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Reading: Discovery of Teleconnections Using Data Mining Technologies in Global Climate Datasets

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Research Papers

Discovery of Teleconnections Using Data Mining Technologies in Global Climate Datasets

Authors:

Fan Lin ,

Department of Intelligent Science, Peking University, Beijing 100871, China
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XingXing Jin,

Department of Intelligent Science, Peking University, Beijing 100871, China
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Cheng Hu,

Department of Intelligent Science, Peking University, Beijing 100871, China
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XiaoPing Gao,

Department of Intelligent Science, Peking University, Beijing 100871, China
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Kunqing Xie,

Department of Intelligent Science, Peking University, Beijing 100871, China
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XiaoFeng Lei

Department of Intelligent Science, Peking University, Beijing 100871, China
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Abstract

In this paper, we apply data mining technologies to a 100-year global land precipitation dataset and a 100-year Sea Surface Temperature (SST) dataset. Some interesting teleconnections are discovered, including well-known patterns and unknown patterns (to the best of our knowledge), such as teleconnections between the abnormally low temperature events of the North Atlantic and floods in Northern Bolivia, abnormally low temperatures of the Venezuelan Coast and floods in Northern Algeria and Tunisia, etc. In particular, we use a high dimensional clustering method and a method that mines episode association rules in event sequences. The former is used to cluster the original time series datasets into higher spatial granularity, and the later is used to discover teleconnection patterns among events sequences that are generated by the clustering method. In order to verify our method, we also do experiments on the SOI index and a 100-year global land precipitation dataset and find many well-known teleconnections, such as teleconnections between SOI lower events and drought events of Eastern Australia, South Africa, and North Brazil; SOI lower events and flood events of the middle-lower reaches of Yangtze River; etc. We also do explorative experiments to help domain scientists discover new knowledge.

DOI: http://doi.org/10.2481/dsj.6.S749
How to Cite: Lin, F. et al., (2007). Discovery of Teleconnections Using Data Mining Technologies in Global Climate Datasets. Data Science Journal. 6, pp.S749–S755. DOI: http://doi.org/10.2481/dsj.6.S749
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Published on 26 Oct 2007.
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