of Solar Cycle Variations on Oceanic Niño Index Anomalies in the Equatorial Pacific

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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

More Related