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Attribution of Recent U.S. Warmth: Northward Shifted Midlatitude Westerlies

This study delves into the immediate causes behind recent climate conditions in the United States, focusing on the northward shift of midlatitude westerlies. The meeting on December 5, 2007, aimed to establish the attributable cause for the observed anomalies. Comparisons between 2007 and 2006 anomalies are made, with simulations and observations analyzed from organizations such as NASA, NSIPP, Scripps, and GOGA. Additionally, SST forcing on the 200 mb U winds and prediction tools, like CFS, highlight the impacts of La Niña within warming oceans and provide official winter climate forecasts for the U.S.

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Attribution of Recent U.S. Warmth: Northward Shifted Midlatitude Westerlies

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  1. Attribution of Recent US Warmth ° Northward Shifted Midlatitude Westerlies --- Immediate Cause for Recent US Climate Conditions? Second IAP Meeting December 5 2007

  2. Establishing Attributable Cause      L    

  3. sfcT ASO ‘07 pcpn ASO ‘07

  4. sfcT NOV ‘07 pcpn NOV ‘07

  5. 200mb Z SON 2007 sfcT

  6.  L 

  7.  L 

  8.    L  

  9.     L    

  10.     L    

  11. Observed ASO Anomalies: 2007 vs 2006

  12. Simulated (GOGA) PCPNASO Anomalies: 2007 vs 2006 OBS NASA: NSIPP Scripps: SFM

  13. Simulated (GOGA) 200mb ZASO Anomalies: 2007 vs 2006 OBS NASA: NSIPP Scripps: SFM

  14. SST Forcing of 200 mb U: Global vs EPAC Forcing

  15. SST Forcing of 200 mb U: Global vs EPAC Forcing

  16. What are the Prediction Tools for SSts Indicating? CFS

  17. 2007 La Niña Embedded Within Warming Oceans

  18. What are the Official Forecast for US winter climate? 0.5 month Lead 1.5 month Lead

  19. What are the Official Forecast for US winter climate? 1.5 month Lead 0.5 month Lead

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