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Capt Adam J. Stepanek (Mar 06) Advisors: T. Murphree and C. Wash Sponsor: NOAA / AFCCC

We concluded that Madden-Julian Oscillation (MJO) phase, season of MJO occurrence and concurrent El Nino (EN)/La Nina (LN)/neutral regimes were responsible for altering MJO teleconnections over western North America.

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Capt Adam J. Stepanek (Mar 06) Advisors: T. Murphree and C. Wash Sponsor: NOAA / AFCCC

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  1. We concluded that Madden-Julian Oscillation (MJO) phase, season of MJO occurrence and concurrent El Nino (EN)/La Nina (LN)/neutral regimes were responsible for altering MJO teleconnections over western North America. • - 48 composites of MJO periods were constructed based on three critical factors: MJO phase, season, and concurrent EN/LN/neutral regimes. • Graphics illustrate Z200 and precipitation rate anomalies for conditions under which California - Desert Southwest (CA-DSW) region experienced most positive and most negative precipitation anomalies – similar analyses were performed from Alaska down to through CA-DSW. NORTH PACIFIC – NORTH AMERICAN CIRCULATION AND PRECIPITATION ANOMALIES ASSOCIATED WITH THE MADDEN-JULIAN OSCILLATION Capt Adam J. Stepanek(Mar 06)Advisors: T. Murphree and C. Wash Sponsor: NOAA / AFCCC Beneficiary: DoD and civilian extended-range planners; AFCCC Composite of 5 Wettest Periods in CA Composite of 5 Driest Periods in CA

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