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Biological Models NPZD & CPD Rubao Ji Collaborators : Davis, Chen, Beardsley, Townsend, Durbin, Runge, Flagg, Tian, Qiao, Petrik. Status. On-line coupling (off-line in future?) Initiated NPZD with climatology (NP) Completed 1995 whole year run for NPZD

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  1. Biological ModelsNPZD & CPDRubao JiCollaborators: Davis, Chen, Beardsley, Townsend, Durbin, Runge, Flagg, Tian, Qiao, Petrik

  2. Status • On-line coupling (off-line in future?) • Initiated NPZD with climatology (NP) • Completed 1995 whole year run for NPZD • Gathered copepod data (GLOBEC,MARMAP, ECOMON, AZMP) • Testing CPD model (Pseudocalanus), impletmented “stage with mean age” method, testing “EOF” method • Ready for NPZD run in other GLOBEC yrs

  3. Model structure

  4. Surface - Nitrogen

  5. Surface - Phytoplankton

  6. Transect - Nitrogen

  7. Transect - Phytoplankton

  8. Model-data comparison (1) Chl-a on the crest of GB (< 60m) in 1995. Data from E. Durbin

  9. Model-data comparison (2) Chl-a on NEP and SF in 1995. Data from E. Durbin

  10. Nitrogen cycle Redline from Pastsuzak et al., 1982

  11. CPD Initial Condition

  12. Day 30 E N C A

  13. Day 90

  14. NAO Slope Water NAO- Labrador Slope Water Intrusion Colder, Fresher Less Nutrient NAO+ Warm Slope Water Intrusion Warmer, More saline and Nutrient rich Drinkwater et al., 2003

  15. Climatological Condition (CC) Nitrogen Initial Condition Bottom Enriched Condition (BEC)

  16. CC VS BEC on GB CC BEC

  17. Flux comparison CC BEC

  18. CC VS BEC in JB CC BEC

  19. CC VS BEC in WB CC BEC

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