Title page for etd-0731114-152428


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URN etd-0731114-152428
Author Ting-tseng Wu
Author's Email Address No Public.
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Department Marine Environment and Engineering
Year 2014
Semester 1
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title The effects of El Niño-Southern Oscillation on temperature and precipitation in Taiwan
Date of Defense 2014-08-29
Page Count 150
Keyword
  • ENSO
  • anomalies
  • SST
  • time lag
  • cross-correlation analysis
  • Abstract The purpose of this study is to investigate the ENSO-driven effects on temperature and precipitation in Taiwan. The indices of ENSO used in the study include equatorial Pacific sea surface temperature (SST) anomalies, Southern Oscillation Index and Multivariate ENSO Index. The temperature and precipitation data are selected from long-term weather stations in plains, mountains and outlying islands of Taiwan. This study applies cross-correlation analysis to observe the ENSO effects on temperature, precipitation and time lag in Taiwan. In addition, ENSO events are divided into two types, Eastern Pacific (EP) ENSO and Central Pacific (CP) ENSO. Effects due to different types of ENSO on temperature, precipitation and time lag in Taiwan are examined. Finally, some stronger ENSO events in the late 20th century, including three El Niño events and three La Niña events, are chosen to observe the changes of temperature and precipitation in Taiwan between the current year and the following year.
    The results show a positive correlation between ENSO and the temperature in Taiwan. When El Niño occur, the temperature will be higher in Taiwan, where the effects of EP El Niño is obviously more influential than CP El Niño; when La Niña occur, the temperature will be lower in Taiwan, and the effects of CP La Niña is obviously more influential than EP La Niña. As for precipitation, the ENSO effects on precipitation in Taiwan are inconsistent and with low correlations. However, it shows that some ENSO events affect the spring rainfall in the following year.
    Advisory Committee
  • Yang-Yih Chen - chair
  • Chau-Ron Wu - co-chair
  • I-fan Tseng - co-chair
  • Yung-Fang Chiu - co-chair
  • Chung-Pan Lee - advisor
  • Files
  • etd-0731114-152428.pdf
  • Indicate in-campus at 1 year and off-campus access at 3 year.
    Date of Submission 2014-09-09

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