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Teleconnections Nigam, 2003

Teleconnections Nigam, 2003. Speaker ： Pei-Yu Chueh Adviser ： Yu- Heng Tseng Date ： 2011/3/15. Teleconnection Map. WP. PNA. NAO(SLP). Atlantic Sector teleconnection. PNA. 500hPa geopotential height. SLP. 500hPa geopotential height. SLP. decadal. Correlations of NAO with

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Teleconnections Nigam, 2003

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  1. TeleconnectionsNigam, 2003 Speaker：Pei-Yu Chueh Adviser：Yu-Heng Tseng Date：2011/3/15

  2. Teleconnection Map WP PNA NAO(SLP)

  3. Atlantic Sector teleconnection PNA 500hPa geopotential height SLP 500hPa geopotential height SLP decadal

  4. Correlations of NAO with • land station precipitation NAO 850hPa temp SLP WE NA Storm track • Regression of NAO with • diabatic heating

  5. Land station • precipitation The WP pattern represents both intraseasonal and lower-frequency variability over the North Pacific. WP SLP(NPO) 200hPa geopotential height ENSO westward tilt NAO NW P PNA NW P WP/NPO

  6. Comparison of WP/NPO and NAO troposphericjet structure NAO different feature • jet is shifted poleward • polar vortex is strengthened in the Pacific lower stratosphere SLP SLP • weak zonal wind anomaly in the tropics • stronger extensions into the stratosphere

  7. Weekly evolution of PNA variability

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