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\bibitem{Smith_etal1998} Smith, S. R., Green, P. M., Leonardi, A. P., \& O{\textquoteright}Brien, J. J. (1998). The role of lower and upper tropospheric circulations in forcing ENSO winter precipitation anomalies. In \textit{9th Symposium on Global Change Studies, American Meteorological Society, Phoenix, AZ, USA} (pp. 176--179).

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