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Ocean-Atmospheric Response to North Pacific Wind Stress Forcing: A Coupled Perspective

Ocean-Atmospheric Response to North Pacific Wind Stress Forcing: A Coupled Perspective. Lixin Wu Physical Oceanography Laboratory Ocean University of China Qingdao, China. Collaborators: Chun Li and Liping Zhang, Ocean University of China

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Ocean-Atmospheric Response to North Pacific Wind Stress Forcing: A Coupled Perspective

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  1. Ocean-AtmosphericResponse to North Pacific Wind Stress Forcing: A Coupled Perspective Lixin Wu Physical Oceanography Laboratory Ocean University of China Qingdao, China Collaborators: Chun Li and Liping Zhang, Ocean University of China Zhengyu Liu, University of Wisconsin-Madison

  2. Wind and SLP 77-88 and 71-76 Deser et al. (1996, J Climate)

  3. SST and Surface wind Curl>0 Westerly Curl<0 76/77 Easterly Curl<0 Curl>0

  4. SST and Heat Content

  5. KOE SST and NPI WSP SST and NPI SST Lead NPI Lead

  6. After shift Curl<0 Prior to shift Curl>0 Possible Mechanism for mid-70s Climate Shift 40oN 30oN Wu, Lee and Liu (2005, J. Climate)

  7. R Green-Function Approach

  8. FOAM OGCM Simulation Ocean Current upper 500m SST anomaly Mean Anomaly

  9. FOAM Coupled Heat flux SST Heat flux and surface wind

  10. FC: Current Anomalies upper 500m Ocean Current upper 500m Current Diff of FC&PCG PCG: Ocean Current Anomalies upper 500m 1cm/s

  11. 1m/s NDJ JFM MAM MJJ

  12. STC: Subtropical-tropical Cell PCG-STC anomaly FC-STC anomaly

  13. FC

  14. Z850 Z250 PC-TP JFM JAS

  15. Rossby Cooling WES Cooling STC Summary for coupled adjustment NP EQ WES-STC Relay Teleconnection Wu et al. (2007, Clim. Dyn.)

  16. Discussions: Understanding Coupled O/A interaction over the Midlatitudes 1. Modeling Methodology Roadmap: AGCM+SSTAGCM_ML+HF  CGCM+ IV CGCM +WindStress 2. Timescale Interaction: mean/ synoptic/ season/interannual/decadal 3. Spatial-scale Interaction: Frontal vs. Basin scale 4. Local/Remote interaction: Tropics, North Atlantic etc.

  17. North Atlantic-North Pacific: Resonance Li and Wu (2009, Climate Dynamics, in press)

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